fileTransformer.js

/**
 * Copyright (c) Meta Platforms, Inc. and affiliates.
 *
 * This source code is licensed under the MIT license found in the
 * LICENSE file in the root directory of this source tree.
 *
 * @format
 */

'use strict';

/* eslint-env node */

const path = require('path');
const createCacheKeyFunction =
    require('@jest/create-cache-key-function').default;

module.exports = {
    // Mocks asset requires to return the filename. Makes it possible to test that
    // the correct images are loaded for components. Essentially
    // require('img1.png') becomes `Object { "testUri": 'path/to/img1.png' }` in
    // the Jest snapshot.
    process: (_, filename) => ({
        code: `module.exports = {
      testUri:
        ${JSON.stringify(
            path.relative(__dirname, filename).replace(/\\/g, '/'),
        )}
    };`,
    }),
    getCacheKey: createCacheKeyFunction([__filename]),
};