43 lines
1.3 KiB
TypeScript
43 lines
1.3 KiB
TypeScript
import gensync from "gensync";
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import loadConfig from "./config";
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import type { InputOptions, ResolvedConfig } from "./config";
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import { run } from "./transformation";
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import type { FileResult, FileResultCallback } from "./transformation";
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type Transform = {
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(code: string, callback: FileResultCallback): void;
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(
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code: string,
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opts: InputOptions | undefined | null,
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callback: FileResultCallback,
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): void;
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(code: string, opts?: InputOptions | null): FileResult | null;
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};
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const transformRunner = gensync<
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(code: string, opts?: InputOptions) => FileResult | null
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>(function* transform(code, opts) {
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const config: ResolvedConfig | null = yield* loadConfig(opts);
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if (config === null) return null;
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return yield* run(config, code);
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});
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export const transform: Transform = function transform(code, opts?, callback?) {
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if (typeof opts === "function") {
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callback = opts;
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opts = undefined;
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}
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// For backward-compat with Babel 6, we allow sync transformation when
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// no callback is given. Will be dropped in some future Babel major version.
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if (callback === undefined) return transformRunner.sync(code, opts);
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transformRunner.errback(code, opts, callback);
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};
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export const transformSync = transformRunner.sync;
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export const transformAsync = transformRunner.async;
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