@react-native-community/cli-tools/src/launchEditor.ts

/**
 * Copyright (c) Facebook, Inc. and its affiliates.
 *
 * This source code is licensed under the MIT license found in the
 * LICENSE file in the root directory of this source tree.
 *
 * @format
 */

import chalk from 'chalk';
import fs from 'fs';
import path from 'path';
import {execSync, spawn, ChildProcess} from 'child_process';
// @ts-ignore @types not installed
import shellQuote from 'shell-quote';
import logger from './logger';

function isTerminalEditor(editor: string) {
  switch (editor) {
    case 'vim':
    case 'emacs':
    case 'nano':
      return true;
    default:
      return false;
  }
}

// Map from full process name to binary that starts the process
// We can't just re-use full process name, because it will spawn a new instance
// of the app every time
const COMMON_EDITORS: Record<string, string> = {
  '/Applications/Atom.app/Contents/MacOS/Atom': 'atom',
  '/Applications/Atom Beta.app/Contents/MacOS/Atom Beta':
    '/Applications/Atom Beta.app/Contents/MacOS/Atom Beta',
  '/Applications/IntelliJ IDEA.app/Contents/MacOS/idea': 'idea',
  '/Applications/Sublime Text.app/Contents/MacOS/Sublime Text':
    '/Applications/Sublime Text.app/Contents/SharedSupport/bin/subl',
  '/Applications/Sublime Text 2.app/Contents/MacOS/Sublime Text 2':
    '/Applications/Sublime Text 2.app/Contents/SharedSupport/bin/subl',
  '/Applications/Visual Studio Code.app/Contents/MacOS/Electron': 'code',
  '/Applications/WebStorm.app/Contents/MacOS/webstorm': 'webstorm',
};

// Map of process image name used to identify already running instances of the editor
// And an editor id which is used to determine which arguments to add to the commandline
const COMMON_WINDOWS_EDITORS: Record<string, string> = {
  'Code.exe': 'code',
  'sublime_text.exe': 'subl',
  'devenv.exe': 'devenv',
  'notepad.exe': 'notepad',
};

// Transpiled version of: /^([a-zA-Z]+:)?[\p{L}0-9@/.\-_\\]+$/u
// Non-transpiled version requires support for Unicode property regex. Allows
// alphanumeric characters, periods, dashes, at signs, slashes, and underscores, with an optional drive prefix
const WINDOWS_FILE_NAME_WHITELIST = /^([a-zA-Z]+:)?(?:[\x2D-9@-Z\\_a-z\xAA\xB5\xBA\xC0-\xD6\xD8-\xF6\xF8-\u02C1\u02C6-\u02D1\u02E0-\u02E4\u02EC\u02EE\u0370-\u0374\u0376\u0377\u037A-\u037D\u037F\u0386\u0388-\u038A\u038C\u038E-\u03A1\u03A3-\u03F5\u03F7-\u0481\u048A-\u052F\u0531-\u0556\u0559\u0560-\u0588\u05D0-\u05EA\u05EF-\u05F2\u0620-\u064A\u066E\u066F\u0671-\u06D3\u06D5\u06E5\u06E6\u06EE\u06EF\u06FA-\u06FC\u06FF\u0710\u0712-\u072F\u074D-\u07A5\u07B1\u07CA-\u07EA\u07F4\u07F5\u07FA\u0800-\u0815\u081A\u0824\u0828\u0840-\u0858\u0860-\u086A\u08A0-\u08B4\u08B6-\u08BD\u0904-\u0939\u093D\u0950\u0958-\u0961\u0971-\u0980\u0985-\u098C\u098F\u0990\u0993-\u09A8\u09AA-\u09B0\u09B2\u09B6-\u09B9\u09BD\u09CE\u09DC\u09DD\u09DF-\u09E1\u09F0\u09F1\u09FC\u0A05-\u0A0A\u0A0F\u0A10\u0A13-\u0A28\u0A2A-\u0A30\u0A32\u0A33\u0A35\u0A36\u0A38\u0A39\u0A59-\u0A5C\u0A5E\u0A72-\u0A74\u0A85-\u0A8D\u0A8F-\u0A91\u0A93-\u0AA8\u0AAA-\u0AB0\u0AB2\u0AB3\u0AB5-\u0AB9\u0ABD\u0AD0\u0AE0\u0AE1\u0AF9\u0B05-\u0B0C\u0B0F\u0B10\u0B13-\u0B28\u0B2A-\u0B30\u0B32\u0B33\u0B35-\u0B39\u0B3D\u0B5C\u0B5D\u0B5F-\u0B61\u0B71\u0B83\u0B85-\u0B8A\u0B8E-\u0B90\u0B92-\u0B95\u0B99\u0B9A\u0B9C\u0B9E\u0B9F\u0BA3\u0BA4\u0BA8-\u0BAA\u0BAE-\u0BB9\u0BD0\u0C05-\u0C0C\u0C0E-\u0C10\u0C12-\u0C28\u0C2A-\u0C39\u0C3D\u0C58-\u0C5A\u0C60\u0C61\u0C80\u0C85-\u0C8C\u0C8E-\u0C90\u0C92-\u0CA8\u0CAA-\u0CB3\u0CB5-\u0CB9\u0CBD\u0CDE\u0CE0\u0CE1\u0CF1\u0CF2\u0D05-\u0D0C\u0D0E-\u0D10\u0D12-\u0D3A\u0D3D\u0D4E\u0D54-\u0D56\u0D5F-\u0D61\u0D7A-\u0D7F\u0D85-\u0D96\u0D9A-\u0DB1\u0DB3-\u0DBB\u0DBD\u0DC0-\u0DC6\u0E01-\u0E30\u0E32\u0E33\u0E40-\u0E46\u0E81\u0E82\u0E84\u0E87\u0E88\u0E8A\u0E8D\u0E94-\u0E97\u0E99-\u0E9F\u0EA1-\u0EA3\u0EA5\u0EA7\u0EAA\u0EAB\u0EAD-\u0EB0\u0EB2\u0EB3\u0EBD\u0EC0-\u0EC4\u0EC6\u0EDC-\u0EDF\u0F00\u0F40-\u0F47\u0F49-\u0F6C\u0F88-\u0F8C\u1000-\u102A\u103F\u1050-\u1055\u105A-\u105D\u1061\u1065\u1066\u106E-\u1070\u1075-\u1081\u108E\u10A0-\u10C5\u10C7\u10CD\u10D0-\u10FA\u10FC-\u1248\u124A-\u124D\u1250-\u1256\u1258\u125A-\u125D\u1260-\u1288\u128A-\u128D\u1290-\u12B0\u12B2-\u12B5\u12B8-\u12BE\u12C0\u12C2-\u12C5\u12C8-\u12D6\u12D8-\u1310\u1312-\u1315\u1318-\u135A\u1380-\u138F\u13A0-\u13F5\u13F8-\u13FD\u1401-\u166C\u166F-\u167F\u1681-\u169A\u16A0-\u16EA\u16F1-\u16F8\u1700-\u170C\u170E-\u1711\u1720-\u1731\u1740-\u1751\u1760-\u176C\u176E-\u1770\u1780-\u17B3\u17D7\u17DC\u1820-\u1878\u1880-\u1884\u1887-\u18A8\u18AA\u18B0-\u18F5\u1900-\u191E\u1950-\u196D\u1970-\u1974\u1980-\u19AB\u19B0-\u19C9\u1A00-\u1A16\u1A20-\u1A54\u1AA7\u1B05-\u1B33\u1B45-\u1B4B\u1B83-\u1BA0\u1BAE\u1BAF\u1BBA-\u1BE5\u1C00-\u1C23\u1C4D-\u1C4F\u1C5A-\u1C7D\u1C80-\u1C88\u1C90-\u1CBA\u1CBD-\u1CBF\u1CE9-\u1CEC\u1CEE-\u1CF1\u1CF5\u1CF6\u1D00-\u1DBF\u1E00-\u1F15\u1F18-\u1F1D\u1F20-\u1F45\u1F48-\u1F4D\u1F50-\u1F57\u1F59\u1F5B\u1F5D\u1F5F-\u1F7D\u1F80-\u1FB4\u1FB6-\u1FBC\u1FBE\u1FC2-\u1FC4\u1FC6-\u1FCC\u1FD0-\u1FD3\u1FD6-\u1FDB\u1FE0-\u1FEC\u1FF2-\u1FF4\u1FF6-\u1FFC\u2071\u207F\u2090-\u209C\u2102\u2107\u210A-\u2113\u2115\u2119-\u211D\u2124\u2126\u2128\u212A-\u212D\u212F-\u2139\u213C-\u213F\u2145-\u2149\u214E\u2183\u2184\u2C00-\u2C2E\u2C30-\u2C5E\u2C60-\u2CE4\u2CEB-\u2CEE\u2CF2\u2CF3\u2D00-\u2D25\u2D27\u2D2D\u2D30-\u2D67\u2D6F\u2D80-\u2D96\u2DA0-\u2DA6\u2DA8-\u2DAE\u2DB0-\u2DB6\u2DB8-\u2DBE\u2DC0-\u2DC6\u2DC8-\u2DCE\u2DD0-\u2DD6\u2DD8-\u2DDE\u2E2F\u3005\u3006\u3031-\u3035\u303B\u303C\u3041-\u3096\u309D-\u309F\u30A1-\u30FA\u30FC-\u30FF\u3105-\u312F\u3131-\u318E\u31A0-\u31BA\u31F0-\u31FF\u3400-\u4DB5\u4E00-\u9FEF\uA000-\uA48C\uA4D0-\uA4FD\uA500-\uA60C\uA610-\uA61F\uA62A\uA62B\uA640-\uA66E\uA67F-\uA69D\uA6A0-\uA6E5\uA717-\uA71F\uA722-\uA788\uA78B-\uA7B9\uA7F7-\uA801\uA803-\uA805\uA807-\uA80A\uA80C-\uA822\uA840-\uA873\uA882-\uA8B3\uA8F2-\uA8F7\uA8FB\uA8FD\uA8FE\uA90A-\uA925\uA930-\uA946\uA960-\uA97C\uA984-\uA9B2\uA9CF\uA9E0-\uA9E4\uA9E6-\uA9EF\uA9FA-\uA9FE\uAA00-\uAA28\uAA40-\uAA42\uAA44-\uAA4B\uAA60-\uAA76\uAA7A\uAA7E-\uAAAF\uAAB1\uAAB5\uAAB6\uAAB9-\uAABD\uAAC0\uAAC2\uAADB-\uAADD\uAAE0-\uAAEA\uAAF2-\uAAF4\uAB01-\uAB06\uAB09-\uAB0E\uAB11-\uAB16\uAB20-\uAB26\uAB28-\uAB2E\uAB30-\uAB5A\uAB5C-\uAB65\uAB70-\uABE2\uAC00-\uD7A3\uD7B0-\uD7C6\uD7CB-\uD7FB\uF900-\uFA6D\uFA70-\uFAD9\uFB00-\uFB06\uFB13-\uFB17\uFB1D\uFB1F-\uFB28\uFB2A-\uFB36\uFB38-\uFB3C\uFB3E\uFB40\uFB41\uFB43\uFB44\uFB46-\uFBB1\uFBD3-\uFD3D\uFD50-\uFD8F\uFD92-\uFDC7\uFDF0-\uFDFB\uFE70-\uFE74\uFE76-\uFEFC\uFF21-\uFF3A\uFF41-\uFF5A\uFF66-\uFFBE\uFFC2-\uFFC7\uFFCA-\uFFCF\uFFD2-\uFFD7\uFFDA-\uFFDC]|\uD800[\uDC00-\uDC0B\uDC0D-\uDC26\uDC28-\uDC3A\uDC3C\uDC3D\uDC3F-\uDC4D\uDC50-\uDC5D\uDC80-\uDCFA\uDE80-\uDE9C\uDEA0-\uDED0\uDF00-\uDF1F\uDF2D-\uDF40\uDF42-\uDF49\uDF50-\uDF75\uDF80-\uDF9D\uDFA0-\uDFC3\uDFC8-\uDFCF]|\uD801[\uDC00-\uDC9D\uDCB0-\uDCD3\uDCD8-\uDCFB\uDD00-\uDD27\uDD30-\uDD63\uDE00-\uDF36\uDF40-\uDF55\uDF60-\uDF67]|\uD802[\uDC00-\uDC05\uDC08\uDC0A-\uDC35\uDC37\uDC38\uDC3C\uDC3F-\uDC55\uDC60-\uDC76\uDC80-\uDC9E\uDCE0-\uDCF2\uDCF4\uDCF5\uDD00-\uDD15\uDD20-\uDD39\uDD80-\uDDB7\uDDBE\uDDBF\uDE00\uDE10-\uDE13\uDE15-\uDE17\uDE19-\uDE35\uDE60-\uDE7C\uDE80-\uDE9C\uDEC0-\uDEC7\uDEC9-\uDEE4\uDF00-\uDF35\uDF40-\uDF55\uDF60-\uDF72\uDF80-\uDF91]|\uD803[\uDC00-\uDC48\uDC80-\uDCB2\uDCC0-\uDCF2\uDD00-\uDD23\uDF00-\uDF1C\uDF27\uDF30-\uDF45]|\uD804[\uDC03-\uDC37\uDC83-\uDCAF\uDCD0-\uDCE8\uDD03-\uDD26\uDD44\uDD50-\uDD72\uDD76\uDD83-\uDDB2\uDDC1-\uDDC4\uDDDA\uDDDC\uDE00-\uDE11\uDE13-\uDE2B\uDE80-\uDE86\uDE88\uDE8A-\uDE8D\uDE8F-\uDE9D\uDE9F-\uDEA8\uDEB0-\uDEDE\uDF05-\uDF0C\uDF0F\uDF10\uDF13-\uDF28\uDF2A-\uDF30\uDF32\uDF33\uDF35-\uDF39\uDF3D\uDF50\uDF5D-\uDF61]|\uD805[\uDC00-\uDC34\uDC47-\uDC4A\uDC80-\uDCAF\uDCC4\uDCC5\uDCC7\uDD80-\uDDAE\uDDD8-\uDDDB\uDE00-\uDE2F\uDE44\uDE80-\uDEAA\uDF00-\uDF1A]|\uD806[\uDC00-\uDC2B\uDCA0-\uDCDF\uDCFF\uDE00\uDE0B-\uDE32\uDE3A\uDE50\uDE5C-\uDE83\uDE86-\uDE89\uDE9D\uDEC0-\uDEF8]|\uD807[\uDC00-\uDC08\uDC0A-\uDC2E\uDC40\uDC72-\uDC8F\uDD00-\uDD06\uDD08\uDD09\uDD0B-\uDD30\uDD46\uDD60-\uDD65\uDD67\uDD68\uDD6A-\uDD89\uDD98\uDEE0-\uDEF2]|\uD808[\uDC00-\uDF99]|\uD809[\uDC80-\uDD43]|[\uD80C\uD81C-\uD820\uD840-\uD868\uD86A-\uD86C\uD86F-\uD872\uD874-\uD879][\uDC00-\uDFFF]|\uD80D[\uDC00-\uDC2E]|\uD811[\uDC00-\uDE46]|\uD81A[\uDC00-\uDE38\uDE40-\uDE5E\uDED0-\uDEED\uDF00-\uDF2F\uDF40-\uDF43\uDF63-\uDF77\uDF7D-\uDF8F]|\uD81B[\uDE40-\uDE7F\uDF00-\uDF44\uDF50\uDF93-\uDF9F\uDFE0\uDFE1]|\uD821[\uDC00-\uDFF1]|\uD822[\uDC00-\uDEF2]|\uD82C[\uDC00-\uDD1E\uDD70-\uDEFB]|\uD82F[\uDC00-\uDC6A\uDC70-\uDC7C\uDC80-\uDC88\uDC90-\uDC99]|\uD835[\uDC00-\uDC54\uDC56-\uDC9C\uDC9E\uDC9F\uDCA2\uDCA5\uDCA6\uDCA9-\uDCAC\uDCAE-\uDCB9\uDCBB\uDCBD-\uDCC3\uDCC5-\uDD05\uDD07-\uDD0A\uDD0D-\uDD14\uDD16-\uDD1C\uDD1E-\uDD39\uDD3B-\uDD3E\uDD40-\uDD44\uDD46\uDD4A-\uDD50\uDD52-\uDEA5\uDEA8-\uDEC0\uDEC2-\uDEDA\uDEDC-\uDEFA\uDEFC-\uDF14\uDF16-\uDF34\uDF36-\uDF4E\uDF50-\uDF6E\uDF70-\uDF88\uDF8A-\uDFA8\uDFAA-\uDFC2\uDFC4-\uDFCB]|\uD83A[\uDC00-\uDCC4\uDD00-\uDD43]|\uD83B[\uDE00-\uDE03\uDE05-\uDE1F\uDE21\uDE22\uDE24\uDE27\uDE29-\uDE32\uDE34-\uDE37\uDE39\uDE3B\uDE42\uDE47\uDE49\uDE4B\uDE4D-\uDE4F\uDE51\uDE52\uDE54\uDE57\uDE59\uDE5B\uDE5D\uDE5F\uDE61\uDE62\uDE64\uDE67-\uDE6A\uDE6C-\uDE72\uDE74-\uDE77\uDE79-\uDE7C\uDE7E\uDE80-\uDE89\uDE8B-\uDE9B\uDEA1-\uDEA3\uDEA5-\uDEA9\uDEAB-\uDEBB]|\uD869[\uDC00-\uDED6\uDF00-\uDFFF]|\uD86D[\uDC00-\uDF34\uDF40-\uDFFF]|\uD86E[\uDC00-\uDC1D\uDC20-\uDFFF]|\uD873[\uDC00-\uDEA1\uDEB0-\uDFFF]|\uD87A[\uDC00-\uDFE0]|\uD87E[\uDC00-\uDE1D])+$/;

function addWorkspaceToArgumentsIfExists(args: string[], workspace: string) {
  if (workspace) {
    args.unshift(workspace);
  }
  return args;
}

function getArgumentsForLineNumber(
  editor: string,
  fileName: string,
  lineNumber: number,
  workspace: any,
) {
  switch (path.basename(editor)) {
    case 'vim':
    case 'mvim':
      return [fileName, `+${lineNumber}`];
    case 'atom':
    case 'Atom':
    case 'Atom Beta':
    case 'subl':
    case 'sublime':
    case 'webstorm':
    case 'wstorm':
    case 'appcode':
    case 'charm':
    case 'idea':
      return [`${fileName}:${lineNumber}`];
    case 'joe':
    case 'emacs':
    case 'emacsclient':
      return [`+${lineNumber}`, fileName];
    case 'rmate':
    case 'mate':
    case 'mine':
      return ['--line', lineNumber, fileName];
    case 'code':
      return addWorkspaceToArgumentsIfExists(
        ['-g', `${fileName}:${lineNumber}`],
        workspace,
      );
    case 'devenv':
      return ['/EDIT', fileName];
    // For all others, drop the lineNumber until we have
    // a mapping above, since providing the lineNumber incorrectly
    // can result in errors or confusing behavior.
    default:
      return [fileName];
  }
}

function getArgumentsForFileName(
  editor: string,
  fileName: string,
  workspace: any,
) {
  switch (path.basename(editor)) {
    case 'code':
      return addWorkspaceToArgumentsIfExists([fileName], workspace);
    case 'devenv':
      return ['/EDIT', fileName];
    // Every other editor just takes the filename as an argument
    default:
      return [fileName];
  }
}

function guessEditor() {
  // Explicit config always wins
  if (process.env.REACT_EDITOR) {
    return shellQuote.parse(process.env.REACT_EDITOR);
  }

  try {
    // Using `ps x` on OSX we can find out which editor is currently running.
    // Potentially we could use similar technique for Linux
    if (process.platform === 'darwin') {
      const output = execSync('ps x').toString();
      const processNames = Object.keys(COMMON_EDITORS);
      for (const processName of processNames) {
        if (output.indexOf(processName) !== -1) {
          return [COMMON_EDITORS[processName]];
        }
      }
    } else if (process.platform === 'win32') {
      const output = execSync(
        'tasklist /NH /FO CSV /FI "SESSIONNAME ne Services"',
      ).toString();

      const runningProcesses = output
        .split('\n')
        .map((line) => line.replace(/^"|".*\r$/gm, ''));
      const processNames = Object.keys(COMMON_WINDOWS_EDITORS);
      for (const processName of processNames) {
        if (runningProcesses.includes(processName)) {
          return [COMMON_WINDOWS_EDITORS[processName]];
        }
      }
    }
  } catch (error) {
    // Ignore...
  }

  // Last resort, use old skool env vars
  if (process.env.VISUAL) {
    return [process.env.VISUAL];
  }
  if (process.env.EDITOR) {
    return [process.env.EDITOR];
  }

  return [null];
}

function printInstructions(title: string) {
  const WINDOWS_FIXIT_INSTRUCTIONS = [
    '  To set it up, you can run something like "SETX REACT_EDITOR code"',
    '  which will set the environment variable in future shells,',
    '  then "SET REACTEDITOR=code" to set it in the current shell',
  ];

  const FIXIT_INSTRUCTIONS = [
    '  To set it up, you can add something like ',
    '  export REACT_EDITOR=atom to your ~/.bashrc or ~/.zshrc depending on ',
    '  which shell you use.',
  ];

  logger.info(
    [
      '',
      chalk.bgBlue.white.bold(` ${title} `),
      '  When you see Red Box with stack trace, you can click any ',
      '  stack frame to jump to the source file. The packager will launch your ',
      '  editor of choice. It will first look at REACT_EDITOR environment ',
      '  variable, then at EDITOR.',
      ...(process.platform === 'win32'
        ? WINDOWS_FIXIT_INSTRUCTIONS
        : FIXIT_INSTRUCTIONS),
      '',
    ].join('\n'),
  );
}

function transformToAbsolutePathIfNeeded(pathName: string) {
  if (!path.isAbsolute(pathName)) {
    return path.resolve(process.cwd(), pathName);
  }
  return pathName;
}

function findRootForFile(
  projectRoots: ReadonlyArray<string>,
  fileName: string,
) {
  const absoluteFileName = transformToAbsolutePathIfNeeded(fileName);
  return projectRoots.find((root) => {
    const absoluteRoot = transformToAbsolutePathIfNeeded(root);
    return absoluteFileName.startsWith(absoluteRoot + path.sep);
  });
}

// On windows, find the editor executable path even if its not in the users path
function editorWindowsLaunchPath(editor: string) {
  if (fs.existsSync(editor)) {
    // Editor is a full path to an exe, we can just launch it
    return editor;
  }

  try {
    execSync(`where ${editor}`, {stdio: 'ignore'});
    // Editor is on the path, we can just launch it
    return editor;
  } catch (error) {
    // ignore
  }

  try {
    const editorNames = Object.values(COMMON_WINDOWS_EDITORS);
    const editorImageNames = Object.keys(COMMON_WINDOWS_EDITORS);
    for (let i = 0; i < editorNames.length; i++) {
      const editorName = editorNames[i];
      if (editor.toLowerCase() === editorName.toLowerCase()) {
        // An editor was guessed by guessEditor, but isn't part of the users path
        // Attempt to get the executable location from the running process
        const output = execSync(
          `tasklist /FO CSV /NH /FI "IMAGENAME eq ${editorImageNames[i]}"`,
        ).toString();

        const results = output.split(',');
        if (results[0] !== `"${editorImageNames[i]}"`) {
          // Failed to find a running instance...
          return editor;
        }

        const pid = parseInt(results[1].replace(/^"|"$/gm, ''), 10);
        return execSync(
          `powershell (Get-CimInstance Win32_Process -Filter "ProcessId=${pid}").ExecutablePath`,
        )
          .toString()
          .trim();
      }
    }
  } catch (error) {
    // ignore
  }

  // Just use what the user specified, it will probably fail,
  // but we will show some help text when it fails.
  return editor;
}

let _childProcess: ChildProcess | null = null;
function launchEditor(
  fileName: string,
  lineNumber: number,
  projectRoots: ReadonlyArray<string>,
) {
  if (!fs.existsSync(fileName)) {
    return;
  }

  // Sanitize lineNumber to prevent malicious use on win32
  // via: https://github.com/nodejs/node/blob/c3bb4b1aa5e907d489619fb43d233c3336bfc03d/lib/child_process.js#L333
  if (lineNumber && isNaN(lineNumber)) {
    return;
  }

  let [editor, ...args] = guessEditor();
  if (!editor) {
    printInstructions('PRO TIP');
    return;
  }

  const workspace = findRootForFile(projectRoots, fileName);
  if (lineNumber) {
    args = args.concat(
      getArgumentsForLineNumber(editor, fileName, lineNumber, workspace),
    );
  } else {
    args = args.concat(getArgumentsForFileName(editor, fileName, workspace));
  }

  // cmd.exe on Windows is vulnerable to RCE attacks given a file name of the
  // form "C:\Users\myusername\Downloads\& curl 172.21.93.52". Use a whitelist
  // to validate user-provided file names. This doesn't cover the entire range
  // of valid file names but should cover almost all of them in practice.
  if (
    process.platform === 'win32' &&
    !WINDOWS_FILE_NAME_WHITELIST.test(fileName.trim())
  ) {
    logger.error(`Could not open ${path.basename(fileName)} in the editor.`);
    logger.info(
      'When running on Windows, file names are checked against a whitelist ' +
        'to protect against remote code execution attacks. File names may ' +
        'consist only of alphanumeric characters (all languages), periods, ' +
        'dashes, at signs, slashes, and underscores.',
    );
    return;
  }

  logger.info(
    `Opening ${chalk.underline(fileName)} with ${chalk.bold(editor)}`,
  );

  if (_childProcess && isTerminalEditor(editor)) {
    // There's an existing editor process already and it's attached
    // to the terminal, so go kill it. Otherwise two separate editor
    // instances attach to the stdin/stdout which gets confusing.
    _childProcess.kill('SIGKILL');
  }

  if (process.platform === 'win32') {
    // On Windows, launch the editor in a shell because spawn can only
    // launch .exe files.
    _childProcess = spawn(
      'cmd.exe',
      ['/C', editorWindowsLaunchPath(editor)].concat(args),
      {
        stdio: 'inherit',
      },
    );
  } else {
    _childProcess = spawn(editor, args, {stdio: 'inherit'});
  }
  _childProcess.on('exit', (errorCode) => {
    _childProcess = null;

    if (errorCode) {
      logger.error('Your editor exited with an error!');
      printInstructions('Keep these instructions in mind:');
    }
  });

  _childProcess.on('error', (error) => {
    logger.error(error.message);
    printInstructions('How to fix:');
  });
}

export default launchEditor;