Add fs helper

src/helpers/db/db.spec.js

@@ -1,15 +1,12 @@
 import os from 'os'
 import path from 'path'
-import fs from 'fs'
 import rimrafModule from 'rimraf'
 
 import db from 'helpers/db'
 import { promisify } from 'helpers/promise'
+import { fsReadFile, fsWriteFile, fsMkdir } from 'helpers/fs'
 
 const rimraf = promisify(rimrafModule)
-const fsReadFile = promisify(fs.readFile)
-const fsWriteFile = promisify(fs.writeFile)
-const fsMkdir = promisify(fs.mkdir)
 
 const accountsTransform = {
   get: accounts => accounts.map(account => ({ ...account, balance: Number(account.balance) })),

src/helpers/db/index.js

@@ -1,6 +1,5 @@
 // @flow
 
-import fs from 'fs'
 import path from 'path'
 import crypto from 'crypto'
 import cloneDeep from 'lodash/cloneDeep'
@@ -9,6 +8,7 @@ import get from 'lodash/get'
 import set from 'lodash/set'
 
 import logger from 'logger'
+import { fsReadFile, fsUnlink } from 'helpers/fs'
 import { promisify, debounce } from 'helpers/promise'
 
 import { NoDBPathGiven, DBWrongPassword } from 'config/errors'
@@ -18,8 +18,6 @@ type Transform = {
   set: any => any,
 }
 
-const fsReadFile = promisify(fs.readFile)
-const fsUnlink = promisify(fs.unlink)
 const writeFileAtomic = promisify(writeFileAtomicModule)
 
 const ALGORITHM = 'aes-256-cbc'

src/helpers/fs.js

@@ -0,0 +1,10 @@
+// @flow
+
+import { promisify } from 'helpers/promise'
+import fs from 'fs'
+
+export const fsReadFile = promisify(fs.readFile)
+export const fsReaddir = promisify(fs.readdir)
+export const fsWriteFile = promisify(fs.writeFile)
+export const fsMkdir = promisify(fs.mkdir)
+export const fsUnlink = promisify(fs.unlink)

src/migrations/migrations.js

@@ -1,16 +1,12 @@
 // @flow
 
-import fs from 'fs'
 import path from 'path'
 
-import { promisify } from 'helpers/promise'
+import { fsReadFile, fsUnlink } from 'helpers/fs'
 import db from 'helpers/db'
 
 import type { Migration } from './types'
 
-const fsReadfile = promisify(fs.readFile)
-const fsUnlink = promisify(fs.unlink)
-
 const migrations: Migration[] = [
   {
     doc: 'merging multiple db files into one app file',
@@ -54,13 +50,13 @@ async function getFileData(dbPath, fileName) {
   const filePath = path.join(dbPath, `${fileName}.json`)
   let finalData
   try {
-    const fileContent = await fsReadfile(filePath, 'utf-8')
+    const fileContent = await fsReadFile(filePath, 'utf-8')
     const { data } = JSON.parse(fileContent)
     finalData = data
   } catch (err) {
     // we assume we are in that case because file is encrypted
     if (err instanceof SyntaxError) {
-      const buf = await fsReadfile(filePath)
+      const buf = await fsReadFile(filePath)
       return buf.toString('base64')
     }
     // will be stripped down by JSON.stringify

src/migrations/migrations.spec.js

@@ -1,4 +1,3 @@
-import fs from 'fs'
 import os from 'os'
 import path from 'path'
 import { spawn } from 'child_process'
@@ -6,13 +5,12 @@ import rimrafModule from 'rimraf'
 import { BigNumber } from 'bignumber.js'
 
 import { promisify } from 'helpers/promise'
+import { fsReadFile, fsReaddir } from 'helpers/fs'
 import { runMigrations } from 'migrations'
 import { decodeAccountsModel, encodeAccountsModel } from 'reducers/accounts'
 import db from 'helpers/db'
 
 const rimraf = promisify(rimrafModule)
-const fsReaddir = promisify(fs.readdir)
-const fsReadFile = promisify(fs.readFile)
 
 const tmpDir = os.tmpdir()