Function run

test/WebpackCli.longtest.js:55–91

(args)

 * @returns {Promise<{ config: CapturedConfig, exitCode: number, errors: string }>} result
 */
const run = async (args) => {
	const dir = fs.mkdtempSync(path.join(os.tmpdir(), "wp-cli-"));
	const capture = path.join(dir, "config.json");
	process.env.WEBPACK_PACKAGE = MOCK_WEBPACK;
	process.env.WEBPACK_CLI_TEST_CAPTURE = capture;
	jest.resetModules();

	/** @type {EXPECTED_ANY} */
	const WebpackCLI = require("webpack-cli").default;

	const exitSpy = jest.spyOn(process, "exit").mockImplementation((code) => {
		throw new Error(`__exit__ ${code}`);
	});
	/** @type {string[]} */
	const errors = [];
	const errorSpy = jest
		.spyOn(console, "error")
		.mockImplementation((message) => errors.push(`${message}`));
	let exitCode = 0;
	try {
		await new WebpackCLI().run(["node", "webpack", "build", ...args]);
	} catch (error) {
		const match = /__exit__ (\d+)/.exec(/** @type {Error} */ (error).message);
		if (!match) throw error;
		exitCode = Number(match[1]);
	} finally {
		exitSpy.mockRestore();
		errorSpy.mockRestore();
		delete process.env.WEBPACK_PACKAGE;
		delete process.env.WEBPACK_CLI_TEST_CAPTURE;
	}
	const config = fs.existsSync(capture)
		? JSON.parse(fs.readFileSync(capture, "utf8"))
		: undefined;
	fs.rmSync(dir, { recursive: true, force: true });
	return { config, exitCode, errors: errors.join("\n") };
};

describe("WebpackCLI integration", () => {
	// webpack-cli requires a newer Node than webpack itself; skip on older versions.