87ca6150ae
* Remove bc code from preset handling and preset-es2015 * Add more tests * Only allow functions for presets * Fix lint
636 lines
18 KiB
JavaScript
636 lines
18 KiB
JavaScript
import * as babel from "../lib/index";
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import buildExternalHelpers from "../lib/tools/build-external-helpers";
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import sourceMap from "source-map";
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import assert from "assert";
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import Plugin from "../lib/transformation/plugin";
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import generator from "babel-generator";
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function assertIgnored(result) {
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assert.ok(result.ignored);
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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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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(newTransform(string).ast, babel.transform(string).ast);
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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(newTransform(experimental).ast, babel.transform(experimental, {
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parserOpts: {
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plugins: ["flow"]
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}
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}).ast);
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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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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(newTransformWithPlugins(experimental).ast, babel.transform(experimental, {
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parserOpts: {
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plugins: ["flow"]
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}
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}).ast);
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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(newTransform(experimental).ast, babel.transform(experimental, {
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parserOpts: {
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allowImportExportEverywhere: true
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}
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}).ast);
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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("analyze", function () {
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assert.equal(babel.analyse("foobar;").marked.length, 0);
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assert.equal(babel.analyse("foobar;", {
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plugins: [new Plugin({
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visitor: {
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Program: function (path) {
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path.mark("category", "foobar");
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}
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}
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})]
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}).marked[0].message, "foobar");
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assert.equal(babel.analyse("foobar;", {}, {
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Program: function (path) {
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path.mark("category", "foobar");
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}
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}).marked[0].message, "foobar");
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});
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it("exposes the resolvePlugin method", function() {
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assert.equal(babel.resolvePlugin("nonexistent-plugin"), null);
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});
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it("exposes the resolvePreset method", function() {
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assert.equal(babel.resolvePreset("nonexistent-preset"), null);
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});
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it("transformFile", function (done) {
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babel.transformFile(__dirname + "/fixtures/api/file.js", {}, function (err, res) {
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if (err) return done(err);
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assert.equal(res.code, "foo();");
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done();
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});
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});
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it("transformFileSync", function () {
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assert.equal(babel.transformFileSync(__dirname + "/fixtures/api/file.js", {}).code, "foo();");
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});
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it("options throw on falsy true", function () {
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return assert.throws(
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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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},
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/TypeError: Falsy value found in plugins/
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);
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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(result.options.plugins[0][0].manipulateOptions.toString().indexOf("jsx") >= 0);
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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: [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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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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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.getProgramParent().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 + "/../../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([
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"\"use strict\";",
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"",
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"var x = function x(y) {",
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" return y;",
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"};"
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].join("\n"), result.code);
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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([
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"\"use strict\";",
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"",
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"var x = function x(y) {",
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" return y;",
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"};"
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].join("\n"), result.code);
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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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/* 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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sourceMap: true
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});
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assert.deepEqual([
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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"), result.code);
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const consumer = new sourceMap.SourceMapConsumer(result.map);
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assert.deepEqual(consumer.originalPositionFor({
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line: 7,
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column: 4
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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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it("code option false", function () {
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return transformAsync("foo('bar');", { code: false }).then(function (result) {
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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("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: [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("body", t.expressionStatement(t.identifier("start")));
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path.pushContainer("body", 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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}).then(function (result) {
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assert.equal(result.code,
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"/*before*/start;\n/*after*/class Foo {}\n/*before*/end;\n/*after*/");
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});
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});
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it("modules metadata", function () {
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return Promise.all([
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// eslint-disable-next-line max-len
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transformAsync("import { externalName as localName } from \"external\";").then(function (result) {
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assert.deepEqual(result.metadata.modules.imports[0], {
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source: "external",
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imported: ["externalName"],
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specifiers: [{
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kind: "named",
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imported: "externalName",
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local: "localName"
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}]
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});
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}),
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transformAsync("import * as localName2 from \"external\";").then(function (result) {
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assert.deepEqual(result.metadata.modules.imports[0], {
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source: "external",
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imported: ["*"],
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specifiers: [{
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kind: "namespace",
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local: "localName2"
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}]
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});
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}),
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transformAsync("import localName3 from \"external\";").then(function (result) {
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assert.deepEqual(result.metadata.modules.imports[0], {
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source: "external",
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imported: ["default"],
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specifiers: [{
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kind: "named",
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imported: "default",
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local: "localName3"
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}]
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});
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}),
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transformAsync("import localName from \"./array\";", {
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resolveModuleSource: function() {
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return "override-source";
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}
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}).then(function (result) {
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assert.deepEqual(result.metadata.modules.imports, [
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{
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source: "override-source",
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imported: ["default"],
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specifiers: [
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{
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"kind": "named",
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"imported": "default",
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"local": "localName"
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}
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]
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}
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]);
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}),
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transformAsync("export * as externalName1 from \"external\";", {
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plugins: [require("../../babel-plugin-syntax-export-extensions")]
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}).then(function (result) {
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assert.deepEqual(result.metadata.modules.exports, {
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exported: ["externalName1"],
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specifiers: [{
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kind: "external-namespace",
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exported: "externalName1",
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source: "external",
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}]
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});
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}),
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transformAsync("export externalName2 from \"external\";", {
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plugins: [require("../../babel-plugin-syntax-export-extensions")]
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}).then(function (result) {
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assert.deepEqual(result.metadata.modules.exports, {
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exported: ["externalName2"],
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specifiers: [{
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kind: "external",
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local: "externalName2",
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exported: "externalName2",
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source: "external"
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}]
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});
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}),
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transformAsync("export function namedFunction() {}").then(function (result) {
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assert.deepEqual(result.metadata.modules.exports, {
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exported: ["namedFunction"],
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specifiers: [{
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kind: "local",
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local: "namedFunction",
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exported: "namedFunction"
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}]
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});
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}),
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transformAsync("export var foo = \"bar\";").then(function (result) {
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assert.deepEqual(result.metadata.modules.exports, {
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"exported": ["foo"],
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specifiers: [{
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kind: "local",
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local: "foo",
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exported: "foo"
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}]
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});
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}),
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transformAsync("export { localName as externalName3 };").then(function (result) {
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assert.deepEqual(result.metadata.modules.exports, {
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exported: ["externalName3"],
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specifiers: [{
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kind: "local",
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local: "localName",
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exported: "externalName3"
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}]
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});
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}),
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transformAsync("export { externalName4 } from \"external\";").then(function (result) {
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assert.deepEqual(result.metadata.modules.exports, {
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exported: ["externalName4"],
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specifiers: [{
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kind: "external",
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local: "externalName4",
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exported: "externalName4",
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source: "external"
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}]
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});
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}),
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transformAsync("export * from \"external\";").then(function (result) {
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assert.deepEqual(result.metadata.modules.exports, {
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exported: [],
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specifiers: [{
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kind: "external-all",
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source: "external"
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}]
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});
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}),
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transformAsync("export default function defaultFunction() {}").then(function (result) {
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assert.deepEqual(result.metadata.modules.exports, {
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exported: ["defaultFunction"],
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specifiers: [{
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kind: "local",
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local: "defaultFunction",
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exported: "default"
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}]
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});
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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: "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/node_modules/*.bar",
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filename: "/foo/node_modules/foo.bar"
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}).then(assertIgnored)
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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: "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",
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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: "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: { code: false }
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}
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});
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assert.equal(result.code, undefined);
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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: { code: false }
|
|
}
|
|
});
|
|
assert.equal(result.code, undefined);
|
|
});
|
|
|
|
it("NODE_ENV", function () {
|
|
process.env.NODE_ENV = "foo";
|
|
const result = babel.transform("foo;", {
|
|
env: {
|
|
foo: { code: false }
|
|
}
|
|
});
|
|
assert.equal(result.code, undefined);
|
|
});
|
|
});
|
|
|
|
it("resolveModuleSource option", function () {
|
|
/* eslint-disable max-len */
|
|
const actual = "import foo from \"foo-import-default\";\nimport \"foo-import-bare\";\nexport { foo } from \"foo-export-named\";";
|
|
const expected = "import foo from \"resolved/foo-import-default\";\nimport \"resolved/foo-import-bare\";\nexport { foo } from \"resolved/foo-export-named\";";
|
|
/* eslint-enable max-len */
|
|
|
|
return transformAsync(actual, {
|
|
resolveModuleSource: function (originalSource) {
|
|
return "resolved/" + originalSource;
|
|
}
|
|
}).then(function (result) {
|
|
assert.equal(result.code.trim(), expected);
|
|
});
|
|
});
|
|
|
|
describe("buildExternalHelpers", function () {
|
|
it("all", function () {
|
|
const script = buildExternalHelpers();
|
|
assert.ok(script.indexOf("classCallCheck") >= -1);
|
|
assert.ok(script.indexOf("inherits") >= 0);
|
|
});
|
|
|
|
it("whitelist", function () {
|
|
const script = buildExternalHelpers(["inherits"]);
|
|
assert.ok(script.indexOf("classCallCheck") === -1);
|
|
assert.ok(script.indexOf("inherits") >= 0);
|
|
});
|
|
|
|
it("empty whitelist", function () {
|
|
const script = buildExternalHelpers([]);
|
|
assert.ok(script.indexOf("classCallCheck") === -1);
|
|
assert.ok(script.indexOf("inherits") === -1);
|
|
});
|
|
|
|
it("underscored", function () {
|
|
const script = buildExternalHelpers(["typeof"]);
|
|
assert.ok(script.indexOf("typeof") >= 0);
|
|
});
|
|
});
|
|
});
|