hunk.code_window:  * directory on a file system
    */
   export type DirectoryResolution = ResolutionBase & {
     type: 'directory',
     root: string,
     link?: boolean,
   }
   /**
    * Git repository
  
hunk.labels: keep keep keep keep keep replace keep keep keep keep
hunk.file_path: src/resolve/index.ts
hunk.type: replace
file: import {cleanCache, installPkgs, install} from '../src'
  import {add as addDistTag} from './support/distTags'
  import testDefaults from './support/testDefaults'
  import tape = require('tape')
  import promisifyTape from 'tape-promise'
  import exists = require('exists-file')
  import path = require('path')
  import prepare from './support/prepare'
  
  const test = promisifyTape(tape)
  
  test('cache clean removes cache', async function (t) {
    prepare(t)
  
    const opts = testDefaults({global: true})
  
    await installPkgs(['is-positive'], opts)
  
    const cache = path.join(opts.globalPath, 'cache')
  
    t.ok(await exists(cache), 'cache is created')
  
    await cleanCache(opts.globalPath)
  
    t.ok(!await exists(cache), 'cache is removed')
  })
  
  test('should fail to update when requests are cached', async function (t) {
    const project = prepare(t)
  
    const latest = 'stable'
    const cacheTTL = 60 * 60
  
    await addDistTag('dep-of-pkg-with-1-dep', '100.0.0', latest)
  
    await installPkgs(['pkg-with-1-dep'], testDefaults({save: true, tag: latest, cacheTTL}))
  
    await project.storeHas('dep-of-pkg-with-1-dep', '100.0.0')
  
    await addDistTag('dep-of-pkg-with-1-dep', '100.1.0', latest)
  
    await install(testDefaults({depth: 1, tag: latest, cacheTTL}))
  
    await project.storeHas('dep-of-pkg-with-1-dep', '100.0.0')
  })
  
  test('should skip cahe even if it exists when cacheTTL = 0', async function (t) {
    const project = prepare(t)
  
    const latest = 'stable'
  
    await addDistTag('dep-of-pkg-with-1-dep', '100.0.0', latest)
  
    await installPkgs(['pkg-with-1-dep'], testDefaults({save: true, tag: latest, cacheTTL: 60 * 60}))
  
    await project.storeHas('dep-of-pkg-with-1-dep', '100.0.0')
  
    await addDistTag('dep-of-pkg-with-1-dep', '100.1.0', latest)
  
    await install(testDefaults({depth: 1, tag: latest, cacheTTL: 0}))
  
    await project.storeHas('dep-of-pkg-with-1-dep', '100.1.0')
  })
  