internal…

module-name.js
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			'use strict'
			var path = require('path')
			var validate = require('aproba')

			module.exports = moduleName
			module.exports.test = {}

			module.exports.test.pathToPackageName = pathToPackageName
			function pathToPackageName (dir) {
			if (dir == null) return ''
			if (dir === '') return ''
			var name = path.relative(path.resolve(dir, '..'), dir)
			var scoped = path.relative(path.resolve(dir, '../..'), dir)
			if (scoped[0] === '@') return scoped.replace(/\\/g, '/')
			return name
			}

			module.exports.test.isNotEmpty = isNotEmpty
			function isNotEmpty (str) {
			return str != null && str !== ''
			}

			var unknown = 0
			function moduleName (tree) {
			validate('O', arguments)
			var pkg = tree.package \|\| tree
			if (isNotEmpty(pkg.name)) return pkg.name
			var pkgName = pathToPackageName(tree.path)
			if (pkgName !== '') return pkgName
			if (tree._invalidName != null) return tree._invalidName
			tree._invalidName = '!invalid#' + (++unknown)
			return tree._invalidName
			}