228 lines
7.8 KiB
JavaScript
228 lines
7.8 KiB
JavaScript
|
/**
|
||
|
* Copyright (c) 2015-present, Facebook, Inc.
|
||
|
*
|
||
|
* This source code is licensed under the MIT license found in the
|
||
|
* LICENSE file in the root directory of this source tree.
|
||
|
*/
|
||
|
'use strict';
|
||
|
|
||
|
const path = require('path');
|
||
|
|
||
|
const validateBoolOption = (name, value, defaultValue) => {
|
||
|
if (typeof value === 'undefined') {
|
||
|
value = defaultValue;
|
||
|
}
|
||
|
|
||
|
if (typeof value !== 'boolean') {
|
||
|
throw new Error(`Preset react-app: '${name}' option must be a boolean.`);
|
||
|
}
|
||
|
|
||
|
return value;
|
||
|
};
|
||
|
|
||
|
module.exports = function (api, opts, env) {
|
||
|
if (!opts) {
|
||
|
opts = {};
|
||
|
}
|
||
|
|
||
|
var isEnvDevelopment = env === 'development';
|
||
|
var isEnvProduction = env === 'production';
|
||
|
var isEnvTest = env === 'test';
|
||
|
|
||
|
var useESModules = validateBoolOption(
|
||
|
'useESModules',
|
||
|
opts.useESModules,
|
||
|
isEnvDevelopment || isEnvProduction
|
||
|
);
|
||
|
var isFlowEnabled = validateBoolOption('flow', opts.flow, true);
|
||
|
var isTypeScriptEnabled = validateBoolOption(
|
||
|
'typescript',
|
||
|
opts.typescript,
|
||
|
true
|
||
|
);
|
||
|
var areHelpersEnabled = validateBoolOption('helpers', opts.helpers, true);
|
||
|
var useAbsoluteRuntime = validateBoolOption(
|
||
|
'absoluteRuntime',
|
||
|
opts.absoluteRuntime,
|
||
|
true
|
||
|
);
|
||
|
|
||
|
var absoluteRuntimePath = undefined;
|
||
|
if (useAbsoluteRuntime) {
|
||
|
absoluteRuntimePath = path.dirname(
|
||
|
require.resolve('@babel/runtime/package.json')
|
||
|
);
|
||
|
}
|
||
|
|
||
|
if (!isEnvDevelopment && !isEnvProduction && !isEnvTest) {
|
||
|
throw new Error(
|
||
|
'Using `babel-preset-react-app` requires that you specify `NODE_ENV` or ' +
|
||
|
'`BABEL_ENV` environment variables. Valid values are "development", ' +
|
||
|
'"test", and "production". Instead, received: ' +
|
||
|
JSON.stringify(env) +
|
||
|
'.'
|
||
|
);
|
||
|
}
|
||
|
|
||
|
return {
|
||
|
presets: [
|
||
|
isEnvTest && [
|
||
|
// ES features necessary for user's Node version
|
||
|
require('@babel/preset-env').default,
|
||
|
{
|
||
|
targets: {
|
||
|
node: 'current',
|
||
|
},
|
||
|
},
|
||
|
],
|
||
|
(isEnvProduction || isEnvDevelopment) && [
|
||
|
// Latest stable ECMAScript features
|
||
|
require('@babel/preset-env').default,
|
||
|
{
|
||
|
// Allow importing core-js in entrypoint and use browserlist to select polyfills
|
||
|
useBuiltIns: 'entry',
|
||
|
// Set the corejs version we are using to avoid warnings in console
|
||
|
corejs: 3,
|
||
|
// Exclude transforms that make all code slower
|
||
|
exclude: ['transform-typeof-symbol'],
|
||
|
},
|
||
|
],
|
||
|
[
|
||
|
require('@babel/preset-react').default,
|
||
|
{
|
||
|
// Adds component stack to warning messages
|
||
|
// Adds __self attribute to JSX which React will use for some warnings
|
||
|
development: isEnvDevelopment || isEnvTest,
|
||
|
// Will use the native built-in instead of trying to polyfill
|
||
|
// behavior for any plugins that require one.
|
||
|
...(opts.runtime !== 'automatic' ? { useBuiltIns: true } : {}),
|
||
|
runtime: opts.runtime || 'classic',
|
||
|
},
|
||
|
],
|
||
|
isTypeScriptEnabled && [require('@babel/preset-typescript').default],
|
||
|
].filter(Boolean),
|
||
|
plugins: [
|
||
|
// Strip flow types before any other transform, emulating the behavior
|
||
|
// order as-if the browser supported all of the succeeding features
|
||
|
// https://github.com/facebook/create-react-app/pull/5182
|
||
|
// We will conditionally enable this plugin below in overrides as it clashes with
|
||
|
// @babel/plugin-proposal-decorators when using TypeScript.
|
||
|
// https://github.com/facebook/create-react-app/issues/5741
|
||
|
isFlowEnabled && [
|
||
|
require('@babel/plugin-transform-flow-strip-types').default,
|
||
|
false,
|
||
|
],
|
||
|
// Experimental macros support. Will be documented after it's had some time
|
||
|
// in the wild.
|
||
|
require('babel-plugin-macros'),
|
||
|
// Disabled as it's handled automatically by preset-env, and `selectiveLoose` isn't
|
||
|
// yet merged into babel: https://github.com/babel/babel/pull/9486
|
||
|
// Related: https://github.com/facebook/create-react-app/pull/8215
|
||
|
// [
|
||
|
// require('@babel/plugin-transform-destructuring').default,
|
||
|
// {
|
||
|
// // Use loose mode for performance:
|
||
|
// // https://github.com/facebook/create-react-app/issues/5602
|
||
|
// loose: false,
|
||
|
// selectiveLoose: [
|
||
|
// 'useState',
|
||
|
// 'useEffect',
|
||
|
// 'useContext',
|
||
|
// 'useReducer',
|
||
|
// 'useCallback',
|
||
|
// 'useMemo',
|
||
|
// 'useRef',
|
||
|
// 'useImperativeHandle',
|
||
|
// 'useLayoutEffect',
|
||
|
// 'useDebugValue',
|
||
|
// ],
|
||
|
// },
|
||
|
// ],
|
||
|
// Turn on legacy decorators for TypeScript files
|
||
|
isTypeScriptEnabled && [
|
||
|
require('@babel/plugin-proposal-decorators').default,
|
||
|
false,
|
||
|
],
|
||
|
// class { handleClick = () => { } }
|
||
|
// Enable loose mode to use assignment instead of defineProperty
|
||
|
// See discussion in https://github.com/facebook/create-react-app/issues/4263
|
||
|
// Note:
|
||
|
// 'loose' mode configuration must be the same for
|
||
|
// * @babel/plugin-proposal-class-properties
|
||
|
// * @babel/plugin-proposal-private-methods
|
||
|
// * @babel/plugin-proposal-private-property-in-object
|
||
|
// (when they are enabled)
|
||
|
[
|
||
|
require('@babel/plugin-proposal-class-properties').default,
|
||
|
{
|
||
|
loose: true,
|
||
|
},
|
||
|
],
|
||
|
[
|
||
|
require('@babel/plugin-proposal-private-methods').default,
|
||
|
{
|
||
|
loose: true,
|
||
|
},
|
||
|
],
|
||
|
[
|
||
|
require('@babel/plugin-proposal-private-property-in-object').default,
|
||
|
{
|
||
|
loose: true,
|
||
|
},
|
||
|
],
|
||
|
// Adds Numeric Separators
|
||
|
require('@babel/plugin-proposal-numeric-separator').default,
|
||
|
// Polyfills the runtime needed for async/await, generators, and friends
|
||
|
// https://babeljs.io/docs/en/babel-plugin-transform-runtime
|
||
|
[
|
||
|
require('@babel/plugin-transform-runtime').default,
|
||
|
{
|
||
|
corejs: false,
|
||
|
helpers: areHelpersEnabled,
|
||
|
// By default, babel assumes babel/runtime version 7.0.0-beta.0,
|
||
|
// explicitly resolving to match the provided helper functions.
|
||
|
// https://github.com/babel/babel/issues/10261
|
||
|
version: require('@babel/runtime/package.json').version,
|
||
|
regenerator: true,
|
||
|
// https://babeljs.io/docs/en/babel-plugin-transform-runtime#useesmodules
|
||
|
// We should turn this on once the lowest version of Node LTS
|
||
|
// supports ES Modules.
|
||
|
useESModules,
|
||
|
// Undocumented option that lets us encapsulate our runtime, ensuring
|
||
|
// the correct version is used
|
||
|
// https://github.com/babel/babel/blob/090c364a90fe73d36a30707fc612ce037bdbbb24/packages/babel-plugin-transform-runtime/src/index.js#L35-L42
|
||
|
absoluteRuntime: absoluteRuntimePath,
|
||
|
},
|
||
|
],
|
||
|
isEnvProduction && [
|
||
|
// Remove PropTypes from production build
|
||
|
require('babel-plugin-transform-react-remove-prop-types').default,
|
||
|
{
|
||
|
removeImport: true,
|
||
|
},
|
||
|
],
|
||
|
// Optional chaining and nullish coalescing are supported in @babel/preset-env,
|
||
|
// but not yet supported in webpack due to support missing from acorn.
|
||
|
// These can be removed once webpack has support.
|
||
|
// See https://github.com/facebook/create-react-app/issues/8445#issuecomment-588512250
|
||
|
require('@babel/plugin-proposal-optional-chaining').default,
|
||
|
require('@babel/plugin-proposal-nullish-coalescing-operator').default,
|
||
|
].filter(Boolean),
|
||
|
overrides: [
|
||
|
isFlowEnabled && {
|
||
|
exclude: /\.tsx?$/,
|
||
|
plugins: [require('@babel/plugin-transform-flow-strip-types').default],
|
||
|
},
|
||
|
isTypeScriptEnabled && {
|
||
|
test: /\.tsx?$/,
|
||
|
plugins: [
|
||
|
[
|
||
|
require('@babel/plugin-proposal-decorators').default,
|
||
|
{ legacy: true },
|
||
|
],
|
||
|
],
|
||
|
},
|
||
|
].filter(Boolean),
|
||
|
};
|
||
|
};
|