mirror of
https://github.com/facebook/react-native.git
synced 2025-11-01 09:14:26 +00:00
Rafael OlezaandMike Grabowski
e2b9b71652
Summary: Up until now, transformers in Metro received the absolute path of a file, the relative path of a file and the projectRoot. This diff gets rid of the absolute path sent to the worker, since by having the projectRoot and the relative path, the absolute path can be easily calculated. This has been done to avoid having absolute paths as transform options, since we need to have custom logic to filter them out from the cache key generation, which is dangerous. Reviewed By: mjesun Differential Revision: D9195147 fbshipit-source-id: e95c5c29272eec7f1a48af7cede4c6d6b4a8ffb7
124 lines
4.2 KiB
JavaScript
124 lines
4.2 KiB
JavaScript
/**
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* Copyright (c) 2015-present, Facebook, Inc.
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*
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* This source code is licensed under the MIT license found in the
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* LICENSE file in the root directory of this source tree.
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*
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* @format
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* @flow
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*/
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/* eslint-env node */
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'use strict';
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const {transformSync: babelTransformSync} = require('@babel/core');
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/* $FlowFixMe(>=0.54.0 site=react_native_oss) This comment suppresses an error
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* found when Flow v0.54 was deployed. To see the error delete this comment and
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* run Flow. */
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const babelRegisterOnly = require('metro-babel-register');
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/* $FlowFixMe(>=0.54.0 site=react_native_oss) This comment suppresses an error
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* found when Flow v0.54 was deployed. To see the error delete this comment and
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* run Flow. */
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const createCacheKeyFunction = require('fbjs-scripts/jest/createCacheKeyFunction');
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const generate = require('@babel/generator').default;
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const nodeFiles = RegExp(
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[
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'/local-cli/',
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'/metro(?:-[^/]*)?/', // metro, metro-core, metro-source-map, metro-etc
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].join('|'),
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);
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const nodeOptions = babelRegisterOnly.config([nodeFiles]);
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babelRegisterOnly([]);
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/* $FlowFixMe(site=react_native_oss) */
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const transformer = require('metro/src/reactNativeTransformer');
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module.exports = {
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process(src /*: string */, file /*: string */) {
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if (nodeFiles.test(file)) {
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// node specific transforms only
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return babelTransformSync(src, {
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filename: file,
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sourceType: 'script',
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...nodeOptions,
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ast: false,
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}).code;
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}
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const {ast} = transformer.transform({
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filename: file,
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options: {
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ast: true, // needed for open source (?) https://github.com/facebook/react-native/commit/f8d6b97140cffe8d18b2558f94570c8d1b410d5c#r28647044
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dev: true,
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inlineRequires: true,
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minify: false,
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platform: '',
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projectRoot: '',
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retainLines: true,
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sourceType: 'unambiguous', // b7 required. detects module vs script mode
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},
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src,
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plugins: [
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[require('@babel/plugin-transform-block-scoping')],
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// the flow strip types plugin must go BEFORE class properties!
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// there'll be a test case that fails if you don't.
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[require('@babel/plugin-transform-flow-strip-types')],
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[
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require('@babel/plugin-proposal-class-properties'),
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// use `this.foo = bar` instead of `this.defineProperty('foo', ...)`
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{loose: true},
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],
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[require('@babel/plugin-transform-computed-properties')],
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[require('@babel/plugin-transform-destructuring')],
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[require('@babel/plugin-transform-function-name')],
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[require('@babel/plugin-transform-literals')],
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[require('@babel/plugin-transform-parameters')],
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[require('@babel/plugin-transform-shorthand-properties')],
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[require('@babel/plugin-transform-react-jsx')],
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[require('@babel/plugin-transform-regenerator')],
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[require('@babel/plugin-transform-sticky-regex')],
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[require('@babel/plugin-transform-unicode-regex')],
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[
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require('@babel/plugin-transform-modules-commonjs'),
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{strict: false, allowTopLevelThis: true},
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],
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[require('@babel/plugin-transform-classes')],
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[require('@babel/plugin-transform-arrow-functions')],
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[require('@babel/plugin-transform-spread')],
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[require('@babel/plugin-proposal-object-rest-spread')],
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[
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require('@babel/plugin-transform-template-literals'),
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{loose: true}, // dont 'a'.concat('b'), just use 'a'+'b'
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],
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[require('@babel/plugin-transform-exponentiation-operator')],
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[require('@babel/plugin-transform-object-assign')],
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[require('@babel/plugin-transform-for-of'), {loose: true}],
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[require('@babel/plugin-transform-react-display-name')],
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[require('@babel/plugin-transform-react-jsx-source')],
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],
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});
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return generate(
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ast,
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{
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code: true,
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comments: false,
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compact: false,
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filename: file,
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retainLines: true,
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sourceFileName: file,
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sourceMaps: true,
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},
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src,
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).code;
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},
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getCacheKey: createCacheKeyFunction([
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__filename,
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require.resolve('metro/src/reactNativeTransformer'),
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require.resolve('@babel/core/package.json'),
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]),
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};
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