nexo/apps/mattermost/metro.config.js

77 lines
3.1 KiB
JavaScript

// Copyright (c) 2015-present Mattermost, Inc. All Rights Reserved.
// See LICENSE.txt for license information.
const path = require('path');
const {getDefaultConfig, mergeConfig} = require('@react-native/metro-config');
const defaultConfig = getDefaultConfig(__dirname);
/**
* Metro configuration
* https://reactnative.dev/docs/metro
*
* @type {import('metro-config').MetroConfig}
*/
// refractor 5.x moved its entry points under lib/ and language files under
// lang/, relying on package.json exports maps that Metro 0.80 doesn't support.
// We implement the exports map manually:
// "." -> lib/common.js
// "./all" -> lib/all.js
// "./core" -> lib/core.js
// "./*" -> lang/*.js (all language files)
const refractorRoot = path.resolve(__dirname, 'node_modules/refractor');
const refractorExact = {
'refractor': path.join(refractorRoot, 'lib/common.js'),
'refractor/all': path.join(refractorRoot, 'lib/all.js'),
'refractor/core': path.join(refractorRoot, 'lib/core.js'),
};
// @formatjs packages declare a wildcard export './locale-data/*' -> './locale-data/*'
// (no .js extension). Metro resolves this to the exact extensionless path which doesn't
// exist — the actual files are locale-data/<locale>.js — causing a warning for every
// locale on every Metro startup. Intercept and redirect to the real .js file.
const formatjsLocalePattern = /^@formatjs\/(intl-(?:pluralrules|numberformat|datetimeformat|listformat|relativetimeformat|displaynames))\/locale-data\/([^/]+)$/;
const config = {
resolver: {
blockList: [
/.*\.test\.(js|jsx|ts|tsx)$/,
/.*\.spec\.(js|jsx|ts|tsx)$/,
/__tests__\/.*/,
/__mocks__\/.*/,
],
resolveRequest: (context, moduleName, platform) => {
if (Object.prototype.hasOwnProperty.call(refractorExact, moduleName)) {
return {type: 'sourceFile', filePath: refractorExact[moduleName]};
}
// refractor/*.* -> refractor/lang/*.js (exports "./*": "./lang/*.js")
if (moduleName.startsWith('refractor/') && !moduleName.includes('/lang/')) {
const lang = moduleName.slice('refractor/'.length);
const filePath = path.join(refractorRoot, 'lang', `${lang}.js`);
if (require('fs').existsSync(filePath)) {
return {type: 'sourceFile', filePath};
}
}
// @formatjs/**/locale-data/<locale> -> locale-data/<locale>.js
const formatjsMatch = moduleName.match(formatjsLocalePattern);
if (formatjsMatch) {
const [, pkg, locale] = formatjsMatch;
const filePath = path.join(__dirname, 'node_modules/@formatjs', pkg, 'locale-data', `${locale}.js`);
if (require('fs').existsSync(filePath)) {
return {type: 'sourceFile', filePath};
}
}
return context.resolveRequest(context, moduleName, platform);
},
},
transformer: {
unstable_allowRequireContext: true,
},
};
module.exports = mergeConfig(defaultConfig, config);