47 lines
1.3 KiB
JavaScript
47 lines
1.3 KiB
JavaScript
// @flow
|
|
import loadConfig, { type InputOptions } from "./config";
|
|
import {
|
|
runAsync,
|
|
type FileResult,
|
|
type FileResultCallback,
|
|
} from "./transformation";
|
|
|
|
import transformSync from "./transform-sync";
|
|
|
|
type Transform = {
|
|
(code: string, callback: FileResultCallback): void,
|
|
(code: string, opts: ?InputOptions, callback: FileResultCallback): void,
|
|
|
|
// Here for backward-compatibility. Ideally use ".transformSync" if you want
|
|
// a synchronous API.
|
|
(code: string, opts: ?InputOptions): FileResult | null,
|
|
};
|
|
|
|
export default ((function transform(code, opts, callback) {
|
|
if (typeof opts === "function") {
|
|
opts = undefined;
|
|
callback = opts;
|
|
}
|
|
|
|
// For backward-compat with Babel 6, we allow sync transformation when
|
|
// no callback is given. Will be dropped in some future Babel major version.
|
|
if (callback === undefined) return transformSync(code, opts);
|
|
|
|
// Reassign to keep Flowtype happy.
|
|
const cb = callback;
|
|
|
|
// Just delaying the transform one tick for now to simulate async behavior
|
|
// but more async logic may land here eventually.
|
|
process.nextTick(() => {
|
|
let cfg;
|
|
try {
|
|
cfg = loadConfig(opts);
|
|
if (cfg === null) return cb(null, null);
|
|
} catch (err) {
|
|
return cb(err);
|
|
}
|
|
|
|
runAsync(cfg, code, null, cb);
|
|
});
|
|
}: Function): Transform);
|