82 lines
2.4 KiB
JavaScript
82 lines
2.4 KiB
JavaScript
import cp from "child_process";
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import util from "util";
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import path from "path";
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import { fileURLToPath } from "url";
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import { createRequire } from "module";
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import * as babel from "../../lib/index.js";
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const require = createRequire(import.meta.url);
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const dirname = path.dirname(fileURLToPath(import.meta.url));
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// "minNodeVersion": "10.0.0" <-- For Ctrl+F when dropping node 10
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const nodeSupportsESM = parseInt(process.versions.node) >= 12;
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const isWindows = process.platform === "win32";
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export const supportsESM = nodeSupportsESM && !isWindows;
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export const isMJS = file => path.extname(file) === ".mjs";
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export const itESM = supportsESM ? it : it.skip;
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export function skipUnsupportedESM(esm, name) {
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if (esm && !nodeSupportsESM) {
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console.warn(
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`Skipping "${name}" because native ECMAScript modules are not supported.`,
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);
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return true;
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}
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// This can be removed when loadOptionsAsyncInSpawedProcess is removed.
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if (esm && isWindows) {
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console.warn(
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`Skipping "${name}" because the ESM runner cannot be spawned on Windows.`,
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);
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return true;
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}
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return false;
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}
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export function loadOptionsAsync({ filename, cwd = dirname }, mjs) {
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if (mjs) {
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// import() crashes with jest
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return spawn("load-options-async", filename, cwd);
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}
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return babel.loadOptionsAsync({ filename, cwd });
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}
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export function spawnTransformAsync() {
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// import() crashes with jest
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return spawn("compile-async");
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}
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export function spawnTransformSync() {
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// import() crashes with jest
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return spawn("compile-sync");
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}
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// !!!! hack is coming !!!!
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// Remove this function when https://github.com/nodejs/node/issues/35889 is resolved.
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// Jest supports dynamic import(), but Node.js segfaults when using it in our tests.
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async function spawn(runner, filename, cwd = process.cwd()) {
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const { stdout, stderr } = await util.promisify(cp.execFile)(
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require.resolve(`../fixtures/babel-${runner}.mjs`),
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// pass `cwd` as params as `process.cwd()` will normalize `cwd` on macOS
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[filename, cwd],
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{ cwd, env: process.env },
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);
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const EXPERIMENTAL_WARNING =
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/\(node:\d+\) ExperimentalWarning: The ESM module loader is experimental\./;
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if (stderr.replace(EXPERIMENTAL_WARNING, "").trim()) {
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throw new Error(
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`error is thrown in babel-${runner}.mjs: stdout\n` +
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stdout +
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"\nstderr:\n" +
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stderr,
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);
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}
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return JSON.parse(stdout);
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}
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