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jest.resolver.js
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jest.resolver.js
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module.exports = (path, options) => {
// Call the defaultResolver, so we leverage its cache, error handling, etc.
return options.defaultResolver(path, {
...options,
// Use packageFilter to process parsed `package.json` before the resolution (see https://www.npmjs.com/package/resolve#resolveid-opts-cb)
packageFilter: (pkg) => {
// see https://thymikee.github.io/jest-preset-angular/docs/guides/troubleshooting/#resolver-needed-for-some-javascript-library-or-nested-dependencies
// see https://github.com/microsoft/accessibility-insights-web/pull/5421#issuecomment-1109168149
// see https://github.com/uuidjs/uuid/pull/616
//
// jest-environment-jsdom 28+ tries to use browser exports instead of default exports,
// but uuid/react-colorful only offers an ESM browser export and not a CommonJS one. Jest does not yet
// support ESM modules natively, so this causes a Jest error related to trying to parse
// "export" syntax.
//
// This workaround prevents Jest from considering uuid/react-colorful's module-based exports at all;
// it falls back to uuid's CommonJS+node "main" property.
//
// Once we're able to migrate our Jest config to ESM and a browser crypto
// implementation is available for the browser+ESM version of uuid to use (eg, via
// https://github.com/jsdom/jsdom/pull/3352 or a similar polyfill), this can go away.
//
// How to test if this is needed anymore:
// - comment it out
// - run `yarn test`
// - if all the tests pass, it means the workaround is no longer needed
const pkgNamesToTarget = new Set([
//
'uuid',
'rxjs',
'@dereekb/firebase-server',
'@dereekb/firebase',
'@dereekb/util',
'@firebase/auth',
'@firebase/storage',
'@firebase/functions',
'@firebase/database',
'@firebase/auth-compat',
'@firebase/database-compat',
'@firebase/app-compat',
'@firebase/firestore',
'@firebase/firestore-compat',
'@firebase/messaging',
'@firebase/util',
'firebase'
]);
if (pkgNamesToTarget.has(pkg.name)) {
// console.log('>>>', pkg.name)
delete pkg['exports'];
delete pkg['module'];
}
return pkg;
}
});
};