1.22.5

global-prefix-set-in-userconfig.js
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			var common = require('../common-tap.js')
			var test = require('tap').test
			var rimraf = require('rimraf')
			var prefix = __filename.replace(/\.js$/, '')
			var rcfile = __filename.replace(/\.js$/, '.npmrc')
			var fs = require('fs')
			var conf = 'prefix = ' + prefix + '\n'

			test('setup', function (t) {
			rimraf.sync(prefix)
			fs.writeFileSync(rcfile, conf)
			t.pass('ready')
			t.end()
			})

			test('run command', function (t) {
			var args = ['prefix', '-g', '--userconfig=' + rcfile]
			common.npm(args, {env: {}}, function (er, code, so) {
			if (er) throw er
			t.notOk(code, 'npm prefix exited with code 0')
			t.equal(so.trim(), prefix)
			t.end()
			})
			})

			test('made dir', function (t) {
			t.ok(fs.statSync(prefix).isDirectory())
			t.end()
			})

			test('cleanup', function (t) {
			rimraf.sync(prefix)
			rimraf.sync(rcfile)
			t.pass('clean')
			t.end()
			})