Fix.

node_modules/execa/index.js

@@ -0,0 +1,361 @@
+'use strict';
+const path = require('path');
+const childProcess = require('child_process');
+const crossSpawn = require('cross-spawn');
+const stripEof = require('strip-eof');
+const npmRunPath = require('npm-run-path');
+const isStream = require('is-stream');
+const _getStream = require('get-stream');
+const pFinally = require('p-finally');
+const onExit = require('signal-exit');
+const errname = require('./lib/errname');
+const stdio = require('./lib/stdio');
+
+const TEN_MEGABYTES = 1000 * 1000 * 10;
+
+function handleArgs(cmd, args, opts) {
+	let parsed;
+
+	opts = Object.assign({
+		extendEnv: true,
+		env: {}
+	}, opts);
+
+	if (opts.extendEnv) {
+		opts.env = Object.assign({}, process.env, opts.env);
+	}
+
+	if (opts.__winShell === true) {
+		delete opts.__winShell;
+		parsed = {
+			command: cmd,
+			args,
+			options: opts,
+			file: cmd,
+			original: {
+				cmd,
+				args
+			}
+		};
+	} else {
+		parsed = crossSpawn._parse(cmd, args, opts);
+	}
+
+	opts = Object.assign({
+		maxBuffer: TEN_MEGABYTES,
+		buffer: true,
+		stripEof: true,
+		preferLocal: true,
+		localDir: parsed.options.cwd || process.cwd(),
+		encoding: 'utf8',
+		reject: true,
+		cleanup: true
+	}, parsed.options);
+
+	opts.stdio = stdio(opts);
+
+	if (opts.preferLocal) {
+		opts.env = npmRunPath.env(Object.assign({}, opts, {cwd: opts.localDir}));
+	}
+
+	if (opts.detached) {
+		// #115
+		opts.cleanup = false;
+	}
+
+	if (process.platform === 'win32' && path.basename(parsed.command) === 'cmd.exe') {
+		// #116
+		parsed.args.unshift('/q');
+	}
+
+	return {
+		cmd: parsed.command,
+		args: parsed.args,
+		opts,
+		parsed
+	};
+}
+
+function handleInput(spawned, input) {
+	if (input === null || input === undefined) {
+		return;
+	}
+
+	if (isStream(input)) {
+		input.pipe(spawned.stdin);
+	} else {
+		spawned.stdin.end(input);
+	}
+}
+
+function handleOutput(opts, val) {
+	if (val && opts.stripEof) {
+		val = stripEof(val);
+	}
+
+	return val;
+}
+
+function handleShell(fn, cmd, opts) {
+	let file = '/bin/sh';
+	let args = ['-c', cmd];
+
+	opts = Object.assign({}, opts);
+
+	if (process.platform === 'win32') {
+		opts.__winShell = true;
+		file = process.env.comspec || 'cmd.exe';
+		args = ['/s', '/c', `"${cmd}"`];
+		opts.windowsVerbatimArguments = true;
+	}
+
+	if (opts.shell) {
+		file = opts.shell;
+		delete opts.shell;
+	}
+
+	return fn(file, args, opts);
+}
+
+function getStream(process, stream, {encoding, buffer, maxBuffer}) {
+	if (!process[stream]) {
+		return null;
+	}
+
+	let ret;
+
+	if (!buffer) {
+		// TODO: Use `ret = util.promisify(stream.finished)(process[stream]);` when targeting Node.js 10
+		ret = new Promise((resolve, reject) => {
+			process[stream]
+				.once('end', resolve)
+				.once('error', reject);
+		});
+	} else if (encoding) {
+		ret = _getStream(process[stream], {
+			encoding,
+			maxBuffer
+		});
+	} else {
+		ret = _getStream.buffer(process[stream], {maxBuffer});
+	}
+
+	return ret.catch(err => {
+		err.stream = stream;
+		err.message = `${stream} ${err.message}`;
+		throw err;
+	});
+}
+
+function makeError(result, options) {
+	const {stdout, stderr} = result;
+
+	let err = result.error;
+	const {code, signal} = result;
+
+	const {parsed, joinedCmd} = options;
+	const timedOut = options.timedOut || false;
+
+	if (!err) {
+		let output = '';
+
+		if (Array.isArray(parsed.opts.stdio)) {
+			if (parsed.opts.stdio[2] !== 'inherit') {
+				output += output.length > 0 ? stderr : `\n${stderr}`;
+			}
+
+			if (parsed.opts.stdio[1] !== 'inherit') {
+				output += `\n${stdout}`;
+			}
+		} else if (parsed.opts.stdio !== 'inherit') {
+			output = `\n${stderr}${stdout}`;
+		}
+
+		err = new Error(`Command failed: ${joinedCmd}${output}`);
+		err.code = code < 0 ? errname(code) : code;
+	}
+
+	err.stdout = stdout;
+	err.stderr = stderr;
+	err.failed = true;
+	err.signal = signal || null;
+	err.cmd = joinedCmd;
+	err.timedOut = timedOut;
+
+	return err;
+}
+
+function joinCmd(cmd, args) {
+	let joinedCmd = cmd;
+
+	if (Array.isArray(args) && args.length > 0) {
+		joinedCmd += ' ' + args.join(' ');
+	}
+
+	return joinedCmd;
+}
+
+module.exports = (cmd, args, opts) => {
+	const parsed = handleArgs(cmd, args, opts);
+	const {encoding, buffer, maxBuffer} = parsed.opts;
+	const joinedCmd = joinCmd(cmd, args);
+
+	let spawned;
+	try {
+		spawned = childProcess.spawn(parsed.cmd, parsed.args, parsed.opts);
+	} catch (err) {
+		return Promise.reject(err);
+	}
+
+	let removeExitHandler;
+	if (parsed.opts.cleanup) {
+		removeExitHandler = onExit(() => {
+			spawned.kill();
+		});
+	}
+
+	let timeoutId = null;
+	let timedOut = false;
+
+	const cleanup = () => {
+		if (timeoutId) {
+			clearTimeout(timeoutId);
+			timeoutId = null;
+		}
+
+		if (removeExitHandler) {
+			removeExitHandler();
+		}
+	};
+
+	if (parsed.opts.timeout > 0) {
+		timeoutId = setTimeout(() => {
+			timeoutId = null;
+			timedOut = true;
+			spawned.kill(parsed.opts.killSignal);
+		}, parsed.opts.timeout);
+	}
+
+	const processDone = new Promise(resolve => {
+		spawned.on('exit', (code, signal) => {
+			cleanup();
+			resolve({code, signal});
+		});
+
+		spawned.on('error', err => {
+			cleanup();
+			resolve({error: err});
+		});
+
+		if (spawned.stdin) {
+			spawned.stdin.on('error', err => {
+				cleanup();
+				resolve({error: err});
+			});
+		}
+	});
+
+	function destroy() {
+		if (spawned.stdout) {
+			spawned.stdout.destroy();
+		}
+
+		if (spawned.stderr) {
+			spawned.stderr.destroy();
+		}
+	}
+
+	const handlePromise = () => pFinally(Promise.all([
+		processDone,
+		getStream(spawned, 'stdout', {encoding, buffer, maxBuffer}),
+		getStream(spawned, 'stderr', {encoding, buffer, maxBuffer})
+	]).then(arr => {
+		const result = arr[0];
+		result.stdout = arr[1];
+		result.stderr = arr[2];
+
+		if (result.error || result.code !== 0 || result.signal !== null) {
+			const err = makeError(result, {
+				joinedCmd,
+				parsed,
+				timedOut
+			});
+
+			// TODO: missing some timeout logic for killed
+			// https://github.com/nodejs/node/blob/master/lib/child_process.js#L203
+			// err.killed = spawned.killed || killed;
+			err.killed = err.killed || spawned.killed;
+
+			if (!parsed.opts.reject) {
+				return err;
+			}
+
+			throw err;
+		}
+
+		return {
+			stdout: handleOutput(parsed.opts, result.stdout),
+			stderr: handleOutput(parsed.opts, result.stderr),
+			code: 0,
+			failed: false,
+			killed: false,
+			signal: null,
+			cmd: joinedCmd,
+			timedOut: false
+		};
+	}), destroy);
+
+	crossSpawn._enoent.hookChildProcess(spawned, parsed.parsed);
+
+	handleInput(spawned, parsed.opts.input);
+
+	spawned.then = (onfulfilled, onrejected) => handlePromise().then(onfulfilled, onrejected);
+	spawned.catch = onrejected => handlePromise().catch(onrejected);
+
+	return spawned;
+};
+
+// TODO: set `stderr: 'ignore'` when that option is implemented
+module.exports.stdout = (...args) => module.exports(...args).then(x => x.stdout);
+
+// TODO: set `stdout: 'ignore'` when that option is implemented
+module.exports.stderr = (...args) => module.exports(...args).then(x => x.stderr);
+
+module.exports.shell = (cmd, opts) => handleShell(module.exports, cmd, opts);
+
+module.exports.sync = (cmd, args, opts) => {
+	const parsed = handleArgs(cmd, args, opts);
+	const joinedCmd = joinCmd(cmd, args);
+
+	if (isStream(parsed.opts.input)) {
+		throw new TypeError('The `input` option cannot be a stream in sync mode');
+	}
+
+	const result = childProcess.spawnSync(parsed.cmd, parsed.args, parsed.opts);
+	result.code = result.status;
+
+	if (result.error || result.status !== 0 || result.signal !== null) {
+		const err = makeError(result, {
+			joinedCmd,
+			parsed
+		});
+
+		if (!parsed.opts.reject) {
+			return err;
+		}
+
+		throw err;
+	}
+
+	return {
+		stdout: handleOutput(parsed.opts, result.stdout),
+		stderr: handleOutput(parsed.opts, result.stderr),
+		code: 0,
+		failed: false,
+		signal: null,
+		cmd: joinedCmd,
+		timedOut: false
+	};
+};
+
+module.exports.shellSync = (cmd, opts) => handleShell(module.exports.sync, cmd, opts);