forked from mochajs/mocha
/
esm-utils.js
28 lines (26 loc) · 902 Bytes
/
esm-utils.js
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const path = require('path');
exports.requireOrImport = async file => {
if (path.extname(file) === '.mjs') {
return import(file);
}
// This is currently the only known way of figuring out whether a file is CJS or ESM.
// If Node.js or the community establish a better procedure for that, we can fix this code.
// Another option here would be to always use `import()`, as this also supports CJS, but I would be
// wary of using it for _all_ existing test files, till ESM is fully stable.
try {
return require(file);
} catch (err) {
if (err.code === 'ERR_REQUIRE_ESM') {
return import(file);
} else {
throw err;
}
}
};
exports.loadFilesAsync = async (files, preLoadFunc, postLoadFunc) => {
for (const file of files) {
preLoadFunc(file);
const result = await exports.requireOrImport(path.resolve(file));
postLoadFunc(file, result);
}
};