Universalify fs-extra methods

Author: RyanZim

lib/__tests__/promise.test.js

@@ -0,0 +1,29 @@
+'use strict'
+
+/* eslint-env mocha */
+
+const fse = require('..')
+
+const methods = [
+  'copy',
+  'emptyDir',
+  'ensureFile',
+  'ensureDir',
+  'ensureLink',
+  'ensureSymlink',
+  'mkdirs',
+  'move',
+  'readJson',
+  'readJSON',
+  'remove',
+  'writeJson',
+  'writeJSON'
+]
+
+describe('promise support', () => {
+  methods.forEach(method => {
+    it(method, done => {
+      fse[method]().catch(() => done())
+    })
+  })
+})

lib/copy/index.js

@@ -1,3 +1,4 @@
+const u = require('universalify').fromCallback
 module.exports = {
-  copy: require('./copy')
+  copy: u(require('./copy'))
 }

lib/empty/index.js

@@ -1,11 +1,12 @@
 'use strict'
 
+const u = require('universalify').fromCallback
 const fs = require('fs')
 const path = require('path')
 const mkdir = require('../mkdirs')
 const remove = require('../remove')
 
-function emptyDir (dir, callback) {
+const emptyDir = u(function emptyDir (dir, callback) {
   callback = callback || function () {}
   fs.readdir(dir, (err, items) => {
     if (err) return mkdir.mkdirs(dir, callback)
@@ -23,7 +24,7 @@ function emptyDir (dir, callback) {
       })
     }
   })
-}
+})
 
 function emptyDirSync (dir) {
   let items

lib/ensure/file.js

@@ -1,5 +1,6 @@
 'use strict'
 
+const u = require('universalify').fromCallback
 const path = require('path')
 const fs = require('graceful-fs')
 const mkdir = require('../mkdirs')
@@ -37,9 +38,6 @@ function createFileSync (file) {
 }
 
 module.exports = {
-  createFile,
-  createFileSync,
-  // alias
-  ensureFile: createFile,
-  ensureFileSync: createFileSync
+  createFile: u(createFile),
+  createFileSync
 }

lib/ensure/link.js

@@ -1,5 +1,6 @@
 'use strict'
 
+const u = require('universalify').fromCallback
 const path = require('path')
 const fs = require('graceful-fs')
 const mkdir = require('../mkdirs')
@@ -52,9 +53,6 @@ function createLinkSync (srcpath, dstpath, callback) {
 }
 
 module.exports = {
-  createLink,
-  createLinkSync,
-  // alias
-  ensureLink: createLink,
-  ensureLinkSync: createLinkSync
+  createLink: u(createLink),
+  createLinkSync
 }

lib/ensure/symlink.js

@@ -1,5 +1,6 @@
 'use strict'
 
+const u = require('universalify').fromCallback
 const path = require('path')
 const fs = require('graceful-fs')
 const _mkdirs = require('../mkdirs')
@@ -56,9 +57,6 @@ function createSymlinkSync (srcpath, dstpath, type, callback) {
 }
 
 module.exports = {
-  createSymlink,
-  createSymlinkSync,
-  // alias
-  ensureSymlink: createSymlink,
-  ensureSymlinkSync: createSymlinkSync
+  createSymlink: u(createSymlink),
+  createSymlinkSync
 }

lib/fs/index.js

@@ -4,36 +4,37 @@ const u = require('universalify').fromCallback
 const fs = require('graceful-fs')
 
 const api = [
-  'rename',
-  'ftruncate',
-  'chown',
-  'fchown',
-  'lchown',
+  'access',
+  'appendFile',
   'chmod',
+  'chown',
+  'close',
   'fchmod',
-  'stat',
-  'lstat',
+  'fchown',
+  'fdatasync',
   'fstat',
+  'fsync',
+  'ftruncate',
+  'futimes',
+  'lchown',
   'link',
-  'symlink',
+  'lstat',
+  'mkdir',
+  'open',
+  'read',
+  'readFile',
+  'readdir',
   'readlink',
   'realpath',
-  'unlink',
+  'rename',
   'rmdir',
-  'mkdir',
-  'readdir',
-  'close',
-  'open',
+  'stat',
+  'symlink',
+  'truncate',
+  'unlink',
   'utimes',
-  'futimes',
-  'fsync',
-  'fdatasync',
   'write',
-  'read',
-  'readFile',
-  'writeFile',
-  'appendFile',
-  'truncate'
+  'writeFile'
 ]
 // fs.mkdtemp() was added in Node.js v5.10.0, so check if it exists
 typeof fs.mkdtemp === 'function' && api.push('mkdtemp')
@@ -52,13 +53,9 @@ api.forEach(method => {
 // since we are a drop-in replacement for the native module
 exports.exists = function (filename, callback) {
   if (typeof callback === 'function') {
-    return fs.exists(filename, function (exists) {
-      callback(exists)
-    })
+    return fs.exists(filename, callback)
   }
-  return new Promise(function (resolve) {
-    return fs.exists(filename, function (exists) {
-      resolve(exists)
-    })
+  return new Promise(resolve => {
+    return fs.exists(filename, resolve)
   })
 }

lib/json/__tests__/output-json.test.js

@@ -34,6 +34,14 @@ describe('json', () => {
       })
     })
 
+    it('should support Promises', () => {
+      const file = path.join(TEST_DIR, 'this-dir', 'prob-does-not', 'exist', 'file.json')
+      assert(!fs.existsSync(file))
+
+      const data = {name: 'JP'}
+      return outputJson(file, data)
+    })
+
     describe('> when an option is passed, like JSON replacer', () => {
       it('should pass the option along to jsonfile module', done => {
         const file = path.join(TEST_DIR, 'this-dir', 'does-not', 'exist', 'really', 'file.json')

lib/json/index.js

@@ -1,11 +1,16 @@
 'use strict'
 
+const u = require('universalify').fromCallback
 const jsonFile = require('./jsonfile')
 
 jsonFile.outputJsonSync = require('./output-json-sync')
-jsonFile.outputJson = require('./output-json')
+jsonFile.outputJson = u(require('./output-json'))
 // aliases
-jsonFile.outputJSONSync = require('./output-json-sync')
-jsonFile.outputJSON = require('./output-json')
+jsonFile.outputJSONSync = jsonFile.outputJSONSync
+jsonFile.outputJSON = jsonFile.outputJson
+jsonFile.writeJSON = jsonFile.writeJson
+jsonFile.writeJSONSync = jsonFile.writeJsonSync
+jsonFile.readJSON = jsonFile.readJson
+jsonFile.readJSONSync = jsonFile.readJsonSync
 
 module.exports = jsonFile

lib/json/jsonfile.js

@@ -1,15 +1,12 @@
 'use strict'
 
+const u = require('universalify').fromCallback
 const jsonFile = require('jsonfile')
 
 module.exports = {
   // jsonfile exports
-  readJson: jsonFile.readFile,
-  readJSON: jsonFile.readFile,
+  readJson: u(jsonFile.readFile),
   readJsonSync: jsonFile.readFileSync,
-  readJSONSync: jsonFile.readFileSync,
-  writeJson: jsonFile.writeFile,
-  writeJSON: jsonFile.writeFile,
-  writeJsonSync: jsonFile.writeFileSync,
-  writeJSONSync: jsonFile.writeFileSync
+  writeJson: u(jsonFile.writeFile),
+  writeJsonSync: jsonFile.writeFileSync
 }