jest/e2e/transform/async-transformer/my-transform.cjs

38 lines
933 B
JavaScript

/**
* 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.
*/
'use strict';
const {promisify} = require('util');
const wait = promisify(setTimeout);
const fileToTransform = require.resolve('./module-under-test');
const fileToTransform2 = require.resolve('./some-symbol');
module.exports = {
async processAsync(src, filepath) {
if (filepath !== fileToTransform && filepath !== fileToTransform2) {
throw new Error(`Unsupported filepath ${filepath}`);
}
if (filepath === fileToTransform2) {
// we want to wait to ensure the module cache is populated with the correct module
await wait(100);
return {code: src};
}
return {
code: src.replace(
"export default 'It was not transformed!!'",
'export default 42',
),
};
},
};