Decaffeinate StorageFolder

src/storage-folder.coffee

@@ -1,39 +0,0 @@
-path = require "path"
-fs = require "fs-plus"
-
-module.exports =
-class StorageFolder
-  constructor: (containingPath) ->
-    @path = path.join(containingPath, "storage") if containingPath?
-
-  clear: ->
-    return unless @path?
-
-    try
-      fs.removeSync(@path)
-    catch error
-      console.warn "Error deleting #{@path}", error.stack, error
-
-  storeSync: (name, object) ->
-    return unless @path?
-
-    fs.writeFileSync(@pathForKey(name), JSON.stringify(object), 'utf8')
-
-  load: (name) ->
-    return unless @path?
-
-    statePath = @pathForKey(name)
-    try
-      stateString = fs.readFileSync(statePath, 'utf8')
-    catch error
-      unless error.code is 'ENOENT'
-        console.warn "Error reading state file: #{statePath}", error.stack, error
-      return undefined
-
-    try
-      JSON.parse(stateString)
-    catch error
-      console.warn "Error parsing state file: #{statePath}", error.stack, error
-
-  pathForKey: (name) -> path.join(@getPath(), name)
-  getPath: -> @path

src/storage-folder.js

@@ -0,0 +1,57 @@
+const path = require('path')
+const fs = require('fs-plus')
+
+module.exports =
+class StorageFolder {
+  constructor (containingPath) {
+    if (containingPath) {
+      this.path = path.join(containingPath, 'storage')
+    }
+  }
+
+  clear () {
+    if (!this.path) return
+
+    try {
+      fs.removeSync(this.path)
+    } catch (error) {
+      console.warn(`Error deleting ${this.path}`, error.stack, error)
+    }
+  }
+
+  storeSync (name, object) {
+    if (!this.path) return
+
+    fs.writeFileSync(this.pathForKey(name), JSON.stringify(object), 'utf8')
+  }
+
+  load (name) {
+    if (!this.path) return
+
+    const statePath = this.pathForKey(name)
+
+    let stateString
+    try {
+      stateString = fs.readFileSync(statePath, 'utf8')
+    } catch (error) {
+      if (error.code !== 'ENOENT') {
+        console.warn(`Error reading state file: ${statePath}`, error.stack, error)
+      }
+      return null
+    }
+
+    try {
+      return JSON.parse(stateString)
+    } catch (error) {
+      console.warn(`Error parsing state file: ${statePath}`, error.stack, error)
+    }
+  }
+
+  pathForKey (name) {
+    return path.join(this.getPath(), name)
+  }
+
+  getPath () {
+    return this.path
+  }
+}