Make babel-standalone an ESModule and enable flow (#9025)

* Make babel-standalone an ESModule and enable flow

* autogenerate plugin list

* Make config an array

Makefile

@@ -11,6 +11,7 @@ SOURCES = packages codemods
 
 build: clean clean-lib
 	./node_modules/.bin/gulp build
+	node ./packages/babel-standalone/scripts/generate.js
 	node ./packages/babel-types/scripts/generateTypeHelpers.js
 	# call build again as the generated files might need to be compiled again.
 	./node_modules/.bin/gulp build

packages/babel-standalone/scripts/generate.js

@@ -0,0 +1,37 @@
+// @flow
+const pluginConfig = require("./pluginConfig.json");
+const path = require("path");
+const chalk = require("chalk");
+const camelCase = require("lodash/camelCase");
+const format = require("../../../scripts/utils/formatCode");
+const writeFile = require("../../../scripts/utils/writeFileAndMkDir");
+
+const outputFile = path.join(__dirname, "../src/generated/plugins.js");
+
+console.log("Generating @babel/standalone files");
+
+let imports = "";
+let list = "";
+let allList = "";
+
+for (const plugin of pluginConfig) {
+  const camelPlugin = camelCase(plugin);
+  imports += `import ${camelPlugin} from "@babel/plugin-${plugin}";`;
+  list += `${camelPlugin},`;
+  allList += `"${plugin}": ${camelPlugin},`;
+}
+
+const fileContent = `// @flow
+/*
+ * This file is auto-generated! Do not modify it directly.
+ * To re-generate run 'make build'
+ */
+${imports}
+
+export {${list}};
+
+export const all = {${allList}};
+`;
+
+writeFile(outputFile, format(fileContent, outputFile));
+console.log(`  ${chalk.green("✔")} Generated plugin list`);

packages/babel-standalone/scripts/pluginConfig.json

@@ -0,0 +1,85 @@
+[
+  "external-helpers",
+  "syntax-async-generators",
+  "syntax-class-properties",
+  "syntax-decorators",
+  "syntax-do-expressions",
+  "syntax-dynamic-import",
+  "syntax-export-default-from",
+  "syntax-export-namespace-from",
+  "syntax-flow",
+  "syntax-function-bind",
+  "syntax-function-sent",
+  "syntax-import-meta",
+  "syntax-jsx",
+  "syntax-object-rest-spread",
+  "syntax-optional-catch-binding",
+  "syntax-pipeline-operator",
+  "syntax-typescript",
+  "proposal-async-generator-functions",
+  "proposal-class-properties",
+  "proposal-decorators",
+  "proposal-do-expressions",
+  "proposal-export-default-from",
+  "proposal-export-namespace-from",
+  "proposal-function-bind",
+  "proposal-function-sent",
+  "proposal-json-strings",
+  "proposal-logical-assignment-operators",
+  "proposal-nullish-coalescing-operator",
+  "proposal-numeric-separator",
+  "proposal-object-rest-spread",
+  "proposal-optional-catch-binding",
+  "proposal-optional-chaining",
+  "proposal-pipeline-operator",
+  "proposal-private-methods",
+  "proposal-throw-expressions",
+  "proposal-unicode-property-regex",
+  "transform-async-to-generator",
+  "transform-arrow-functions",
+  "transform-block-scoped-functions",
+  "transform-block-scoping",
+  "transform-classes",
+  "transform-computed-properties",
+  "transform-destructuring",
+  "transform-dotall-regex",
+  "transform-duplicate-keys",
+  "transform-exponentiation-operator",
+  "transform-flow-comments",
+  "transform-flow-strip-types",
+  "transform-for-of",
+  "transform-function-name",
+  "transform-instanceof",
+  "transform-jscript",
+  "transform-literals",
+  "transform-member-expression-literals",
+  "transform-modules-amd",
+  "transform-modules-commonjs",
+  "transform-modules-systemjs",
+  "transform-modules-umd",
+  "transform-new-target",
+  "transform-object-assign",
+  "transform-object-super",
+  "transform-object-set-prototype-of-to-assign",
+  "transform-parameters",
+  "transform-property-literals",
+  "transform-property-mutators",
+  "transform-proto-to-assign",
+  "transform-react-constant-elements",
+  "transform-react-display-name",
+  "transform-react-inline-elements",
+  "transform-react-jsx",
+  "transform-react-jsx-compat",
+  "transform-react-jsx-self",
+  "transform-react-jsx-source",
+  "transform-regenerator",
+  "transform-runtime",
+  "transform-shorthand-properties",
+  "transform-spread",
+  "transform-sticky-regex",
+  "transform-strict-mode",
+  "transform-template-literals",
+  "transform-typeof-symbol",
+  "transform-typescript",
+  "transform-unicode-regex"
+]

packages/babel-standalone/src/generated/plugins.js

@@ -0,0 +1,256 @@
+// @flow
+import externalHelpers from "@babel/plugin-external-helpers";
+import syntaxAsyncGenerators from "@babel/plugin-syntax-async-generators";
+import syntaxClassProperties from "@babel/plugin-syntax-class-properties";
+import syntaxDecorators from "@babel/plugin-syntax-decorators";
+import syntaxDoExpressions from "@babel/plugin-syntax-do-expressions";
+import syntaxDynamicImport from "@babel/plugin-syntax-dynamic-import";
+import syntaxExportDefaultFrom from "@babel/plugin-syntax-export-default-from";
+import syntaxExportNamespaceFrom from "@babel/plugin-syntax-export-namespace-from";
+import syntaxFlow from "@babel/plugin-syntax-flow";
+import syntaxFunctionBind from "@babel/plugin-syntax-function-bind";
+import syntaxFunctionSent from "@babel/plugin-syntax-function-sent";
+import syntaxImportMeta from "@babel/plugin-syntax-import-meta";
+import syntaxJsx from "@babel/plugin-syntax-jsx";
+import syntaxObjectRestSpread from "@babel/plugin-syntax-object-rest-spread";
+import syntaxOptionalCatchBinding from "@babel/plugin-syntax-optional-catch-binding";
+import syntaxPipelineOperator from "@babel/plugin-syntax-pipeline-operator";
+import syntaxTypescript from "@babel/plugin-syntax-typescript";
+import proposalAsyncGeneratorFunctions from "@babel/plugin-proposal-async-generator-functions";
+import proposalClassProperties from "@babel/plugin-proposal-class-properties";
+import proposalDecorators from "@babel/plugin-proposal-decorators";
+import proposalDoExpressions from "@babel/plugin-proposal-do-expressions";
+import proposalExportDefaultFrom from "@babel/plugin-proposal-export-default-from";
+import proposalExportNamespaceFrom from "@babel/plugin-proposal-export-namespace-from";
+import proposalFunctionBind from "@babel/plugin-proposal-function-bind";
+import proposalFunctionSent from "@babel/plugin-proposal-function-sent";
+import proposalJsonStrings from "@babel/plugin-proposal-json-strings";
+import proposalLogicalAssignmentOperators from "@babel/plugin-proposal-logical-assignment-operators";
+import proposalNullishCoalescingOperator from "@babel/plugin-proposal-nullish-coalescing-operator";
+import proposalNumericSeparator from "@babel/plugin-proposal-numeric-separator";
+import proposalObjectRestSpread from "@babel/plugin-proposal-object-rest-spread";
+import proposalOptionalCatchBinding from "@babel/plugin-proposal-optional-catch-binding";
+import proposalOptionalChaining from "@babel/plugin-proposal-optional-chaining";
+import proposalPipelineOperator from "@babel/plugin-proposal-pipeline-operator";
+import proposalPrivateMethods from "@babel/plugin-proposal-private-methods";
+import proposalThrowExpressions from "@babel/plugin-proposal-throw-expressions";
+import proposalUnicodePropertyRegex from "@babel/plugin-proposal-unicode-property-regex";
+import transformAsyncToGenerator from "@babel/plugin-transform-async-to-generator";
+import transformArrowFunctions from "@babel/plugin-transform-arrow-functions";
+import transformBlockScopedFunctions from "@babel/plugin-transform-block-scoped-functions";
+import transformBlockScoping from "@babel/plugin-transform-block-scoping";
+import transformClasses from "@babel/plugin-transform-classes";
+import transformComputedProperties from "@babel/plugin-transform-computed-properties";
+import transformDestructuring from "@babel/plugin-transform-destructuring";
+import transformDotallRegex from "@babel/plugin-transform-dotall-regex";
+import transformDuplicateKeys from "@babel/plugin-transform-duplicate-keys";
+import transformExponentiationOperator from "@babel/plugin-transform-exponentiation-operator";
+import transformFlowComments from "@babel/plugin-transform-flow-comments";
+import transformFlowStripTypes from "@babel/plugin-transform-flow-strip-types";
+import transformForOf from "@babel/plugin-transform-for-of";
+import transformFunctionName from "@babel/plugin-transform-function-name";
+import transformInstanceof from "@babel/plugin-transform-instanceof";
+import transformJscript from "@babel/plugin-transform-jscript";
+import transformLiterals from "@babel/plugin-transform-literals";
+import transformMemberExpressionLiterals from "@babel/plugin-transform-member-expression-literals";
+import transformModulesAmd from "@babel/plugin-transform-modules-amd";
+import transformModulesCommonjs from "@babel/plugin-transform-modules-commonjs";
+import transformModulesSystemjs from "@babel/plugin-transform-modules-systemjs";
+import transformModulesUmd from "@babel/plugin-transform-modules-umd";
+import transformNewTarget from "@babel/plugin-transform-new-target";
+import transformObjectAssign from "@babel/plugin-transform-object-assign";
+import transformObjectSuper from "@babel/plugin-transform-object-super";
+import transformObjectSetPrototypeOfToAssign from "@babel/plugin-transform-object-set-prototype-of-to-assign";
+import transformParameters from "@babel/plugin-transform-parameters";
+import transformPropertyLiterals from "@babel/plugin-transform-property-literals";
+import transformPropertyMutators from "@babel/plugin-transform-property-mutators";
+import transformProtoToAssign from "@babel/plugin-transform-proto-to-assign";
+import transformReactConstantElements from "@babel/plugin-transform-react-constant-elements";
+import transformReactDisplayName from "@babel/plugin-transform-react-display-name";
+import transformReactInlineElements from "@babel/plugin-transform-react-inline-elements";
+import transformReactJsx from "@babel/plugin-transform-react-jsx";
+import transformReactJsxCompat from "@babel/plugin-transform-react-jsx-compat";
+import transformReactJsxSelf from "@babel/plugin-transform-react-jsx-self";
+import transformReactJsxSource from "@babel/plugin-transform-react-jsx-source";
+import transformRegenerator from "@babel/plugin-transform-regenerator";
+import transformRuntime from "@babel/plugin-transform-runtime";
+import transformShorthandProperties from "@babel/plugin-transform-shorthand-properties";
+import transformSpread from "@babel/plugin-transform-spread";
+import transformStickyRegex from "@babel/plugin-transform-sticky-regex";
+import transformStrictMode from "@babel/plugin-transform-strict-mode";
+import transformTemplateLiterals from "@babel/plugin-transform-template-literals";
+import transformTypeofSymbol from "@babel/plugin-transform-typeof-symbol";
+import transformTypescript from "@babel/plugin-transform-typescript";
+import transformUnicodeRegex from "@babel/plugin-transform-unicode-regex";
+
+export {
+  externalHelpers,
+  syntaxAsyncGenerators,
+  syntaxClassProperties,
+  syntaxDecorators,
+  syntaxDoExpressions,
+  syntaxDynamicImport,
+  syntaxExportDefaultFrom,
+  syntaxExportNamespaceFrom,
+  syntaxFlow,
+  syntaxFunctionBind,
+  syntaxFunctionSent,
+  syntaxImportMeta,
+  syntaxJsx,
+  syntaxObjectRestSpread,
+  syntaxOptionalCatchBinding,
+  syntaxPipelineOperator,
+  syntaxTypescript,
+  proposalAsyncGeneratorFunctions,
+  proposalClassProperties,
+  proposalDecorators,
+  proposalDoExpressions,
+  proposalExportDefaultFrom,
+  proposalExportNamespaceFrom,
+  proposalFunctionBind,
+  proposalFunctionSent,
+  proposalJsonStrings,
+  proposalLogicalAssignmentOperators,
+  proposalNullishCoalescingOperator,
+  proposalNumericSeparator,
+  proposalObjectRestSpread,
+  proposalOptionalCatchBinding,
+  proposalOptionalChaining,
+  proposalPipelineOperator,
+  proposalPrivateMethods,
+  proposalThrowExpressions,
+  proposalUnicodePropertyRegex,
+  transformAsyncToGenerator,
+  transformArrowFunctions,
+  transformBlockScopedFunctions,
+  transformBlockScoping,
+  transformClasses,
+  transformComputedProperties,
+  transformDestructuring,
+  transformDotallRegex,
+  transformDuplicateKeys,
+  transformExponentiationOperator,
+  transformFlowComments,
+  transformFlowStripTypes,
+  transformForOf,
+  transformFunctionName,
+  transformInstanceof,
+  transformJscript,
+  transformLiterals,
+  transformMemberExpressionLiterals,
+  transformModulesAmd,
+  transformModulesCommonjs,
+  transformModulesSystemjs,
+  transformModulesUmd,
+  transformNewTarget,
+  transformObjectAssign,
+  transformObjectSuper,
+  transformObjectSetPrototypeOfToAssign,
+  transformParameters,
+  transformPropertyLiterals,
+  transformPropertyMutators,
+  transformProtoToAssign,
+  transformReactConstantElements,
+  transformReactDisplayName,
+  transformReactInlineElements,
+  transformReactJsx,
+  transformReactJsxCompat,
+  transformReactJsxSelf,
+  transformReactJsxSource,
+  transformRegenerator,
+  transformRuntime,
+  transformShorthandProperties,
+  transformSpread,
+  transformStickyRegex,
+  transformStrictMode,
+  transformTemplateLiterals,
+  transformTypeofSymbol,
+  transformTypescript,
+  transformUnicodeRegex,
+};
+
+export const all = {
+  "external-helpers": externalHelpers,
+  "syntax-async-generators": syntaxAsyncGenerators,
+  "syntax-class-properties": syntaxClassProperties,
+  "syntax-decorators": syntaxDecorators,
+  "syntax-do-expressions": syntaxDoExpressions,
+  "syntax-dynamic-import": syntaxDynamicImport,
+  "syntax-export-default-from": syntaxExportDefaultFrom,
+  "syntax-export-namespace-from": syntaxExportNamespaceFrom,
+  "syntax-flow": syntaxFlow,
+  "syntax-function-bind": syntaxFunctionBind,
+  "syntax-function-sent": syntaxFunctionSent,
+  "syntax-import-meta": syntaxImportMeta,
+  "syntax-jsx": syntaxJsx,
+  "syntax-object-rest-spread": syntaxObjectRestSpread,
+  "syntax-optional-catch-binding": syntaxOptionalCatchBinding,
+  "syntax-pipeline-operator": syntaxPipelineOperator,
+  "syntax-typescript": syntaxTypescript,
+  "proposal-async-generator-functions": proposalAsyncGeneratorFunctions,
+  "proposal-class-properties": proposalClassProperties,
+  "proposal-decorators": proposalDecorators,
+  "proposal-do-expressions": proposalDoExpressions,
+  "proposal-export-default-from": proposalExportDefaultFrom,
+  "proposal-export-namespace-from": proposalExportNamespaceFrom,
+  "proposal-function-bind": proposalFunctionBind,
+  "proposal-function-sent": proposalFunctionSent,
+  "proposal-json-strings": proposalJsonStrings,
+  "proposal-logical-assignment-operators": proposalLogicalAssignmentOperators,
+  "proposal-nullish-coalescing-operator": proposalNullishCoalescingOperator,
+  "proposal-numeric-separator": proposalNumericSeparator,
+  "proposal-object-rest-spread": proposalObjectRestSpread,
+  "proposal-optional-catch-binding": proposalOptionalCatchBinding,
+  "proposal-optional-chaining": proposalOptionalChaining,
+  "proposal-pipeline-operator": proposalPipelineOperator,
+  "proposal-private-methods": proposalPrivateMethods,
+  "proposal-throw-expressions": proposalThrowExpressions,
+  "proposal-unicode-property-regex": proposalUnicodePropertyRegex,
+  "transform-async-to-generator": transformAsyncToGenerator,
+  "transform-arrow-functions": transformArrowFunctions,
+  "transform-block-scoped-functions": transformBlockScopedFunctions,
+  "transform-block-scoping": transformBlockScoping,
+  "transform-classes": transformClasses,
+  "transform-computed-properties": transformComputedProperties,
+  "transform-destructuring": transformDestructuring,
+  "transform-dotall-regex": transformDotallRegex,
+  "transform-duplicate-keys": transformDuplicateKeys,
+  "transform-exponentiation-operator": transformExponentiationOperator,
+  "transform-flow-comments": transformFlowComments,
+  "transform-flow-strip-types": transformFlowStripTypes,
+  "transform-for-of": transformForOf,
+  "transform-function-name": transformFunctionName,
+  "transform-instanceof": transformInstanceof,
+  "transform-jscript": transformJscript,
+  "transform-literals": transformLiterals,
+  "transform-member-expression-literals": transformMemberExpressionLiterals,
+  "transform-modules-amd": transformModulesAmd,
+  "transform-modules-commonjs": transformModulesCommonjs,
+  "transform-modules-systemjs": transformModulesSystemjs,
+  "transform-modules-umd": transformModulesUmd,
+  "transform-new-target": transformNewTarget,
+  "transform-object-assign": transformObjectAssign,
+  "transform-object-super": transformObjectSuper,
+  "transform-object-set-prototype-of-to-assign": transformObjectSetPrototypeOfToAssign,
+  "transform-parameters": transformParameters,
+  "transform-property-literals": transformPropertyLiterals,
+  "transform-property-mutators": transformPropertyMutators,
+  "transform-proto-to-assign": transformProtoToAssign,
+  "transform-react-constant-elements": transformReactConstantElements,
+  "transform-react-display-name": transformReactDisplayName,
+  "transform-react-inline-elements": transformReactInlineElements,
+  "transform-react-jsx": transformReactJsx,
+  "transform-react-jsx-compat": transformReactJsxCompat,
+  "transform-react-jsx-self": transformReactJsxSelf,
+  "transform-react-jsx-source": transformReactJsxSource,
+  "transform-regenerator": transformRegenerator,
+  "transform-runtime": transformRuntime,
+  "transform-shorthand-properties": transformShorthandProperties,
+  "transform-spread": transformSpread,
+  "transform-sticky-regex": transformStickyRegex,
+  "transform-strict-mode": transformStrictMode,
+  "transform-template-literals": transformTemplateLiterals,
+  "transform-typeof-symbol": transformTypeofSymbol,
+  "transform-typescript": transformTypescript,
+  "transform-unicode-regex": transformUnicodeRegex,
+};

packages/babel-standalone/src/index.js

@@ -4,12 +4,26 @@
  * plugins, instead explicitly registering all the available plugins and
  * presets, and requiring custom ones to be registered through `registerPlugin`
  * and `registerPreset` respectively.
+ * @flow
  */
 
 /* global VERSION */
 /* eslint-disable max-len */
 
-import * as Babel from "@babel/core";
+import {
+  transformFromAst as babelTransformFromAst,
+  transform as babelTransform,
+  buildExternalHelpers as babelBuildExternalHelpers,
+} from "@babel/core";
+import { all } from "./generated/plugins";
+import preset2015 from "./preset-es2015";
+import presetStage0 from "./preset-stage-0";
+import presetStage1 from "./preset-stage-1";
+import presetStage2 from "./preset-stage-2";
+import presetStage3 from "./preset-stage-3";
+import presetReact from "@babel/preset-react";
+import presetFlow from "@babel/preset-flow";
+import presetTypescript from "@babel/preset-typescript";
 
 import { runScripts } from "./transformScriptTags";
 
@@ -84,20 +98,20 @@ function processOptions(options) {
   };
 }
 
-export function transform(code, options) {
+export function transform(code: string, options: Object) {
-  return Babel.transform(code, processOptions(options));
+  return babelTransform(code, processOptions(options));
 }
 
-export function transformFromAst(ast, code, options) {
+export function transformFromAst(ast: Object, code: string, options: Object) {
-  return Babel.transformFromAst(ast, code, processOptions(options));
+  return babelTransformFromAst(ast, code, processOptions(options));
 }
 export const availablePlugins = {};
 export const availablePresets = {};
-export const buildExternalHelpers = Babel.buildExternalHelpers;
+export const buildExternalHelpers = babelBuildExternalHelpers;
 /**
  * Registers a named plugin for use with Babel.
  */
-export function registerPlugin(name, plugin) {
+export function registerPlugin(name: string, plugin: Object | Function): void {
   if (availablePlugins.hasOwnProperty(name)) {
     console.warn(
       `A plugin named "${name}" is already registered, it will be overridden`,
@@ -109,7 +123,9 @@ export function registerPlugin(name, plugin) {
  * Registers multiple plugins for use with Babel. `newPlugins` should be an object where the key
  * is the name of the plugin, and the value is the plugin itself.
  */
-export function registerPlugins(newPlugins) {
+export function registerPlugins(newPlugins: {
+  [string]: Object | Function,
+}): void {
   Object.keys(newPlugins).forEach(name =>
     registerPlugin(name, newPlugins[name]),
   );
@@ -118,7 +134,7 @@ export function registerPlugins(newPlugins) {
 /**
  * Registers a named preset for use with Babel.
  */
-export function registerPreset(name, preset) {
+export function registerPreset(name: string, preset: Object | Function): void {
   if (availablePresets.hasOwnProperty(name)) {
     console.warn(
       `A preset named "${name}" is already registered, it will be overridden`,
@@ -130,7 +146,9 @@ export function registerPreset(name, preset) {
  * Registers multiple presets for use with Babel. `newPresets` should be an object where the key
  * is the name of the preset, and the value is the preset itself.
  */
-export function registerPresets(newPresets) {
+export function registerPresets(newPresets: {
+  [string]: Object | Function,
+}): void {
   Object.keys(newPresets).forEach(name =>
     registerPreset(name, newPresets[name]),
   );
@@ -139,90 +157,13 @@ export function registerPresets(newPresets) {
 // All the plugins we should bundle
 // Want to get rid of this long whitelist of plugins?
 // Wait! Please read https://github.com/babel/babel/pull/6177 first.
-registerPlugins({
+registerPlugins(all);
-  "external-helpers": require("@babel/plugin-external-helpers"),
-  "syntax-async-generators": require("@babel/plugin-syntax-async-generators"),
-  "syntax-class-properties": require("@babel/plugin-syntax-class-properties"),
-  "syntax-decorators": require("@babel/plugin-syntax-decorators"),
-  "syntax-do-expressions": require("@babel/plugin-syntax-do-expressions"),
-  "syntax-dynamic-import": require("@babel/plugin-syntax-dynamic-import"),
-  "syntax-export-default-from": require("@babel/plugin-syntax-export-default-from"),
-  "syntax-export-namespace-from": require("@babel/plugin-syntax-export-namespace-from"),
-  "syntax-flow": require("@babel/plugin-syntax-flow"),
-  "syntax-function-bind": require("@babel/plugin-syntax-function-bind"),
-  "syntax-function-sent": require("@babel/plugin-syntax-function-sent"),
-  "syntax-import-meta": require("@babel/plugin-syntax-import-meta"),
-  "syntax-jsx": require("@babel/plugin-syntax-jsx"),
-  "syntax-object-rest-spread": require("@babel/plugin-syntax-object-rest-spread"),
-  "syntax-optional-catch-binding": require("@babel/plugin-syntax-optional-catch-binding"),
-  "syntax-pipeline-operator": require("@babel/plugin-syntax-pipeline-operator"),
-  "syntax-typescript": require("@babel/plugin-syntax-typescript"),
-  "transform-async-to-generator": require("@babel/plugin-transform-async-to-generator"),
-  "proposal-async-generator-functions": require("@babel/plugin-proposal-async-generator-functions"),
-  "proposal-class-properties": require("@babel/plugin-proposal-class-properties"),
-  "proposal-decorators": require("@babel/plugin-proposal-decorators"),
-  "proposal-do-expressions": require("@babel/plugin-proposal-do-expressions"),
-  "proposal-export-default-from": require("@babel/plugin-proposal-export-default-from"),
-  "proposal-export-namespace-from": require("@babel/plugin-proposal-export-namespace-from"),
-  "proposal-pipeline-operator": require("@babel/plugin-proposal-pipeline-operator"),
-  "proposal-private-methods": require("@babel/plugin-proposal-private-methods"),
-  "transform-arrow-functions": require("@babel/plugin-transform-arrow-functions"),
-  "transform-block-scoped-functions": require("@babel/plugin-transform-block-scoped-functions"),
-  "transform-block-scoping": require("@babel/plugin-transform-block-scoping"),
-  "transform-classes": require("@babel/plugin-transform-classes"),
-  "transform-computed-properties": require("@babel/plugin-transform-computed-properties"),
-  "transform-destructuring": require("@babel/plugin-transform-destructuring"),
-  "transform-dotall-regex": require("@babel/plugin-transform-dotall-regex"),
-  "transform-duplicate-keys": require("@babel/plugin-transform-duplicate-keys"),
-  "transform-for-of": require("@babel/plugin-transform-for-of"),
-  "transform-function-name": require("@babel/plugin-transform-function-name"),
-  "transform-instanceof": require("@babel/plugin-transform-instanceof"),
-  "transform-literals": require("@babel/plugin-transform-literals"),
-  "transform-modules-amd": require("@babel/plugin-transform-modules-amd"),
-  "transform-modules-commonjs": require("@babel/plugin-transform-modules-commonjs"),
-  "transform-modules-systemjs": require("@babel/plugin-transform-modules-systemjs"),
-  "transform-modules-umd": require("@babel/plugin-transform-modules-umd"),
-  "transform-object-super": require("@babel/plugin-transform-object-super"),
-  "transform-parameters": require("@babel/plugin-transform-parameters"),
-  "transform-shorthand-properties": require("@babel/plugin-transform-shorthand-properties"),
-  "transform-spread": require("@babel/plugin-transform-spread"),
-  "transform-sticky-regex": require("@babel/plugin-transform-sticky-regex"),
-  "transform-template-literals": require("@babel/plugin-transform-template-literals"),
-  "transform-typeof-symbol": require("@babel/plugin-transform-typeof-symbol"),
-  "transform-typescript": require("@babel/plugin-transform-typescript"),
-  "transform-unicode-regex": require("@babel/plugin-transform-unicode-regex"),
-  "transform-member-expression-literals": require("@babel/plugin-transform-member-expression-literals"),
-  "transform-property-literals": require("@babel/plugin-transform-property-literals"),
-  "transform-property-mutators": require("@babel/plugin-transform-property-mutators"),
-  "transform-exponentiation-operator": require("@babel/plugin-transform-exponentiation-operator"),
-  "transform-flow-comments": require("@babel/plugin-transform-flow-comments"),
-  "transform-flow-strip-types": require("@babel/plugin-transform-flow-strip-types"),
-  "proposal-function-bind": require("@babel/plugin-proposal-function-bind"),
-  "transform-jscript": require("@babel/plugin-transform-jscript"),
-  "transform-new-target": require("@babel/plugin-transform-new-target"),
-  "transform-object-assign": require("@babel/plugin-transform-object-assign"),
-  "proposal-object-rest-spread": require("@babel/plugin-proposal-object-rest-spread"),
-  "transform-object-set-prototype-of-to-assign": require("@babel/plugin-transform-object-set-prototype-of-to-assign"),
-  "proposal-optional-catch-binding": require("@babel/plugin-proposal-optional-catch-binding"),
-  "transform-proto-to-assign": require("@babel/plugin-transform-proto-to-assign"),
-  "transform-react-constant-elements": require("@babel/plugin-transform-react-constant-elements"),
-  "transform-react-display-name": require("@babel/plugin-transform-react-display-name"),
-  "transform-react-inline-elements": require("@babel/plugin-transform-react-inline-elements"),
-  "transform-react-jsx": require("@babel/plugin-transform-react-jsx"),
-  "transform-react-jsx-compat": require("@babel/plugin-transform-react-jsx-compat"),
-  "transform-react-jsx-self": require("@babel/plugin-transform-react-jsx-self"),
-  "transform-react-jsx-source": require("@babel/plugin-transform-react-jsx-source"),
-  "transform-regenerator": require("@babel/plugin-transform-regenerator"),
-  "transform-runtime": require("@babel/plugin-transform-runtime"),
-  "transform-strict-mode": require("@babel/plugin-transform-strict-mode"),
-  "proposal-unicode-property-regex": require("@babel/plugin-proposal-unicode-property-regex"),
-});
 
 // All the presets we should bundle
 // Want to get rid of this whitelist of presets?
 // Wait! Please read https://github.com/babel/babel/pull/6177 first.
 registerPresets({
-  es2015: require("./preset-es2015"),
+  es2015: preset2015,
   es2016: () => {
     return {
       plugins: [availablePlugins["transform-exponentiation-operator"]],
@@ -233,22 +174,23 @@ registerPresets({
       plugins: [availablePlugins["transform-async-to-generator"]],
     };
   },
-  react: require("@babel/preset-react"),
+  react: presetReact,
-  "stage-0": require("./preset-stage-0"),
+  "stage-0": presetStage0,
-  "stage-1": require("./preset-stage-1"),
+  "stage-1": presetStage1,
-  "stage-2": require("./preset-stage-2"),
+  "stage-2": presetStage2,
-  "stage-3": require("./preset-stage-3"),
+  "stage-3": presetStage3,
   "es2015-loose": {
-    presets: [[require("./preset-es2015"), { loose: true }]],
+    presets: [[preset2015, { loose: true }]],
   },
   // ES2015 preset with es2015-modules-commonjs removed
   "es2015-no-commonjs": {
-    presets: [[require("./preset-es2015"), { modules: false }]],
+    presets: [[preset2015, { modules: false }]],
   },
-  typescript: require("@babel/preset-typescript"),
+  typescript: presetTypescript,
-  flow: require("@babel/preset-flow"),
+  flow: presetFlow,
 });
 
+// $FlowIgnore
 export const version = VERSION;
 
 function onDOMContentLoaded() {
@@ -265,7 +207,7 @@ if (typeof window !== "undefined" && window && window.addEventListener) {
  * Transform <script> tags with "text/babel" type.
  * @param {Array} scriptTags specify script tags to transform, transform all in the <head> if not given
  */
-export function transformScriptTags(scriptTags) {
+export function transformScriptTags(scriptTags?: Array<any>) {
   runScripts(transform, scriptTags);
 }
 

packages/babel-standalone/src/preset-es2015.js

@@ -1,29 +1,7 @@
-import transformES2015TemplateLiterals from "@babel/plugin-transform-template-literals";
+// @flow
-import transformES2015Literals from "@babel/plugin-transform-literals";
+import * as babelPlugins from "./generated/plugins";
-import transformES2015FunctionName from "@babel/plugin-transform-function-name";
-import transformES2015ArrowFunctions from "@babel/plugin-transform-arrow-functions";
-import transformES2015BlockScopedFunctions from "@babel/plugin-transform-block-scoped-functions";
-import transformES2015Classes from "@babel/plugin-transform-classes";
-import transformES2015ObjectSuper from "@babel/plugin-transform-object-super";
-import transformES2015ShorthandProperties from "@babel/plugin-transform-shorthand-properties";
-import transformES2015DuplicateKeys from "@babel/plugin-transform-duplicate-keys";
-import transformES2015ComputedProperties from "@babel/plugin-transform-computed-properties";
-import transformES2015ForOf from "@babel/plugin-transform-for-of";
-import transformES2015StickyRegex from "@babel/plugin-transform-sticky-regex";
-import transformES2015UnicodeRegex from "@babel/plugin-transform-unicode-regex";
-import transformES2015Spread from "@babel/plugin-transform-spread";
-import transformES2015Parameters from "@babel/plugin-transform-parameters";
-import transformES2015Destructuring from "@babel/plugin-transform-destructuring";
-import transformES2015BlockScoping from "@babel/plugin-transform-block-scoping";
-import transformES2015TypeofSymbol from "@babel/plugin-transform-typeof-symbol";
-import transformES2015ModulesCommonJS from "@babel/plugin-transform-modules-commonjs";
-import transformES2015ModulesSystemJS from "@babel/plugin-transform-modules-systemjs";
-import transformES2015ModulesAMD from "@babel/plugin-transform-modules-amd";
-import transformES2015ModulesUMD from "@babel/plugin-transform-modules-umd";
-import transformES2015Instanceof from "@babel/plugin-transform-instanceof";
-import transformRegenerator from "@babel/plugin-transform-regenerator";
 
-export default (_, opts) => {
+export default (_: any, opts: Object): Object => {
   let loose = false;
   let modules = "commonjs";
   let spec = false;
@@ -39,33 +17,39 @@ export default (_, opts) => {
 
   return {
     plugins: [
-      [transformES2015TemplateLiterals, { loose, spec }],
+      [babelPlugins.transformTemplateLiterals, { loose, spec }],
-      transformES2015Literals,
+      babelPlugins.transformLiterals,
-      transformES2015FunctionName,
+      babelPlugins.transformFunctionName,
-      [transformES2015ArrowFunctions, { spec }],
+      [babelPlugins.transformArrowFunctions, { spec }],
-      transformES2015BlockScopedFunctions,
+      babelPlugins.transformBlockScopedFunctions,
-      [transformES2015Classes, optsLoose],
+      [babelPlugins.transformClasses, optsLoose],
-      transformES2015ObjectSuper,
+      babelPlugins.transformObjectSuper,
-      transformES2015ShorthandProperties,
+      babelPlugins.transformShorthandProperties,
-      transformES2015DuplicateKeys,
+      babelPlugins.transformDuplicateKeys,
-      [transformES2015ComputedProperties, optsLoose],
+      [babelPlugins.transformComputedProperties, optsLoose],
-      [transformES2015ForOf, optsLoose],
+      [babelPlugins.transformForOf, optsLoose],
-      transformES2015StickyRegex,
+      babelPlugins.transformStickyRegex,
-      transformES2015UnicodeRegex,
+      babelPlugins.transformUnicodeRegex,
-      [transformES2015Spread, optsLoose],
+      [babelPlugins.transformSpread, optsLoose],
-      [transformES2015Parameters, optsLoose],
+      [babelPlugins.transformParameters, optsLoose],
-      [transformES2015Destructuring, optsLoose],
+      [babelPlugins.transformDestructuring, optsLoose],
-      transformES2015BlockScoping,
+      babelPlugins.transformBlockScoping,
-      transformES2015TypeofSymbol,
+      babelPlugins.transformTypeofSymbol,
-      transformES2015Instanceof,
+      babelPlugins.transformInstanceof,
       (modules === "commonjs" || modules === "cjs") && [
-        transformES2015ModulesCommonJS,
+        babelPlugins.transformModulesCommonjs,
         optsLoose,
       ],
-      modules === "systemjs" && [transformES2015ModulesSystemJS, optsLoose],
+      modules === "systemjs" && [
-      modules === "amd" && [transformES2015ModulesAMD, optsLoose],
+        babelPlugins.transformModulesSystemjs,
-      modules === "umd" && [transformES2015ModulesUMD, optsLoose],
+        optsLoose,
-      [transformRegenerator, { async: false, asyncGenerators: false }],
+      ],
+      modules === "amd" && [babelPlugins.transformModulesAmd, optsLoose],
+      modules === "umd" && [babelPlugins.transformModulesUmd, optsLoose],
+      [
+        babelPlugins.transformRegenerator,
+        { async: false, asyncGenerators: false },
+      ],
     ].filter(Boolean), // filter out falsy values
   };
 };

packages/babel-standalone/src/preset-stage-0.js

@@ -1,8 +1,8 @@
+// @flow
 import presetStage1 from "./preset-stage-1";
+import { proposalFunctionBind } from "./generated/plugins";
 
-import transformFunctionBind from "@babel/plugin-proposal-function-bind";
+export default (_: any, opts: Object = {}) => {
-
-export default (_, opts = {}) => {
   const {
     loose = false,
     useBuiltIns = false,
@@ -24,6 +24,6 @@ export default (_, opts = {}) => {
         },
       ],
     ],
-    plugins: [transformFunctionBind],
+    plugins: [proposalFunctionBind],
   };
 };

packages/babel-standalone/src/preset-stage-1.js

@@ -1,13 +1,8 @@
+// @flow
 import presetStage2 from "./preset-stage-2";
+import * as babelPlugins from "./generated/plugins";
 
-import transformExportDefaultFrom from "@babel/plugin-proposal-export-default-from";
+export default (_: any, opts: Object = {}) => {
-import transformLogicalAssignmentOperators from "@babel/plugin-proposal-logical-assignment-operators";
-import transformOptionalChaining from "@babel/plugin-proposal-optional-chaining";
-import transformPipelineOperator from "@babel/plugin-proposal-pipeline-operator";
-import transformNullishCoalescingOperator from "@babel/plugin-proposal-nullish-coalescing-operator";
-import transformDoExpressions from "@babel/plugin-proposal-do-expressions";
-
-export default (_, opts = {}) => {
   const {
     loose = false,
     useBuiltIns = false,
@@ -24,12 +19,12 @@ export default (_, opts = {}) => {
       ],
     ],
     plugins: [
-      transformExportDefaultFrom,
+      babelPlugins.proposalExportDefaultFrom,
-      transformLogicalAssignmentOperators,
+      babelPlugins.proposalLogicalAssignmentOperators,
-      [transformOptionalChaining, { loose }],
+      [babelPlugins.proposalOptionalChaining, { loose }],
-      [transformPipelineOperator, { proposal: pipelineProposal }],
+      [babelPlugins.proposalPipelineOperator, { proposal: pipelineProposal }],
-      [transformNullishCoalescingOperator, { loose }],
+      [babelPlugins.proposalNullishCoalescingOperator, { loose }],
-      transformDoExpressions,
+      babelPlugins.proposalDoExpressions,
     ],
   };
 };

packages/babel-standalone/src/preset-stage-2.js

@@ -1,12 +1,8 @@
+// @flow
 import presetStage3 from "./preset-stage-3";
+import * as babelPlugins from "./generated/plugins";
 
-import transformDecorators from "@babel/plugin-proposal-decorators";
+export default (_: any, opts: Object = {}) => {
-import transformFunctionSent from "@babel/plugin-proposal-function-sent";
-import transformExportNamespaceFrom from "@babel/plugin-proposal-export-namespace-from";
-import transformNumericSeparator from "@babel/plugin-proposal-numeric-separator";
-import transformThrowExpressions from "@babel/plugin-proposal-throw-expressions";
-
-export default (_, opts = {}) => {
   const {
     loose = false,
     useBuiltIns = false,
@@ -18,13 +14,13 @@ export default (_, opts = {}) => {
     presets: [[presetStage3, { loose, useBuiltIns }]],
     plugins: [
       [
-        transformDecorators,
+        babelPlugins.proposalDecorators,
         { legacy: decoratorsLegacy, decoratorsBeforeExport },
       ],
-      transformFunctionSent,
+      babelPlugins.proposalFunctionSent,
-      transformExportNamespaceFrom,
+      babelPlugins.proposalExportNamespaceFrom,
-      transformNumericSeparator,
+      babelPlugins.proposalNumericSeparator,
-      transformThrowExpressions,
+      babelPlugins.proposalThrowExpressions,
     ],
   };
 };

packages/babel-standalone/src/preset-stage-3.js

@@ -1,10 +1,7 @@
-import syntaxDynamicImport from "@babel/plugin-syntax-dynamic-import";
+// @flow
-import syntaxImportMeta from "@babel/plugin-syntax-import-meta";
+import * as babelPlugins from "./generated/plugins";
-import transformClassProperties from "@babel/plugin-proposal-class-properties";
-import transformJsonStrings from "@babel/plugin-proposal-json-strings";
-import transformPrivateMethods from "@babel/plugin-proposal-private-methods";
 
-export default (_, opts) => {
+export default (_: any, opts: Object) => {
   let loose = false;
 
   if (opts !== undefined) {
@@ -13,11 +10,11 @@ export default (_, opts) => {
 
   return {
     plugins: [
-      syntaxDynamicImport,
+      babelPlugins.syntaxDynamicImport,
-      syntaxImportMeta,
+      babelPlugins.syntaxImportMeta,
-      [transformClassProperties, { loose }],
+      [babelPlugins.proposalClassProperties, { loose }],
-      transformJsonStrings,
+      babelPlugins.proposalJsonStrings,
-      [transformPrivateMethods, { loose }],
+      [babelPlugins.proposalPrivateMethods, { loose }],
     ],
   };
 };

packages/babel-types/scripts/generateTypeHelpers.js

@@ -1,39 +1,29 @@
 "use strict";
-const fs = require("fs");
 const path = require("path");
 const chalk = require("chalk");
 const generateBuilders = require("./generators/generateBuilders");
 const generateValidators = require("./generators/generateValidators");
 const generateAsserts = require("./generators/generateAsserts");
 const generateConstants = require("./generators/generateConstants");
-const format = require("./utils/formatCode");
+const format = require("../../../scripts/utils/formatCode");
+const writeFile = require("../../../scripts/utils/writeFileAndMkDir");
 
 const baseDir = path.join(__dirname, "../src");
 
-function writeFile(content, location) {
-  const file = path.join(baseDir, location);
-
-  try {
-    fs.mkdirSync(path.dirname(file));
-  } catch (error) {
-    if (error.code !== "EEXIST") {
-      throw error;
-    }
-  }
-
-  fs.writeFileSync(file, format(content, file));
-}
-
 console.log("Generating @babel/types dynamic functions");
 
-writeFile(generateBuilders(), "builders/generated/index.js");
+const buildersFile = path.join(baseDir, "builders/generated/index.js");
+writeFile(buildersFile, format(generateBuilders(), buildersFile));
 console.log(`  ${chalk.green("✔")} Generated builders`);
 
-writeFile(generateValidators(), "validators/generated/index.js");
+const validatorsFile = path.join(baseDir, "validators/generated/index.js");
+writeFile(validatorsFile, format(generateValidators(), validatorsFile));
 console.log(`  ${chalk.green("✔")} Generated validators`);
 
-writeFile(generateAsserts(), "asserts/generated/index.js");
+const assertsFile = path.join(baseDir, "asserts/generated/index.js");
+writeFile(assertsFile, format(generateAsserts(), assertsFile));
 console.log(`  ${chalk.green("✔")} Generated asserts`);
 
-writeFile(generateConstants(), "constants/generated/index.js");
+const constantsFile = path.join(baseDir, "constants/generated/index.js");
+writeFile(constantsFile, format(generateConstants(), constantsFile));
 console.log(`  ${chalk.green("✔")} Generated constants`);

scripts/utils/formatCode.js

@@ -5,7 +5,7 @@ module.exports = function formatCode(code, filename) {
   filename = filename || __filename;
   const prettierConfig = prettier.resolveConfig.sync(filename);
   prettierConfig.filepath = filename;
-  prettierConfig.parser = "babylon";
+  prettierConfig.parser = "babel";
 
   return prettier.format(code, prettierConfig);
 };

scripts/utils/writeFileAndMkDir.js

@@ -0,0 +1,14 @@
+const fs = require("fs");
+const path = require("path");
+
+module.exports = function writeFileAndMkDir(file, content) {
+  try {
+    fs.mkdirSync(path.dirname(file));
+  } catch (error) {
+    if (error.code !== "EEXIST") {
+      throw error;
+    }
+  }
+
+  fs.writeFileSync(file, content);
+};