fix build. circular deps which confused flow and bundler. add cache a…

…nd parallel flags to make build faster

shared/actions/fs/platform-specific.desktop.js

@@ -15,8 +15,6 @@ import {spawn, execFileSync} from 'child_process'
 import path from 'path'
 import {putActionIfOnPath, navigateTo, navigateAppend, navigateUp} from '../route-tree'
 
-import {copyToDownloadDir} from './platform-specific'
-
 type pathType = 'file' | 'directory'
 
 // pathToURL takes path and converts to (file://) url.
@@ -284,6 +282,10 @@ function openFinderPopup(action: FsGen.OpenFinderPopupPayload) {
   )
 }
 
+function copyToDownloadDir(path: string, mime: string) {
+  return new Promise((resolve, reject) => resolve())
+}
+
 function* platformSpecificSaga(): Saga.SagaGenerator<any, any> {
   yield Saga.safeTakeEveryPure(FsGen.openInFileUI, openInFileUISaga)
   yield Saga.safeTakeEvery(FsGen.fuseStatus, fuseStatusSaga)

shared/actions/fs/platform-specific.ios.js

@@ -1,9 +1,12 @@
 // @flow
 import * as Saga from '../../util/saga'
 import * as FsGen from '../fs-gen'
-import {copyToDownloadDir} from './platform-specific'
 import {share, save} from './common.native'
 
+function copyToDownloadDir(path: string, mime: string) {
+  return new Promise((resolve, reject) => resolve())
+}
+
 function* platformSpecificSaga(): Saga.SagaGenerator<any, any> {
   yield Saga.safeTakeEveryPure(FsGen.share, share)
   yield Saga.safeTakeEvery(FsGen.save, save)

shared/actions/fs/platform-specific.js.flow

@@ -1,8 +1,5 @@
 // @flow
 import * as Saga from '../../util/saga'
 
-export function copyToDownloadDir(path: string, mime: string) {
-  return new Promise((resolve, reject) => resolve())
-}
-
-export function* platformSpecificSaga(): Saga.SagaGenerator<any, any> {}
+declare export function copyToDownloadDir(path: string, mime: string): Promise<void>
+declare export function platformSpecificSaga(): Saga.SagaGenerator<any, any>

shared/desktop/webpack.config.babel.js

@@ -119,6 +119,8 @@ const config = (_, {mode}) => {
             optimization: {
               minimizer: [
                 new UglifyJSPlugin({
+                  cache: true,
+                  parallel: true,
                   sourceMap: true,
                   uglifyOptions: {
                     compress: {