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Fixture: Legacy JSX Runtimes (facebook#20012)
* Fixture: Legacy JSX Runtimes * Add more comments
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‎fixtures/legacy-jsx-runtimes/README.md

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# Legacy JSX Runtimes
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This is an internal testing fixture for the special JSX runtime versions released for 0.14, 15, and 16.
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They are checked into the corresponding `react-*/cjs/*` folders.
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Run the full regression suite:
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```
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yarn
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yarn test
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```

‎fixtures/legacy-jsx-runtimes/babel.config.js

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module.exports = {
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presets: [
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[
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'@babel/react',
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{
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runtime: 'automatic',
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development: process.env.BABEL_ENV === 'development',
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},
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],
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],
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plugins: ['@babel/plugin-transform-modules-commonjs'],
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};

‎fixtures/legacy-jsx-runtimes/lint-runtimes.js

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/**
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* Copyright (c) Facebook, Inc. and its affiliates.
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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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* @emails react-core
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*/
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'use strict';
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const path = require('path');
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const {ESLint} = require('eslint');
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function getESLintInstance(format) {
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return new ESLint({
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useEslintrc: false,
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overrideConfigFile:
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__dirname + `../../../scripts/rollup/validate/eslintrc.${format}.js`,
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ignore: false,
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});
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}
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const esLints = {
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cjs: getESLintInstance('cjs'),
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};
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// Performs sanity checks on bundles *built* by Rollup.
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// Helps catch Rollup regressions.
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async function lint(folder) {
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console.log(`Linting ` + folder);
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const eslint = esLints.cjs;
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const results = await eslint.lintFiles([
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__dirname + '/' + folder + '/cjs/react-jsx-dev-runtime.development.js',
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__dirname + '/' + folder + '/cjs/react-jsx-dev-runtime.production.min.js',
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__dirname + '/' + folder + '/cjs/react-jsx-runtime.development.js',
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__dirname + '/' + folder + '/cjs/react-jsx-runtime.production.min.js',
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]);
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if (
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results.some(result => result.errorCount > 0 || result.warningCount > 0)
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) {
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process.exitCode = 1;
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console.log(`Failed`);
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const formatter = await eslint.loadFormatter('stylish');
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const resultText = formatter.format(results);
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console.log(resultText);
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}
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}
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async function lintEverything() {
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console.log(`Linting known bundles...`);
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await lint('react-14');
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await lint('react-15');
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await lint('react-16');
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await lint('react-17');
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}
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lintEverything().catch(error => {
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process.exitCode = 1;
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console.error(error);
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});

‎fixtures/legacy-jsx-runtimes/package.json

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{
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"dependencies": {
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"@babel/plugin-transform-modules-commonjs": "^7.10.4",
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"@babel/preset-react": "^7.10.4",
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"jest": "^26.5.3"
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},
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"jest": {
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"setupFilesAfterEnv": ["./setupTests.js"]
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},
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"scripts": {
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"install-all": "cd react-14 && yarn && cd ../react-15 && yarn && cd ../react-16 && yarn && cd ../react-17 && yarn && cd ..",
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"lint": "node lint-runtimes.js",
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"pretest": "yarn install-all && yarn lint",
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"test-jsxdev-dev": "BABEL_ENV=development NODE_ENV=development jest",
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"test-jsx-dev": "BABEL_ENV=production NODE_ENV=development jest",
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"test-jsx-prod": "BABEL_ENV=production NODE_ENV=production jest",
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"test": "yarn test-jsxdev-dev && yarn test-jsx-dev && yarn test-jsx-prod"
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}
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}

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