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- 'use strict';
- var path = require('path');
- var minimist = require('minimist');
- var objectAssign = require('object-assign');
- var camelcaseKeys = require('camelcase-keys');
- var decamelize = require('decamelize');
- var mapObj = require('map-obj');
- var trimNewlines = require('trim-newlines');
- var redent = require('redent');
- var readPkgUp = require('read-pkg-up');
- var loudRejection = require('loud-rejection');
- var normalizePackageData = require('normalize-package-data');
-
- // get the uncached parent
- delete require.cache[__filename];
- var parentDir = path.dirname(module.parent.filename);
-
- module.exports = function (opts, minimistOpts) {
- loudRejection();
-
- if (Array.isArray(opts) || typeof opts === 'string') {
- opts = {help: opts};
- }
-
- opts = objectAssign({
- pkg: readPkgUp.sync({
- cwd: parentDir,
- normalize: false
- }).pkg,
- argv: process.argv.slice(2)
- }, opts);
-
- minimistOpts = objectAssign({}, minimistOpts);
-
- minimistOpts.default = mapObj(minimistOpts.default || {}, function (key, value) {
- return [decamelize(key, '-'), value];
- });
-
- if (Array.isArray(opts.help)) {
- opts.help = opts.help.join('\n');
- }
-
- var pkg = typeof opts.pkg === 'string' ? require(path.join(parentDir, opts.pkg)) : opts.pkg;
- var argv = minimist(opts.argv, minimistOpts);
- var help = redent(trimNewlines(opts.help || ''), 2);
-
- normalizePackageData(pkg);
-
- process.title = pkg.bin ? Object.keys(pkg.bin)[0] : pkg.name;
-
- var description = opts.description;
- if (!description && description !== false) {
- description = pkg.description;
- }
-
- help = (description ? '\n ' + description + '\n' : '') + (help ? '\n' + help : '\n');
-
- var showHelp = function (code) {
- console.log(help);
- process.exit(code || 0);
- };
-
- if (argv.version && opts.version !== false) {
- console.log(typeof opts.version === 'string' ? opts.version : pkg.version);
- process.exit();
- }
-
- if (argv.help && opts.help !== false) {
- showHelp();
- }
-
- var _ = argv._;
- delete argv._;
-
- return {
- input: _,
- flags: camelcaseKeys(argv),
- pkg: pkg,
- help: help,
- showHelp: showHelp
- };
- };
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