fce92fa1ad
* Switch to pirates for babel-register. Pirates is a simple module that enables easy require hooking. It makes sure that your require hook works properly. It also makes the implimentation of babel-register a lot simpler. For more on pirates: http://ariporad.link/piratesjs * Use modified version of pirates. * Switch back to stable version * Initial tests for babel-register * Fix tests to work in new test env * Fix for new ignore behaviour * Update pirates to 3.0.1
122 lines
3.0 KiB
JavaScript
122 lines
3.0 KiB
JavaScript
import deepClone from "lodash/cloneDeep";
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import sourceMapSupport from "source-map-support";
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import * as registerCache from "./cache";
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import escapeRegExp from "lodash/escapeRegExp";
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import * as babel from "babel-core";
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import { OptionManager, DEFAULT_EXTENSIONS } from "babel-core";
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import { addHook } from "pirates";
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import fs from "fs";
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import path from "path";
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const maps = {};
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const transformOpts = {};
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let piratesRevert = null;
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sourceMapSupport.install({
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handleUncaughtExceptions: false,
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environment: "node",
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retrieveSourceMap(source) {
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const map = maps && maps[source];
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if (map) {
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return {
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url: null,
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map: map,
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};
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} else {
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return null;
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}
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},
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});
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registerCache.load();
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let cache = registerCache.get();
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function mtime(filename) {
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return +fs.statSync(filename).mtime;
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}
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function compile(code, filename) {
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// merge in base options and resolve all the plugins and presets relative to this file
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const opts = new OptionManager().init(Object.assign(
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{ sourceRoot: path.dirname(filename) }, // sourceRoot can be overwritten
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deepClone(transformOpts),
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{ filename }
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));
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// Bail out ASAP if the file has been ignored.
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if (opts === null) return code;
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let cacheKey = `${JSON.stringify(opts)}:${babel.version}`;
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const env = babel.getEnv(false);
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if (env) cacheKey += `:${env}`;
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if (cache) {
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const cached = cache[cacheKey];
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if (cached && cached.mtime === mtime(filename)) {
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return cached.code;
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}
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}
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const result = babel.transform(code, Object.assign(opts, {
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// Do not process config files since has already been done with the OptionManager
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// calls above and would introduce duplicates.
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babelrc: false,
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sourceMaps: "both",
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ast: false,
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}));
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if (cache) {
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cache[cacheKey] = result;
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result.mtime = mtime(filename);
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}
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maps[filename] = result.map;
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return result.code;
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}
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function hookExtensions(exts) {
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if (piratesRevert) piratesRevert();
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piratesRevert = addHook(compile, { exts, ignoreNodeModules: false });
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}
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export function revert() {
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if (piratesRevert) piratesRevert();
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delete require.cache[require.resolve(__filename)];
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}
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register({
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extensions: DEFAULT_EXTENSIONS,
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});
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export default function register(opts?: Object = {}) {
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if (opts.extensions) hookExtensions(opts.extensions);
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if (opts.cache === false) cache = null;
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delete opts.extensions;
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delete opts.cache;
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Object.assign(transformOpts, opts);
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if (!transformOpts.ignore && !transformOpts.only) {
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transformOpts.ignore = [
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// Ignore any node_modules content outside the current working directory.
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new RegExp(
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"^(?!" + escapeRegExp(process.cwd()) + ").*" +
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escapeRegExp(path.sep + "node_modules" + path.sep)
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, "i"),
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// Ignore any node_modules inside the current working directory.
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new RegExp(
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"^" +
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escapeRegExp(process.cwd()) +
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"(?:" + path.sep + ".*)?" +
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escapeRegExp(path.sep + "node_modules" + path.sep)
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, "i"),
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];
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}
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}
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