Pass args as an array

scripts/prettier/index.js

@@ -13,7 +13,7 @@
 const chalk = require('chalk');
 const glob = require('glob');
 const path = require('path');
-const runCommand = require('./runCommand');
+const execFileSync = require('child_process').execFileSync;
 
 const shouldWrite = process.argv[2] === 'write';
 const isWindows = process.platform === 'win32';
@@ -36,6 +36,12 @@ const config = {
   },
 };
 
+function exec(command, args) {
+  console.log('> ' + [command].concat(args).join(' '));
+  var options = {};
+  return execFileSync(command, args, options).toString();
+}
+
 Object.keys(config).forEach(key => {
   const patterns = config[key].patterns;
   const options = config[key].options;
@@ -49,14 +55,14 @@ Object.keys(config).forEach(key => {
   const args = Object.keys(defaultOptions).map(
     k => `--${k}=${(options && options[k]) || defaultOptions[k]}`
   );
-  args.push(`--${shouldWrite ? 'write' : 'l'} {${files.join(' ')}}`);
+  args.push(`--${shouldWrite ? 'write' : 'l'}`);
 
   try {
-    runCommand(prettierCmd, args.join(' '), path.resolve(__dirname, '../..'));
+    exec(prettierCmd, [...args, ...files]);
   } catch (e) {
-    console.log(e);
     if (!shouldWrite) {
       console.log(
+        '\n' +
         chalk.red(
           `  This project uses prettier to format all JavaScript code.\n`
         ) +

scripts/prettier/runCommand.js

@@ -1,40 +0,0 @@
-/**
- * Copyright (c) 2014, Facebook, Inc. All rights reserved.
- *
- * This source code is licensed under the BSD-style license found in the
- * LICENSE file in the root directory of this source tree. An additional grant
- * of patent rights can be found in the PATENTS file in the same directory.
- */
-'use strict';
-
-const chalk = require('chalk');
-const spawn = require('child_process').spawnSync;
-
-module.exports = function runCommand(cmd, args, cwd) {
-  if (!cwd) {
-    cwd = __dirname;
-  }
-
-  const callArgs = args.split(' ');
-  console.log(
-    chalk.dim('$ cd ' + cwd) +
-      '\n' +
-      chalk.dim(
-        '  $ ' +
-          cmd +
-          ' ' +
-          (args.length > 1000 ? args.slice(0, 1000) + '...' : args)
-      ) +
-      '\n'
-  );
-  const result = spawn(cmd, callArgs, {
-    cwd,
-    stdio: 'inherit',
-  });
-  if (result.error || result.status !== 0) {
-    const message = 'Error running command.';
-    const error = new Error(message);
-    error.stack = message;
-    throw error;
-  }
-};