db2a9fc96e
Previously, if the optional `opts` parameter wasn't passed, the _intent_ was to move the function it held into the `callback` parameter and null out the `opts` param - but instead, it was nulling both.
85 lines
2.1 KiB
JavaScript
85 lines
2.1 KiB
JavaScript
// @flow
|
|
|
|
import loadConfig, { type InputOptions } from "./config";
|
|
import normalizeFile from "./transformation/normalize-file";
|
|
import normalizeOptions from "./transformation/normalize-opts";
|
|
|
|
type AstRoot = BabelNodeFile | BabelNodeProgram;
|
|
|
|
export type ParseResult = AstRoot;
|
|
|
|
export type FileParseCallback = {
|
|
(Error, null): any,
|
|
(null, ParseResult | null): any,
|
|
};
|
|
|
|
type Parse = {
|
|
(code: string, callback: FileParseCallback): void,
|
|
(code: string, opts: ?InputOptions, callback: FileParseCallback): void,
|
|
|
|
// Here for backward-compatibility. Ideally use ".parseSync" if you want
|
|
// a synchronous API.
|
|
(code: string, opts: ?InputOptions): ParseResult | null,
|
|
};
|
|
|
|
export const parse: Parse = (function parse(code, opts, callback) {
|
|
if (typeof opts === "function") {
|
|
callback = opts;
|
|
opts = undefined;
|
|
}
|
|
|
|
// For backward-compat with Babel 7's early betas, we allow sync parsing when
|
|
// no callback is given. Will be dropped in some future Babel major version.
|
|
if (callback === undefined) return parseSync(code, opts);
|
|
|
|
const config = loadConfig(opts);
|
|
|
|
if (config === null) {
|
|
return null;
|
|
}
|
|
|
|
// 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 ast = null;
|
|
try {
|
|
const cfg = loadConfig(opts);
|
|
if (cfg === null) return cb(null, null);
|
|
|
|
ast = normalizeFile(cfg.passes, normalizeOptions(cfg), code).ast;
|
|
} catch (err) {
|
|
return cb(err);
|
|
}
|
|
|
|
cb(null, ast);
|
|
});
|
|
}: Function);
|
|
|
|
export function parseSync(
|
|
code: string,
|
|
opts?: InputOptions,
|
|
): ParseResult | null {
|
|
const config = loadConfig(opts);
|
|
|
|
if (config === null) {
|
|
return null;
|
|
}
|
|
|
|
return normalizeFile(config.passes, normalizeOptions(config), code).ast;
|
|
}
|
|
|
|
export function parseAsync(
|
|
code: string,
|
|
opts?: InputOptions,
|
|
): Promise<ParseResult | null> {
|
|
return new Promise((res, rej) => {
|
|
parse(code, opts, (err, result) => {
|
|
if (err == null) res(result);
|
|
else rej(err);
|
|
});
|
|
});
|
|
}
|