51 lines
1.4 KiB
TypeScript
51 lines
1.4 KiB
TypeScript
import gensync from "gensync";
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import loadConfig from "./config";
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import type { InputOptions } from "./config";
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import parser from "./parser";
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import type { ParseResult } from "./parser";
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import normalizeOptions from "./transformation/normalize-opts";
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type FileParseCallback = {
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(err: Error, ast: null): any;
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(err: null, ast: ParseResult | null): any;
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};
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type Parse = {
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(code: string, callback: FileParseCallback): void;
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(
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code: string,
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opts: InputOptions | undefined | null,
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callback: FileParseCallback,
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): void;
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(code: string, opts?: InputOptions | null): ParseResult | null;
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};
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const parseRunner = gensync<
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(code: string, opts: InputOptions | undefined | null) => ParseResult | null
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>(function* parse(code, opts) {
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const config = yield* loadConfig(opts);
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if (config === null) {
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return null;
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}
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return yield* parser(config.passes, normalizeOptions(config), code);
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});
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export const parse: Parse = function parse(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 7's early betas, we allow sync parsing 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 parseRunner.sync(code, opts);
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parseRunner.errback(code, opts, callback);
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};
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export const parseSync = parseRunner.sync;
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export const parseAsync = parseRunner.async;
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