Compatibility with running inside electron

.gitignore

@@ -7,3 +7,4 @@
 .DS_Store
 .node-version
 npm-debug.log
+.idea

lib/asar.js

@@ -1,5 +1,5 @@
 'use strict'
-const fs = require('fs')
+const fs = process.versions.electron ? require('original-fs') : require('fs')
 const path = require('path')
 const minimatch = require('minimatch')
 const mkdirp = require('mkdirp')

lib/crawlfs.js

@@ -1,5 +1,5 @@
 'use strict'
-const fs = require('fs')
+const fs = process.versions.electron ? require('original-fs') : require('fs')
 const glob = require('glob')
 
 module.exports = function (dir, options, callback) {

lib/disk.js

@@ -1,5 +1,5 @@
 'use strict'
-const fs = require('fs')
+const fs = process.versions.electron ? require('original-fs') : require('fs')
 const path = require('path')
 const mkdirp = require('mkdirp')
 const pickle = require('chromium-pickle-js')

lib/filesystem.js

@@ -1,5 +1,5 @@
 'use strict'
-const fs = require('fs')
+const fs = process.versions.electron ? require('original-fs') : require('fs')
 const path = require('path')
 const tmp = require('tmp')
 const UINT64 = require('cuint').UINT64

lib/snapshot.js

@@ -1,5 +1,5 @@
 'use strict'
-const fs = require('fs')
+const fs = process.versions.electron ? require('original-fs') : require('fs')
 const path = require('path')
 const mksnapshot = require('mksnapshot')
 const vm = require('vm')

package.json

@@ -19,7 +19,7 @@
     "url": "https://github.com/electron/asar/issues"
   },
   "scripts": {
-    "test": "mocha --reporter spec && npm run lint",
+    "test": "electron-mocha --reporter spec && mocha --reporter spec && npm run lint",
     "lint": "standard"
   },
   "standard": {
@@ -38,6 +38,8 @@
     "tmp": "0.0.28"
   },
   "devDependencies": {
+    "electron": "^1.6.2",
+    "electron-mocha": "^3.4.0",
     "lodash": "^4.2.1",
     "mocha": "^2.0.1",
     "rimraf": "^2.5.1",

test/api-spec.js

@@ -1,6 +1,6 @@
 'use strict'
 const assert = require('assert')
-const fs = require('fs')
+const fs = process.versions.electron ? require('original-fs') : require('fs')
 const os = require('os')
 const path = require('path')
 const rimraf = require('rimraf')
@@ -12,7 +12,7 @@ const transform = require('./util/transformStream')
 
 describe('api', function () {
   beforeEach(function () {
-    rimraf.sync(path.join(__dirname, '..', 'tmp'))
+    rimraf.sync(path.join(__dirname, '..', 'tmp'), fs)
   })
   it('should create archive from directory', function (done) {
     asar.createPackage('test/input/packthis/', 'tmp/packthis-api.asar', function (error) {

test/cli-spec.js

@@ -1,7 +1,7 @@
 'use strict'
 const assert = require('assert')
 const exec = require('child_process').exec
-const fs = require('fs')
+const fs = process.versions.electron ? require('original-fs') : require('fs')
 const os = require('os')
 const path = require('path')
 const rimraf = require('rimraf')
@@ -11,7 +11,7 @@ const compFiles = require('./util/compareFiles')
 
 describe('command line interface', function () {
   beforeEach(function () {
-    rimraf.sync(path.join(__dirname, '..', 'tmp'))
+    rimraf.sync(path.join(__dirname, '..', 'tmp'), fs)
   })
   it('should create archive from directory', function (done) {
     exec('node bin/asar p test/input/packthis/ tmp/packthis-cli.asar', function (error, stdout, stderr) {

test/util/compareDirectories.js

@@ -1,5 +1,5 @@
 'use strict'
-const fs = require('fs')
+const fs = process.versions.electron ? require('original-fs') : require('fs')
 const path = require('path')
 
 const _ = require('lodash')

test/util/compareFiles.js

@@ -1,6 +1,6 @@
 'use strict'
 const assert = require('assert')
-const fs = require('fs')
+const fs = process.versions.electron ? require('original-fs') : require('fs')
 
 module.exports = function (filepathA, filepathB) {
   const actual = fs.readFileSync(filepathA, 'utf8')