42 lines
No EOL
1.2 KiB
JavaScript
Executable file
42 lines
No EOL
1.2 KiB
JavaScript
Executable file
const babel = require("@babel/core");
|
|
const {
|
|
promisify
|
|
} = require("util");
|
|
const LoaderError = require("./Error");
|
|
const transform = promisify(babel.transform);
|
|
module.exports = async function (source, options) {
|
|
let result;
|
|
try {
|
|
result = await transform(source, options);
|
|
} catch (err) {
|
|
throw err.message && err.codeFrame ? new LoaderError(err) : err;
|
|
}
|
|
if (!result) return null;
|
|
|
|
// We don't return the full result here because some entries are not
|
|
// really serializable. For a full list of properties see here:
|
|
// https://github.com/babel/babel/blob/main/packages/babel-core/src/transformation/index.js
|
|
// For discussion on this topic see here:
|
|
// https://github.com/babel/babel-loader/pull/629
|
|
const {
|
|
ast,
|
|
code,
|
|
map,
|
|
metadata,
|
|
sourceType,
|
|
externalDependencies
|
|
} = result;
|
|
if (map && (!map.sourcesContent || !map.sourcesContent.length)) {
|
|
map.sourcesContent = [source];
|
|
}
|
|
return {
|
|
ast,
|
|
code,
|
|
map,
|
|
metadata,
|
|
sourceType,
|
|
// Convert it from a Set to an Array to make it JSON-serializable.
|
|
externalDependencies: Array.from(externalDependencies || [])
|
|
};
|
|
};
|
|
module.exports.version = babel.version; |