v7.0.0-beta.43

revert prev pr to temp fix osx (#7652 )
Add options.allowAwaitOutsideFunction. (#7637 )
2018-04-02 12:47:55 -04:00 · 2018-04-02 12:40:03 -04:00 · 2018-03-29 10:41:14 -04:00 · 2018-03-28 09:20:46 -05:00 · 2018-03-27 14:44:35 -04:00 · 2018-03-27 14:43:44 -04:00
896 changed files with 8392 additions and 7633 deletions
--- a/.babelrc.js
+++ b/.babelrc.js
@@ -1,48 +1,80 @@
 "use strict";

-const env = process.env.BABEL_ENV || process.env.NODE_ENV;
-const envOpts = {
-  loose: true,
+module.exports = function(api) {
+  const env = api.env();
+
+  const includeCoverage = process.env.BABEL_COVERAGE === "true";
+
+  const envOpts = {
+    loose: true,
+    modules: false,
+    exclude: ["transform-typeof-symbol"],
+  };
+
+  let convertESM = true;
+
+  switch (env) {
+    // Configs used during bundling builds.
+    case "babylon":
+    case "standalone":
+      convertESM = false;
+      break;
+    case "production":
+      // Config during builds before publish.
+      break;
+    case "development":
+      envOpts.debug = true;
+      envOpts.targets = {
+        node: "current",
+      };
+      break;
+    case "test":
+      envOpts.targets = {
+        node: "current",
+      };
+      break;
+  }
+
+  const config = {
+    comments: false,
+    presets: [["@babel/env", envOpts]],
+    plugins: [
+      // TODO: Use @babel/preset-flow when
+      // https://github.com/babel/babel/issues/7233 is fixed
+      "@babel/plugin-transform-flow-strip-types",
+      ["@babel/proposal-class-properties", { loose: true }],
+      "@babel/proposal-export-namespace-from",
+      "@babel/proposal-numeric-separator",
+      ["@babel/proposal-object-rest-spread", { useBuiltIns: true }],
+
+      // Explicitly use the lazy version of CommonJS modules.
+      convertESM ? ["@babel/transform-modules-commonjs", { lazy: true }] : null,
+    ].filter(Boolean),
+    overrides: [
+      {
+        test: "packages/babylon",
+        plugins: [
+          "babel-plugin-transform-charcodes",
+          ["@babel/transform-for-of", { assumeArray: true }],
+        ],
+      },
+      {
+        test: "./packages/babel-register",
+        plugins: [
+          // Override the root options to disable lazy imports for babel-register
+          // because otherwise the require hook will try to lazy-import things
+          // leading to dependency cycles.
+          convertESM ? "@babel/transform-modules-commonjs" : null,
+        ].filter(Boolean),
+      },
+    ],
+  };
+
+  // we need to do this as long as we do not test everything from source
+  if (includeCoverage) {
+    config.auxiliaryCommentBefore = "istanbul ignore next";
+    config.plugins.push("babel-plugin-istanbul");
+  }
+
+  return config;
 };
-
-switch (env) {
-  case "development":
-    envOpts.debug = true;
-  // fall-through
-  case "test":
-  case "cov":
-    envOpts.targets = {
-      node: "current",
-    };
-}
-
-const config = {
-  comments: false,
-  presets: [["@babel/env", envOpts]],
-  plugins: [
-    // TODO: Use @babel/preset-flow when
-    // https://github.com/babel/babel/issues/7233 is fixed
-    "@babel/plugin-transform-flow-strip-types",
-    ["@babel/proposal-class-properties", { loose: true }],
-    "@babel/proposal-export-namespace-from",
-    "@babel/proposal-numeric-separator",
-    ["@babel/proposal-object-rest-spread", { useBuiltIns: true }],
-  ],
-  overrides: [
-    {
-      test: "packages/babylon",
-      plugins: [
-        "babel-plugin-transform-charcodes",
-        ["@babel/transform-for-of", { assumeArray: true }],
-      ],
-    },
-  ],
-};
-
-// we need to do this as long as we do not test everything from source
-if (env === "cov") {
-  config.auxiliaryCommentBefore = "istanbul ignore next";
-  config.plugins.push("babel-plugin-istanbul");
-}
-
-module.exports = config;
--- a/.babelrc.rollup.js
+++ b/.babelrc.rollup.js
@@ -1,16 +0,0 @@
-"use strict";
-
-const cloneDeep = require("lodash/cloneDeep");
-const babelrc = require("./.babelrc.js");
-
-const config = cloneDeep(babelrc);
-
-const presetEnv = config.presets.find(preset => preset[0] === "@babel/env");
-
-if (!presetEnv) {
-  throw new Error("Error while extracting @preset/env from .babelrc.js");
-}
-
-presetEnv[1].modules = false;
-
-module.exports = config;
--- a/.eslintrc.json
+++ b/.eslintrc.json
@@ -22,6 +22,7 @@
      "files": [
        "packages/*/test/**/*.js",
        "codemods/*/test/**/*.js",
+        "packages/babel-helper-transform-fixture-test-runner/src/helpers.js",
        "test/**/*.js"
      ],
      "env": {
--- a/Gulpfile.js
+++ b/Gulpfile.js
@@ -98,8 +98,9 @@ function buildRollup(packages) {
        format: "cjs",
        plugins: [
          rollupBabel({
+            envName: "babylon",
            babelrc: false,
-            extends: "./.babelrc.rollup.js",
+            extends: "./.babelrc.js",
          }),
          rollupNodeResolve(),
        ],
--- a/27
+++ b/27
@@ -2,7 +2,7 @@ MAKEFLAGS = -j1
 FLOW_COMMIT = 622bbc4f07acb77eb1109830c70815f827401d90
 TEST262_COMMIT = 52f70e2f637731aae92a9c9a2d831310c3ab2e1e

-export NODE_ENV = test
+export BABEL_ENV = test

 # Fix color output until TravisCI fixes https://github.com/travis-ci/travis-ci/issues/7967
 export FORCE_COLOR = true
@@ -11,8 +11,7 @@ SOURCES = packages codemods

 .PHONY: build build-dist watch lint fix clean test-clean test-only test test-ci publish bootstrap

-build: clean
-	make clean-lib
+build: clean clean-lib
 	./node_modules/.bin/gulp build
 	node ./packages/babel-types/scripts/generateTypeHelpers.js
 	# call build again as the generated files might need to be compiled again.
@@ -22,7 +21,7 @@ build: clean
 	node scripts/generators/typescript.js > ./packages/babel-types/lib/index.d.ts
 	# generate docs
 	node scripts/generators/docs.js > ./packages/babel-types/README.md
-ifneq ("$(BABEL_ENV)", "cov")
+ifneq ("$(BABEL_COVERAGE)", "true")
 	make build-standalone
 	make build-preset-env-standalone
 endif
@@ -39,8 +38,7 @@ build-dist: build
 	cd packages/babel-runtime; \
 	node scripts/build-dist.js

-watch: clean
-	make clean-lib
+watch: clean clean-lib

 	# Ensure that build artifacts for types are created during local
 	# development too.
@@ -76,13 +74,11 @@ test-only:

 test: lint test-only

-test-ci:
-	make bootstrap
-	make test-only
+test-ci: bootstrap test-only

 test-ci-coverage: SHELL:=/bin/bash
 test-ci-coverage:
-	BABEL_ENV=cov make bootstrap
+	BABEL_COVERAGE=true BABEL_ENV=test make bootstrap
 	TEST_TYPE=cov ./scripts/test-cov.sh
 	bash <(curl -s https://codecov.io/bash) -f coverage/coverage-final.json

@@ -95,9 +91,7 @@ bootstrap-flow:
 test-flow:
 	node scripts/tests/flow/run_babylon_flow_tests.js

-test-flow-ci:
-	make bootstrap
-	make test-flow
+test-flow-ci: bootstrap test-flow

 test-flow-update-whitelist:
 	node scripts/tests/flow/run_babylon_flow_tests.js --update-whitelist
@@ -111,9 +105,7 @@ bootstrap-test262:
 test-test262:
 	node scripts/tests/test262/run_babylon_test262.js

-test-test262-ci:
-	make bootstrap
-	make test-test262
+test-test262-ci: bootstrap test-test262

 test-test262-update-whitelist:
 	node scripts/tests/test262/run_babylon_test262.js --update-whitelist
@@ -130,8 +122,7 @@ publish:
 	./node_modules/.bin/lerna publish --force-publish=* --exact --skip-temp-tag
 	make clean

-bootstrap:
-	make clean-all
+bootstrap: clean-all
 	yarn --ignore-engines
 	./node_modules/.bin/lerna bootstrap -- --ignore-engines
 	make build
--- a/codemods/babel-plugin-codemod-optional-catch-binding/package.json
+++ b/codemods/babel-plugin-codemod-optional-catch-binding/package.json
@@ -1,6 +1,6 @@
 {
  "name": "@babel/plugin-codemod-optional-catch-binding",
-  "version": "7.0.0-beta.42",
+  "version": "7.0.0-beta.43",
  "description": "Remove unused catch bindings",
  "repository": "https://github.com/babel/babel/tree/master/packages/babel-plugin-transform-remove-unused-catch-binding",
  "license": "MIT",
@@ -9,13 +9,13 @@
    "@babel/plugin"
  ],
  "dependencies": {
-    "@babel/plugin-syntax-optional-catch-binding": "7.0.0-beta.42"
+    "@babel/plugin-syntax-optional-catch-binding": "7.0.0-beta.43"
  },
  "peerDependencies": {
-    "@babel/core": "7.0.0-beta.42"
+    "@babel/core": "7.0.0-beta.43"
  },
  "devDependencies": {
-    "@babel/core": "7.0.0-beta.42",
-    "@babel/helper-plugin-test-runner": "7.0.0-beta.42"
+    "@babel/core": "7.0.0-beta.43",
+    "@babel/helper-plugin-test-runner": "7.0.0-beta.43"
  }
 }
--- a/lerna.json
+++ b/lerna.json
@@ -1,6 +1,6 @@
 {
  "lerna": "2.0.0-rc.4",
-  "version": "7.0.0-beta.42",
+  "version": "7.0.0-beta.43",
  "changelog": {
    "repo": "babel/babel",
    "labels": {
--- a/package.json
+++ b/package.json
@@ -10,18 +10,19 @@
    "test": "make test"
  },
  "devDependencies": {
-    "@babel/cli": "7.0.0-beta.41",
-    "@babel/core": "7.0.0-beta.41",
-    "@babel/preset-env": "7.0.0-beta.41",
-    "@babel/preset-flow": "7.0.0-beta.41",
-    "@babel/preset-stage-0": "7.0.0-beta.41",
-    "@babel/register": "7.0.0-beta.41",
+    "@babel/cli": "7.0.0-beta.42",
+    "@babel/core": "7.0.0-beta.42",
+    "@babel/plugin-transform-modules-commonjs": "7.0.0-beta.42",
+    "@babel/preset-env": "7.0.0-beta.42",
+    "@babel/preset-flow": "7.0.0-beta.42",
+    "@babel/preset-stage-0": "7.0.0-beta.42",
+    "@babel/register": "7.0.0-beta.42",
    "babel-core": "^7.0.0-0",
    "babel-eslint": "^8.0.1",
    "babel-jest": "^22.4.1",
    "babel-loader": "8.0.0-beta.0",
    "babel-plugin-transform-charcodes": "^0.1.0",
-    "babylon": "7.0.0-beta.41",
+    "babylon": "7.0.0-beta.42",
    "browserify": "^13.1.1",
    "bundle-collapser": "^1.2.1",
    "chai": "^4.1.0",
--- a/packages/babel-cli/package.json
+++ b/packages/babel-cli/package.json
@@ -1,6 +1,6 @@
 {
  "name": "@babel/cli",
-  "version": "7.0.0-beta.42",
+  "version": "7.0.0-beta.43",
  "description": "Babel command line.",
  "author": "Sebastian McKenzie <sebmck@gmail.com>",
  "homepage": "https://babeljs.io/",
@@ -29,11 +29,11 @@
    "chokidar": "^1.6.1"
  },
  "peerDependencies": {
-    "@babel/core": "7.0.0-beta.42"
+    "@babel/core": "7.0.0-beta.43"
  },
  "devDependencies": {
-    "@babel/core": "7.0.0-beta.42",
-    "@babel/helper-fixtures": "7.0.0-beta.42"
+    "@babel/core": "7.0.0-beta.43",
+    "@babel/helper-fixtures": "7.0.0-beta.43"
  },
  "bin": {
    "babel": "./bin/babel.js",
--- a/packages/babel-cli/src/babel/index.js
+++ b/packages/babel-cli/src/babel/index.js
@@ -32,7 +32,6 @@ function collect(value, previousValue): Array<string> {
  return previousValue ? previousValue.concat(values) : values;
 }

-/* eslint-disable max-len */
 // Standard Babel input configs.
 commander.option(
  "-f, --filename [filename]",
@@ -168,7 +167,6 @@ commander.option(
  "--delete-dir-on-start",
  "Delete the out directory before compilation",
 );
-/* eslint-enable max-len */

 commander.version(pkg.version + " (@babel/core " + version + ")");
 commander.usage("[options] <files ...>");
--- a/packages/babel-code-frame/package.json
+++ b/packages/babel-code-frame/package.json
@@ -1,6 +1,6 @@
 {
  "name": "@babel/code-frame",
-  "version": "7.0.0-beta.42",
+  "version": "7.0.0-beta.43",
  "description": "Generate errors that contain a code frame that point to source locations.",
  "author": "Sebastian McKenzie <sebmck@gmail.com>",
  "homepage": "https://babeljs.io/",
@@ -8,7 +8,7 @@
  "repository": "https://github.com/babel/babel/tree/master/packages/babel-code-frame",
  "main": "lib/index.js",
  "dependencies": {
-    "@babel/highlight": "7.0.0-beta.42"
+    "@babel/highlight": "7.0.0-beta.43"
  },
  "devDependencies": {
    "chalk": "^2.0.0",
--- a/packages/babel-core/package.json
+++ b/packages/babel-core/package.json
@@ -1,6 +1,6 @@
 {
  "name": "@babel/core",
-  "version": "7.0.0-beta.42",
+  "version": "7.0.0-beta.43",
  "description": "Babel compiler core.",
  "main": "./lib/index.js",
  "author": "Sebastian McKenzie <sebmck@gmail.com>",
@@ -28,13 +28,13 @@
    "./lib/transform-file-sync.js": "./lib/transform-file-sync-browser.js"
  },
  "dependencies": {
-    "@babel/code-frame": "7.0.0-beta.42",
-    "@babel/generator": "7.0.0-beta.42",
-    "@babel/helpers": "7.0.0-beta.42",
-    "@babel/template": "7.0.0-beta.42",
-    "@babel/traverse": "7.0.0-beta.42",
-    "@babel/types": "7.0.0-beta.42",
-    "babylon": "7.0.0-beta.42",
+    "@babel/code-frame": "7.0.0-beta.43",
+    "@babel/generator": "7.0.0-beta.43",
+    "@babel/helpers": "7.0.0-beta.43",
+    "@babel/template": "7.0.0-beta.43",
+    "@babel/traverse": "7.0.0-beta.43",
+    "@babel/types": "7.0.0-beta.43",
+    "babylon": "7.0.0-beta.43",
    "convert-source-map": "^1.1.0",
    "debug": "^3.1.0",
    "json5": "^0.5.0",
@@ -45,7 +45,7 @@
    "source-map": "^0.5.0"
  },
  "devDependencies": {
-    "@babel/helper-transform-fixture-test-runner": "7.0.0-beta.42",
-    "@babel/register": "7.0.0-beta.42"
+    "@babel/helper-transform-fixture-test-runner": "7.0.0-beta.43",
+    "@babel/register": "7.0.0-beta.43"
  }
 }
--- a/packages/babel-core/src/config/files/plugins.js
+++ b/packages/babel-core/src/config/files/plugins.js
@@ -105,7 +105,6 @@ function resolveStandardizedName(
      } catch (e2) {}

      if (resolvedOriginal) {
-        // eslint-disable-next-line max-len
        e.message += `\n- If you want to resolve "${name}", use "module:${name}"`;
      }
    }
@@ -119,7 +118,6 @@ function resolveStandardizedName(
    } catch (e2) {}

    if (resolvedBabel) {
-      // eslint-disable-next-line max-len
      e.message += `\n- Did you mean "@babel/${name}"?`;
    }

@@ -131,7 +129,6 @@ function resolveStandardizedName(
    } catch (e2) {}

    if (resolvedOppositeType) {
-      // eslint-disable-next-line max-len
      e.message += `\n- Did you accidentally pass a ${type} as a ${oppositeType}?`;
    }

@@ -143,8 +140,9 @@ const LOADING_MODULES = new Set();
 function requireModule(type: string, name: string): mixed {
  if (LOADING_MODULES.has(name)) {
    throw new Error(
-      // eslint-disable-next-line max-len
-      `Reentrant ${type} detected trying to load "${name}". This module is not ignored and is trying to load itself while compiling itself, leading to a dependency cycle. We recommend adding it to your "ignore" list in your babelrc, or to a .babelignore.`,
+      `Reentrant ${type} detected trying to load "${name}". This module is not ignored ` +
+        "and is trying to load itself while compiling itself, leading to a dependency cycle. " +
+        'We recommend adding it to your "ignore" list in your babelrc, or to a .babelignore.',
    );
  }

--- a/packages/babel-core/src/config/validation/removed.js
+++ b/packages/babel-core/src/config/validation/removed.js
@@ -1,5 +1,4 @@
 // @flow
-/* eslint max-len: "off" */

 export default {
  auxiliaryComment: {
@@ -16,36 +15,42 @@ export default {
  },
  externalHelpers: {
    message:
-      "Use the `external-helpers` plugin instead. Check out http://babeljs.io/docs/plugins/external-helpers/",
+      "Use the `external-helpers` plugin instead. " +
+      "Check out http://babeljs.io/docs/plugins/external-helpers/",
  },
  extra: {
    message: "",
  },
  jsxPragma: {
    message:
-      "use the `pragma` option in the `react-jsx` plugin . Check out http://babeljs.io/docs/plugins/transform-react-jsx/",
+      "use the `pragma` option in the `react-jsx` plugin. " +
+      "Check out http://babeljs.io/docs/plugins/transform-react-jsx/",
  },
  loose: {
    message:
-      "Specify the `loose` option for the relevant plugin you are using or use a preset that sets the option.",
+      "Specify the `loose` option for the relevant plugin you are using " +
+      "or use a preset that sets the option.",
  },
  metadataUsedHelpers: {
    message: "Not required anymore as this is enabled by default",
  },
  modules: {
    message:
-      "Use the corresponding module transform plugin in the `plugins` option. Check out http://babeljs.io/docs/plugins/#modules",
+      "Use the corresponding module transform plugin in the `plugins` option. " +
+      "Check out http://babeljs.io/docs/plugins/#modules",
  },
  nonStandard: {
    message:
-      "Use the `react-jsx` and `flow-strip-types` plugins to support JSX and Flow. Also check out the react preset http://babeljs.io/docs/plugins/preset-react/",
+      "Use the `react-jsx` and `flow-strip-types` plugins to support JSX and Flow. " +
+      "Also check out the react preset http://babeljs.io/docs/plugins/preset-react/",
  },
  optional: {
    message: "Put the specific transforms you want in the `plugins` option",
  },
  sourceMapName: {
    message:
-      "The `sourceMapName` option has been removed because it makes more sense for the tooling that calls Babel to assign `map.file` themselves.",
+      "The `sourceMapName` option has been removed because it makes more sense for the " +
+      "tooling that calls Babel to assign `map.file` themselves.",
  },
  stage: {
    message:
@@ -69,6 +74,7 @@ export default {
  sourceMapTarget: {
    version: 6,
    message:
-      "The `sourceMapTarget` option has been removed because it makes more sense for the tooling that calls Babel to assign `map.file` themselves.",
+      "The `sourceMapTarget` option has been removed because it makes more sense for the tooling " +
+      "that calls Babel to assign `map.file` themselves.",
  },
 };
--- a/packages/babel-core/test/resolution.js
+++ b/packages/babel-core/test/resolution.js
@@ -243,7 +243,6 @@ describe("addon resolution", function() {
        babelrc: false,
        presets: ["foo"],
      });
-      // eslint-disable-next-line max-len
    }).toThrow(
      /Cannot find module 'babel-preset-foo'.*\n- If you want to resolve "foo", use "module:foo"/,
    );
@@ -258,7 +257,6 @@ describe("addon resolution", function() {
        babelrc: false,
        plugins: ["foo"],
      });
-      // eslint-disable-next-line max-len
    }).toThrow(
      /Cannot find module 'babel-plugin-foo'.*\n- If you want to resolve "foo", use "module:foo"/,
    );
@@ -273,7 +271,6 @@ describe("addon resolution", function() {
        babelrc: false,
        presets: ["foo"],
      });
-      // eslint-disable-next-line max-len
    }).toThrow(
      /Cannot find module 'babel-preset-foo'.*\n- Did you mean "@babel\/foo"\?/,
    );
@@ -288,7 +285,6 @@ describe("addon resolution", function() {
        babelrc: false,
        plugins: ["foo"],
      });
-      // eslint-disable-next-line max-len
    }).toThrow(
      /Cannot find module 'babel-plugin-foo'.*\n- Did you mean "@babel\/foo"\?/,
    );
@@ -303,7 +299,6 @@ describe("addon resolution", function() {
        babelrc: false,
        presets: ["testplugin"],
      });
-      // eslint-disable-next-line max-len
    }).toThrow(
      /Cannot find module 'babel-preset-testplugin'.*\n- Did you accidentally pass a preset as a plugin\?/,
    );
@@ -318,7 +313,6 @@ describe("addon resolution", function() {
        babelrc: false,
        plugins: ["testpreset"],
      });
-      // eslint-disable-next-line max-len
    }).toThrow(
      /Cannot find module 'babel-plugin-testpreset'.*\n- Did you accidentally pass a plugin as a preset\?/,
    );
--- a/packages/babel-generator/package.json
+++ b/packages/babel-generator/package.json
@@ -1,6 +1,6 @@
 {
  "name": "@babel/generator",
-  "version": "7.0.0-beta.42",
+  "version": "7.0.0-beta.43",
  "description": "Turns an AST into code.",
  "author": "Sebastian McKenzie <sebmck@gmail.com>",
  "homepage": "https://babeljs.io/",
@@ -11,14 +11,14 @@
    "lib"
  ],
  "dependencies": {
-    "@babel/types": "7.0.0-beta.42",
+    "@babel/types": "7.0.0-beta.43",
    "jsesc": "^2.5.1",
    "lodash": "^4.2.0",
    "source-map": "^0.5.0",
    "trim-right": "^1.0.1"
  },
  "devDependencies": {
-    "@babel/helper-fixtures": "7.0.0-beta.42",
-    "babylon": "7.0.0-beta.42"
+    "@babel/helper-fixtures": "7.0.0-beta.43",
+    "babylon": "7.0.0-beta.43"
  }
 }
--- a/packages/babel-generator/src/generators/typescript.js
+++ b/packages/babel-generator/src/generators/typescript.js
@@ -302,6 +302,7 @@ export function TSMappedType(node) {
  this.token("{");
  this.space();
  if (readonly) {
+    tokenIfPlusMinus(this, readonly);
    this.word("readonly");
    this.space();
  }
@@ -315,6 +316,7 @@ export function TSMappedType(node) {
  this.token("]");

  if (optional) {
+    tokenIfPlusMinus(this, optional);
    this.token("?");
  }
  this.token(":");
@@ -324,6 +326,12 @@ export function TSMappedType(node) {
  this.token("}");
 }

+function tokenIfPlusMinus(self, tok) {
+  if (tok !== true) {
+    self.token(tok);
+  }
+}
+
 export function TSLiteralType(node) {
  this.print(node.literal, node);
 }
--- a/packages/babel-generator/test/fixtures/typescript/types-mapped/input.js
+++ b/packages/babel-generator/test/fixtures/typescript/types-mapped/input.js
@@ -1,2 +1,4 @@
-let map: { [P in string]: number; };
-let map: { readonly [P in string]?: number; };
+let map: { [P in string]: number };
+let map: { readonly [P in string]?: number };
+let map: { +readonly [P in string]+?: number };
+let map: { -readonly [P in string]-?: number };
--- a/packages/babel-generator/test/fixtures/typescript/types-mapped/output.js
+++ b/packages/babel-generator/test/fixtures/typescript/types-mapped/output.js
@@ -1,2 +1,4 @@
 let map: { [P in string]: number };
-let map: { readonly [P in string]?: number };
+let map: { readonly [P in string]?: number };
+let map: { +readonly [P in string]+?: number };
+let map: { -readonly [P in string]-?: number };
--- a/packages/babel-helper-annotate-as-pure/package.json
+++ b/packages/babel-helper-annotate-as-pure/package.json
@@ -1,11 +1,11 @@
 {
  "name": "@babel/helper-annotate-as-pure",
-  "version": "7.0.0-beta.42",
+  "version": "7.0.0-beta.43",
  "description": "Helper function to annotate paths and nodes with #__PURE__ comment",
  "repository": "https://github.com/babel/babel/tree/master/packages/babel-helper-annotate-as-pure",
  "license": "MIT",
  "main": "lib/index.js",
  "dependencies": {
-    "@babel/types": "7.0.0-beta.42"
+    "@babel/types": "7.0.0-beta.43"
  }
 }
--- a/packages/babel-helper-annotate-as-pure/test/index.js
+++ b/packages/babel-helper-annotate-as-pure/test/index.js
@@ -1,12 +1,11 @@
 import annotateAsPure from "../";
-import assert from "assert";

 describe("@babel/helper-annotate-as-pure", () => {
  it("will add leading comment", () => {
    const node = {};
    annotateAsPure(node);

-    assert.deepEqual(node.leadingComments, [
+    expect(node.leadingComments).toEqual([
      {
        type: "CommentBlock",
        value: "#__PURE__",
@@ -26,7 +25,7 @@ describe("@babel/helper-annotate-as-pure", () => {

    annotateAsPure(node);

-    assert.deepEqual(node.leadingComments, [
+    expect(node.leadingComments).toEqual([
      {
        type: "CommentBlock",
        value: "#__PURE__",
--- a/packages/babel-helper-bindify-decorators/package.json
+++ b/packages/babel-helper-bindify-decorators/package.json
@@ -1,12 +1,12 @@
 {
  "name": "@babel/helper-bindify-decorators",
-  "version": "7.0.0-beta.42",
+  "version": "7.0.0-beta.43",
  "description": "Helper function to bindify decorators",
  "repository": "https://github.com/babel/babel/tree/master/packages/babel-helper-bindify-decorators",
  "license": "MIT",
  "main": "lib/index.js",
  "dependencies": {
-    "@babel/traverse": "7.0.0-beta.42",
-    "@babel/types": "7.0.0-beta.42"
+    "@babel/traverse": "7.0.0-beta.43",
+    "@babel/types": "7.0.0-beta.43"
  }
 }
--- a/packages/babel-helper-builder-binary-assignment-operator-visitor/package.json
+++ b/packages/babel-helper-builder-binary-assignment-operator-visitor/package.json
@@ -1,12 +1,12 @@
 {
  "name": "@babel/helper-builder-binary-assignment-operator-visitor",
-  "version": "7.0.0-beta.42",
+  "version": "7.0.0-beta.43",
  "description": "Helper function to build binary assignment operator visitors",
  "repository": "https://github.com/babel/babel/tree/master/packages/babel-helper-builder-binary-assignment-operator-visitor",
  "license": "MIT",
  "main": "lib/index.js",
  "dependencies": {
-    "@babel/helper-explode-assignable-expression": "7.0.0-beta.42",
-    "@babel/types": "7.0.0-beta.42"
+    "@babel/helper-explode-assignable-expression": "7.0.0-beta.43",
+    "@babel/types": "7.0.0-beta.43"
  }
 }
--- a/packages/babel-helper-builder-react-jsx/package.json
+++ b/packages/babel-helper-builder-react-jsx/package.json
@@ -1,12 +1,12 @@
 {
  "name": "@babel/helper-builder-react-jsx",
-  "version": "7.0.0-beta.42",
+  "version": "7.0.0-beta.43",
  "description": "Helper function to build react jsx",
  "repository": "https://github.com/babel/babel/tree/master/packages/babel-helper-builder-react-jsx",
  "license": "MIT",
  "main": "lib/index.js",
  "dependencies": {
-    "@babel/types": "7.0.0-beta.42",
+    "@babel/types": "7.0.0-beta.43",
    "esutils": "^2.0.0"
  }
 }
--- a/packages/babel-helper-call-delegate/package.json
+++ b/packages/babel-helper-call-delegate/package.json
@@ -1,13 +1,13 @@
 {
  "name": "@babel/helper-call-delegate",
-  "version": "7.0.0-beta.42",
+  "version": "7.0.0-beta.43",
  "description": "Helper function to call delegate",
  "repository": "https://github.com/babel/babel/tree/master/packages/babel-helper-call-delegate",
  "license": "MIT",
  "main": "lib/index.js",
  "dependencies": {
-    "@babel/helper-hoist-variables": "7.0.0-beta.42",
-    "@babel/traverse": "7.0.0-beta.42",
-    "@babel/types": "7.0.0-beta.42"
+    "@babel/helper-hoist-variables": "7.0.0-beta.43",
+    "@babel/traverse": "7.0.0-beta.43",
+    "@babel/types": "7.0.0-beta.43"
  }
 }
--- a/packages/babel-helper-define-map/package.json
+++ b/packages/babel-helper-define-map/package.json
@@ -1,13 +1,13 @@
 {
  "name": "@babel/helper-define-map",
-  "version": "7.0.0-beta.42",
+  "version": "7.0.0-beta.43",
  "description": "Helper function to define a map",
  "repository": "https://github.com/babel/babel/tree/master/packages/babel-helper-define-map",
  "license": "MIT",
  "main": "lib/index.js",
  "dependencies": {
-    "@babel/helper-function-name": "7.0.0-beta.42",
-    "@babel/types": "7.0.0-beta.42",
+    "@babel/helper-function-name": "7.0.0-beta.43",
+    "@babel/types": "7.0.0-beta.43",
    "lodash": "^4.2.0"
  }
 }
--- a/packages/babel-helper-explode-assignable-expression/package.json
+++ b/packages/babel-helper-explode-assignable-expression/package.json
@@ -1,12 +1,12 @@
 {
  "name": "@babel/helper-explode-assignable-expression",
-  "version": "7.0.0-beta.42",
+  "version": "7.0.0-beta.43",
  "description": "Helper function to explode an assignable expression",
  "repository": "https://github.com/babel/babel/tree/master/packages/babel-helper-explode-assignable-expression",
  "license": "MIT",
  "main": "lib/index.js",
  "dependencies": {
-    "@babel/traverse": "7.0.0-beta.42",
-    "@babel/types": "7.0.0-beta.42"
+    "@babel/traverse": "7.0.0-beta.43",
+    "@babel/types": "7.0.0-beta.43"
  }
 }
--- a/packages/babel-helper-explode-class/package.json
+++ b/packages/babel-helper-explode-class/package.json
@@ -1,13 +1,13 @@
 {
  "name": "@babel/helper-explode-class",
-  "version": "7.0.0-beta.42",
+  "version": "7.0.0-beta.43",
  "description": "Helper function to explode class",
  "repository": "https://github.com/babel/babel/tree/master/packages/babel-helper-explode-class",
  "license": "MIT",
  "main": "lib/index.js",
  "dependencies": {
-    "@babel/helper-bindify-decorators": "7.0.0-beta.42",
-    "@babel/traverse": "7.0.0-beta.42",
-    "@babel/types": "7.0.0-beta.42"
+    "@babel/helper-bindify-decorators": "7.0.0-beta.43",
+    "@babel/traverse": "7.0.0-beta.43",
+    "@babel/types": "7.0.0-beta.43"
  }
 }
--- a/packages/babel-helper-fixtures/package.json
+++ b/packages/babel-helper-fixtures/package.json
@@ -1,6 +1,6 @@
 {
  "name": "@babel/helper-fixtures",
-  "version": "7.0.0-beta.42",
+  "version": "7.0.0-beta.43",
  "description": "Helper function to support fixtures",
  "author": "Sebastian McKenzie <sebmck@gmail.com>",
  "license": "MIT",
--- a/packages/babel-helper-function-name/package.json
+++ b/packages/babel-helper-function-name/package.json
@@ -1,13 +1,13 @@
 {
  "name": "@babel/helper-function-name",
-  "version": "7.0.0-beta.42",
+  "version": "7.0.0-beta.43",
  "description": "Helper function to change the property 'name' of every function",
  "repository": "https://github.com/babel/babel/tree/master/packages/babel-helper-function-name",
  "license": "MIT",
  "main": "lib/index.js",
  "dependencies": {
-    "@babel/helper-get-function-arity": "7.0.0-beta.42",
-    "@babel/template": "7.0.0-beta.42",
-    "@babel/types": "7.0.0-beta.42"
+    "@babel/helper-get-function-arity": "7.0.0-beta.43",
+    "@babel/template": "7.0.0-beta.43",
+    "@babel/types": "7.0.0-beta.43"
  }
 }
--- a/packages/babel-helper-get-function-arity/package.json
+++ b/packages/babel-helper-get-function-arity/package.json
@@ -1,11 +1,11 @@
 {
  "name": "@babel/helper-get-function-arity",
-  "version": "7.0.0-beta.42",
+  "version": "7.0.0-beta.43",
  "description": "Helper function to get function arity",
  "repository": "https://github.com/babel/babel/tree/master/packages/babel-helper-get-function-arity",
  "license": "MIT",
  "main": "lib/index.js",
  "dependencies": {
-    "@babel/types": "7.0.0-beta.42"
+    "@babel/types": "7.0.0-beta.43"
  }
 }
--- a/packages/babel-helper-hoist-variables/package.json
+++ b/packages/babel-helper-hoist-variables/package.json
@@ -1,11 +1,11 @@
 {
  "name": "@babel/helper-hoist-variables",
-  "version": "7.0.0-beta.42",
+  "version": "7.0.0-beta.43",
  "description": "Helper function to hoist variables",
  "repository": "https://github.com/babel/babel/tree/master/packages/babel-helper-hoist-variables",
  "license": "MIT",
  "main": "lib/index.js",
  "dependencies": {
-    "@babel/types": "7.0.0-beta.42"
+    "@babel/types": "7.0.0-beta.43"
  }
 }
--- a/packages/babel-helper-module-imports/package.json
+++ b/packages/babel-helper-module-imports/package.json
@@ -1,6 +1,6 @@
 {
  "name": "@babel/helper-module-imports",
-  "version": "7.0.0-beta.42",
+  "version": "7.0.0-beta.43",
  "description": "Babel helper functions for inserting module loads",
  "author": "Logan Smyth <loganfsmyth@gmail.com>",
  "homepage": "https://babeljs.io/",
@@ -8,10 +8,10 @@
  "repository": "https://github.com/babel/babel/tree/master/packages/babel-helper-module-imports",
  "main": "lib/index.js",
  "dependencies": {
-    "@babel/types": "7.0.0-beta.42",
+    "@babel/types": "7.0.0-beta.43",
    "lodash": "^4.2.0"
  },
  "devDependencies": {
-    "@babel/core": "7.0.0-beta.42"
+    "@babel/core": "7.0.0-beta.43"
  }
 }
--- a/packages/babel-helper-module-imports/test/index.js
+++ b/packages/babel-helper-module-imports/test/index.js
@@ -1,4 +1,3 @@
-import chai from "chai";
 import * as babel from "@babel/core";

 import { ImportInjector } from "../";
@@ -33,9 +32,9 @@ function test(sourceType, opts, initializer, expectedCode) {
    ],
  });

-  chai
-    .expect(result.code.replace(/\s+/g, " ").trim())
-    .to.equal((expectedCode || "").replace(/\s+/g, " ").trim());
+  expect(result.code.replace(/\s+/g, " ").trim()).toBe(
+    (expectedCode || "").replace(/\s+/g, " ").trim(),
+  );
 }
 const testScript = test.bind(undefined, "script");
 const testModule = test.bind(undefined, "module");
@@ -90,11 +89,9 @@ describe("@babel/helper-module-imports", () => {

      describe("using a CommonJS loader", () => {
        it("should import", () => {
-          chai
-            .expect(() => {
-              testScript({ importedType }, addNamespace());
-            })
-            .to.throw(Error, "Cannot import an ES6 module from CommonJS");
+          expect(() => {
+            testScript({ importedType }, addNamespace());
+          }).toThrow("Cannot import an ES6 module from CommonJS");
        });
      });
    });
@@ -302,11 +299,9 @@ describe("@babel/helper-module-imports", () => {

      describe("using a CommonJS loader", () => {
        it("should import", () => {
-          chai
-            .expect(() => {
-              testScript({ importedType }, addDefault());
-            })
-            .to.throw(Error, "Cannot import an ES6 module from CommonJS");
+          expect(() => {
+            testScript({ importedType }, addDefault());
+          }).toThrow("Cannot import an ES6 module from CommonJS");
        });
      });
    });
@@ -390,14 +385,12 @@ describe("@babel/helper-module-imports", () => {
        });

        it("should fail to import with force-enabled liveness", () => {
-          chai
-            .expect(() => {
-              testScript(
-                { importedInterop, ensureLiveReference: true },
-                addDefault(),
-              );
-            })
-            .to.throw(Error, "No live reference for commonjs default");
+          expect(() => {
+            testScript(
+              { importedInterop, ensureLiveReference: true },
+              addDefault(),
+            );
+          }).toThrow("No live reference for commonjs default");
        });
      });
    });
@@ -659,11 +652,9 @@ describe("@babel/helper-module-imports", () => {

      describe("using a CommonJS loader", () => {
        it("should import", () => {
-          chai
-            .expect(() => {
-              testScript({ importedType }, addNamed());
-            })
-            .to.throw(Error, "Cannot import an ES6 module from CommonJS");
+          expect(() => {
+            testScript({ importedType }, addNamed());
+          }).toThrow("Cannot import an ES6 module from CommonJS");
        });
      });
    });
@@ -967,11 +958,9 @@ describe("@babel/helper-module-imports", () => {

      describe("using a CommonJS loader", () => {
        it("should import", () => {
-          chai
-            .expect(() => {
-              testScript({ importedType }, addSideEffect());
-            })
-            .to.throw(Error, "Cannot import an ES6 module from CommonJS");
+          expect(() => {
+            testScript({ importedType }, addSideEffect());
+          }).toThrow("Cannot import an ES6 module from CommonJS");
        });
      });
    });
--- a/packages/babel-helper-module-transforms/package.json
+++ b/packages/babel-helper-module-transforms/package.json
@@ -1,6 +1,6 @@
 {
  "name": "@babel/helper-module-transforms",
-  "version": "7.0.0-beta.42",
+  "version": "7.0.0-beta.43",
  "description": "Babel helper functions for implementing ES6 module transformations",
  "author": "Logan Smyth <loganfsmyth@gmail.com>",
  "homepage": "https://babeljs.io/",
@@ -8,11 +8,11 @@
  "repository": "https://github.com/babel/babel/tree/master/packages/babel-helper-module-transforms",
  "main": "lib/index.js",
  "dependencies": {
-    "@babel/helper-module-imports": "7.0.0-beta.42",
-    "@babel/helper-simple-access": "7.0.0-beta.42",
-    "@babel/helper-split-export-declaration": "7.0.0-beta.42",
-    "@babel/template": "7.0.0-beta.42",
-    "@babel/types": "7.0.0-beta.42",
+    "@babel/helper-module-imports": "7.0.0-beta.43",
+    "@babel/helper-simple-access": "7.0.0-beta.43",
+    "@babel/helper-split-export-declaration": "7.0.0-beta.43",
+    "@babel/template": "7.0.0-beta.43",
+    "@babel/types": "7.0.0-beta.43",
    "lodash": "^4.2.0"
  }
 }
--- a/packages/babel-helper-optimise-call-expression/package.json
+++ b/packages/babel-helper-optimise-call-expression/package.json
@@ -1,11 +1,11 @@
 {
  "name": "@babel/helper-optimise-call-expression",
-  "version": "7.0.0-beta.42",
+  "version": "7.0.0-beta.43",
  "description": "Helper function to optimise call expression",
  "repository": "https://github.com/babel/babel/tree/master/packages/babel-helper-optimise-call-expression",
  "license": "MIT",
  "main": "lib/index.js",
  "dependencies": {
-    "@babel/types": "7.0.0-beta.42"
+    "@babel/types": "7.0.0-beta.43"
  }
 }
--- a/packages/babel-helper-plugin-test-runner/package.json
+++ b/packages/babel-helper-plugin-test-runner/package.json
@@ -1,11 +1,11 @@
 {
  "name": "@babel/helper-plugin-test-runner",
-  "version": "7.0.0-beta.42",
+  "version": "7.0.0-beta.43",
  "description": "Helper function to support test runner",
  "repository": "https://github.com/babel/babel/tree/master/packages/babel-helper-plugin-test-runner",
  "license": "MIT",
  "main": "lib/index.js",
  "dependencies": {
-    "@babel/helper-transform-fixture-test-runner": "7.0.0-beta.42"
+    "@babel/helper-transform-fixture-test-runner": "7.0.0-beta.43"
  }
 }
--- a/packages/babel-helper-plugin-utils/package.json
+++ b/packages/babel-helper-plugin-utils/package.json
@@ -1,6 +1,6 @@
 {
  "name": "@babel/helper-plugin-utils",
-  "version": "7.0.0-beta.42",
+  "version": "7.0.0-beta.43",
  "description": "General utilities for plugins to use",
  "author": "Logan Smyth <loganfsmyth@gmail.com>",
  "homepage": "https://babeljs.io/",
--- a/packages/babel-helper-regex/package.json
+++ b/packages/babel-helper-regex/package.json
@@ -1,6 +1,6 @@
 {
  "name": "@babel/helper-regex",
-  "version": "7.0.0-beta.42",
+  "version": "7.0.0-beta.43",
  "description": "Helper function to check for literal RegEx",
  "repository": "https://github.com/babel/babel/tree/master/packages/babel-helper-regex",
  "license": "MIT",
--- a/packages/babel-helper-remap-async-to-generator/package.json
+++ b/packages/babel-helper-remap-async-to-generator/package.json
@@ -1,15 +1,15 @@
 {
  "name": "@babel/helper-remap-async-to-generator",
-  "version": "7.0.0-beta.42",
+  "version": "7.0.0-beta.43",
  "description": "Helper function to remap async functions to generators",
  "repository": "https://github.com/babel/babel/tree/master/packages/babel-helper-remap-async-to-generator",
  "license": "MIT",
  "main": "lib/index.js",
  "dependencies": {
-    "@babel/helper-annotate-as-pure": "7.0.0-beta.42",
-    "@babel/helper-wrap-function": "7.0.0-beta.42",
-    "@babel/template": "7.0.0-beta.42",
-    "@babel/traverse": "7.0.0-beta.42",
-    "@babel/types": "7.0.0-beta.42"
+    "@babel/helper-annotate-as-pure": "7.0.0-beta.43",
+    "@babel/helper-wrap-function": "7.0.0-beta.43",
+    "@babel/template": "7.0.0-beta.43",
+    "@babel/traverse": "7.0.0-beta.43",
+    "@babel/types": "7.0.0-beta.43"
  }
 }
--- a/packages/babel-helper-replace-supers/package.json
+++ b/packages/babel-helper-replace-supers/package.json
@@ -1,14 +1,14 @@
 {
  "name": "@babel/helper-replace-supers",
-  "version": "7.0.0-beta.42",
+  "version": "7.0.0-beta.43",
  "description": "Helper function to replace supers",
  "repository": "https://github.com/babel/babel/tree/master/packages/babel-helper-replace-supers",
  "license": "MIT",
  "main": "lib/index.js",
  "dependencies": {
-    "@babel/helper-optimise-call-expression": "7.0.0-beta.42",
-    "@babel/template": "7.0.0-beta.42",
-    "@babel/traverse": "7.0.0-beta.42",
-    "@babel/types": "7.0.0-beta.42"
+    "@babel/helper-optimise-call-expression": "7.0.0-beta.43",
+    "@babel/template": "7.0.0-beta.43",
+    "@babel/traverse": "7.0.0-beta.43",
+    "@babel/types": "7.0.0-beta.43"
  }
 }
--- a/packages/babel-helper-simple-access/package.json
+++ b/packages/babel-helper-simple-access/package.json
@@ -1,6 +1,6 @@
 {
  "name": "@babel/helper-simple-access",
-  "version": "7.0.0-beta.42",
+  "version": "7.0.0-beta.43",
  "description": "Babel helper for ensuring that access to a given value is performed through simple accesses",
  "author": "Logan Smyth <loganfsmyth@gmail.com>",
  "homepage": "https://babeljs.io/",
@@ -8,8 +8,8 @@
  "repository": "https://github.com/babel/babel/tree/master/packages/babel-helper-simple-access",
  "main": "lib/index.js",
  "dependencies": {
-    "@babel/template": "7.0.0-beta.42",
-    "@babel/types": "7.0.0-beta.42",
+    "@babel/template": "7.0.0-beta.43",
+    "@babel/types": "7.0.0-beta.43",
    "lodash": "^4.2.0"
  }
 }
--- a/packages/babel-helper-split-export-declaration/package.json
+++ b/packages/babel-helper-split-export-declaration/package.json
@@ -1,11 +1,11 @@
 {
  "name": "@babel/helper-split-export-declaration",
-  "version": "7.0.0-beta.42",
+  "version": "7.0.0-beta.43",
  "description": "",
  "repository": "https://github.com/babel/babel/tree/master/packages/babel-helper-split-export-declaration",
  "license": "MIT",
  "main": "lib/index.js",
  "dependencies": {
-    "@babel/types": "7.0.0-beta.42"
+    "@babel/types": "7.0.0-beta.43"
  }
 }
--- a/packages/babel-helper-transform-fixture-test-runner/package.json
+++ b/packages/babel-helper-transform-fixture-test-runner/package.json
@@ -1,6 +1,6 @@
 {
  "name": "@babel/helper-transform-fixture-test-runner",
-  "version": "7.0.0-beta.42",
+  "version": "7.0.0-beta.43",
  "description": "Transform test runner for @babel/helper-fixtures module",
  "author": "Sebastian McKenzie <sebmck@gmail.com>",
  "homepage": "https://babeljs.io/",
@@ -8,10 +8,10 @@
  "repository": "https://github.com/babel/babel/tree/master/packages/babel-helper-transform-fixture-test-runner",
  "main": "lib/index.js",
  "dependencies": {
-    "@babel/code-frame": "7.0.0-beta.42",
-    "@babel/core": "7.0.0-beta.42",
-    "@babel/helper-fixtures": "7.0.0-beta.42",
-    "@babel/polyfill": "7.0.0-beta.42",
+    "@babel/code-frame": "7.0.0-beta.43",
+    "@babel/core": "7.0.0-beta.43",
+    "@babel/helper-fixtures": "7.0.0-beta.43",
+    "@babel/polyfill": "7.0.0-beta.43",
    "chai": "^4.1.0",
    "jest": "^22.4.2",
    "jest-diff": "^22.4.0",
--- a/packages/babel-helper-transform-fixture-test-runner/src/helpers.js
+++ b/packages/babel-helper-transform-fixture-test-runner/src/helpers.js
@@ -1,15 +1,7 @@
-import assert from "assert";
-
 export function assertNoOwnProperties(obj) {
-  assert.equal(Object.getOwnPropertyNames(obj).length, 0);
+  expect(Object.getOwnPropertyNames(obj)).toHaveLength(0);
 }

-export function assertHasOwnProperty() {}
-
-export function assertLacksOwnProperty() {}
-
 export function multiline(arr) {
  return arr.join("\n");
 }
-
-export const assertArrayEquals = assert.deepEqual;
--- a/packages/babel-helper-transform-fixture-test-runner/test/index.js
+++ b/packages/babel-helper-transform-fixture-test-runner/test/index.js
@@ -1,4 +1,3 @@
-import assert from "assert";
 import { runCodeInTestContext } from "..";

 describe("helper-transform-fixture-test-runner", function() {
@@ -6,13 +5,13 @@ describe("helper-transform-fixture-test-runner", function() {
    try {
      global.foo = "outer";
      runCodeInTestContext(`
-        assert.equal(global.foo, undefined);
+        expect(global.foo).toBeUndefined();
        global.foo = "inner";
      `);

-      assert.equal(global.foo, "outer");
+      expect(global.foo).toBe("outer");
      runCodeInTestContext(`
-        assert.equal(global.foo, "inner");
+        expect(global.foo).toBe("inner");
      `);
    } finally {
      delete global.foo;
--- a/packages/babel-helper-wrap-function/package.json
+++ b/packages/babel-helper-wrap-function/package.json
@@ -1,14 +1,14 @@
 {
  "name": "@babel/helper-wrap-function",
-  "version": "7.0.0-beta.42",
+  "version": "7.0.0-beta.43",
  "description": "Helper to wrap functions inside a function call.",
  "repository": "https://github.com/babel/babel/tree/master/packages/babel-helper-wrap-function",
  "license": "MIT",
  "main": "lib/index.js",
  "dependencies": {
-    "@babel/helper-function-name": "7.0.0-beta.42",
-    "@babel/template": "7.0.0-beta.42",
-    "@babel/traverse": "7.0.0-beta.42",
-    "@babel/types": "7.0.0-beta.42"
+    "@babel/helper-function-name": "7.0.0-beta.43",
+    "@babel/template": "7.0.0-beta.43",
+    "@babel/traverse": "7.0.0-beta.43",
+    "@babel/types": "7.0.0-beta.43"
  }
 }
--- a/packages/babel-helpers/package.json
+++ b/packages/babel-helpers/package.json
@@ -1,6 +1,6 @@
 {
  "name": "@babel/helpers",
-  "version": "7.0.0-beta.42",
+  "version": "7.0.0-beta.43",
  "description": "Collection of helper functions used by Babel transforms.",
  "author": "Sebastian McKenzie <sebmck@gmail.com>",
  "homepage": "https://babeljs.io/",
@@ -8,11 +8,11 @@
  "repository": "https://github.com/babel/babel/tree/master/packages/babel-helpers",
  "main": "lib/index.js",
  "dependencies": {
-    "@babel/template": "7.0.0-beta.42",
-    "@babel/traverse": "7.0.0-beta.42",
-    "@babel/types": "7.0.0-beta.42"
+    "@babel/template": "7.0.0-beta.43",
+    "@babel/traverse": "7.0.0-beta.43",
+    "@babel/types": "7.0.0-beta.43"
  },
  "devDependencies": {
-    "@babel/helper-plugin-test-runner": "7.0.0-beta.42"
+    "@babel/helper-plugin-test-runner": "7.0.0-beta.43"
  }
 }
--- a/packages/babel-helpers/src/helpers.js
+++ b/packages/babel-helpers/src/helpers.js
@@ -1,5 +1,3 @@
-/* eslint max-len: "off" */
-
 import template from "@babel/template";

 const helpers = {};
@@ -26,7 +24,9 @@ helpers.jsx = () => template.program.ast`

  export default function _createRawReactElement(type, props, key, children) {
    if (!REACT_ELEMENT_TYPE) {
-      REACT_ELEMENT_TYPE = (typeof Symbol === "function" && Symbol.for && Symbol.for("react.element")) || 0xeac7;
+      REACT_ELEMENT_TYPE = (
+        typeof Symbol === "function" && Symbol.for && Symbol.for("react.element")
+      ) || 0xeac7;
    }

    var defaultProps = type && type.defaultProps;
@@ -431,7 +431,8 @@ helpers.inherits = () => template.program.ast`
        configurable: true
      }
    });
-    if (superClass) Object.setPrototypeOf ? Object.setPrototypeOf(subClass, superClass) : subClass.__proto__ = superClass;
+    if (superClass)
+      Object.setPrototypeOf ? Object.setPrototypeOf(subClass, superClass) : subClass.__proto__ = superClass;
  }
 `;

--- a/packages/babel-highlight/package.json
+++ b/packages/babel-highlight/package.json
@@ -1,6 +1,6 @@
 {
  "name": "@babel/highlight",
-  "version": "7.0.0-beta.42",
+  "version": "7.0.0-beta.43",
  "description": "Syntax highlight JavaScript strings for output in terminals.",
  "author": "suchipi <me@suchipi.com>",
  "homepage": "https://babeljs.io/",
--- a/packages/babel-highlight/test/index.js
+++ b/packages/babel-highlight/test/index.js
@@ -1,4 +1,3 @@
-import assert from "assert";
 import chalk from "chalk";
 import stripAnsi from "strip-ansi";
 import highlight, { shouldHighlight, getChalk } from "..";
@@ -24,8 +23,8 @@ describe("@babel/highlight", function() {
        const code = "console.log('hi')";
        const result = highlight(code);
        const stripped = stripAnsi(result);
-        assert.ok(result.length > stripped.length);
-        assert.equal(stripped, code);
+        expect(result.length).toBeGreaterThan(stripped.length);
+        expect(stripped).toBe(code);
      });
    });

@@ -36,8 +35,8 @@ describe("@babel/highlight", function() {
        const code = "console.log('hi')";
        const result = highlight(code);
        const stripped = stripAnsi(result);
-        assert.ok(result.length === stripped.length);
-        assert.equal(result, code);
+        expect(result.length).toBe(stripped.length);
+        expect(result).toBe(code);
      });

      describe("and the forceColor option is passed", function() {
@@ -45,8 +44,8 @@ describe("@babel/highlight", function() {
          const code = "console.log('hi')";
          const result = highlight(code, { forceColor: true });
          const stripped = stripAnsi(result);
-          assert.ok(result.length > stripped.length);
-          assert.equal(stripped, code);
+          expect(result.length).toBeGreaterThan(stripped.length);
+          expect(stripped).toBe(code);
        });
      });
    });
@@ -57,7 +56,7 @@ describe("@babel/highlight", function() {
      stubColorSupport(true);

      it("returns true", function() {
-        assert.ok(shouldHighlight({}));
+        expect(shouldHighlight({})).toBeTruthy();
      });
    });

@@ -65,12 +64,12 @@ describe("@babel/highlight", function() {
      stubColorSupport(false);

      it("returns false", function() {
-        assert.ok(!shouldHighlight({}));
+        expect(shouldHighlight({})).toBeFalsy();
      });

      describe("and the forceColor option is passed", function() {
        it("returns true", function() {
-          assert.ok(shouldHighlight({ forceColor: true }));
+          expect(shouldHighlight({ forceColor: true })).toBeTruthy();
        });
      });
    });
@@ -82,14 +81,13 @@ describe("@babel/highlight", function() {

      describe("when forceColor is not passed", function() {
        it("returns a Chalk instance", function() {
-          assert.equal(getChalk({}).constructor, chalk.constructor);
+          expect(getChalk({}).constructor).toBe(chalk.constructor);
        });
      });

      describe("when forceColor is passed", function() {
        it("returns a Chalk instance", function() {
-          assert.equal(
-            getChalk({ forceColor: true }).constructor,
+          expect(getChalk({ forceColor: true }).constructor).toBe(
            chalk.constructor,
          );
        });
@@ -101,14 +99,13 @@ describe("@babel/highlight", function() {

      describe("when forceColor is not passed", function() {
        it("returns a Chalk instance", function() {
-          assert.equal(getChalk({}).constructor, chalk.constructor);
+          expect(getChalk({}).constructor).toBe(chalk.constructor);
        });
      });

      describe("when forceColor is passed", function() {
        it("returns a Chalk instance", function() {
-          assert.equal(
-            getChalk({ forceColor: true }).constructor,
+          expect(getChalk({ forceColor: true }).constructor).toBe(
            chalk.constructor,
          );
        });
--- a/packages/babel-node/package.json
+++ b/packages/babel-node/package.json
@@ -1,6 +1,6 @@
 {
  "name": "@babel/node",
-  "version": "7.0.0-beta.42",
+  "version": "7.0.0-beta.43",
  "description": "Babel command line",
  "author": "Sebastian McKenzie <sebmck@gmail.com>",
  "homepage": "https://babeljs.io/",
@@ -16,8 +16,8 @@
    "compiler"
  ],
  "dependencies": {
-    "@babel/polyfill": "7.0.0-beta.42",
-    "@babel/register": "7.0.0-beta.42",
+    "@babel/polyfill": "7.0.0-beta.43",
+    "@babel/register": "7.0.0-beta.43",
    "commander": "^2.8.1",
    "fs-readdir-recursive": "^1.0.0",
    "lodash": "^4.2.0",
@@ -25,11 +25,11 @@
    "v8flags": "^3.0.0"
  },
  "peerDependencies": {
-    "@babel/core": "7.0.0-beta.42"
+    "@babel/core": "7.0.0-beta.43"
  },
  "devDependencies": {
-    "@babel/core": "7.0.0-beta.42",
-    "@babel/helper-fixtures": "7.0.0-beta.42"
+    "@babel/core": "7.0.0-beta.43",
+    "@babel/helper-fixtures": "7.0.0-beta.43"
  },
  "bin": {
    "babel-node": "./bin/babel-node.js"
--- a/packages/babel-node/src/_babel-node.js
+++ b/packages/babel-node/src/_babel-node.js
@@ -21,8 +21,8 @@ function collect(value, previousValue): Array<string> {
  return previousValue ? previousValue.concat(values) : values;
 }

-/* eslint-disable max-len */
 program.option("-e, --eval [script]", "Evaluate script");
+program.option("-r, --require [module]", "Require module");
 program.option("-p, --print [code]", "Evaluate script and print result");
 program.option(
  "-o, --only [globs]",
@@ -41,7 +41,6 @@ program.option(
 );
 program.option("-w, --plugins [string]", "", collect);
 program.option("-b, --presets [string]", "", collect);
-/* eslint-enable max-len */

 program.version(pkg.version);
 program.usage("[options] [ -e script | script.js ] [arguments]");
@@ -132,7 +131,11 @@ if (program.eval || program.print) {

      if (arg[0] === "-") {
        const parsedArg = program[arg.slice(2)];
-        if (parsedArg && parsedArg !== true) {
+        if (
+          arg === "-r" ||
+          arg === "--require" ||
+          (parsedArg && parsedArg !== true)
+        ) {
          ignoreNext = true;
        }
      } else {
@@ -142,6 +145,15 @@ if (program.eval || program.print) {
    });
    args = args.slice(i);

+    // We have to handle require ourselfs, as we want to require it in the context of babel-register
+    if (program.require) {
+      let requireFileName = program.require;
+      if (!path.isAbsolute(requireFileName)) {
+        requireFileName = path.join(process.cwd(), requireFileName);
+      }
+      require(requireFileName);
+    }
+
    // make the filename absolute
    const filename = args[0];
    if (!path.isAbsolute(filename)) {
--- a/packages/babel-node/src/babel-node.js
+++ b/packages/babel-node/src/babel-node.js
@@ -34,7 +34,7 @@ function getNormalizedV8Flag(arg) {
 }

 getV8Flags(function(err, v8Flags) {
-  babelArgs.forEach(function(arg) {
+  babelArgs.forEach(function(arg, index) {
    const flag = arg.split("=")[0];

    switch (flag) {
@@ -50,6 +50,13 @@ getV8Flags(function(err, v8Flags) {
        args.unshift(arg);
        break;

+      case "-r":
+      case "--require":
+        args.push(flag);
+        args.push(babelArgs[index + 1]);
+        delete babelArgs[index + 1];
+        break;
+
      case "-gc":
        args.unshift("--expose-gc");
        break;
--- a/packages/babel-node/test/index.js
+++ b/packages/babel-node/test/index.js
@@ -1,13 +1,11 @@
 const includes = require("lodash/includes");
 const readdir = require("fs-readdir-recursive");
 const helper = require("@babel/helper-fixtures");
-const assert = require("assert");
 const rimraf = require("rimraf");
 const outputFileSync = require("output-file-sync");
 const child = require("child_process");
 const merge = require("lodash/merge");
 const path = require("path");
-const chai = require("chai");
 const fs = require("fs");

 const fixtureLoc = path.join(__dirname, "fixtures");
@@ -53,18 +51,12 @@ const assertTest = function(stdout, stderr, opts) {

  if (opts.stderr) {
    if (opts.stderrContains) {
-      assert.ok(
-        includes(stderr, expectStderr),
-        "stderr " +
-          JSON.stringify(stderr) +
-          " didn't contain " +
-          JSON.stringify(expectStderr),
-      );
+      expect(includes(stderr, expectStderr)).toBeTruthy();
    } else {
-      chai.expect(stderr).to.equal(expectStderr, "stderr didn't match");
+      expect(stderr).toBe(expectStderr);
    }
  } else if (stderr) {
-    throw new Error("stderr:\n" + stderr);
+    throw new Error("stderr:\n" + stderr + "\n\nstdout:\n" + stdout);
  }

  const expectStdout = opts.stdout.trim();
@@ -73,15 +65,9 @@ const assertTest = function(stdout, stderr, opts) {

  if (opts.stdout) {
    if (opts.stdoutContains) {
-      assert.ok(
-        includes(stdout, expectStdout),
-        "stdout " +
-          JSON.stringify(stdout) +
-          " didn't contain " +
-          JSON.stringify(expectStdout),
-      );
+      expect(includes(stdout, expectStdout)).toBeTruthy();
    } else {
-      chai.expect(stdout).to.equal(expectStdout, "stdout didn't match");
+      expect(stdout).toBe(expectStdout);
    }
  } else if (stdout) {
    throw new Error("stdout:\n" + stdout);
@@ -92,24 +78,19 @@ const assertTest = function(stdout, stderr, opts) {

    Object.keys(actualFiles).forEach(function(filename) {
      if (!opts.inFiles.hasOwnProperty(filename)) {
-        const expect = opts.outFiles[filename];
+        const expected = opts.outFiles[filename];
        const actual = actualFiles[filename];

-        chai.expect(expect, "Output is missing: " + filename).to.not.be
-          .undefined;
+        expect(expected).not.toBeUndefined();

-        if (expect) {
-          chai
-            .expect(actual)
-            .to.equal(expect, "Compiled output does not match: " + filename);
+        if (expected) {
+          expect(actual).toBe(expected);
        }
      }
    });

    Object.keys(opts.outFiles).forEach(function(filename) {
-      chai
-        .expect(actualFiles, "Extraneous file in output: " + filename)
-        .to.contain.key(filename);
+      expect(actualFiles).toHaveProperty(filename);
    });
  }
 };
--- a/packages/babel-plugin-external-helpers/package.json
+++ b/packages/babel-plugin-external-helpers/package.json
@@ -1,6 +1,6 @@
 {
  "name": "@babel/plugin-external-helpers",
-  "version": "7.0.0-beta.42",
+  "version": "7.0.0-beta.43",
  "description": "This plugin contains helper functions that’ll be placed at the top of the generated code",
  "repository": "https://github.com/babel/babel/tree/master/packages/babel-plugin-external-helpers",
  "license": "MIT",
@@ -9,13 +9,13 @@
    "babel-plugin"
  ],
  "dependencies": {
-    "@babel/helper-plugin-utils": "7.0.0-beta.42"
+    "@babel/helper-plugin-utils": "7.0.0-beta.43"
  },
  "peerDependencies": {
-    "@babel/core": "7.0.0-beta.42"
+    "@babel/core": "7.0.0-beta.43"
  },
  "devDependencies": {
-    "@babel/core": "7.0.0-beta.42",
-    "@babel/helper-plugin-test-runner": "7.0.0-beta.42"
+    "@babel/core": "7.0.0-beta.43",
+    "@babel/helper-plugin-test-runner": "7.0.0-beta.43"
  }
 }
--- a/packages/babel-plugin-proposal-async-generator-functions/package.json
+++ b/packages/babel-plugin-proposal-async-generator-functions/package.json
@@ -1,6 +1,6 @@
 {
  "name": "@babel/plugin-proposal-async-generator-functions",
-  "version": "7.0.0-beta.42",
+  "version": "7.0.0-beta.43",
  "description": "Turn async generator functions into ES2015 generators",
  "repository": "https://github.com/babel/babel/tree/master/packages/babel-plugin-proposal-async-generator-functions",
  "license": "MIT",
@@ -9,15 +9,15 @@
    "babel-plugin"
  ],
  "dependencies": {
-    "@babel/helper-plugin-utils": "7.0.0-beta.42",
-    "@babel/helper-remap-async-to-generator": "7.0.0-beta.42",
-    "@babel/plugin-syntax-async-generators": "7.0.0-beta.42"
+    "@babel/helper-plugin-utils": "7.0.0-beta.43",
+    "@babel/helper-remap-async-to-generator": "7.0.0-beta.43",
+    "@babel/plugin-syntax-async-generators": "7.0.0-beta.43"
  },
  "peerDependencies": {
-    "@babel/core": "7.0.0-beta.42"
+    "@babel/core": "7.0.0-beta.43"
  },
  "devDependencies": {
-    "@babel/core": "7.0.0-beta.42",
-    "@babel/helper-plugin-test-runner": "7.0.0-beta.42"
+    "@babel/core": "7.0.0-beta.43",
+    "@babel/helper-plugin-test-runner": "7.0.0-beta.43"
  }
 }
--- a/packages/babel-plugin-proposal-async-generator-functions/test/fixtures/async-generators/declaration-exec/exec.js
+++ b/packages/babel-plugin-proposal-async-generator-functions/test/fixtures/async-generators/declaration-exec/exec.js
@@ -20,5 +20,5 @@ async function main() {
 }

 return main().then(() => {
-  assert.deepEqual(actual, expected);
+  expect(actual).toEqual(expected);
 });
--- a/packages/babel-plugin-proposal-async-generator-functions/test/fixtures/async-generators/yield-exec/exec.js
+++ b/packages/babel-plugin-proposal-async-generator-functions/test/fixtures/async-generators/yield-exec/exec.js
@@ -20,5 +20,5 @@ async function main() {
 }

 return main().then(() => {
-  assert.deepEqual(actual, expected);
+  expect(actual).toEqual(expected);
 });
--- a/packages/babel-plugin-proposal-async-generator-functions/test/fixtures/for-await/async-generator-exec/exec.js
+++ b/packages/babel-plugin-proposal-async-generator-functions/test/fixtures/for-await/async-generator-exec/exec.js
@@ -21,6 +21,6 @@ function forEach(ai, fn) {
 var output = 0;
 return forEach(genAnswers(), function(val) { output += val.value })
 .then(function () {
-  assert.equal(output, 42);
+  expect(output).toBe(42);
 });

--- a/packages/babel-plugin-proposal-class-properties/package.json
+++ b/packages/babel-plugin-proposal-class-properties/package.json
@@ -1,6 +1,6 @@
 {
  "name": "@babel/plugin-proposal-class-properties",
-  "version": "7.0.0-beta.42",
+  "version": "7.0.0-beta.43",
  "description": "This plugin transforms static class properties as well as properties declared with the property initializer syntax",
  "repository": "https://github.com/babel/babel/tree/master/packages/babel-plugin-proposal-class-properties",
  "license": "MIT",
@@ -9,15 +9,15 @@
    "babel-plugin"
  ],
  "dependencies": {
-    "@babel/helper-function-name": "7.0.0-beta.42",
-    "@babel/helper-plugin-utils": "7.0.0-beta.42",
-    "@babel/plugin-syntax-class-properties": "7.0.0-beta.42"
+    "@babel/helper-function-name": "7.0.0-beta.43",
+    "@babel/helper-plugin-utils": "7.0.0-beta.43",
+    "@babel/plugin-syntax-class-properties": "7.0.0-beta.43"
  },
  "peerDependencies": {
-    "@babel/core": "7.0.0-beta.42"
+    "@babel/core": "7.0.0-beta.43"
  },
  "devDependencies": {
-    "@babel/core": "7.0.0-beta.42",
-    "@babel/helper-plugin-test-runner": "7.0.0-beta.42"
+    "@babel/core": "7.0.0-beta.43",
+    "@babel/helper-plugin-test-runner": "7.0.0-beta.43"
  }
 }
--- a/packages/babel-plugin-proposal-class-properties/test/fixtures/general/computed-initialization-order/exec.js
+++ b/packages/babel-plugin-proposal-class-properties/test/fixtures/general/computed-initialization-order/exec.js
@@ -24,15 +24,15 @@ class MyClass {
 const inst = new MyClass();

 const expectedOrder = [1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15];
-assert.deepEqual(actualOrder, expectedOrder);
+expect(actualOrder).toEqual(expectedOrder);

-assert.equal(MyClass[1], 10);
-assert.equal(inst[2], 13);
-assert.equal(inst[3], "foo");
+expect(MyClass[1]).toBe(10);
+expect(inst[2]).toBe(13);
+expect(inst[3]).toBe("foo");
 inst[4] = "baz";
-assert.equal(inst.bar, "baz");
-assert.equal(inst[5], 14);
-assert.equal(MyClass[6], 11);
-assert.equal(MyClass[7], 12);
-assert.ok(typeof inst[8] === "function");
-assert.equal(inst[9], 15);
+expect(inst.bar).toBe("baz");
+expect(inst[5]).toBe(14);
+expect(MyClass[6]).toBe(11);
+expect(MyClass[7]).toBe(12);
+expect(typeof inst[8]).toBe("function");
+expect(inst[9]).toBe(15);
--- a/packages/babel-plugin-proposal-class-properties/test/fixtures/general/instance-computed/exec.js
+++ b/packages/babel-plugin-proposal-class-properties/test/fixtures/general/instance-computed/exec.js
@@ -5,9 +5,9 @@ function test(x) {
  }

  x = 'deadbeef';
-  assert.strictEqual(new F().foo, 1);
+  expect(new F().foo).toBe(1);
  x = 'wrong';
-  assert.strictEqual(new F().foo, 1);
+  expect(new F().foo).toBe(1);
 }

 test('foo');
--- a/packages/babel-plugin-proposal-class-properties/test/fixtures/general/instance-computed/input.js
+++ b/packages/babel-plugin-proposal-class-properties/test/fixtures/general/instance-computed/input.js
@@ -5,9 +5,9 @@ function test(x) {
  }

  x = 'deadbeef';
-  assert.strictEqual(new F().foo, 1);
+  expect(new F().foo).toBe(1);
  x = 'wrong';
-  assert.strictEqual(new F().foo, 1);
+  expect(new F().foo).toBe(1);
 }

 test('foo');
--- a/packages/babel-plugin-proposal-class-properties/test/fixtures/general/instance-computed/output.js
+++ b/packages/babel-plugin-proposal-class-properties/test/fixtures/general/instance-computed/output.js
@@ -12,9 +12,9 @@ function test(x) {
  };

  x = 'deadbeef';
-  assert.strictEqual(new F().foo, 1);
+  expect(new F().foo).toBe(1);
  x = 'wrong';
-  assert.strictEqual(new F().foo, 1);
+  expect(new F().foo).toBe(1);
 }

 test('foo');
--- a/packages/babel-plugin-proposal-class-properties/test/fixtures/general/static-infer-name/exec.js
+++ b/packages/babel-plugin-proposal-class-properties/test/fixtures/general/static-infer-name/exec.js
@@ -2,6 +2,6 @@ var Foo = class {
  static num = 0;
 }

-assert.equal(Foo.num, 0);
-assert.equal(Foo.num = 1, 1);
-assert.equal(Foo.name, "Foo");
+expect(Foo.num).toBe(0);
+expect(Foo.num = 1).toBe(1);
+expect(Foo.name).toBe("Foo");
--- a/packages/babel-plugin-proposal-class-properties/test/fixtures/general/static-undefined/exec.js
+++ b/packages/babel-plugin-proposal-class-properties/test/fixtures/general/static-undefined/exec.js
@@ -2,5 +2,5 @@ class Foo {
  static num;
 }

-assert.equal("num" in Foo, true);
-assert.equal(Foo.num, undefined);
+expect("num" in Foo).toBe(true);
+expect(Foo.num).toBeUndefined();
--- a/packages/babel-plugin-proposal-class-properties/test/fixtures/general/static/exec.js
+++ b/packages/babel-plugin-proposal-class-properties/test/fixtures/general/static/exec.js
@@ -3,7 +3,7 @@ class Foo {
  static str = "foo";
 }

-assert.equal(Foo.num, 0);
-assert.equal(Foo.num = 1, 1);
-assert.equal(Foo.str, "foo");
-assert.equal(Foo.str = "bar", "bar");
+expect(Foo.num).toBe(0);
+expect(Foo.num = 1).toBe(1);
+expect(Foo.str).toBe("foo");
+expect(Foo.str = "bar").toBe("bar");
--- a/packages/babel-plugin-proposal-class-properties/test/fixtures/loose/instance-computed/exec.js
+++ b/packages/babel-plugin-proposal-class-properties/test/fixtures/loose/instance-computed/exec.js
@@ -5,9 +5,9 @@ function test(x) {
  }

  x = 'deadbeef';
-  assert.strictEqual(new F().foo, 1);
+  expect(new F().foo).toBe(1);
  x = 'wrong';
-  assert.strictEqual(new F().foo, 1);
+  expect(new F().foo).toBe(1);
 }

 test('foo');
--- a/packages/babel-plugin-proposal-class-properties/test/fixtures/loose/instance-computed/input.js
+++ b/packages/babel-plugin-proposal-class-properties/test/fixtures/loose/instance-computed/input.js
@@ -5,9 +5,9 @@ function test(x) {
  }

  x = 'deadbeef';
-  assert.strictEqual(new F().foo, 1);
+  expect(new F().foo).toBe(1);
  x = 'wrong';
-  assert.strictEqual(new F().foo, 1);
+  expect(new F().foo).toBe(1);
 }

 test('foo');
--- a/packages/babel-plugin-proposal-class-properties/test/fixtures/loose/instance-computed/output.js
+++ b/packages/babel-plugin-proposal-class-properties/test/fixtures/loose/instance-computed/output.js
@@ -7,9 +7,9 @@ function test(x) {
  };

  x = 'deadbeef';
-  assert.strictEqual(new F().foo, 1);
+  expect(new F().foo).toBe(1);
  x = 'wrong';
-  assert.strictEqual(new F().foo, 1);
+  expect(new F().foo).toBe(1);
 }

 test('foo');
--- a/packages/babel-plugin-proposal-class-properties/test/fixtures/loose/static-infer-name/exec.js
+++ b/packages/babel-plugin-proposal-class-properties/test/fixtures/loose/static-infer-name/exec.js
@@ -2,6 +2,6 @@ var Foo = class {
  static num = 0;
 }

-assert.equal(Foo.num, 0);
-assert.equal(Foo.num = 1, 1);
-assert.equal(Foo.name, "Foo");
+expect(Foo.num).toBe(0);
+expect(Foo.num = 1).toBe(1);
+expect(Foo.name).toBe("Foo");
--- a/packages/babel-plugin-proposal-class-properties/test/fixtures/loose/static-undefined/exec.js
+++ b/packages/babel-plugin-proposal-class-properties/test/fixtures/loose/static-undefined/exec.js
@@ -2,5 +2,5 @@ class Foo {
  static num;
 }

-assert.equal("num" in Foo, true);
-assert.equal(Foo.num, undefined);
+expect("num" in Foo).toBe(true);
+expect(Foo.num).toBeUndefined();
--- a/packages/babel-plugin-proposal-class-properties/test/fixtures/loose/static/exec.js
+++ b/packages/babel-plugin-proposal-class-properties/test/fixtures/loose/static/exec.js
@@ -3,7 +3,7 @@ class Foo {
  static str = "foo";
 }

-assert.equal(Foo.num, 0);
-assert.equal(Foo.num = 1, 1);
-assert.equal(Foo.str, "foo");
-assert.equal(Foo.str = "bar", "bar");
+expect(Foo.num).toBe(0);
+expect(Foo.num = 1).toBe(1);
+expect(Foo.str).toBe("foo");
+expect(Foo.str = "bar").toBe("bar");
--- a/packages/babel-plugin-proposal-decorators/package.json
+++ b/packages/babel-plugin-proposal-decorators/package.json
@@ -1,6 +1,6 @@
 {
  "name": "@babel/plugin-proposal-decorators",
-  "version": "7.0.0-beta.42",
+  "version": "7.0.0-beta.43",
  "author": "Logan Smyth <loganfsmyth@gmail.com>",
  "license": "MIT",
  "description": "Compile class and object decorators to ES5",
@@ -12,14 +12,14 @@
    "decorators"
  ],
  "dependencies": {
-    "@babel/helper-plugin-utils": "7.0.0-beta.42",
-    "@babel/plugin-syntax-decorators": "7.0.0-beta.42"
+    "@babel/helper-plugin-utils": "7.0.0-beta.43",
+    "@babel/plugin-syntax-decorators": "7.0.0-beta.43"
  },
  "peerDependencies": {
-    "@babel/core": "7.0.0-beta.42"
+    "@babel/core": "7.0.0-beta.43"
  },
  "devDependencies": {
-    "@babel/core": "7.0.0-beta.42",
-    "@babel/helper-plugin-test-runner": "7.0.0-beta.42"
+    "@babel/core": "7.0.0-beta.43",
+    "@babel/helper-plugin-test-runner": "7.0.0-beta.43"
  }
 }
--- a/packages/babel-plugin-proposal-decorators/test/fixtures/class-constructors/mutate-existing-constructor/exec.js
+++ b/packages/babel-plugin-proposal-decorators/test/fixtures/class-constructors/mutate-existing-constructor/exec.js
@@ -7,4 +7,4 @@ class Parent {
  parent() {};
 }

-assert.equal(Parent.staticProp, "prop");
+expect(Parent.staticProp).toBe("prop");
--- a/packages/babel-plugin-proposal-decorators/test/fixtures/class-constructors/return-new-constructor/exec.js
+++ b/packages/babel-plugin-proposal-decorators/test/fixtures/class-constructors/return-new-constructor/exec.js
@@ -9,5 +9,5 @@ class Parent {
  parent(){}
 }

-assert.equal(typeof Parent.prototype.parent, "function")
-assert.equal(typeof Parent.prototype.child, "function")
+expect(typeof Parent.prototype.parent).toBe("function");
+expect(typeof Parent.prototype.child).toBe("function");
--- a/packages/babel-plugin-proposal-decorators/test/fixtures/class-export-default/exec.mjs
+++ b/packages/babel-plugin-proposal-decorators/test/fixtures/class-export-default/exec.mjs
@@ -11,4 +11,4 @@ export default class Foo {
  }
 }

-assert.deepEqual(calls, ["Foo"]);
+expect(calls).toEqual(["Foo"]);
--- a/packages/babel-plugin-proposal-decorators/test/fixtures/class-ordering/order/exec.js
+++ b/packages/babel-plugin-proposal-decorators/test/fixtures/class-ordering/order/exec.js
@@ -25,4 +25,4 @@ class Example {
  prop2 = 2;
 }

-assert.deepEqual(calls, [1, 2, 3, 4, 5, 6, 7, 8, 9, 10]);
+expect(calls).toEqual([1, 2, 3, 4, 5, 6, 7, 8, 9, 10]);
--- a/packages/babel-plugin-proposal-decorators/test/fixtures/class-ordering/reverse-order/exec.js
+++ b/packages/babel-plugin-proposal-decorators/test/fixtures/class-ordering/reverse-order/exec.js
@@ -26,4 +26,4 @@ class Example2 {
  prop2 = 2;
 }

-assert.deepEqual(calls, [1, 2, 3, 4, 5, 6, 7, 8, 9, 10]);
+expect(calls).toEqual([1, 2, 3, 4, 5, 6, 7, 8, 9, 10]);
--- a/packages/babel-plugin-proposal-decorators/test/fixtures/class-prototype-methods/mutate-descriptor/exec.js
+++ b/packages/babel-plugin-proposal-decorators/test/fixtures/class-prototype-methods/mutate-descriptor/exec.js
@@ -1,7 +1,7 @@
 function dec(target, name, descriptor) {
-  assert(target);
-  assert.equal(typeof name, "string");
-  assert.equal(typeof descriptor, "object");
+  expect(target).toBeTruthy();
+  expect(typeof name).toBe("string");
+  expect(typeof descriptor).toBe("object");

  target.decoratedProps = (target.decoratedProps || []).concat([name]);

@@ -58,8 +58,8 @@ class Example {
  }
 }

-assert(Example.prototype.hasOwnProperty('decoratedProps'));
-assert.deepEqual(Example.prototype.decoratedProps, [
+expect(Example.prototype).toHaveProperty('decoratedProps');
+expect(Example.prototype.decoratedProps).toEqual([
  "enumconfwrite",
  "enumconf",
  "enumwrite",
@@ -74,42 +74,42 @@ const inst = new Example();

 const descs = Object.getOwnPropertyDescriptors(Example.prototype);

-assert(descs.enumconfwrite.enumerable);
-assert(descs.enumconfwrite.writable);
-assert(descs.enumconfwrite.configurable);
-assert.equal(inst.enumconfwrite(), "__1__");
+expect(descs.enumconfwrite.enumerable).toBeTruthy();
+expect(descs.enumconfwrite.writable).toBeTruthy();
+expect(descs.enumconfwrite.configurable).toBeTruthy();
+expect(inst.enumconfwrite()).toBe("__1__");

-assert(descs.enumconf.enumerable);
-assert.equal(descs.enumconf.writable, false);
-assert(descs.enumconf.configurable);
-assert.equal(inst.enumconf(), "__2__");
+expect(descs.enumconf.enumerable).toBeTruthy();
+expect(descs.enumconf.writable).toBe(false);
+expect(descs.enumconf.configurable).toBeTruthy();
+expect(inst.enumconf()).toBe("__2__");

-assert(descs.enumwrite.enumerable);
-assert(descs.enumwrite.writable);
-assert.equal(descs.enumwrite.configurable, false);
-assert.equal(inst.enumwrite(), "__3__");
+expect(descs.enumwrite.enumerable).toBeTruthy();
+expect(descs.enumwrite.writable).toBeTruthy();
+expect(descs.enumwrite.configurable).toBe(false);
+expect(inst.enumwrite()).toBe("__3__");

-assert(descs.enum.enumerable);
-assert.equal(descs.enum.writable, false);
-assert.equal(descs.enum.configurable, false);
-assert.equal(inst.enum(), "__4__");
+expect(descs.enum.enumerable).toBeTruthy();
+expect(descs.enum.writable).toBe(false);
+expect(descs.enum.configurable).toBe(false);
+expect(inst.enum()).toBe("__4__");

-assert.equal(descs.confwrite.enumerable, false);
-assert(descs.confwrite.writable);
-assert(descs.confwrite.configurable);
-assert.equal(inst.confwrite(), "__5__");
+expect(descs.confwrite.enumerable).toBe(false);
+expect(descs.confwrite.writable).toBeTruthy();
+expect(descs.confwrite.configurable).toBeTruthy();
+expect(inst.confwrite()).toBe("__5__");

-assert.equal(descs.conf.enumerable, false);
-assert.equal(descs.conf.writable, false);
-assert(descs.conf.configurable);
-assert.equal(inst.conf(), "__6__");
+expect(descs.conf.enumerable).toBe(false);
+expect(descs.conf.writable).toBe(false);
+expect(descs.conf.configurable).toBeTruthy();
+expect(inst.conf()).toBe("__6__");

-assert.equal(descs.write.enumerable, false);
-assert(descs.write.writable);
-assert.equal(descs.write.configurable, false);
-assert.equal(inst.write(), "__7__");
+expect(descs.write.enumerable).toBe(false);
+expect(descs.write.writable).toBeTruthy();
+expect(descs.write.configurable).toBe(false);
+expect(inst.write()).toBe("__7__");

-assert.equal(descs._.enumerable, false);
-assert.equal(descs._.writable, false);
-assert.equal(descs._.configurable, false);
-assert.equal(inst._(), "__8__");
+expect(descs._.enumerable).toBe(false);
+expect(descs._.writable).toBe(false);
+expect(descs._.configurable).toBe(false);
+expect(inst._()).toBe("__8__");
--- a/packages/babel-plugin-proposal-decorators/test/fixtures/class-prototype-methods/numeric-props/exec.js
+++ b/packages/babel-plugin-proposal-decorators/test/fixtures/class-prototype-methods/numeric-props/exec.js
@@ -1,7 +1,7 @@
 function dec(target, name, descriptor) {
-  assert(target);
-  assert.equal(name, 4);
-  assert.equal(typeof descriptor, "object");
+  expect(target).toBeTruthy();
+  expect(name).toBe(4);
+  expect(typeof descriptor).toBe("object");
 }

 class Example {
--- a/packages/babel-plugin-proposal-decorators/test/fixtures/class-prototype-methods/return-descriptor/exec.js
+++ b/packages/babel-plugin-proposal-decorators/test/fixtures/class-prototype-methods/return-descriptor/exec.js
@@ -1,7 +1,7 @@
 function dec(target, name, descriptor) {
-  assert(target);
-  assert.equal(typeof name, "string");
-  assert.equal(typeof descriptor, "object");
+  expect(target).toBeTruthy();
+  expect(typeof name).toBe("string");
+  expect(typeof descriptor).toBe("object");

  target.decoratedProps = (target.decoratedProps || []).concat([name]);

@@ -59,8 +59,8 @@ class Example {
 }


-assert(Example.prototype.hasOwnProperty('decoratedProps'));
-assert.deepEqual(Example.prototype.decoratedProps, [
+expect(Example.prototype).toHaveProperty('decoratedProps');
+expect(Example.prototype.decoratedProps).toEqual([
  "enumconfwrite",
  "enumconf",
  "enumwrite",
@@ -76,42 +76,42 @@ const inst = new Example();

 const descs = Object.getOwnPropertyDescriptors(Example.prototype);

-assert(descs.enumconfwrite.enumerable);
-assert(descs.enumconfwrite.writable);
-assert(descs.enumconfwrite.configurable);
-assert.equal(inst.enumconfwrite(), "__1__");
+expect(descs.enumconfwrite.enumerable).toBeTruthy();
+expect(descs.enumconfwrite.writable).toBeTruthy();
+expect(descs.enumconfwrite.configurable).toBeTruthy();
+expect(inst.enumconfwrite()).toBe("__1__");

-assert(descs.enumconf.enumerable);
-assert.equal(descs.enumconf.writable, false);
-assert(descs.enumconf.configurable);
-assert.equal(inst.enumconf(), "__2__");
+expect(descs.enumconf.enumerable).toBeTruthy();
+expect(descs.enumconf.writable).toBe(false);
+expect(descs.enumconf.configurable).toBeTruthy();
+expect(inst.enumconf()).toBe("__2__");

-assert(descs.enumwrite.enumerable);
-assert(descs.enumwrite.writable);
-assert.equal(descs.enumwrite.configurable, false);
-assert.equal(inst.enumwrite(), "__3__");
+expect(descs.enumwrite.enumerable).toBeTruthy();
+expect(descs.enumwrite.writable).toBeTruthy();
+expect(descs.enumwrite.configurable).toBe(false);
+expect(inst.enumwrite()).toBe("__3__");

-assert(descs.enum.enumerable);
-assert.equal(descs.enum.writable, false);
-assert.equal(descs.enum.configurable, false);
-assert.equal(inst.enum(), "__4__");
+expect(descs.enum.enumerable).toBeTruthy();
+expect(descs.enum.writable).toBe(false);
+expect(descs.enum.configurable).toBe(false);
+expect(inst.enum()).toBe("__4__");

-assert.equal(descs.confwrite.enumerable, false);
-assert(descs.confwrite.writable);
-assert(descs.confwrite.configurable);
-assert.equal(inst.confwrite(), "__5__");
+expect(descs.confwrite.enumerable).toBe(false);
+expect(descs.confwrite.writable).toBeTruthy();
+expect(descs.confwrite.configurable).toBeTruthy();
+expect(inst.confwrite()).toBe("__5__");

-assert.equal(descs.conf.enumerable, false);
-assert.equal(descs.conf.writable, false);
-assert(descs.conf.configurable);
-assert.equal(inst.conf(), "__6__");
+expect(descs.conf.enumerable).toBe(false);
+expect(descs.conf.writable).toBe(false);
+expect(descs.conf.configurable).toBeTruthy();
+expect(inst.conf()).toBe("__6__");

-assert.equal(descs.write.enumerable, false);
-assert(descs.write.writable);
-assert.equal(descs.write.configurable, false);
-assert.equal(inst.write(), "__7__");
+expect(descs.write.enumerable).toBe(false);
+expect(descs.write.writable).toBeTruthy();
+expect(descs.write.configurable).toBe(false);
+expect(inst.write()).toBe("__7__");

-assert.equal(descs._.enumerable, false);
-assert.equal(descs._.writable, false);
-assert.equal(descs._.configurable, false);
-assert.equal(inst._(), "__8__");
+expect(descs._.enumerable).toBe(false);
+expect(descs._.writable).toBe(false);
+expect(descs._.configurable).toBe(false);
+expect(inst._()).toBe("__8__");
--- a/packages/babel-plugin-proposal-decorators/test/fixtures/class-prototype-methods/string-props/exec.js
+++ b/packages/babel-plugin-proposal-decorators/test/fixtures/class-prototype-methods/string-props/exec.js
@@ -1,7 +1,7 @@
 function dec(target, name, descriptor) {
-  assert(target);
-  assert.equal(name, "str");
-  assert.equal(typeof descriptor, "object");
+  expect(target).toBeTruthy();
+  expect(name).toBe("str");
+  expect(typeof descriptor).toBe("object");
 }

 class Example {
--- a/packages/babel-plugin-proposal-decorators/test/fixtures/class-prototype-properties/child-classes-properties/exec.js
+++ b/packages/babel-plugin-proposal-decorators/test/fixtures/class-prototype-properties/child-classes-properties/exec.js
@@ -1,7 +1,7 @@
 function dec(target, name, descriptor){
-  assert(target);
-  assert.equal(typeof name, "string");
-  assert.equal(typeof descriptor, "object");
+  expect(target).toBeTruthy();
+  expect(typeof name).toBe("string");
+  expect(typeof descriptor).toBe("object");

  target.decoratedProps = (target.decoratedProps || []).concat([name]);

@@ -23,5 +23,5 @@ class Example extends Base {

 let inst = new Example();

-assert.equal(inst.prop, "__3__");
-assert.equal(inst.prop2, "__4__");
+expect(inst.prop).toBe("__3__");
+expect(inst.prop2).toBe("__4__");
--- a/packages/babel-plugin-proposal-decorators/test/fixtures/class-prototype-properties/mutate-descriptor/exec.js
+++ b/packages/babel-plugin-proposal-decorators/test/fixtures/class-prototype-properties/mutate-descriptor/exec.js
@@ -1,7 +1,7 @@
 function dec(target, name, descriptor) {
-  assert(target);
-  assert.equal(typeof name, "string");
-  assert.equal(typeof descriptor, "object");
+  expect(target).toBeTruthy();
+  expect(typeof name).toBe("string");
+  expect(typeof descriptor).toBe("object");

  target.decoratedProps = (target.decoratedProps || []).concat([name]);

@@ -44,8 +44,8 @@ class Example {

 const inst = new Example();

-assert(Example.prototype.hasOwnProperty("decoratedProps"));
-assert.deepEqual(inst.decoratedProps, [
+expect(Example.prototype).toHaveProperty("decoratedProps");
+expect(inst.decoratedProps).toEqual([
  "enumconfwrite",
  "enumconf",
  "enumwrite",
@@ -58,42 +58,42 @@ assert.deepEqual(inst.decoratedProps, [

 const descs = Object.getOwnPropertyDescriptors(inst);

-assert(descs.enumconfwrite.enumerable);
-assert(descs.enumconfwrite.writable);
-assert(descs.enumconfwrite.configurable);
-assert.equal(inst.enumconfwrite, "__1__");
+expect(descs.enumconfwrite.enumerable).toBeTruthy();
+expect(descs.enumconfwrite.writable).toBeTruthy();
+expect(descs.enumconfwrite.configurable).toBeTruthy();
+expect(inst.enumconfwrite).toBe("__1__");

-assert(descs.enumconf.enumerable);
-assert.equal(descs.enumconf.writable, false);
-assert(descs.enumconf.configurable);
-assert.equal(inst.enumconf, "__2__");
+expect(descs.enumconf.enumerable).toBeTruthy();
+expect(descs.enumconf.writable).toBe(false);
+expect(descs.enumconf.configurable).toBeTruthy();
+expect(inst.enumconf).toBe("__2__");

-assert(descs.enumwrite.enumerable);
-assert(descs.enumwrite.writable);
-assert.equal(descs.enumwrite.configurable, false);
-assert.equal(inst.enumwrite, "__3__");
+expect(descs.enumwrite.enumerable).toBeTruthy();
+expect(descs.enumwrite.writable).toBeTruthy();
+expect(descs.enumwrite.configurable).toBe(false);
+expect(inst.enumwrite).toBe("__3__");

-assert(descs.enum.enumerable);
-assert.equal(descs.enum.writable, false);
-assert.equal(descs.enum.configurable, false);
-assert.equal(inst.enum, "__4__");
+expect(descs.enum.enumerable).toBeTruthy();
+expect(descs.enum.writable).toBe(false);
+expect(descs.enum.configurable).toBe(false);
+expect(inst.enum).toBe("__4__");

-assert.equal(descs.confwrite.enumerable, false);
-assert(descs.confwrite.writable);
-assert(descs.confwrite.configurable);
-assert.equal(inst.confwrite, "__5__");
+expect(descs.confwrite.enumerable).toBe(false);
+expect(descs.confwrite.writable).toBeTruthy();
+expect(descs.confwrite.configurable).toBeTruthy();
+expect(inst.confwrite).toBe("__5__");

-assert.equal(descs.conf.enumerable, false);
-assert.equal(descs.conf.writable, false);
-assert(descs.conf.configurable);
-assert.equal(inst.conf, "__6__");
+expect(descs.conf.enumerable).toBe(false);
+expect(descs.conf.writable).toBe(false);
+expect(descs.conf.configurable).toBeTruthy();
+expect(inst.conf).toBe("__6__");

-assert.equal(descs.write.enumerable, false);
-assert(descs.write.writable);
-assert.equal(descs.write.configurable, false);
-assert.equal(inst.write, "__7__");
+expect(descs.write.enumerable).toBe(false);
+expect(descs.write.writable).toBeTruthy();
+expect(descs.write.configurable).toBe(false);
+expect(inst.write).toBe("__7__");

-assert.equal(descs._.enumerable, false);
-assert.equal(descs._.writable, false);
-assert.equal(descs._.configurable, false);
-assert.equal(inst._, "__8__");
+expect(descs._.enumerable).toBe(false);
+expect(descs._.writable).toBe(false);
+expect(descs._.configurable).toBe(false);
+expect(inst._).toBe("__8__");
--- a/packages/babel-plugin-proposal-decorators/test/fixtures/class-prototype-properties/mutate-initialzer/exec.js
+++ b/packages/babel-plugin-proposal-decorators/test/fixtures/class-prototype-properties/mutate-initialzer/exec.js
@@ -1,7 +1,7 @@
 function dec(target, name, descriptor){
-  assert(target);
-  assert.equal(name, "prop");
-  assert.equal(typeof descriptor, "object");
+  expect(target).toBeTruthy();
+  expect(name).toBe("prop");
+  expect(typeof descriptor).toBe("object");

  let {initializer} = descriptor;
  delete descriptor.initializer;
@@ -24,4 +24,4 @@ class Example {

 let inst = new Example();

-assert.equal(inst.prop, "__3__");
+expect(inst.prop).toBe("__3__");
--- a/packages/babel-plugin-proposal-decorators/test/fixtures/class-prototype-properties/properties-without-initializer/exec.js
+++ b/packages/babel-plugin-proposal-decorators/test/fixtures/class-prototype-properties/properties-without-initializer/exec.js
@@ -7,5 +7,5 @@ class Example {
 }

 let inst = new Example();
-assert(inst.hasOwnProperty("prop"));
-assert.equal(inst.prop, undefined);
+expect(inst).toHaveProperty("prop");
+expect(inst.prop).toBeUndefined();
--- a/packages/babel-plugin-proposal-decorators/test/fixtures/class-prototype-properties/return-descriptor/exec.js
+++ b/packages/babel-plugin-proposal-decorators/test/fixtures/class-prototype-properties/return-descriptor/exec.js
@@ -1,7 +1,7 @@
 function dec(target, name, descriptor) {
-  assert(target);
-  assert.equal(typeof name, "string");
-  assert.equal(typeof descriptor, "object");
+  expect(target).toBeTruthy();
+  expect(typeof name).toBe("string");
+  expect(typeof descriptor).toBe("object");

  target.decoratedProps = (target.decoratedProps || []).concat([name]);

@@ -44,8 +44,8 @@ class Example {

 const inst = new Example();

-assert(Example.prototype.hasOwnProperty("decoratedProps"));
-assert.deepEqual(inst.decoratedProps, [
+expect(Example.prototype).toHaveProperty("decoratedProps");
+expect(inst.decoratedProps).toEqual([
  "enumconfwrite",
  "enumconf",
  "enumwrite",
@@ -58,42 +58,42 @@ assert.deepEqual(inst.decoratedProps, [

 const descs = Object.getOwnPropertyDescriptors(inst);

-assert(descs.enumconfwrite.enumerable);
-assert(descs.enumconfwrite.writable);
-assert(descs.enumconfwrite.configurable);
-assert.equal(inst.enumconfwrite, "__1__");
+expect(descs.enumconfwrite.enumerable).toBeTruthy();
+expect(descs.enumconfwrite.writable).toBeTruthy();
+expect(descs.enumconfwrite.configurable).toBeTruthy();
+expect(inst.enumconfwrite).toBe("__1__");

-assert(descs.enumconf.enumerable);
-assert.equal(descs.enumconf.writable, false);
-assert(descs.enumconf.configurable);
-assert.equal(inst.enumconf, "__2__");
+expect(descs.enumconf.enumerable).toBeTruthy();
+expect(descs.enumconf.writable).toBe(false);
+expect(descs.enumconf.configurable).toBeTruthy();
+expect(inst.enumconf).toBe("__2__");

-assert(descs.enumwrite.enumerable);
-assert(descs.enumwrite.writable);
-assert.equal(descs.enumwrite.configurable, false);
-assert.equal(inst.enumwrite, "__3__");
+expect(descs.enumwrite.enumerable).toBeTruthy();
+expect(descs.enumwrite.writable).toBeTruthy();
+expect(descs.enumwrite.configurable).toBe(false);
+expect(inst.enumwrite).toBe("__3__");

-assert(descs.enum.enumerable);
-assert.equal(descs.enum.writable, false);
-assert.equal(descs.enum.configurable, false);
-assert.equal(inst.enum, "__4__");
+expect(descs.enum.enumerable).toBeTruthy();
+expect(descs.enum.writable).toBe(false);
+expect(descs.enum.configurable).toBe(false);
+expect(inst.enum).toBe("__4__");

-assert.equal(descs.confwrite.enumerable, false);
-assert(descs.confwrite.writable);
-assert(descs.confwrite.configurable);
-assert.equal(inst.confwrite, "__5__");
+expect(descs.confwrite.enumerable).toBe(false);
+expect(descs.confwrite.writable).toBeTruthy();
+expect(descs.confwrite.configurable).toBeTruthy();
+expect(inst.confwrite).toBe("__5__");

-assert.equal(descs.conf.enumerable, false);
-assert.equal(descs.conf.writable, false);
-assert(descs.conf.configurable);
-assert.equal(inst.conf, "__6__");
+expect(descs.conf.enumerable).toBe(false);
+expect(descs.conf.writable).toBe(false);
+expect(descs.conf.configurable).toBeTruthy();
+expect(inst.conf).toBe("__6__");

-assert.equal(descs.write.enumerable, false);
-assert(descs.write.writable);
-assert.equal(descs.write.configurable, false);
-assert.equal(inst.write, "__7__");
+expect(descs.write.enumerable).toBe(false);
+expect(descs.write.writable).toBeTruthy();
+expect(descs.write.configurable).toBe(false);
+expect(inst.write).toBe("__7__");

-assert.equal(descs._.enumerable, false);
-assert.equal(descs._.writable, false);
-assert.equal(descs._.configurable, false);
-assert.equal(inst._, "__8__");
+expect(descs._.enumerable).toBe(false);
+expect(descs._.writable).toBe(false);
+expect(descs._.configurable).toBe(false);
+expect(inst._).toBe("__8__");
--- a/packages/babel-plugin-proposal-decorators/test/fixtures/class-static-methods/mutate-descriptor/exec.js
+++ b/packages/babel-plugin-proposal-decorators/test/fixtures/class-static-methods/mutate-descriptor/exec.js
@@ -1,7 +1,7 @@
 function dec(target, name, descriptor) {
-  assert(target);
-  assert.equal(typeof name, "string");
-  assert.equal(typeof descriptor, "object");
+  expect(target).toBeTruthy();
+  expect(typeof name).toBe("string");
+  expect(typeof descriptor).toBe("object");

  target.decoratedProps = (target.decoratedProps || []).concat([name]);

@@ -58,8 +58,8 @@ class Example {
  }
 }

-assert(Example.hasOwnProperty("decoratedProps"));
-assert.deepEqual(Example.decoratedProps, [
+expect(Example).toHaveProperty("decoratedProps");
+expect(Example.decoratedProps).toEqual([
  "enumconfwrite",
  "enumconf",
  "enumwrite",
@@ -72,42 +72,42 @@ assert.deepEqual(Example.decoratedProps, [

 const descs = Object.getOwnPropertyDescriptors(Example);

-assert(descs.enumconfwrite.enumerable);
-assert(descs.enumconfwrite.writable);
-assert(descs.enumconfwrite.configurable);
-assert.equal(Example.enumconfwrite(), "__1__");
+expect(descs.enumconfwrite.enumerable).toBeTruthy();
+expect(descs.enumconfwrite.writable).toBeTruthy();
+expect(descs.enumconfwrite.configurable).toBeTruthy();
+expect(Example.enumconfwrite()).toBe("__1__");

-assert(descs.enumconf.enumerable);
-assert.equal(descs.enumconf.writable, false);
-assert(descs.enumconf.configurable);
-assert.equal(Example.enumconf(), "__2__");
+expect(descs.enumconf.enumerable).toBeTruthy();
+expect(descs.enumconf.writable).toBe(false);
+expect(descs.enumconf.configurable).toBeTruthy();
+expect(Example.enumconf()).toBe("__2__");

-assert(descs.enumwrite.enumerable);
-assert(descs.enumwrite.writable);
-assert.equal(descs.enumwrite.configurable, false);
-assert.equal(Example.enumwrite(), "__3__");
+expect(descs.enumwrite.enumerable).toBeTruthy();
+expect(descs.enumwrite.writable).toBeTruthy();
+expect(descs.enumwrite.configurable).toBe(false);
+expect(Example.enumwrite()).toBe("__3__");

-assert(descs.enum.enumerable);
-assert.equal(descs.enum.writable, false);
-assert.equal(descs.enum.configurable, false);
-assert.equal(Example.enum(), "__4__");
+expect(descs.enum.enumerable).toBeTruthy();
+expect(descs.enum.writable).toBe(false);
+expect(descs.enum.configurable).toBe(false);
+expect(Example.enum()).toBe("__4__");

-assert.equal(descs.confwrite.enumerable, false);
-assert(descs.confwrite.writable);
-assert(descs.confwrite.configurable);
-assert.equal(Example.confwrite(), "__5__");
+expect(descs.confwrite.enumerable).toBe(false);
+expect(descs.confwrite.writable).toBeTruthy();
+expect(descs.confwrite.configurable).toBeTruthy();
+expect(Example.confwrite()).toBe("__5__");

-assert.equal(descs.conf.enumerable, false);
-assert.equal(descs.conf.writable, false);
-assert(descs.conf.configurable);
-assert.equal(Example.conf(), "__6__");
+expect(descs.conf.enumerable).toBe(false);
+expect(descs.conf.writable).toBe(false);
+expect(descs.conf.configurable).toBeTruthy();
+expect(Example.conf()).toBe("__6__");

-assert.equal(descs.write.enumerable, false);
-assert(descs.write.writable);
-assert.equal(descs.write.configurable, false);
-assert.equal(Example.write(), "__7__");
+expect(descs.write.enumerable).toBe(false);
+expect(descs.write.writable).toBeTruthy();
+expect(descs.write.configurable).toBe(false);
+expect(Example.write()).toBe("__7__");

-assert.equal(descs._.enumerable, false);
-assert.equal(descs._.writable, false);
-assert.equal(descs._.configurable, false);
-assert.equal(Example._(), "__8__");
+expect(descs._.enumerable).toBe(false);
+expect(descs._.writable).toBe(false);
+expect(descs._.configurable).toBe(false);
+expect(Example._()).toBe("__8__");
--- a/packages/babel-plugin-proposal-decorators/test/fixtures/class-static-methods/numeric-props/exec.js
+++ b/packages/babel-plugin-proposal-decorators/test/fixtures/class-static-methods/numeric-props/exec.js
@@ -1,7 +1,7 @@
 function dec(target, name, descriptor){
-  assert(target);
-  assert.equal(name, 4);
-  assert.equal(typeof descriptor, "object");
+  expect(target).toBeTruthy();
+  expect(name).toBe(4);
+  expect(typeof descriptor).toBe("object");
 }

 class Example {
--- a/packages/babel-plugin-proposal-decorators/test/fixtures/class-static-methods/return-descriptor/exec.js
+++ b/packages/babel-plugin-proposal-decorators/test/fixtures/class-static-methods/return-descriptor/exec.js
@@ -1,7 +1,7 @@
 function dec(target, name, descriptor) {
-  assert(target);
-  assert.equal(typeof name, "string");
-  assert.equal(typeof descriptor, "object");
+  expect(target).toBeTruthy();
+  expect(typeof name).toBe("string");
+  expect(typeof descriptor).toBe("object");

  target.decoratedProps = (target.decoratedProps || []).concat([name]);

@@ -59,8 +59,8 @@ class Example {
 }


-assert(Example.hasOwnProperty("decoratedProps"));
-assert.deepEqual(Example.decoratedProps, [
+expect(Example).toHaveProperty("decoratedProps");
+expect(Example.decoratedProps).toEqual([
  "enumconfwrite",
  "enumconf",
  "enumwrite",
@@ -73,42 +73,42 @@ assert.deepEqual(Example.decoratedProps, [

 const descs = Object.getOwnPropertyDescriptors(Example);

-assert(descs.enumconfwrite.enumerable);
-assert(descs.enumconfwrite.writable);
-assert(descs.enumconfwrite.configurable);
-assert.equal(Example.enumconfwrite(), "__1__");
+expect(descs.enumconfwrite.enumerable).toBeTruthy();
+expect(descs.enumconfwrite.writable).toBeTruthy();
+expect(descs.enumconfwrite.configurable).toBeTruthy();
+expect(Example.enumconfwrite()).toBe("__1__");

-assert(descs.enumconf.enumerable);
-assert.equal(descs.enumconf.writable, false);
-assert(descs.enumconf.configurable);
-assert.equal(Example.enumconf(), "__2__");
+expect(descs.enumconf.enumerable).toBeTruthy();
+expect(descs.enumconf.writable).toBe(false);
+expect(descs.enumconf.configurable).toBeTruthy();
+expect(Example.enumconf()).toBe("__2__");

-assert(descs.enumwrite.enumerable);
-assert(descs.enumwrite.writable);
-assert.equal(descs.enumwrite.configurable, false);
-assert.equal(Example.enumwrite(), "__3__");
+expect(descs.enumwrite.enumerable).toBeTruthy();
+expect(descs.enumwrite.writable).toBeTruthy();
+expect(descs.enumwrite.configurable).toBe(false);
+expect(Example.enumwrite()).toBe("__3__");

-assert(descs.enum.enumerable);
-assert.equal(descs.enum.writable, false);
-assert.equal(descs.enum.configurable, false);
-assert.equal(Example.enum(), "__4__");
+expect(descs.enum.enumerable).toBeTruthy();
+expect(descs.enum.writable).toBe(false);
+expect(descs.enum.configurable).toBe(false);
+expect(Example.enum()).toBe("__4__");

-assert.equal(descs.confwrite.enumerable, false);
-assert(descs.confwrite.writable);
-assert(descs.confwrite.configurable);
-assert.equal(Example.confwrite(), "__5__");
+expect(descs.confwrite.enumerable).toBe(false);
+expect(descs.confwrite.writable).toBeTruthy();
+expect(descs.confwrite.configurable);
+expect(Example.confwrite()).toBe("__5__");

-assert.equal(descs.conf.enumerable, false);
-assert.equal(descs.conf.writable, false);
-assert(descs.conf.configurable);
-assert.equal(Example.conf(), "__6__");
+expect(descs.conf.enumerable).toBe(false);
+expect(descs.conf.writable).toBe(false);
+expect(descs.conf.configurable).toBeTruthy();
+expect(Example.conf()).toBe("__6__");

-assert.equal(descs.write.enumerable, false);
-assert(descs.write.writable);
-assert.equal(descs.write.configurable, false);
-assert.equal(Example.write(), "__7__");
+expect(descs.write.enumerable).toBe(false);
+expect(descs.write.writable).toBeTruthy();
+expect(descs.write.configurable).toBe(false);
+expect(Example.write()).toBe("__7__");

-assert.equal(descs._.enumerable, false);
-assert.equal(descs._.writable, false);
-assert.equal(descs._.configurable, false);
-assert.equal(Example._(), "__8__");
+expect(descs._.enumerable).toBe(false);
+expect(descs._.writable).toBe(false);
+expect(descs._.configurable).toBe(false);
+expect(Example._()).toBe("__8__");
--- a/packages/babel-plugin-proposal-decorators/test/fixtures/class-static-methods/string-props/exec.js
+++ b/packages/babel-plugin-proposal-decorators/test/fixtures/class-static-methods/string-props/exec.js
@@ -1,7 +1,7 @@
 function dec(target, name, descriptor) {
-  assert(target);
-  assert.equal(name, "str");
-  assert.equal(typeof descriptor, "object");
+  expect(target).toBeTruthy();
+  expect(name).toBe("str");
+  expect(typeof descriptor).toBe("object");
 }

 class Example {
--- a/packages/babel-plugin-proposal-decorators/test/fixtures/class-static-properties/mutate-descriptor/exec.js
+++ b/packages/babel-plugin-proposal-decorators/test/fixtures/class-static-properties/mutate-descriptor/exec.js
@@ -1,7 +1,7 @@
 function dec(target, name, descriptor) {
-  assert(target);
-  assert.equal(typeof name, "string");
-  assert.equal(typeof descriptor, "object");
+  expect(target).toBeTruthy();
+  expect(typeof name).toBe("string");
+  expect(typeof descriptor).toBe("object");

  target.decoratedProps = (target.decoratedProps || []).concat([name]);

@@ -44,8 +44,8 @@ class Example {

 const inst = new Example();

-assert(Example.hasOwnProperty("decoratedProps"));
-assert.deepEqual(Example.decoratedProps, [
+expect(Example).toHaveProperty("decoratedProps");
+expect(Example.decoratedProps).toEqual([
  "enumconfwrite",
  "enumconf",
  "enumwrite",
@@ -58,42 +58,42 @@ assert.deepEqual(Example.decoratedProps, [

 const descs = Object.getOwnPropertyDescriptors(Example);

-assert(descs.enumconfwrite.enumerable);
-assert(descs.enumconfwrite.writable);
-assert(descs.enumconfwrite.configurable);
-assert.equal(Example.enumconfwrite, "__1__");
+expect(descs.enumconfwrite.enumerable).toBeTruthy();
+expect(descs.enumconfwrite.writable).toBeTruthy();
+expect(descs.enumconfwrite.configurable).toBeTruthy();
+expect(Example.enumconfwrite).toBe("__1__");

-assert(descs.enumconf.enumerable);
-assert.equal(descs.enumconf.writable, false);
-assert(descs.enumconf.configurable);
-assert.equal(Example.enumconf, "__2__");
+expect(descs.enumconf.enumerable).toBeTruthy();
+expect(descs.enumconf.writable).toBe(false);
+expect(descs.enumconf.configurable).toBeTruthy();
+expect(Example.enumconf).toBe("__2__");

-assert(descs.enumwrite.enumerable);
-assert(descs.enumwrite.writable);
-assert.equal(descs.enumwrite.configurable, false);
-assert.equal(Example.enumwrite, "__3__");
+expect(descs.enumwrite.enumerable).toBeTruthy();
+expect(descs.enumwrite.writable).toBeTruthy();
+expect(descs.enumwrite.configurable).toBe(false);
+expect(Example.enumwrite).toBe("__3__");

-assert(descs.enum.enumerable);
-assert.equal(descs.enum.writable, false);
-assert.equal(descs.enum.configurable, false);
-assert.equal(Example.enum, "__4__");
+expect(descs.enum.enumerable).toBeTruthy();
+expect(descs.enum.writable).toBe(false);
+expect(descs.enum.configurable).toBe(false);
+expect(Example.enum).toBe("__4__");

-assert.equal(descs.confwrite.enumerable, false);
-assert(descs.confwrite.writable);
-assert(descs.confwrite.configurable);
-assert.equal(Example.confwrite, "__5__");
+expect(descs.confwrite.enumerable).toBe(false);
+expect(descs.confwrite.writable).toBeTruthy();
+expect(descs.confwrite.configurable).toBeTruthy();
+expect(Example.confwrite).toBe("__5__");

-assert.equal(descs.conf.enumerable, false);
-assert.equal(descs.conf.writable, false);
-assert(descs.conf.configurable);
-assert.equal(Example.conf, "__6__");
+expect(descs.conf.enumerable).toBe(false);
+expect(descs.conf.writable).toBe(false);
+expect(descs.conf.configurable).toBeTruthy();
+expect(Example.conf).toBe("__6__");

-assert.equal(descs.write.enumerable, false);
-assert(descs.write.writable);
-assert.equal(descs.write.configurable, false);
-assert.equal(Example.write, "__7__");
+expect(descs.write.enumerable).toBe(false);
+expect(descs.write.writable).toBeTruthy();
+expect(descs.write.configurable).toBe(false);
+expect(Example.write).toBe("__7__");

-assert.equal(descs._.enumerable, false);
-assert.equal(descs._.writable, false);
-assert.equal(descs._.configurable, false);
-assert.equal(Example._, "__8__");
+expect(descs._.enumerable).toBe(false);
+expect(descs._.writable).toBe(false);
+expect(descs._.configurable).toBe(false);
+expect(Example._).toBe("__8__");
--- a/packages/babel-plugin-proposal-decorators/test/fixtures/class-static-properties/mutate-initialzer/exec.js
+++ b/packages/babel-plugin-proposal-decorators/test/fixtures/class-static-properties/mutate-initialzer/exec.js
@@ -1,7 +1,7 @@
 function dec(target, name, descriptor){
-  assert(target);
-  assert.equal(name, "prop");
-  assert.equal(typeof descriptor, "object");
+  expect(target).toBeTruthy();
+  expect(name).toBe("prop");
+  expect(typeof descriptor).toBe("object");

  let {initializer} = descriptor;
  delete descriptor.initializer;
@@ -22,4 +22,4 @@ class Example {
  static prop = 3;
 }

-assert.equal(Example.prop, "__3__");
+expect(Example.prop).toBe("__3__");
--- a/packages/babel-plugin-proposal-decorators/test/fixtures/class-static-properties/properties-without-initializer/exec.js
+++ b/packages/babel-plugin-proposal-decorators/test/fixtures/class-static-properties/properties-without-initializer/exec.js
@@ -6,5 +6,5 @@ class Example {
  @dec static prop;
 }

-assert(Example.hasOwnProperty("prop"));
-assert.equal(Example.prop, undefined);
+expect(Example).toHaveProperty("prop");
+expect(Example.prop).toBe(undefined);
--- a/packages/babel-plugin-proposal-decorators/test/fixtures/class-static-properties/return-descriptor/exec.js
+++ b/packages/babel-plugin-proposal-decorators/test/fixtures/class-static-properties/return-descriptor/exec.js
@@ -1,7 +1,7 @@
 function dec(target, name, descriptor) {
-  assert(target);
-  assert.equal(typeof name, "string");
-  assert.equal(typeof descriptor, "object");
+  expect(target).toBeTruthy();
+  expect(typeof name).toBe("string");
+  expect(typeof descriptor).toBe("object");

  target.decoratedProps = (target.decoratedProps || []).concat([name]);

@@ -44,8 +44,8 @@ class Example {

 const inst = new Example();

-assert(Example.hasOwnProperty("decoratedProps"));
-assert.deepEqual(Example.decoratedProps, [
+expect(Example).toHaveProperty("decoratedProps");
+expect(Example.decoratedProps).toEqual([
  "enumconfwrite",
  "enumconf",
  "enumwrite",
@@ -58,42 +58,42 @@ assert.deepEqual(Example.decoratedProps, [

 const descs = Object.getOwnPropertyDescriptors(Example);

-assert(descs.enumconfwrite.enumerable);
-assert(descs.enumconfwrite.writable);
-assert(descs.enumconfwrite.configurable);
-assert.equal(Example.enumconfwrite, "__1__");
+expect(descs.enumconfwrite.enumerable).toBeTruthy();
+expect(descs.enumconfwrite.writable).toBeTruthy();
+expect(descs.enumconfwrite.configurable).toBeTruthy();
+expect(Example.enumconfwrite).toBe("__1__");

-assert(descs.enumconf.enumerable);
-assert.equal(descs.enumconf.writable, false);
-assert(descs.enumconf.configurable);
-assert.equal(Example.enumconf, "__2__");
+expect(descs.enumconf.enumerable).toBeTruthy();
+expect(descs.enumconf.writable).toBe(false);
+expect(descs.enumconf.configurable).toBeTruthy();
+expect(Example.enumconf).toBe("__2__");

-assert(descs.enumwrite.enumerable);
-assert(descs.enumwrite.writable);
-assert.equal(descs.enumwrite.configurable, false);
-assert.equal(Example.enumwrite, "__3__");
+expect(descs.enumwrite.enumerable).toBeTruthy();
+expect(descs.enumwrite.writable).toBeTruthy();
+expect(descs.enumwrite.configurable).toBe(false);
+expect(Example.enumwrite).toBe("__3__");

-assert(descs.enum.enumerable);
-assert.equal(descs.enum.writable, false);
-assert.equal(descs.enum.configurable, false);
-assert.equal(Example.enum, "__4__");
+expect(descs.enum.enumerable).toBeTruthy();
+expect(descs.enum.writable).toBe(false);
+expect(descs.enum.configurable).toBe(false);
+expect(Example.enum).toBe("__4__");

-assert.equal(descs.confwrite.enumerable, false);
-assert(descs.confwrite.writable);
-assert(descs.confwrite.configurable);
-assert.equal(Example.confwrite, "__5__");
+expect(descs.confwrite.enumerable).toBe(false);
+expect(descs.confwrite.writable).toBeTruthy();
+expect(descs.confwrite.configurable).toBeTruthy();
+expect(Example.confwrite).toBe("__5__");

-assert.equal(descs.conf.enumerable, false);
-assert.equal(descs.conf.writable, false);
-assert(descs.conf.configurable);
-assert.equal(Example.conf, "__6__");
+expect(descs.conf.enumerable).toBe(false);
+expect(descs.conf.writable).toBe(false);
+expect(descs.conf.configurable);
+expect(Example.conf).toBe("__6__");

-assert.equal(descs.write.enumerable, false);
-assert(descs.write.writable);
-assert.equal(descs.write.configurable, false);
-assert.equal(Example.write, "__7__");
+expect(descs.write.enumerable).toBe(false);
+expect(descs.write.writable).toBeTruthy();
+expect(descs.write.configurable).toBe(false);
+expect(Example.write).toBe("__7__");

-assert.equal(descs._.enumerable, false);
-assert.equal(descs._.writable, false);
-assert.equal(descs._.configurable, false);
-assert.equal(Example._, "__8__");
+expect(descs._.enumerable).toBe(false);
+expect(descs._.writable).toBe(false);
+expect(descs._.configurable).toBe(false);
+expect(Example._).toBe("__8__");
--- a/packages/babel-plugin-proposal-decorators/test/fixtures/object-methods/mutate-descriptor/exec.js
+++ b/packages/babel-plugin-proposal-decorators/test/fixtures/object-methods/mutate-descriptor/exec.js
@@ -1,7 +1,7 @@
 function dec(target, name, descriptor) {
-  assert(target);
-  assert.equal(typeof name, "string");
-  assert.equal(typeof descriptor, "object");
+  expect(target).toBeTruthy();
+  expect(typeof name).toBe("string");
+  expect(typeof descriptor).toBe("object");

  target.decoratedProps = (target.decoratedProps || []).concat([name]);

@@ -58,8 +58,8 @@ const inst = {
  },
 }

-assert(inst.hasOwnProperty('decoratedProps'));
-assert.deepEqual(inst.decoratedProps, [
+expect(inst).toHaveProperty('decoratedProps');
+expect(inst.decoratedProps).toEqual([
  "enumconfwrite",
  "enumconf",
  "enumwrite",
@@ -72,42 +72,42 @@ assert.deepEqual(inst.decoratedProps, [

 const descs = Object.getOwnPropertyDescriptors(inst);

-assert(descs.enumconfwrite.enumerable);
-assert(descs.enumconfwrite.writable);
-assert(descs.enumconfwrite.configurable);
-assert.equal(inst.enumconfwrite(), "__1__");
+expect(descs.enumconfwrite.enumerable).toBeTruthy();
+expect(descs.enumconfwrite.writable).toBeTruthy();
+expect(descs.enumconfwrite.configurable).toBeTruthy();
+expect(inst.enumconfwrite()).toBe("__1__");

-assert(descs.enumconf.enumerable);
-assert.equal(descs.enumconf.writable, false);
-assert(descs.enumconf.configurable);
-assert.equal(inst.enumconf(), "__2__");
+expect(descs.enumconf.enumerable).toBeTruthy();
+expect(descs.enumconf.writable).toBe(false);
+expect(descs.enumconf.configurable).toBeTruthy();
+expect(inst.enumconf()).toBe("__2__");

-assert(descs.enumwrite.enumerable);
-assert(descs.enumwrite.writable);
-assert.equal(descs.enumwrite.configurable, false);
-assert.equal(inst.enumwrite(), "__3__");
+expect(descs.enumwrite.enumerable).toBeTruthy();
+expect(descs.enumwrite.writable).toBeTruthy();
+expect(descs.enumwrite.configurable).toBe(false);
+expect(inst.enumwrite()).toBe("__3__");

-assert(descs.enum.enumerable);
-assert.equal(descs.enum.writable, false);
-assert.equal(descs.enum.configurable, false);
-assert.equal(inst.enum(), "__4__");
+expect(descs.enum.enumerable).toBeTruthy();
+expect(descs.enum.writable).toBe(false);
+expect(descs.enum.configurable).toBe(false);
+expect(inst.enum()).toBe("__4__");

-assert.equal(descs.confwrite.enumerable, false);
-assert(descs.confwrite.writable);
-assert(descs.confwrite.configurable);
-assert.equal(inst.confwrite(), "__5__");
+expect(descs.confwrite.enumerable).toBe(false);
+expect(descs.confwrite.writable).toBeTruthy();
+expect(descs.confwrite.configurable);
+expect(inst.confwrite()).toBe("__5__");

-assert.equal(descs.conf.enumerable, false);
-assert.equal(descs.conf.writable, false);
-assert(descs.conf.configurable);
-assert.equal(inst.conf(), "__6__");
+expect(descs.conf.enumerable).toBe(false);
+expect(descs.conf.writable).toBe(false);
+expect(descs.conf.configurable).toBeTruthy();
+expect(inst.conf()).toBe("__6__");

-assert.equal(descs.write.enumerable, false);
-assert(descs.write.writable);
-assert.equal(descs.write.configurable, false);
-assert.equal(inst.write(), "__7__");
+expect(descs.write.enumerable).toBe(false);
+expect(descs.write.writable).toBeTruthy();
+expect(descs.write.configurable).toBe(false);
+expect(inst.write()).toBe("__7__");

-assert.equal(descs._.enumerable, false);
-assert.equal(descs._.writable, false);
-assert.equal(descs._.configurable, false);
-assert.equal(inst._(), "__8__");
+expect(descs._.enumerable).toBe(false);
+expect(descs._.writable).toBe(false);
+expect(descs._.configurable).toBe(false);
+expect(inst._()).toBe("__8__");
--- a/packages/babel-plugin-proposal-decorators/test/fixtures/object-methods/numeric-props/exec.js
+++ b/packages/babel-plugin-proposal-decorators/test/fixtures/object-methods/numeric-props/exec.js
@@ -1,7 +1,7 @@
 function dec(target, name, descriptor){
-  assert(target);
-  assert.equal(name, 4);
-  assert.equal(typeof descriptor, "object");
+  expect(target).toBeTruthy();
+  expect(name).toBe(4);
+  expect(typeof descriptor).toBe("object");
 }

 const inst = {
--- a/packages/babel-plugin-proposal-decorators/test/fixtures/object-methods/return-descriptor/exec.js
+++ b/packages/babel-plugin-proposal-decorators/test/fixtures/object-methods/return-descriptor/exec.js
@@ -1,7 +1,7 @@
 function dec(target, name, descriptor) {
-  assert(target);
-  assert.equal(typeof name, "string");
-  assert.equal(typeof descriptor, "object");
+  expect(target).toBeTruthy();
+  expect(typeof name).toBe("string");
+  expect(typeof descriptor).toBe("object");

  target.decoratedProps = (target.decoratedProps || []).concat([name]);

@@ -58,8 +58,8 @@ const inst = {
  },
 }

-assert(inst.hasOwnProperty('decoratedProps'));
-assert.deepEqual(inst.decoratedProps, [
+expect(inst).toHaveProperty('decoratedProps');
+expect(inst.decoratedProps).toEqual([
  "enumconfwrite",
  "enumconf",
  "enumwrite",
@@ -72,42 +72,42 @@ assert.deepEqual(inst.decoratedProps, [

 const descs = Object.getOwnPropertyDescriptors(inst);

-assert(descs.enumconfwrite.enumerable);
-assert(descs.enumconfwrite.writable);
-assert(descs.enumconfwrite.configurable);
-assert.equal(inst.enumconfwrite(), "__1__");
+expect(descs.enumconfwrite.enumerable).toBeTruthy();
+expect(descs.enumconfwrite.writable).toBeTruthy();
+expect(descs.enumconfwrite.configurable).toBeTruthy();
+expect(inst.enumconfwrite()).toBe("__1__");

-assert(descs.enumconf.enumerable);
-assert.equal(descs.enumconf.writable, false);
-assert(descs.enumconf.configurable);
-assert.equal(inst.enumconf(), "__2__");
+expect(descs.enumconf.enumerable).toBeTruthy();
+expect(descs.enumconf.writable).toBe(false);
+expect(descs.enumconf.configurable).toBeTruthy();
+expect(inst.enumconf()).toBe("__2__");

-assert(descs.enumwrite.enumerable);
-assert(descs.enumwrite.writable);
-assert.equal(descs.enumwrite.configurable, false);
-assert.equal(inst.enumwrite(), "__3__");
+expect(descs.enumwrite.enumerable).toBeTruthy();
+expect(descs.enumwrite.writable).toBeTruthy();
+expect(descs.enumwrite.configurable).toBe(false);
+expect(inst.enumwrite()).toBe("__3__");

-assert(descs.enum.enumerable);
-assert.equal(descs.enum.writable, false);
-assert.equal(descs.enum.configurable, false);
-assert.equal(inst.enum(), "__4__");
+expect(descs.enum.enumerable).toBeTruthy();
+expect(descs.enum.writable).toBe(false);
+expect(descs.enum.configurable).toBe(false);
+expect(inst.enum()).toBe("__4__");

-assert.equal(descs.confwrite.enumerable, false);
-assert(descs.confwrite.writable);
-assert(descs.confwrite.configurable);
-assert.equal(inst.confwrite(), "__5__");
+expect(descs.confwrite.enumerable).toBe(false);
+expect(descs.confwrite.writable).toBeTruthy();
+expect(descs.confwrite.configurable).toBeTruthy();
+expect(inst.confwrite()).toBe("__5__");

-assert.equal(descs.conf.enumerable, false);
-assert.equal(descs.conf.writable, false);
-assert(descs.conf.configurable);
-assert.equal(inst.conf(), "__6__");
+expect(descs.conf.enumerable).toBe(false);
+expect(descs.conf.writable).toBe(false);
+expect(descs.conf.configurable).toBeTruthy();
+expect(inst.conf()).toBe("__6__");

-assert.equal(descs.write.enumerable, false);
-assert(descs.write.writable);
-assert.equal(descs.write.configurable, false);
-assert.equal(inst.write(), "__7__");
+expect(descs.write.enumerable).toBe(false);
+expect(descs.write.writable).toBeTruthy();
+expect(descs.write.configurable).toBe(false);
+expect(inst.write()).toBe("__7__");

-assert.equal(descs._.enumerable, false);
-assert.equal(descs._.writable, false);
-assert.equal(descs._.configurable, false);
-assert.equal(inst._(), "__8__");
+expect(descs._.enumerable).toBe(false);
+expect(descs._.writable).toBe(false);
+expect(descs._.configurable).toBe(false);
+expect(inst._()).toBe("__8__");
--- a/Show More
+++ b/Show More
Author	SHA1	Message	Date
Henry Zhu	bdfeeb38c6	v7.0.0-beta.43	2018-04-02 12:47:55 -04:00
Henry Zhu	47ada5ab3a	revert prev pr to temp fix osx (#7652 )	2018-04-02 12:40:03 -04:00
John-David Dalton	59ba3959dc	Add options.allowAwaitOutsideFunction. (#7637 )	2018-03-29 10:41:14 -04:00
unconfident	0200e6256a	Allow StringLiteral to be used as ObjectTypeProperty.key (#7639 )	2018-03-28 09:20:46 -05:00
Henry Zhu	9a26c2b07a	Merge pull request #7471 from yakotika/master added support Node's --require and -r flags in babel-node	2018-03-27 14:44:35 -04:00
Henry Zhu	901571d72f	Merge pull request #7579 from devenbansod/migrate-to-jest-expect-2 Migrate a few packages' tests to use Jest Expect (see below)	2018-03-27 14:43:44 -04:00
Deven Bansod	b09c729675	Use expect's instanceOf and toHaveProperty methods	2018-03-27 22:34:25 +05:30
Sven SAULEAU	a36525be45	Merge pull request #7615 from babel/fix-clean-makefile clean makefile a bit	2018-03-27 08:36:16 +02:00
Logan Smyth	a10c91790f	Merge pull request #7588 from loganfsmyth/register-cycle-fixes Have @babel/core lazy-load all dependencies and make @babel/register not explode because of that	2018-03-25 15:24:00 -07:00
Justin Ridgewell	ab7d1231ad	Fix flow errors with Logical Assignment Operators (#7629 ) * Fix flow errors with logical assignment * Fix column numbers	2018-03-25 22:47:48 +01:00
Logan Smyth	a5df709bc3	Lazy-load @babel/core's dependencies to decrease up-front load times.	2018-03-25 14:22:32 -07:00
Logan Smyth	1dbed5f458	Have @babel/register explicitly skip re-entrant plugins/presets.	2018-03-25 14:22:32 -07:00
Logan Smyth	40e38646e4	Include stdout in error messages to aid debugging.	2018-03-25 12:50:35 -07:00
Logan Smyth	9e4dd861ee	Ensure that sourceMapSupport is installed in all branches.	2018-03-25 12:50:35 -07:00
Justin Ridgewell	a7bddc02ba	Add ??= to Logical Assignment Operators (#7623 ) `??=` is being merged into the Logical Assignment Operator proposal, and the overall proposal will wait until nullish coalescing is finalized.	2018-03-25 18:58:51 +01:00
Justin Ridgewell	023f8bd1cb	Move Logical Assignment Ops to Stage 1 (#7625 )	2018-03-25 17:49:21 +01:00
Deven Bansod	c9b99af5a6	Remove assert.* from commented out assertions	2018-03-24 16:22:20 +05:30
Deven Bansod	c8d82d6483	Migrate all remaining fixtures to jest expect	2018-03-24 16:22:20 +05:30
Deven Bansod	db42a5d70f	Migrate babel-preset-es2015 and -next-target tests to use jest expect	2018-03-24 16:22:19 +05:30
Deven Bansod	0856f89882	Migrate -transform-block-scoping and -transform-classes to jest expect	2018-03-24 16:22:18 +05:30
Deven Bansod	921702ef8c	Migrate babel-plugin-proposal-do-expressions tests to jest-expect	2018-03-24 16:22:18 +05:30
Deven Bansod	8b57a3e3b9	Migrate a few packages' tests to use Jest Expect (see below) * Migrate the following packages' tests: * babel-helper-annotate-as-pure * babel-helper-module-imports * babel-helper-transform-fixture-test-runner * babel-highlight * babel-node * babel-plugin-transform-modules-commonjs * babel-preset-env-standalone * babel-preset-env * babel-preset-es2015 * babel-preset-react * babel-standalone * babel-template * babel-traverse * babel-types	2018-03-24 16:22:10 +05:30
Logan Smyth	21309cc8d4	Make these tests re-throw the same error to keep the trace.	2018-03-23 21:26:50 -07:00
Andy	19708e0154	TypeScript: support mapped type modifiers syntax (#7383 )	2018-03-23 14:34:15 -04:00
Mateusz Burzyński	f98dff9189	Allow placeholders in JSXElements when parsing templates (#7583 )	2018-03-23 09:27:51 +01:00
Brian Ng	840ba187a7	Prevent duplicate regex flags (#7617 )	2018-03-22 10:25:26 -05:00
Sven SAULEAU	de00d939f0	fix: clean makefile	2018-03-22 10:29:25 +01:00
Brian Ng	e80488f1d5	Update to beta.42 (#7609 )	2018-03-21 10:39:46 -05:00
Michał Pierzchała	81c1b49f6a	Disable flow on transformClass, fix preset-env errors (#7605 )	2018-03-20 18:42:11 -05:00
Justin Ridgewell	55bf55398a	Logical Assignment: ensure computed key isn't recomputed (#7604 ) * Logical Assignment: ensure computed key isn't recomputed * More tests	2018-03-20 23:06:09 +00:00
Daniel Tschinder	f0d681a238	Remove obsolete max-len eslint rule and reformat some stuff to fit (#7602 )	2018-03-20 08:51:47 -05:00
Logan Smyth	6d6fe844fd	Centralize Babel's own compilation config to make it easier to follow. (#7599 )	2018-03-19 21:49:17 -07:00
Logan Smyth	edb0a70e14	Run prettier to format all JSON.	2018-03-19 18:26:55 -07:00
Brian Ng	669f6b97b2	Tweak es2015-related plugin order in preset-env (#7586 )	2018-03-19 14:19:42 -05:00
Michał Pierzchała	e2c5f25e97	Refactored quirky inheritance in babel-plugin-transform-classes (#7444 ) * chore(plugin-transform-classes): refactor inheritance * path some flow types * remove unused export * get rid of class * temporarily rename to vanilla for diff readability * more setState with minor adjustments * rename 'private' methods * explicit null check * adjust import ordering * Rename createConstructor -> maybeCreateConstructor * Rename vanilla.js -> transformClass.js	2018-03-19 16:37:59 +01:00
Amin Marashi	8eee435cd6	Add RegExp support to include/exclude preset-env options (#7242 ) * Add support for RegExp includes/excludes * Keep the plugin order * Detect invalid modules in regexp * Add more tests for regexp * Cover builtins, and unnormalized in the RegExp tests * Remove babel-plugin- in all positions * Change babel-plugin- prefix to string * Add a test for the same module in include/exclude * Handle partial matches explicitly * Remove extra valid regexp check * Optimise validation of plugins * Optimise selecting the plugins * Fix undefined include/exclude option * Update documentation to reflect the new include matching * Fix typo * Apply reviews Use regexp.test instead of string.match (slower) Define flatten helper Do not normalize babel-plugin anywhere in the string	2018-03-18 15:54:43 +01:00
Daniel Tschinder	da2aea31f5	Fix —require	2018-03-14 13:26:07 +01:00
Abu Shamsutdinov	8317f8ab14	added support Node's --require and -r flags in babel-node	2018-03-07 12:38:57 +03:00