672 lines
18 KiB
JavaScript
672 lines
18 KiB
JavaScript
import * as babel from "../lib/index";
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import sourceMap from "source-map";
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import assert from "assert";
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import path from "path";
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import Plugin from "../lib/config/plugin";
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import generator from "@babel/generator";
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function assertIgnored(result) {
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assert.ok(!result);
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}
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function assertNotIgnored(result) {
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assert.ok(!result.ignored);
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}
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// shim
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function transformAsync(code, opts) {
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return {
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then: function(resolve) {
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resolve(babel.transform(code, opts));
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},
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};
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}
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describe("parser and generator options", function() {
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const recast = {
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parse: function(code, opts) {
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return opts.parser.parse(code);
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},
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print: function(ast) {
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return generator(ast);
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},
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};
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function newTransform(string) {
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return babel.transform(string, {
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ast: true,
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parserOpts: {
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parser: recast.parse,
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plugins: ["flow"],
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allowImportExportEverywhere: true,
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},
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generatorOpts: {
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generator: recast.print,
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},
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});
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}
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it("options", function() {
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const string = "original;";
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assert.deepEqual(
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newTransform(string).ast,
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babel.transform(string, { ast: true }).ast,
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);
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assert.equal(newTransform(string).code, string);
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});
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it("experimental syntax", function() {
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const experimental = "var a: number = 1;";
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assert.deepEqual(
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newTransform(experimental).ast,
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babel.transform(experimental, {
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ast: true,
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parserOpts: {
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plugins: ["flow"],
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},
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}).ast,
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);
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assert.equal(newTransform(experimental).code, experimental);
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function newTransformWithPlugins(string) {
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return babel.transform(string, {
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ast: true,
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plugins: [__dirname + "/../../babel-plugin-syntax-flow"],
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parserOpts: {
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parser: recast.parse,
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},
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generatorOpts: {
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generator: recast.print,
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},
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});
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}
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assert.deepEqual(
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newTransformWithPlugins(experimental).ast,
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babel.transform(experimental, {
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ast: true,
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parserOpts: {
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plugins: ["flow"],
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},
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}).ast,
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);
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assert.equal(newTransformWithPlugins(experimental).code, experimental);
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});
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it("other options", function() {
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const experimental = "if (true) {\n import a from 'a';\n}";
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assert.notEqual(
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newTransform(experimental).ast,
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babel.transform(experimental, {
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ast: true,
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parserOpts: {
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allowImportExportEverywhere: true,
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},
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}).ast,
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);
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assert.equal(newTransform(experimental).code, experimental);
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});
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});
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describe("api", function() {
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it("exposes the resolvePlugin method", function() {
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assert.throws(
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() => babel.resolvePlugin("nonexistent-plugin"),
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/Cannot find module 'babel-plugin-nonexistent-plugin'/,
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);
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});
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it("exposes the resolvePreset method", function() {
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assert.throws(
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() => babel.resolvePreset("nonexistent-preset"),
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/Cannot find module 'babel-preset-nonexistent-preset'/,
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);
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});
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it("transformFile", function(done) {
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const options = {
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babelrc: false,
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};
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Object.freeze(options);
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babel.transformFile(__dirname + "/fixtures/api/file.js", options, function(
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err,
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res,
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) {
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if (err) return done(err);
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assert.equal(res.code, "foo();");
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// keep user options untouched
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assert.deepEqual(options, { babelrc: false });
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done();
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});
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});
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it("transformFileSync", function() {
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const options = {
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babelrc: false,
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};
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Object.freeze(options);
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assert.equal(
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babel.transformFileSync(__dirname + "/fixtures/api/file.js", options)
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.code,
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"foo();",
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);
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assert.deepEqual(options, { babelrc: false });
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});
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it("options throw on falsy true", function() {
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return assert.throws(function() {
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babel.transform("", {
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plugins: [__dirname + "/../../babel-plugin-syntax-jsx", false],
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});
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}, /.plugins\[1\] must be a string, object, function/);
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});
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it("options merge backwards", function() {
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return transformAsync("", {
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presets: [__dirname + "/../../babel-preset-es2015"],
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plugins: [__dirname + "/../../babel-plugin-syntax-jsx"],
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}).then(function(result) {
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assert.ok(
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result.options.plugins[0].manipulateOptions.toString().indexOf("jsx") >=
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0,
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);
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});
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});
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it("option wrapPluginVisitorMethod", function() {
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let calledRaw = 0;
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let calledIntercept = 0;
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babel.transform("function foo() { bar(foobar); }", {
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wrapPluginVisitorMethod: function(pluginAlias, visitorType, callback) {
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if (pluginAlias !== "foobar") {
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return callback;
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}
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assert.equal(visitorType, "enter");
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return function() {
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calledIntercept++;
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return callback.apply(this, arguments);
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};
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},
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plugins: [
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new Plugin({
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name: "foobar",
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visitor: {
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"Program|Identifier": function() {
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calledRaw++;
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},
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},
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}),
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],
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});
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assert.equal(calledRaw, 4);
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assert.equal(calledIntercept, 4);
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});
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it("pass per preset", function() {
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let aliasBaseType = null;
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function execTest(passPerPreset) {
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return babel.transform("type Foo = number; let x = (y): Foo => y;", {
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sourceType: "script",
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passPerPreset: passPerPreset,
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presets: [
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// First preset with our plugin, "before"
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function() {
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return {
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plugins: [
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new Plugin({
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visitor: {
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Function: function(path) {
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const alias = path.scope
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.getProgramParent()
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.path.get("body")[0].node;
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if (!babel.types.isTypeAlias(alias)) return;
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// In case of `passPerPreset` being `false`, the
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// alias node is already removed by Flow plugin.
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if (!alias) {
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return;
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}
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// In case of `passPerPreset` being `true`, the
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// alias node should still exist.
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aliasBaseType = alias.right.type; // NumberTypeAnnotation
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},
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},
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}),
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],
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};
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},
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// ES2015 preset
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require(__dirname + "/../../babel-preset-es2015"),
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// Third preset for Flow.
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function() {
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return {
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plugins: [
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require(__dirname + "/../../babel-plugin-syntax-flow"),
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require(__dirname +
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"/../../babel-plugin-transform-flow-strip-types"),
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],
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};
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},
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],
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});
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}
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// 1. passPerPreset: true
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let result = execTest(true);
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assert.equal(aliasBaseType, "NumberTypeAnnotation");
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assert.deepEqual(result.code, "var x = function x(y) {\n return y;\n};");
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// 2. passPerPreset: false
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aliasBaseType = null;
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result = execTest(false);
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assert.equal(aliasBaseType, null);
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assert.deepEqual(result.code, "var x = function x(y) {\n return y;\n};");
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});
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it("complex plugin and preset ordering", function() {
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function pushPlugin(str) {
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return {
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visitor: {
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Program(path) {
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path.pushContainer(
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"body",
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babel.types.expressionStatement(babel.types.identifier(str)),
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);
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},
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},
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};
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}
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function pushPreset(str) {
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return { plugins: [pushPlugin(str)] };
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}
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const result = babel.transform("", {
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filename: path.join(
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__dirname,
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"fixtures",
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"config",
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"complex-plugin-config",
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"file.js",
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),
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presets: [pushPreset("argone"), pushPreset("argtwo")],
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env: {
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development: {
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passPerPreset: true,
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presets: [pushPreset("argthree"), pushPreset("argfour")],
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},
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},
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});
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assert.equal(
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result.code,
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[
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"thirteen;",
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"fourteen;",
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"seventeen;",
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"eighteen;",
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"one;",
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"two;",
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"eleven;",
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"twelve;",
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"argtwo;",
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"argone;",
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"five;",
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"six;",
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"three;",
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"four;",
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"nineteen;",
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"twenty;",
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"fifteen;",
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"sixteen;",
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"seven;",
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"eight;",
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"nine;",
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"ten;",
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"argthree;",
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"argfour;",
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].join("\n"),
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);
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});
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it("source map merging", function() {
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const result = babel.transform(
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[
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/* eslint-disable max-len */
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'function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError("Cannot call a class as a function"); } }',
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"",
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"let Foo = function Foo() {",
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" _classCallCheck(this, Foo);",
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"};",
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"",
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"//# sourceMappingURL=data:application/json;base64,eyJ2ZXJzaW9uIjozLCJzb3VyY2VzIjpbInN0ZG91dCJdLCJuYW1lcyI6W10sIm1hcHBpbmdzIjoiOztJQUFNLEdBQUcsWUFBSCxHQUFHO3dCQUFILEdBQUciLCJmaWxlIjoidW5kZWZpbmVkIiwic291cmNlc0NvbnRlbnQiOlsiY2xhc3MgRm9vIHt9XG4iXX0=",
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/* eslint-enable max-len */
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].join("\n"),
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{
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sourceMap: true,
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},
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);
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assert.deepEqual(
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[
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"function _classCallCheck(instance, Constructor) {",
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" if (!(instance instanceof Constructor)) {",
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' throw new TypeError("Cannot call a class as a function");',
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" }",
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"}",
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"",
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"let Foo = function Foo() {",
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" _classCallCheck(this, Foo);",
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"};",
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].join("\n"),
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result.code,
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);
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const consumer = new sourceMap.SourceMapConsumer(result.map);
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assert.deepEqual(
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consumer.originalPositionFor({
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line: 7,
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column: 4,
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}),
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{
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name: null,
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source: "stdout",
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line: 1,
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column: 6,
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},
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);
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});
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it("code option false", function() {
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return transformAsync("foo('bar');", { code: false }).then(function(
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result,
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) {
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assert.ok(!result.code);
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});
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});
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it("ast option false", function() {
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return transformAsync("foo('bar');", { ast: false }).then(function(result) {
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assert.ok(!result.ast);
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});
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});
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it("ast option true", function() {
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return transformAsync("foo('bar');", { ast: true }).then(function(result) {
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assert.ok(result.ast);
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});
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});
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it("ast option default", function() {
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return transformAsync("foo('bar');").then(function(result) {
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assert.ok(!result.ast);
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});
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});
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it("auxiliaryComment option", function() {
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return transformAsync("class Foo {}", {
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auxiliaryCommentBefore: "before",
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auxiliaryCommentAfter: "after",
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plugins: [
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function(babel) {
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const t = babel.types;
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return {
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visitor: {
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Program: function(path) {
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path.unshiftContainer(
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"body",
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t.expressionStatement(t.identifier("start")),
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);
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path.pushContainer(
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"body",
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t.expressionStatement(t.identifier("end")),
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);
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},
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},
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};
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},
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],
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}).then(function(result) {
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assert.equal(
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result.code,
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"/*before*/\nstart;\n\n/*after*/\nclass Foo {}\n\n/*before*/\nend;\n\n/*after*/",
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);
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});
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});
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it("ignore option", function() {
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return Promise.all([
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transformAsync("", {
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ignore: ["/foo"],
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filename: "/foo/node_modules/bar",
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}).then(assertIgnored),
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transformAsync("", {
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ignore: ["/foo/node_modules"],
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filename: "/foo/node_modules/bar",
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}).then(assertIgnored),
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transformAsync("", {
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ignore: ["/foo/node_modules/*"],
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filename: "/foo/node_modules/bar",
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}).then(assertIgnored),
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transformAsync("", {
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ignore: ["/foo/**/*"],
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filename: "/foo/node_modules/bar",
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}).then(assertIgnored),
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transformAsync("", {
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ignore: ["/foo/node_modules/*.bar"],
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filename: "/foo/node_modules/foo.bar",
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}).then(assertIgnored),
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transformAsync("", {
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ignore: ["/foo/node_modules/*.foo"],
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filename: "/foo/node_modules/foo.bar",
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}).then(assertNotIgnored),
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transformAsync("", {
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ignore: ["/bar/**/*"],
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filename: "/foo/node_modules/foo.bar",
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}).then(assertNotIgnored),
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]);
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});
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it("only option", function() {
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return Promise.all([
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transformAsync("", {
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only: ["/foo"],
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filename: "/foo/node_modules/bar",
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}).then(assertNotIgnored),
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transformAsync("", {
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only: ["/foo/*"],
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filename: "/foo/node_modules/bar",
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}).then(assertNotIgnored),
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transformAsync("", {
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only: ["/foo/node_modules"],
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filename: "/foo/node_modules/bar",
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}).then(assertNotIgnored),
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transformAsync("", {
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only: ["/foo/node_modules/*.bar"],
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filename: "/foo/node_modules/foo.bar",
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}).then(assertNotIgnored),
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transformAsync("", {
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only: ["/foo/node_modules"],
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filename: "/foo/node_module/bar",
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}).then(assertIgnored),
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transformAsync("", {
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only: ["/foo/node_modules"],
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filename: "/bar/node_modules/foo",
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}).then(assertIgnored),
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transformAsync("", {
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only: ["/foo/node_modules/*.bar"],
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filename: "/foo/node_modules/bar.foo",
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}).then(assertIgnored),
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]);
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});
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describe("env option", function() {
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const oldBabelEnv = process.env.BABEL_ENV;
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const oldNodeEnv = process.env.NODE_ENV;
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setup(function() {
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// Tests need to run with the default and specific values for these. They
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// need to be cleared for each test.
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delete process.env.BABEL_ENV;
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delete process.env.NODE_ENV;
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});
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suiteTeardown(function() {
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process.env.BABEL_ENV = oldBabelEnv;
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process.env.NODE_ENV = oldNodeEnv;
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});
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it("default", function() {
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const result = babel.transform("foo;", {
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env: {
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development: { comments: false },
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},
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});
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assert.equal(result.options.comments, false);
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});
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it("BABEL_ENV", function() {
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process.env.BABEL_ENV = "foo";
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const result = babel.transform("foo;", {
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env: {
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foo: { comments: false },
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},
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});
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assert.equal(result.options.comments, false);
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});
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it("NODE_ENV", function() {
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process.env.NODE_ENV = "foo";
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const result = babel.transform("foo;", {
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env: {
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foo: { comments: false },
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},
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});
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assert.equal(result.options.comments, false);
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});
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});
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describe("buildExternalHelpers", function() {
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describe("smoke tests", function() {
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it("builds external helpers in global output type", function() {
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babel.buildExternalHelpers(null, "global");
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});
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it("builds external helpers in module output type", function() {
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babel.buildExternalHelpers(null, "module");
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});
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it("builds external helpers in umd output type", function() {
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babel.buildExternalHelpers(null, "umd");
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});
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it("builds external helpers in var output type", function() {
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babel.buildExternalHelpers(null, "var");
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});
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});
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it("all", function() {
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|
const script = babel.buildExternalHelpers();
|
|
assert.ok(script.indexOf("classCallCheck") >= -1);
|
|
assert.ok(script.indexOf("inherits") >= 0);
|
|
});
|
|
|
|
it("whitelist", function() {
|
|
const script = babel.buildExternalHelpers(["inherits"]);
|
|
assert.ok(script.indexOf("classCallCheck") === -1);
|
|
assert.ok(script.indexOf("inherits") >= 0);
|
|
});
|
|
|
|
it("empty whitelist", function() {
|
|
const script = babel.buildExternalHelpers([]);
|
|
assert.ok(script.indexOf("classCallCheck") === -1);
|
|
assert.ok(script.indexOf("inherits") === -1);
|
|
});
|
|
|
|
it("underscored", function() {
|
|
const script = babel.buildExternalHelpers(["typeof"]);
|
|
assert.ok(script.indexOf("typeof") >= 0);
|
|
});
|
|
});
|
|
|
|
describe("handle parsing errors", function() {
|
|
const options = {
|
|
babelrc: false,
|
|
};
|
|
|
|
it("only syntax plugin available", function(done) {
|
|
babel.transformFile(
|
|
__dirname + "/fixtures/api/parsing-errors/only-syntax/file.js",
|
|
options,
|
|
function(err) {
|
|
assert.ok(
|
|
RegExp(
|
|
"Support for the experimental syntax 'dynamicImport' isn't currently enabled \\(1:9\\):",
|
|
).exec(err.message),
|
|
);
|
|
assert.ok(
|
|
RegExp(
|
|
"Add @babel/plugin-syntax-dynamic-import \\(https://git.io/vb4Sv\\) to the " +
|
|
"'plugins' section of your Babel config to enable parsing.",
|
|
).exec(err.message),
|
|
);
|
|
done();
|
|
},
|
|
);
|
|
});
|
|
|
|
it("both syntax and transform plugin available", function(done) {
|
|
babel.transformFile(
|
|
__dirname + "/fixtures/api/parsing-errors/syntax-and-transform/file.js",
|
|
options,
|
|
function(err) {
|
|
assert.ok(
|
|
RegExp(
|
|
"Support for the experimental syntax 'asyncGenerators' isn't currently enabled \\(1:15\\):",
|
|
).exec(err.message),
|
|
);
|
|
assert.ok(
|
|
RegExp(
|
|
"Add @babel/plugin-proposal-async-generator-functions \\(https://git.io/vb4yp\\) to the " +
|
|
"'plugins' section of your Babel config to enable transformation.",
|
|
).exec(err.message),
|
|
);
|
|
done();
|
|
},
|
|
);
|
|
});
|
|
});
|
|
});
|