internal…

config-edit.js
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			var fs = require('fs')
			var path = require('path')

			var mkdirp = require('mkdirp')
			var rimraf = require('rimraf')
			var test = require('tap').test
			var common = require('../common-tap.js')

			var pkg = path.resolve(__dirname, 'npm-global-edit')

			var editorSrc = function () { /*
			#!/usr/bin/env node
			var fs = require('fs')
			if (fs.existsSync(process.argv[2])) {
			console.log('success')
			} else {
			console.log('error')
			process.exit(1)
			}
			*/ }.toString().split('\n').slice(1, -1).join('\n')
			var editorPath = path.join(pkg, 'editor')

			test('setup', function (t) {
			cleanup(function (er) {
			t.ifError(er, 'old directory removed')

			mkdirp(pkg, '0777', function (er) {
			fs.writeFileSync(editorPath, editorSrc)
			fs.chmodSync(editorPath, '0777')
			t.ifError(er, 'created package directory correctly')
			t.end()
			})
			})
			})

			test('saving configs', function (t) {
			var opts = {
			cwd: pkg,
			env: {
			PATH: process.env.PATH,
			// We rely on the cwd + relative path combo here because otherwise,
			// this test will break if there's spaces in the editorPath
			EDITOR: 'node editor'
			}
			}
			common.npm(
			[
			'config',
			'--prefix', pkg,
			'--global',
			'edit'
			],
			opts,
			function (err, code, stdout, stderr) {
			t.ifError(err, 'command ran without issue')

			t.equal(stderr, '', 'got nothing on stderr')
			t.equal(code, 0, 'exit ok')
			t.equal(stdout, 'success\n', 'got success message')
			t.end()
			}
			)
			})

			test('cleanup', function (t) {
			cleanup(function (er) {
			t.ifError(er, 'test directory removed OK')
			t.end()
			})
			})

			function cleanup (cb) {
			rimraf(pkg, cb)
			}