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+/**
+ * Module dependencies.
+ */
+
+const EventEmitter = require('events').EventEmitter;
+const spawn = require('child_process').spawn;
+const path = require('path');
+const fs = require('fs');
+
+// @ts-check
+
+class Option {
+ /**
+ * Initialize a new `Option` with the given `flags` and `description`.
+ *
+ * @param {string} flags
+ * @param {string} description
+ * @api public
+ */
+
+ constructor(flags, description) {
+ this.flags = flags;
+ this.required = flags.indexOf('<') >= 0; // A value must be supplied when the option is specified.
+ this.optional = flags.indexOf('[') >= 0; // A value is optional when the option is specified.
+ this.mandatory = false; // The option must have a value after parsing, which usually means it must be specified on command line.
+ this.negate = flags.indexOf('-no-') !== -1;
+ const flagParts = flags.split(/[ ,|]+/);
+ if (flagParts.length > 1 && !/^[[<]/.test(flagParts[1])) this.short = flagParts.shift();
+ this.long = flagParts.shift();
+ this.description = description || '';
+ this.defaultValue = undefined;
+ }
+
+ /**
+ * Return option name.
+ *
+ * @return {string}
+ * @api private
+ */
+
+ name() {
+ return this.long.replace(/^--/, '');
+ };
+
+ /**
+ * Return option name, in a camelcase format that can be used
+ * as a object attribute key.
+ *
+ * @return {string}
+ * @api private
+ */
+
+ attributeName() {
+ return camelcase(this.name().replace(/^no-/, ''));
+ };
+
+ /**
+ * Check if `arg` matches the short or long flag.
+ *
+ * @param {string} arg
+ * @return {boolean}
+ * @api private
+ */
+
+ is(arg) {
+ return this.short === arg || this.long === arg;
+ };
+}
+
+/**
+ * CommanderError class
+ * @class
+ */
+class CommanderError extends Error {
+ /**
+ * Constructs the CommanderError class
+ * @param {number} exitCode suggested exit code which could be used with process.exit
+ * @param {string} code an id string representing the error
+ * @param {string} message human-readable description of the error
+ * @constructor
+ */
+ constructor(exitCode, code, message) {
+ super(message);
+ // properly capture stack trace in Node.js
+ Error.captureStackTrace(this, this.constructor);
+ this.name = this.constructor.name;
+ this.code = code;
+ this.exitCode = exitCode;
+ this.nestedError = undefined;
+ }
+}
+
+class Command extends EventEmitter {
+ /**
+ * Initialize a new `Command`.
+ *
+ * @param {string} [name]
+ * @api public
+ */
+
+ constructor(name) {
+ super();
+ this.commands = [];
+ this.options = [];
+ this.parent = null;
+ this._allowUnknownOption = false;
+ this._args = [];
+ this.rawArgs = null;
+ this._scriptPath = null;
+ this._name = name || '';
+ this._optionValues = {};
+ this._storeOptionsAsProperties = true; // backwards compatible by default
+ this._passCommandToAction = true; // backwards compatible by default
+ this._actionResults = [];
+ this._actionHandler = null;
+ this._executableHandler = false;
+ this._executableFile = null; // custom name for executable
+ this._defaultCommandName = null;
+ this._exitCallback = null;
+ this._aliases = [];
+
+ this._hidden = false;
+ this._helpFlags = '-h, --help';
+ this._helpDescription = 'display help for command';
+ this._helpShortFlag = '-h';
+ this._helpLongFlag = '--help';
+ this._hasImplicitHelpCommand = undefined; // Deliberately undefined, not decided whether true or false
+ this._helpCommandName = 'help';
+ this._helpCommandnameAndArgs = 'help [command]';
+ this._helpCommandDescription = 'display help for command';
+ }
+
+ /**
+ * Define a command.
+ *
+ * There are two styles of command: pay attention to where to put the description.
+ *
+ * Examples:
+ *
+ * // Command implemented using action handler (description is supplied separately to `.command`)
+ * program
+ * .command('clone <source> [destination]')
+ * .description('clone a repository into a newly created directory')
+ * .action((source, destination) => {
+ * console.log('clone command called');
+ * });
+ *
+ * // Command implemented using separate executable file (description is second parameter to `.command`)
+ * program
+ * .command('start <service>', 'start named service')
+ * .command('stop [service]', 'stop named service, or all if no name supplied');
+ *
+ * @param {string} nameAndArgs - command name and arguments, args are `<required>` or `[optional]` and last may also be `variadic...`
+ * @param {Object|string} [actionOptsOrExecDesc] - configuration options (for action), or description (for executable)
+ * @param {Object} [execOpts] - configuration options (for executable)
+ * @return {Command} returns new command for action handler, or `this` for executable command
+ * @api public
+ */
+
+ command(nameAndArgs, actionOptsOrExecDesc, execOpts) {
+ let desc = actionOptsOrExecDesc;
+ let opts = execOpts;
+ if (typeof desc === 'object' && desc !== null) {
+ opts = desc;
+ desc = null;
+ }
+ opts = opts || {};
+ const args = nameAndArgs.split(/ +/);
+ const cmd = this.createCommand(args.shift());
+
+ if (desc) {
+ cmd.description(desc);
+ cmd._executableHandler = true;
+ }
+ if (opts.isDefault) this._defaultCommandName = cmd._name;
+
+ cmd._hidden = !!(opts.noHelp || opts.hidden);
+ cmd._helpFlags = this._helpFlags;
+ cmd._helpDescription = this._helpDescription;
+ cmd._helpShortFlag = this._helpShortFlag;
+ cmd._helpLongFlag = this._helpLongFlag;
+ cmd._helpCommandName = this._helpCommandName;
+ cmd._helpCommandnameAndArgs = this._helpCommandnameAndArgs;
+ cmd._helpCommandDescription = this._helpCommandDescription;
+ cmd._exitCallback = this._exitCallback;
+ cmd._storeOptionsAsProperties = this._storeOptionsAsProperties;
+ cmd._passCommandToAction = this._passCommandToAction;
+
+ cmd._executableFile = opts.executableFile || null; // Custom name for executable file, set missing to null to match constructor
+ this.commands.push(cmd);
+ cmd._parseExpectedArgs(args);
+ cmd.parent = this;
+
+ if (desc) return this;
+ return cmd;
+ };
+
+ /**
+ * Factory routine to create a new unattached command.
+ *
+ * See .command() for creating an attached subcommand, which uses this routine to
+ * create the command. You can override createCommand to customise subcommands.
+ *
+ * @param {string} [name]
+ * @return {Command} new command
+ * @api public
+ */
+
+ createCommand(name) {
+ return new Command(name);
+ };
+
+ /**
+ * Add a prepared subcommand.
+ *
+ * See .command() for creating an attached subcommand which inherits settings from its parent.
+ *
+ * @param {Command} cmd - new subcommand
+ * @param {Object} [opts] - configuration options
+ * @return {Command} `this` command for chaining
+ * @api public
+ */
+
+ addCommand(cmd, opts) {
+ if (!cmd._name) throw new Error('Command passed to .addCommand() must have a name');
+
+ // To keep things simple, block automatic name generation for deeply nested executables.
+ // Fail fast and detect when adding rather than later when parsing.
+ function checkExplicitNames(commandArray) {
+ commandArray.forEach((cmd) => {
+ if (cmd._executableHandler && !cmd._executableFile) {
+ throw new Error(`Must specify executableFile for deeply nested executable: ${cmd.name()}`);
+ }
+ checkExplicitNames(cmd.commands);
+ });
+ }
+ checkExplicitNames(cmd.commands);
+
+ opts = opts || {};
+ if (opts.isDefault) this._defaultCommandName = cmd._name;
+ if (opts.noHelp || opts.hidden) cmd._hidden = true; // modifying passed command due to existing implementation
+
+ this.commands.push(cmd);
+ cmd.parent = this;
+ return this;
+ };
+
+ /**
+ * Define argument syntax for the command.
+ *
+ * @api public
+ */
+
+ arguments(desc) {
+ return this._parseExpectedArgs(desc.split(/ +/));
+ };
+
+ /**
+ * Override default decision whether to add implicit help command.
+ *
+ * addHelpCommand() // force on
+ * addHelpCommand(false); // force off
+ * addHelpCommand('help [cmd]', 'display help for [cmd]'); // force on with custom detais
+ *
+ * @return {Command} `this` command for chaining
+ * @api public
+ */
+
+ addHelpCommand(enableOrNameAndArgs, description) {
+ if (enableOrNameAndArgs === false) {
+ this._hasImplicitHelpCommand = false;
+ } else {
+ this._hasImplicitHelpCommand = true;
+ if (typeof enableOrNameAndArgs === 'string') {
+ this._helpCommandName = enableOrNameAndArgs.split(' ')[0];
+ this._helpCommandnameAndArgs = enableOrNameAndArgs;
+ }
+ this._helpCommandDescription = description || this._helpCommandDescription;
+ }
+ return this;
+ };
+
+ /**
+ * @return {boolean}
+ * @api private
+ */
+
+ _lazyHasImplicitHelpCommand() {
+ if (this._hasImplicitHelpCommand === undefined) {
+ this._hasImplicitHelpCommand = this.commands.length && !this._actionHandler && !this._findCommand('help');
+ }
+ return this._hasImplicitHelpCommand;
+ };
+
+ /**
+ * Parse expected `args`.
+ *
+ * For example `["[type]"]` becomes `[{ required: false, name: 'type' }]`.
+ *
+ * @param {Array} args
+ * @return {Command} `this` command for chaining
+ * @api private
+ */
+
+ _parseExpectedArgs(args) {
+ if (!args.length) return;
+ args.forEach((arg) => {
+ const argDetails = {
+ required: false,
+ name: '',
+ variadic: false
+ };
+
+ switch (arg[0]) {
+ case '<':
+ argDetails.required = true;
+ argDetails.name = arg.slice(1, -1);
+ break;
+ case '[':
+ argDetails.name = arg.slice(1, -1);
+ break;
+ }
+
+ if (argDetails.name.length > 3 && argDetails.name.slice(-3) === '...') {
+ argDetails.variadic = true;
+ argDetails.name = argDetails.name.slice(0, -3);
+ }
+ if (argDetails.name) {
+ this._args.push(argDetails);
+ }
+ });
+ this._args.forEach((arg, i) => {
+ if (arg.variadic && i < this._args.length - 1) {
+ throw new Error(`only the last argument can be variadic '${arg.name}'`);
+ }
+ });
+ return this;
+ };
+
+ /**
+ * Register callback to use as replacement for calling process.exit.
+ *
+ * @param {Function} [fn] optional callback which will be passed a CommanderError, defaults to throwing
+ * @return {Command} `this` command for chaining
+ * @api public
+ */
+
+ exitOverride(fn) {
+ if (fn) {
+ this._exitCallback = fn;
+ } else {
+ this._exitCallback = (err) => {
+ if (err.code !== 'commander.executeSubCommandAsync') {
+ throw err;
+ } else {
+ // Async callback from spawn events, not useful to throw.
+ }
+ };
+ }
+ return this;
+ };
+
+ /**
+ * Call process.exit, and _exitCallback if defined.
+ *
+ * @param {number} exitCode exit code for using with process.exit
+ * @param {string} code an id string representing the error
+ * @param {string} message human-readable description of the error
+ * @return never
+ * @api private
+ */
+
+ _exit(exitCode, code, message) {
+ if (this._exitCallback) {
+ this._exitCallback(new CommanderError(exitCode, code, message));
+ // Expecting this line is not reached.
+ }
+ process.exit(exitCode);
+ };
+
+ /**
+ * Register callback `fn` for the command.
+ *
+ * Examples:
+ *
+ * program
+ * .command('help')
+ * .description('display verbose help')
+ * .action(function() {
+ * // output help here
+ * });
+ *
+ * @param {Function} fn
+ * @return {Command} `this` command for chaining
+ * @api public
+ */
+
+ action(fn) {
+ const listener = (args) => {
+ // The .action callback takes an extra parameter which is the command or options.
+ const expectedArgsCount = this._args.length;
+ const actionArgs = args.slice(0, expectedArgsCount);
+ if (this._passCommandToAction) {
+ actionArgs[expectedArgsCount] = this;
+ } else {
+ actionArgs[expectedArgsCount] = this.opts();
+ }
+ // Add the extra arguments so available too.
+ if (args.length > expectedArgsCount) {
+ actionArgs.push(args.slice(expectedArgsCount));
+ }
+
+ const actionResult = fn.apply(this, actionArgs);
+ // Remember result in case it is async. Assume parseAsync getting called on root.
+ let rootCommand = this;
+ while (rootCommand.parent) {
+ rootCommand = rootCommand.parent;
+ }
+ rootCommand._actionResults.push(actionResult);
+ };
+ this._actionHandler = listener;
+ return this;
+ };
+
+ /**
+ * Internal implementation shared by .option() and .requiredOption()
+ *
+ * @param {Object} config
+ * @param {string} flags
+ * @param {string} description
+ * @param {Function|*} [fn] - custom option processing function or default vaue
+ * @param {*} [defaultValue]
+ * @return {Command} `this` command for chaining
+ * @api private
+ */
+
+ _optionEx(config, flags, description, fn, defaultValue) {
+ const option = new Option(flags, description);
+ const oname = option.name();
+ const name = option.attributeName();
+ option.mandatory = !!config.mandatory;
+
+ // default as 3rd arg
+ if (typeof fn !== 'function') {
+ if (fn instanceof RegExp) {
+ // This is a bit simplistic (especially no error messages), and probably better handled by caller using custom option processing.
+ // No longer documented in README, but still present for backwards compatibility.
+ const regex = fn;
+ fn = (val, def) => {
+ const m = regex.exec(val);
+ return m ? m[0] : def;
+ };
+ } else {
+ defaultValue = fn;
+ fn = null;
+ }
+ }
+
+ // preassign default value for --no-*, [optional], <required>, or plain flag if boolean value
+ if (option.negate || option.optional || option.required || typeof defaultValue === 'boolean') {
+ // when --no-foo we make sure default is true, unless a --foo option is already defined
+ if (option.negate) {
+ const positiveLongFlag = option.long.replace(/^--no-/, '--');
+ defaultValue = this._findOption(positiveLongFlag) ? this._getOptionValue(name) : true;
+ }
+ // preassign only if we have a default
+ if (defaultValue !== undefined) {
+ this._setOptionValue(name, defaultValue);
+ option.defaultValue = defaultValue;
+ }
+ }
+
+ // register the option
+ this.options.push(option);
+
+ // when it's passed assign the value
+ // and conditionally invoke the callback
+ this.on('option:' + oname, (val) => {
+ // coercion
+ if (val !== null && fn) {
+ val = fn(val, this._getOptionValue(name) === undefined ? defaultValue : this._getOptionValue(name));
+ }
+
+ // unassigned or boolean value
+ if (typeof this._getOptionValue(name) === 'boolean' || typeof this._getOptionValue(name) === 'undefined') {
+ // if no value, negate false, and we have a default, then use it!
+ if (val == null) {
+ this._setOptionValue(name, option.negate
+ ? false
+ : defaultValue || true);
+ } else {
+ this._setOptionValue(name, val);
+ }
+ } else if (val !== null) {
+ // reassign
+ this._setOptionValue(name, option.negate ? false : val);
+ }
+ });
+
+ return this;
+ };
+
+ /**
+ * Define option with `flags`, `description` and optional
+ * coercion `fn`.
+ *
+ * The `flags` string should contain both the short and long flags,
+ * separated by comma, a pipe or space. The following are all valid
+ * all will output this way when `--help` is used.
+ *
+ * "-p, --pepper"
+ * "-p|--pepper"
+ * "-p --pepper"
+ *
+ * Examples:
+ *
+ * // simple boolean defaulting to undefined
+ * program.option('-p, --pepper', 'add pepper');
+ *
+ * program.pepper
+ * // => undefined
+ *
+ * --pepper
+ * program.pepper
+ * // => true
+ *
+ * // simple boolean defaulting to true (unless non-negated option is also defined)
+ * program.option('-C, --no-cheese', 'remove cheese');
+ *
+ * program.cheese
+ * // => true
+ *
+ * --no-cheese
+ * program.cheese
+ * // => false
+ *
+ * // required argument
+ * program.option('-C, --chdir <path>', 'change the working directory');
+ *
+ * --chdir /tmp
+ * program.chdir
+ * // => "/tmp"
+ *
+ * // optional argument
+ * program.option('-c, --cheese [type]', 'add cheese [marble]');
+ *
+ * @param {string} flags
+ * @param {string} description
+ * @param {Function|*} [fn] - custom option processing function or default vaue
+ * @param {*} [defaultValue]
+ * @return {Command} `this` command for chaining
+ * @api public
+ */
+
+ option(flags, description, fn, defaultValue) {
+ return this._optionEx({}, flags, description, fn, defaultValue);
+ };
+
+ /*
+ * Add a required option which must have a value after parsing. This usually means
+ * the option must be specified on the command line. (Otherwise the same as .option().)
+ *
+ * The `flags` string should contain both the short and long flags, separated by comma, a pipe or space.
+ *
+ * @param {string} flags
+ * @param {string} description
+ * @param {Function|*} [fn] - custom option processing function or default vaue
+ * @param {*} [defaultValue]
+ * @return {Command} `this` command for chaining
+ * @api public
+ */
+
+ requiredOption(flags, description, fn, defaultValue) {
+ return this._optionEx({ mandatory: true }, flags, description, fn, defaultValue);
+ };
+
+ /**
+ * Allow unknown options on the command line.
+ *
+ * @param {Boolean} [arg] - if `true` or omitted, no error will be thrown
+ * for unknown options.
+ * @api public
+ */
+ allowUnknownOption(arg) {
+ this._allowUnknownOption = (arg === undefined) || arg;
+ return this;
+ };
+
+ /**
+ * Whether to store option values as properties on command object,
+ * or store separately (specify false). In both cases the option values can be accessed using .opts().
+ *
+ * @param {boolean} value
+ * @return {Command} `this` command for chaining
+ * @api public
+ */
+
+ storeOptionsAsProperties(value) {
+ this._storeOptionsAsProperties = (value === undefined) || value;
+ if (this.options.length) {
+ throw new Error('call .storeOptionsAsProperties() before adding options');
+ }
+ return this;
+ };
+
+ /**
+ * Whether to pass command to action handler,
+ * or just the options (specify false).
+ *
+ * @param {boolean} value
+ * @return {Command} `this` command for chaining
+ * @api public
+ */
+
+ passCommandToAction(value) {
+ this._passCommandToAction = (value === undefined) || value;
+ return this;
+ };
+
+ /**
+ * Store option value
+ *
+ * @param {string} key
+ * @param {Object} value
+ * @api private
+ */
+
+ _setOptionValue(key, value) {
+ if (this._storeOptionsAsProperties) {
+ this[key] = value;
+ } else {
+ this._optionValues[key] = value;
+ }
+ };
+
+ /**
+ * Retrieve option value
+ *
+ * @param {string} key
+ * @return {Object} value
+ * @api private
+ */
+
+ _getOptionValue(key) {
+ if (this._storeOptionsAsProperties) {
+ return this[key];
+ }
+ return this._optionValues[key];
+ };
+
+ /**
+ * Parse `argv`, setting options and invoking commands when defined.
+ *
+ * The default expectation is that the arguments are from node and have the application as argv[0]
+ * and the script being run in argv[1], with user parameters after that.
+ *
+ * Examples:
+ *
+ * program.parse(process.argv);
+ * program.parse(); // implicitly use process.argv and auto-detect node vs electron conventions
+ * program.parse(my-args, { from: 'user' }); // just user supplied arguments, nothing special about argv[0]
+ *
+ * @param {string[]} [argv] - optional, defaults to process.argv
+ * @param {Object} [parseOptions] - optionally specify style of options with from: node/user/electron
+ * @param {string} [parseOptions.from] - where the args are from: 'node', 'user', 'electron'
+ * @return {Command} `this` command for chaining
+ * @api public
+ */
+
+ parse(argv, parseOptions) {
+ if (argv !== undefined && !Array.isArray(argv)) {
+ throw new Error('first parameter to parse must be array or undefined');
+ }
+ parseOptions = parseOptions || {};
+
+ // Default to using process.argv
+ if (argv === undefined) {
+ argv = process.argv;
+ // @ts-ignore
+ if (process.versions && process.versions.electron) {
+ parseOptions.from = 'electron';
+ }
+ }
+ this.rawArgs = argv.slice();
+
+ // make it a little easier for callers by supporting various argv conventions
+ let userArgs;
+ switch (parseOptions.from) {
+ case undefined:
+ case 'node':
+ this._scriptPath = argv[1];
+ userArgs = argv.slice(2);
+ break;
+ case 'electron':
+ // @ts-ignore
+ if (process.defaultApp) {
+ this._scriptPath = argv[1];
+ userArgs = argv.slice(2);
+ } else {
+ userArgs = argv.slice(1);
+ }
+ break;
+ case 'user':
+ userArgs = argv.slice(0);
+ break;
+ default:
+ throw new Error(`unexpected parse option { from: '${parseOptions.from}' }`);
+ }
+ if (!this._scriptPath && process.mainModule) {
+ this._scriptPath = process.mainModule.filename;
+ }
+
+ // Guess name, used in usage in help.
+ this._name = this._name || (this._scriptPath && path.basename(this._scriptPath, path.extname(this._scriptPath)));
+
+ // Let's go!
+ this._parseCommand([], userArgs);
+
+ return this;
+ };
+
+ /**
+ * Parse `argv`, setting options and invoking commands when defined.
+ *
+ * Use parseAsync instead of parse if any of your action handlers are async. Returns a Promise.
+ *
+ * The default expectation is that the arguments are from node and have the application as argv[0]
+ * and the script being run in argv[1], with user parameters after that.
+ *
+ * Examples:
+ *
+ * program.parseAsync(process.argv);
+ * program.parseAsync(); // implicitly use process.argv and auto-detect node vs electron conventions
+ * program.parseAsync(my-args, { from: 'user' }); // just user supplied arguments, nothing special about argv[0]
+ *
+ * @param {string[]} [argv]
+ * @param {Object} [parseOptions]
+ * @param {string} parseOptions.from - where the args are from: 'node', 'user', 'electron'
+ * @return {Promise}
+ * @api public
+ */
+
+ parseAsync(argv, parseOptions) {
+ this.parse(argv, parseOptions);
+ return Promise.all(this._actionResults).then(() => this);
+ };
+
+ /**
+ * Execute a sub-command executable.
+ *
+ * @api private
+ */
+
+ _executeSubCommand(subcommand, args) {
+ args = args.slice();
+ let launchWithNode = false; // Use node for source targets so do not need to get permissions correct, and on Windows.
+ const sourceExt = ['.js', '.ts', '.mjs'];
+
+ // Not checking for help first. Unlikely to have mandatory and executable, and can't robustly test for help flags in external command.
+ this._checkForMissingMandatoryOptions();
+
+ // Want the entry script as the reference for command name and directory for searching for other files.
+ const scriptPath = this._scriptPath;
+
+ let baseDir;
+ try {
+ const resolvedLink = fs.realpathSync(scriptPath);
+ baseDir = path.dirname(resolvedLink);
+ } catch (e) {
+ baseDir = '.'; // dummy, probably not going to find executable!
+ }
+
+ // name of the subcommand, like `pm-install`
+ let bin = path.basename(scriptPath, path.extname(scriptPath)) + '-' + subcommand._name;
+ if (subcommand._executableFile) {
+ bin = subcommand._executableFile;
+ }
+
+ const localBin = path.join(baseDir, bin);
+ if (fs.existsSync(localBin)) {
+ // prefer local `./<bin>` to bin in the $PATH
+ bin = localBin;
+ } else {
+ // Look for source files.
+ sourceExt.forEach((ext) => {
+ if (fs.existsSync(`${localBin}${ext}`)) {
+ bin = `${localBin}${ext}`;
+ }
+ });
+ }
+ launchWithNode = sourceExt.includes(path.extname(bin));
+
+ let proc;
+ if (process.platform !== 'win32') {
+ if (launchWithNode) {
+ args.unshift(bin);
+ // add executable arguments to spawn
+ args = incrementNodeInspectorPort(process.execArgv).concat(args);
+
+ proc = spawn(process.argv[0], args, { stdio: 'inherit' });
+ } else {
+ proc = spawn(bin, args, { stdio: 'inherit' });
+ }
+ } else {
+ args.unshift(bin);
+ // add executable arguments to spawn
+ args = incrementNodeInspectorPort(process.execArgv).concat(args);
+ proc = spawn(process.execPath, args, { stdio: 'inherit' });
+ }
+
+ const signals = ['SIGUSR1', 'SIGUSR2', 'SIGTERM', 'SIGINT', 'SIGHUP'];
+ signals.forEach((signal) => {
+ // @ts-ignore
+ process.on(signal, () => {
+ if (proc.killed === false && proc.exitCode === null) {
+ proc.kill(signal);
+ }
+ });
+ });
+
+ // By default terminate process when spawned process terminates.
+ // Suppressing the exit if exitCallback defined is a bit messy and of limited use, but does allow process to stay running!
+ const exitCallback = this._exitCallback;
+ if (!exitCallback) {
+ proc.on('close', process.exit.bind(process));
+ } else {
+ proc.on('close', () => {
+ exitCallback(new CommanderError(process.exitCode || 0, 'commander.executeSubCommandAsync', '(close)'));
+ });
+ }
+ proc.on('error', (err) => {
+ // @ts-ignore
+ if (err.code === 'ENOENT') {
+ const executableMissing = `'${bin}' does not exist
+ - if '${subcommand._name}' is not meant to be an executable command, remove description parameter from '.command()' and use '.description()' instead
+ - if the default executable name is not suitable, use the executableFile option to supply a custom name`;
+ throw new Error(executableMissing);
+ // @ts-ignore
+ } else if (err.code === 'EACCES') {
+ throw new Error(`'${bin}' not executable`);
+ }
+ if (!exitCallback) {
+ process.exit(1);
+ } else {
+ const wrappedError = new CommanderError(1, 'commander.executeSubCommandAsync', '(error)');
+ wrappedError.nestedError = err;
+ exitCallback(wrappedError);
+ }
+ });
+
+ // Store the reference to the child process
+ this.runningCommand = proc;
+ };
+
+ /**
+ * @api private
+ */
+ _dispatchSubcommand(commandName, operands, unknown) {
+ const subCommand = this._findCommand(commandName);
+ if (!subCommand) this._helpAndError();
+
+ if (subCommand._executableHandler) {
+ this._executeSubCommand(subCommand, operands.concat(unknown));
+ } else {
+ subCommand._parseCommand(operands, unknown);
+ }
+ };
+
+ /**
+ * Process arguments in context of this command.
+ *
+ * @api private
+ */
+
+ _parseCommand(operands, unknown) {
+ const parsed = this.parseOptions(unknown);
+ operands = operands.concat(parsed.operands);
+ unknown = parsed.unknown;
+ this.args = operands.concat(unknown);
+
+ if (operands && this._findCommand(operands[0])) {
+ this._dispatchSubcommand(operands[0], operands.slice(1), unknown);
+ } else if (this._lazyHasImplicitHelpCommand() && operands[0] === this._helpCommandName) {
+ if (operands.length === 1) {
+ this.help();
+ } else {
+ this._dispatchSubcommand(operands[1], [], [this._helpLongFlag]);
+ }
+ } else if (this._defaultCommandName) {
+ outputHelpIfRequested(this, unknown); // Run the help for default command from parent rather than passing to default command
+ this._dispatchSubcommand(this._defaultCommandName, operands, unknown);
+ } else {
+ if (this.commands.length && this.args.length === 0 && !this._actionHandler && !this._defaultCommandName) {
+ // probaby missing subcommand and no handler, user needs help
+ this._helpAndError();
+ }
+
+ outputHelpIfRequested(this, parsed.unknown);
+ this._checkForMissingMandatoryOptions();
+ if (parsed.unknown.length > 0) {
+ this.unknownOption(parsed.unknown[0]);
+ }
+
+ if (this._actionHandler) {
+ const args = this.args.slice();
+ this._args.forEach((arg, i) => {
+ if (arg.required && args[i] == null) {
+ this.missingArgument(arg.name);
+ } else if (arg.variadic) {
+ args[i] = args.splice(i);
+ }
+ });
+
+ this._actionHandler(args);
+ this.emit('command:' + this.name(), operands, unknown);
+ } else if (operands.length) {
+ if (this._findCommand('*')) {
+ this._dispatchSubcommand('*', operands, unknown);
+ } else if (this.listenerCount('command:*')) {
+ this.emit('command:*', operands, unknown);
+ } else if (this.commands.length) {
+ this.unknownCommand();
+ }
+ } else if (this.commands.length) {
+ // This command has subcommands and nothing hooked up at this level, so display help.
+ this._helpAndError();
+ } else {
+ // fall through for caller to handle after calling .parse()
+ }
+ }
+ };
+
+ /**
+ * Find matching command.
+ *
+ * @api private
+ */
+ _findCommand(name) {
+ if (!name) return undefined;
+ return this.commands.find(cmd => cmd._name === name || cmd._aliases.includes(name));
+ };
+
+ /**
+ * Return an option matching `arg` if any.
+ *
+ * @param {string} arg
+ * @return {Option}
+ * @api private
+ */
+
+ _findOption(arg) {
+ return this.options.find(option => option.is(arg));
+ };
+
+ /**
+ * Display an error message if a mandatory option does not have a value.
+ * Lazy calling after checking for help flags from leaf subcommand.
+ *
+ * @api private
+ */
+
+ _checkForMissingMandatoryOptions() {
+ // Walk up hierarchy so can call in subcommand after checking for displaying help.
+ for (let cmd = this; cmd; cmd = cmd.parent) {
+ cmd.options.forEach((anOption) => {
+ if (anOption.mandatory && (cmd._getOptionValue(anOption.attributeName()) === undefined)) {
+ cmd.missingMandatoryOptionValue(anOption);
+ }
+ });
+ }
+ };
+
+ /**
+ * Parse options from `argv` removing known options,
+ * and return argv split into operands and unknown arguments.
+ *
+ * Examples:
+ *
+ * argv => operands, unknown
+ * --known kkk op => [op], []
+ * op --known kkk => [op], []
+ * sub --unknown uuu op => [sub], [--unknown uuu op]
+ * sub -- --unknown uuu op => [sub --unknown uuu op], []
+ *
+ * @param {String[]} argv
+ * @return {{operands: String[], unknown: String[]}}
+ * @api public
+ */
+
+ parseOptions(argv) {
+ const operands = []; // operands, not options or values
+ const unknown = []; // first unknown option and remaining unknown args
+ let dest = operands;
+ const args = argv.slice();
+
+ function maybeOption(arg) {
+ return arg.length > 1 && arg[0] === '-';
+ }
+
+ // parse options
+ while (args.length) {
+ const arg = args.shift();
+
+ // literal
+ if (arg === '--') {
+ if (dest === unknown) dest.push(arg);
+ dest.push(...args);
+ break;
+ }
+
+ if (maybeOption(arg)) {
+ const option = this._findOption(arg);
+ // recognised option, call listener to assign value with possible custom processing
+ if (option) {
+ if (option.required) {
+ const value = args.shift();
+ if (value === undefined) this.optionMissingArgument(option);
+ this.emit(`option:${option.name()}`, value);
+ } else if (option.optional) {
+ let value = null;
+ // historical behaviour is optional value is following arg unless an option
+ if (args.length > 0 && !maybeOption(args[0])) {
+ value = args.shift();
+ }
+ this.emit(`option:${option.name()}`, value);
+ } else { // boolean flag
+ this.emit(`option:${option.name()}`);
+ }
+ continue;
+ }
+ }
+
+ // Look for combo options following single dash, eat first one if known.
+ if (arg.length > 2 && arg[0] === '-' && arg[1] !== '-') {
+ const option = this._findOption(`-${arg[1]}`);
+ if (option) {
+ if (option.required || option.optional) {
+ // option with value following in same argument
+ this.emit(`option:${option.name()}`, arg.slice(2));
+ } else {
+ // boolean option, emit and put back remainder of arg for further processing
+ this.emit(`option:${option.name()}`);
+ args.unshift(`-${arg.slice(2)}`);
+ }
+ continue;
+ }
+ }
+
+ // Look for known long flag with value, like --foo=bar
+ if (/^--[^=]+=/.test(arg)) {
+ const index = arg.indexOf('=');
+ const option = this._findOption(arg.slice(0, index));
+ if (option && (option.required || option.optional)) {
+ this.emit(`option:${option.name()}`, arg.slice(index + 1));
+ continue;
+ }
+ }
+
+ // looks like an option but unknown, unknowns from here
+ if (arg.length > 1 && arg[0] === '-') {
+ dest = unknown;
+ }
+
+ // add arg
+ dest.push(arg);
+ }
+
+ return { operands, unknown };
+ };
+
+ /**
+ * Return an object containing options as key-value pairs
+ *
+ * @return {Object}
+ * @api public
+ */
+ opts() {
+ if (this._storeOptionsAsProperties) {
+ // Preserve original behaviour so backwards compatible when still using properties
+ const result = {};
+ const len = this.options.length;
+
+ for (let i = 0; i < len; i++) {
+ const key = this.options[i].attributeName();
+ result[key] = key === this._versionOptionName ? this._version : this[key];
+ }
+ return result;
+ }
+
+ return this._optionValues;
+ };
+
+ /**
+ * Argument `name` is missing.
+ *
+ * @param {string} name
+ * @api private
+ */
+
+ missingArgument(name) {
+ const message = `error: missing required argument '${name}'`;
+ console.error(message);
+ this._exit(1, 'commander.missingArgument', message);
+ };
+
+ /**
+ * `Option` is missing an argument, but received `flag` or nothing.
+ *
+ * @param {Option} option
+ * @param {string} [flag]
+ * @api private
+ */
+
+ optionMissingArgument(option, flag) {
+ let message;
+ if (flag) {
+ message = `error: option '${option.flags}' argument missing, got '${flag}'`;
+ } else {
+ message = `error: option '${option.flags}' argument missing`;
+ }
+ console.error(message);
+ this._exit(1, 'commander.optionMissingArgument', message);
+ };
+
+ /**
+ * `Option` does not have a value, and is a mandatory option.
+ *
+ * @param {Option} option
+ * @api private
+ */
+
+ missingMandatoryOptionValue(option) {
+ const message = `error: required option '${option.flags}' not specified`;
+ console.error(message);
+ this._exit(1, 'commander.missingMandatoryOptionValue', message);
+ };
+
+ /**
+ * Unknown option `flag`.
+ *
+ * @param {string} flag
+ * @api private
+ */
+
+ unknownOption(flag) {
+ if (this._allowUnknownOption) return;
+ const message = `error: unknown option '${flag}'`;
+ console.error(message);
+ this._exit(1, 'commander.unknownOption', message);
+ };
+
+ /**
+ * Unknown command.
+ *
+ * @api private
+ */
+
+ unknownCommand() {
+ const partCommands = [this.name()];
+ for (let parentCmd = this.parent; parentCmd; parentCmd = parentCmd.parent) {
+ partCommands.unshift(parentCmd.name());
+ }
+ const fullCommand = partCommands.join(' ');
+ const message = `error: unknown command '${this.args[0]}'. See '${fullCommand} ${this._helpLongFlag}'.`;
+ console.error(message);
+ this._exit(1, 'commander.unknownCommand', message);
+ };
+
+ /**
+ * Set the program version to `str`.
+ *
+ * This method auto-registers the "-V, --version" flag
+ * which will print the version number when passed.
+ *
+ * You can optionally supply the flags and description to override the defaults.
+ *
+ * @param {string} str
+ * @param {string} [flags]
+ * @param {string} [description]
+ * @return {this | string} `this` command for chaining, or version string if no arguments
+ * @api public
+ */
+
+ version(str, flags, description) {
+ if (str === undefined) return this._version;
+ this._version = str;
+ flags = flags || '-V, --version';
+ description = description || 'output the version number';
+ const versionOption = new Option(flags, description);
+ this._versionOptionName = versionOption.long.substr(2) || 'version';
+ this.options.push(versionOption);
+ this.on('option:' + this._versionOptionName, () => {
+ process.stdout.write(str + '\n');
+ this._exit(0, 'commander.version', str);
+ });
+ return this;
+ };
+
+ /**
+ * Set the description to `str`.
+ *
+ * @param {string} str
+ * @param {Object} [argsDescription]
+ * @return {string|Command}
+ * @api public
+ */
+
+ description(str, argsDescription) {
+ if (str === undefined && argsDescription === undefined) return this._description;
+ this._description = str;
+ this._argsDescription = argsDescription;
+ return this;
+ };
+
+ /**
+ * Set an alias for the command.
+ *
+ * You may call more than once to add multiple aliases. Only the first alias is shown in the auto-generated help.
+ *
+ * @param {string} [alias]
+ * @return {string|Command}
+ * @api public
+ */
+
+ alias(alias) {
+ if (alias === undefined) return this._aliases[0]; // just return first, for backwards compatibility
+
+ let command = this;
+ if (this.commands.length !== 0 && this.commands[this.commands.length - 1]._executableHandler) {
+ // assume adding alias for last added executable subcommand, rather than this
+ command = this.commands[this.commands.length - 1];
+ }
+
+ if (alias === command._name) throw new Error('Command alias can\'t be the same as its name');
+
+ command._aliases.push(alias);
+ return this;
+ };
+
+ /**
+ * Set aliases for the command.
+ *
+ * Only the first alias is shown in the auto-generated help.
+ *
+ * @param {string[]} [aliases]
+ * @return {string[]|Command}
+ * @api public
+ */
+
+ aliases(aliases) {
+ // Getter for the array of aliases is the main reason for having aliases() in addition to alias().
+ if (aliases === undefined) return this._aliases;
+
+ aliases.forEach((alias) => this.alias(alias));
+ return this;
+ };
+
+ /**
+ * Set / get the command usage `str`.
+ *
+ * @param {string} [str]
+ * @return {String|Command}
+ * @api public
+ */
+
+ usage(str) {
+ if (str === undefined) {
+ if (this._usage) return this._usage;
+
+ const args = this._args.map((arg) => {
+ return humanReadableArgName(arg);
+ });
+ return '[options]' +
+ (this.commands.length ? ' [command]' : '') +
+ (this._args.length ? ' ' + args.join(' ') : '');
+ }
+
+ this._usage = str;
+ return this;
+ };
+
+ /**
+ * Get or set the name of the command
+ *
+ * @param {string} [str]
+ * @return {String|Command}
+ * @api public
+ */
+
+ name(str) {
+ if (str === undefined) return this._name;
+ this._name = str;
+ return this;
+ };
+
+ /**
+ * Return prepared commands.
+ *
+ * @return {Array}
+ * @api private
+ */
+
+ prepareCommands() {
+ const commandDetails = this.commands.filter((cmd) => {
+ return !cmd._hidden;
+ }).map((cmd) => {
+ const args = cmd._args.map((arg) => {
+ return humanReadableArgName(arg);
+ }).join(' ');
+
+ return [
+ cmd._name +
+ (cmd._aliases[0] ? '|' + cmd._aliases[0] : '') +
+ (cmd.options.length ? ' [options]' : '') +
+ (args ? ' ' + args : ''),
+ cmd._description
+ ];
+ });
+
+ if (this._lazyHasImplicitHelpCommand()) {
+ commandDetails.push([this._helpCommandnameAndArgs, this._helpCommandDescription]);
+ }
+ return commandDetails;
+ };
+
+ /**
+ * Return the largest command length.
+ *
+ * @return {number}
+ * @api private
+ */
+
+ largestCommandLength() {
+ const commands = this.prepareCommands();
+ return commands.reduce((max, command) => {
+ return Math.max(max, command[0].length);
+ }, 0);
+ };
+
+ /**
+ * Return the largest option length.
+ *
+ * @return {number}
+ * @api private
+ */
+
+ largestOptionLength() {
+ const options = [].slice.call(this.options);
+ options.push({
+ flags: this._helpFlags
+ });
+
+ return options.reduce((max, option) => {
+ return Math.max(max, option.flags.length);
+ }, 0);
+ };
+
+ /**
+ * Return the largest arg length.
+ *
+ * @return {number}
+ * @api private
+ */
+
+ largestArgLength() {
+ return this._args.reduce((max, arg) => {
+ return Math.max(max, arg.name.length);
+ }, 0);
+ };
+
+ /**
+ * Return the pad width.
+ *
+ * @return {number}
+ * @api private
+ */
+
+ padWidth() {
+ let width = this.largestOptionLength();
+ if (this._argsDescription && this._args.length) {
+ if (this.largestArgLength() > width) {
+ width = this.largestArgLength();
+ }
+ }
+
+ if (this.commands && this.commands.length) {
+ if (this.largestCommandLength() > width) {
+ width = this.largestCommandLength();
+ }
+ }
+
+ return width;
+ };
+
+ /**
+ * Return help for options.
+ *
+ * @return {string}
+ * @api private
+ */
+
+ optionHelp() {
+ const width = this.padWidth();
+ const columns = process.stdout.columns || 80;
+ const descriptionWidth = columns - width - 4;
+ function padOptionDetails(flags, description) {
+ return pad(flags, width) + ' ' + optionalWrap(description, descriptionWidth, width + 2);
+ };
+
+ // Explicit options (including version)
+ const help = this.options.map((option) => {
+ const fullDesc = option.description +
+ ((!option.negate && option.defaultValue !== undefined) ? ' (default: ' + JSON.stringify(option.defaultValue) + ')' : '');
+ return padOptionDetails(option.flags, fullDesc);
+ });
+
+ // Implicit help
+ const showShortHelpFlag = this._helpShortFlag && !this._findOption(this._helpShortFlag);
+ const showLongHelpFlag = !this._findOption(this._helpLongFlag);
+ if (showShortHelpFlag || showLongHelpFlag) {
+ let helpFlags = this._helpFlags;
+ if (!showShortHelpFlag) {
+ helpFlags = this._helpLongFlag;
+ } else if (!showLongHelpFlag) {
+ helpFlags = this._helpShortFlag;
+ }
+ help.push(padOptionDetails(helpFlags, this._helpDescription));
+ }
+
+ return help.join('\n');
+ };
+
+ /**
+ * Return command help documentation.
+ *
+ * @return {string}
+ * @api private
+ */
+
+ commandHelp() {
+ if (!this.commands.length && !this._lazyHasImplicitHelpCommand()) return '';
+
+ const commands = this.prepareCommands();
+ const width = this.padWidth();
+
+ const columns = process.stdout.columns || 80;
+ const descriptionWidth = columns - width - 4;
+
+ return [
+ 'Commands:',
+ commands.map((cmd) => {
+ const desc = cmd[1] ? ' ' + cmd[1] : '';
+ return (desc ? pad(cmd[0], width) : cmd[0]) + optionalWrap(desc, descriptionWidth, width + 2);
+ }).join('\n').replace(/^/gm, ' '),
+ ''
+ ].join('\n');
+ };
+
+ /**
+ * Return program help documentation.
+ *
+ * @return {string}
+ * @api public
+ */
+
+ helpInformation() {
+ let desc = [];
+ if (this._description) {
+ desc = [
+ this._description,
+ ''
+ ];
+
+ const argsDescription = this._argsDescription;
+ if (argsDescription && this._args.length) {
+ const width = this.padWidth();
+ const columns = process.stdout.columns || 80;
+ const descriptionWidth = columns - width - 5;
+ desc.push('Arguments:');
+ desc.push('');
+ this._args.forEach((arg) => {
+ desc.push(' ' + pad(arg.name, width) + ' ' + wrap(argsDescription[arg.name], descriptionWidth, width + 4));
+ });
+ desc.push('');
+ }
+ }
+
+ let cmdName = this._name;
+ if (this._aliases[0]) {
+ cmdName = cmdName + '|' + this._aliases[0];
+ }
+ let parentCmdNames = '';
+ for (let parentCmd = this.parent; parentCmd; parentCmd = parentCmd.parent) {
+ parentCmdNames = parentCmd.name() + ' ' + parentCmdNames;
+ }
+ const usage = [
+ 'Usage: ' + parentCmdNames + cmdName + ' ' + this.usage(),
+ ''
+ ];
+
+ let cmds = [];
+ const commandHelp = this.commandHelp();
+ if (commandHelp) cmds = [commandHelp];
+
+ const options = [
+ 'Options:',
+ '' + this.optionHelp().replace(/^/gm, ' '),
+ ''
+ ];
+
+ return usage
+ .concat(desc)
+ .concat(options)
+ .concat(cmds)
+ .join('\n');
+ };
+
+ /**
+ * Output help information for this command.
+ *
+ * When listener(s) are available for the helpLongFlag
+ * those callbacks are invoked.
+ *
+ * @api public
+ */
+
+ outputHelp(cb) {
+ if (!cb) {
+ cb = (passthru) => {
+ return passthru;
+ };
+ }
+ const cbOutput = cb(this.helpInformation());
+ if (typeof cbOutput !== 'string' && !Buffer.isBuffer(cbOutput)) {
+ throw new Error('outputHelp callback must return a string or a Buffer');
+ }
+ process.stdout.write(cbOutput);
+ this.emit(this._helpLongFlag);
+ };
+
+ /**
+ * You can pass in flags and a description to override the help
+ * flags and help description for your command.
+ *
+ * @param {string} [flags]
+ * @param {string} [description]
+ * @return {Command} `this` command for chaining
+ * @api public
+ */
+
+ helpOption(flags, description) {
+ this._helpFlags = flags || this._helpFlags;
+ this._helpDescription = description || this._helpDescription;
+
+ const splitFlags = this._helpFlags.split(/[ ,|]+/);
+
+ this._helpShortFlag = undefined;
+ if (splitFlags.length > 1) this._helpShortFlag = splitFlags.shift();
+
+ this._helpLongFlag = splitFlags.shift();
+
+ return this;
+ };
+
+ /**
+ * Output help information and exit.
+ *
+ * @param {Function} [cb]
+ * @api public
+ */
+
+ help(cb) {
+ this.outputHelp(cb);
+ // exitCode: preserving original behaviour which was calling process.exit()
+ // message: do not have all displayed text available so only passing placeholder.
+ this._exit(process.exitCode || 0, 'commander.help', '(outputHelp)');
+ };
+
+ /**
+ * Output help information and exit. Display for error situations.
+ *
+ * @api private
+ */
+
+ _helpAndError() {
+ this.outputHelp();
+ // message: do not have all displayed text available so only passing placeholder.
+ this._exit(1, 'commander.help', '(outputHelp)');
+ };
+};
+
+/**
+ * Expose the root command.
+ */
+
+exports = module.exports = new Command();
+exports.program = exports; // More explicit access to global command.
+
+/**
+ * Expose classes
+ */
+
+exports.Command = Command;
+exports.Option = Option;
+exports.CommanderError = CommanderError;
+
+/**
+ * Camel-case the given `flag`
+ *
+ * @param {string} flag
+ * @return {string}
+ * @api private
+ */
+
+function camelcase(flag) {
+ return flag.split('-').reduce((str, word) => {
+ return str + word[0].toUpperCase() + word.slice(1);
+ });
+}
+
+/**
+ * Pad `str` to `width`.
+ *
+ * @param {string} str
+ * @param {number} width
+ * @return {string}
+ * @api private
+ */
+
+function pad(str, width) {
+ const len = Math.max(0, width - str.length);
+ return str + Array(len + 1).join(' ');
+}
+
+/**
+ * Wraps the given string with line breaks at the specified width while breaking
+ * words and indenting every but the first line on the left.
+ *
+ * @param {string} str
+ * @param {number} width
+ * @param {number} indent
+ * @return {string}
+ * @api private
+ */
+function wrap(str, width, indent) {
+ const regex = new RegExp('.{1,' + (width - 1) + '}([\\s\u200B]|$)|[^\\s\u200B]+?([\\s\u200B]|$)', 'g');
+ const lines = str.match(regex) || [];
+ return lines.map((line, i) => {
+ if (line.slice(-1) === '\n') {
+ line = line.slice(0, line.length - 1);
+ }
+ return ((i > 0 && indent) ? Array(indent + 1).join(' ') : '') + line.trimRight();
+ }).join('\n');
+}
+
+/**
+ * Optionally wrap the given str to a max width of width characters per line
+ * while indenting with indent spaces. Do not wrap if insufficient width or
+ * string is manually formatted.
+ *
+ * @param {string} str
+ * @param {number} width
+ * @param {number} indent
+ * @return {string}
+ * @api private
+ */
+function optionalWrap(str, width, indent) {
+ // Detect manually wrapped and indented strings by searching for line breaks
+ // followed by multiple spaces/tabs.
+ if (str.match(/[\n]\s+/)) return str;
+ // Do not wrap to narrow columns (or can end up with a word per line).
+ const minWidth = 40;
+ if (width < minWidth) return str;
+
+ return wrap(str, width, indent);
+}
+
+/**
+ * Output help information if help flags specified
+ *
+ * @param {Command} cmd - command to output help for
+ * @param {Array} args - array of options to search for help flags
+ * @api private
+ */
+
+function outputHelpIfRequested(cmd, args) {
+ const helpOption = args.find(arg => arg === cmd._helpLongFlag || arg === cmd._helpShortFlag);
+ if (helpOption) {
+ cmd.outputHelp();
+ // (Do not have all displayed text available so only passing placeholder.)
+ cmd._exit(0, 'commander.helpDisplayed', '(outputHelp)');
+ }
+}
+
+/**
+ * Takes an argument and returns its human readable equivalent for help usage.
+ *
+ * @param {Object} arg
+ * @return {string}
+ * @api private
+ */
+
+function humanReadableArgName(arg) {
+ const nameOutput = arg.name + (arg.variadic === true ? '...' : '');
+
+ return arg.required
+ ? '<' + nameOutput + '>'
+ : '[' + nameOutput + ']';
+}
+
+/**
+ * Scan arguments and increment port number for inspect calls (to avoid conflicts when spawning new command).
+ *
+ * @param {string[]} args - array of arguments from node.execArgv
+ * @returns {string[]}
+ * @api private
+ */
+
+function incrementNodeInspectorPort(args) {
+ // Testing for these options:
+ // --inspect[=[host:]port]
+ // --inspect-brk[=[host:]port]
+ // --inspect-port=[host:]port
+ return args.map((arg) => {
+ let result = arg;
+ if (arg.indexOf('--inspect') === 0) {
+ let debugOption;
+ let debugHost = '127.0.0.1';
+ let debugPort = '9229';
+ let match;
+ if ((match = arg.match(/^(--inspect(-brk)?)$/)) !== null) {
+ // e.g. --inspect
+ debugOption = match[1];
+ } else if ((match = arg.match(/^(--inspect(-brk|-port)?)=([^:]+)$/)) !== null) {
+ debugOption = match[1];
+ if (/^\d+$/.test(match[3])) {
+ // e.g. --inspect=1234
+ debugPort = match[3];
+ } else {
+ // e.g. --inspect=localhost
+ debugHost = match[3];
+ }
+ } else if ((match = arg.match(/^(--inspect(-brk|-port)?)=([^:]+):(\d+)$/)) !== null) {
+ // e.g. --inspect=localhost:1234
+ debugOption = match[1];
+ debugHost = match[3];
+ debugPort = match[4];
+ }
+
+ if (debugOption && debugPort !== '0') {
+ result = `${debugOption}=${debugHost}:${parseInt(debugPort) + 1}`;
+ }
+ }
+ return result;
+ });
+}
generated by cgit (git 2.34.1) at 2024-10-22 06:34:47 +0000