hunk.code_window: import semver = require('semver')
   import path = require('path')
   import fs = require('mz/fs')
   import {PackageSpec} from '../install'
   import {Package} from '../types'
  
hunk.labels: replace keep keep keep keep
hunk.file_path: src/install/isAvailable.ts
hunk.type: replace
file: {
    "name": "tar-pkg",
    "version": "1.0.0"
  }
  