forked from jestjs/jest
/
requireOrImportModule.ts
41 lines (36 loc) · 1.18 KB
/
requireOrImportModule.ts
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
/**
* Copyright (c) Facebook, Inc. and its affiliates. All Rights Reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/
import {isAbsolute} from 'path';
import {pathToFileURL} from 'url';
import type {Config} from '@jest/types';
import interopRequireDefault from './interopRequireDefault';
export default async function requireOrImportModule<T>(
filePath: Config.Path,
): Promise<T> {
let module: T;
if (!isAbsolute(filePath) && filePath[0] === '.') {
throw new Error(`Jest: requireOrImportModule path must be absolute`);
}
try {
module = interopRequireDefault(require(filePath)).default;
} catch (error) {
if (error.code === 'ERR_REQUIRE_ESM') {
const configUrl = pathToFileURL(filePath);
// node `import()` supports URL, but TypeScript doesn't know that
const importedConfig = await import(configUrl.href);
if (!importedConfig.default) {
throw new Error(
`Jest: Failed to load ESM at ${filePath} - did you use a default export?`,
);
}
module = importedConfig.default;
} else {
throw error;
}
}
return module;
}