typescript - "Cannot read property toLowerCase of undefined"在 ionic 构建 ios 上

Question

如果我尝试使用以下命令在 Ionic3 中构建 ios，则会出现“无法读取未定义的 LowerCase 属性”错误:ionic cordova build ios。

这里是带有 --verbose 的日志:

> ionic-app-scripts build --target cordova --platform ios
[12:09:39]  ionic-app-scripts 3.1.11 
[12:09:39]  build dev started ... 
[12:09:39]  clean started ... 
[12:09:39]  clean finished in 4 ms 
[12:09:39]  copy started ... 
[12:09:39]  deeplinks started ... 
[12:09:40]  deeplinks finished in 104 ms 
[12:09:40]  transpile started ... 
[12:09:43]  transpile finished in 3.15 s 
[12:09:43]  preprocess started ... 
[12:09:43]  preprocess finished in less than 1 ms 
[12:09:43]  webpack started ... 
[12:09:43]  copy finished in 3.42 s 
[12:09:55]  webpack finished in 11.83 s 
[12:09:55]  sass started ... 
Without `from` option PostCSS could generate wrong source map and will not find Browserslist config. Set it to CSS file path or to `undefined` to prevent this warning.
[12:09:57]  sass finished in 2.10 s 
[12:09:57]  postprocess started ... 
[12:09:57]  postprocess finished in 9 ms 
[12:09:57]  lint started ... 
[12:09:57]  build dev finished in 17.38 s 
[12:10:02]  tslint: src/pages/lastname/lastname.ts, line: 43 
            'NameCollection' is declared but its value is never read. 

      L42:  private AccountDoc: AngularFirestoreDocument<Account>;
      L43:  private NameCollection: AngularFirestoreCollection<Name>;
      L44:  private NameDoc: AngularFirestoreDocument<Name>;

            Property 'iap' is declared but its value is never read. 

[12:10:02]  tslint: src/pages/lastname/lastname.ts, line: 56 
      L56:  e http: HttpClient, private platform: Platform, private iap: InAppPurchase, private storage: Storage, privat

            Property 'translateService' is declared but its value is never read. 

[12:10:02]  tslint: src/app/app.component.ts, line: 28 
      L28:  reen, private storage: Storage, private afs: AngularFirestore, private translateService: TranslateService) {
      L29:      platform.ready().then(() => {

[12:10:02]  tslint: src/app/app.component.ts, line: 13 
            All imports on this line are unused. 

      L12:  import 'rxjs/add/operator/take';
      L13:  import { take } from 'rxjs/operators/take'

[12:10:02]  lint finished in 5.36 s 
> cordova build ios
[iOS] Setting main language to: English
[iOS] Setting also additional languagees to: it,de,en
Error: Cannot read property 'toLowerCase' of undefined
[ERROR] An error occurred while running subprocess cordova.

        cordova build ios exited with exit code 1.

        Re-running this command with the --verbose flag may provide more information.
➜  originjw git:(master) ✗ ionic cordova build ios --verbose                  
  ionic:cli-utils Terminal info: { tty: true, ci: false } +0ms
  ionic:cli-utils CLI global options: { _: [ 'cordova', 'build', 'ios' ], help: null, h: null, verbose: true, quiet: null, interactive: true, color: true, confirm: null, json: null, project: null, '--': [] } +3ms
  ionic:cli-utils:lib:project Project type from config: Ionic Angular 3 (ionic-angular) +0ms
  ionic:cli-utils Project name: undefined +285ms
  ionic:cli Context: { binPath: '/usr/local/lib/node_modules/ionic/bin/ionic', libPath: '/usr/local/lib/node_modules/ionic', execPath: '/Users/Daniele/Berufliches/JW Projects/OriginJW/originjw', version: '4.1.0' } +0ms
  ionic:cli-utils:lib:integrations:cordova:config Using config.xml: /Users/Daniele/Berufliches/JW Projects/OriginJW/originjw/config.xml +0ms
  ionic:cli-utils:lib:hooks Looking for ionic:build:before npm script. +0ms
  ionic:cli-utils:lib:project:ionic-angular:build Looking for ionic:build npm script. +0ms
  ionic:cli-utils:lib:project:ionic-angular:build Found ionic:build, but it is the default. Not running. +11ms
> ionic-app-scripts build --target cordova --platform ios
[12:10:31]  ionic-app-scripts 3.1.11 
[12:10:31]  build dev started ... 
[12:10:31]  clean started ... 
[12:10:31]  clean finished in 6 ms 
[12:10:31]  copy started ... 
[12:10:31]  deeplinks started ... 
[12:10:31]  deeplinks finished in 116 ms 
[12:10:31]  transpile started ... 
[12:10:35]  transpile finished in 3.27 s 
[12:10:35]  preprocess started ... 
[12:10:35]  preprocess finished in less than 1 ms 
[12:10:35]  webpack started ... 
[12:10:35]  copy finished in 3.63 s 
[12:10:47]  webpack finished in 12.26 s 
[12:10:47]  sass started ... 
Without `from` option PostCSS could generate wrong source map and will not find Browserslist config. Set it to CSS file path or to `undefined` to prevent this warning.
[12:10:49]  sass finished in 1.74 s 
[12:10:49]  postprocess started ... 
[12:10:49]  postprocess finished in 10 ms 
[12:10:49]  lint started ... 
[12:10:49]  build dev finished in 17.66 s 
[12:10:53]  tslint: src/pages/lastname/lastname.ts, line: 43 
            'NameCollection' is declared but its value is never read. 

      L42:  private AccountDoc: AngularFirestoreDocument<Account>;
      L43:  private NameCollection: AngularFirestoreCollection<Name>;
      L44:  private NameDoc: AngularFirestoreDocument<Name>;

            Property 'iap' is declared but its value is never read. 

[12:10:53]  tslint: src/pages/lastname/lastname.ts, line: 56 
      L56:  e http: HttpClient, private platform: Platform, private iap: InAppPurchase, private storage: Storage, privat

            Property 'translateService' is declared but its value is never read. 

[12:10:53]  tslint: src/app/app.component.ts, line: 28 
      L28:  reen, private storage: Storage, private afs: AngularFirestore, private translateService: TranslateService) {
      L29:      platform.ready().then(() => {

[12:10:53]  tslint: src/app/app.component.ts, line: 13 
            All imports on this line are unused. 

      L12:  import 'rxjs/add/operator/take';
      L13:  import { take } from 'rxjs/operators/take'

[12:10:53]  lint finished in 4.32 s 
  ionic:cli-utils:lib:hooks Looking for ionic:build:after npm script. +25s
> cordova build ios --verbose
No scripts found for hook "before_build".
No scripts found for hook "before_prepare".
Checking config.xml and package.json for saved platforms that haven't been added to the project
Config.xml and package.json platforms are the same. No pkg.json modification.
Package.json and config.xml platforms are different. Updating config.xml with most current list of platforms.
PlatformApi successfully found for platform ios
Checking config.xml for saved plugins that haven't been added to the project
Checking for any plugins added to the project that have not been installed in ios platform
No differences found between plugins added to project and installed in ios platform. Continuing...
Generating platform-specific config.xml from defaults for iOS at /Users/Daniele/Berufliches/JW Projects/OriginJW/originjw/platforms/ios/OriginJW/config.xml
Merging project's config.xml into platform-specific iOS config.xml
Merging and updating files from [www, platforms/ios/platform_www] to platforms/ios/www
  copy  www/assets/fonts/ionicons.eot platforms/ios/www/assets/fonts/ionicons.eot (updated file)
  copy  www/assets/fonts/ionicons.scss platforms/ios/www/assets/fonts/ionicons.scss (updated file)
  copy  www/assets/fonts/ionicons.svg platforms/ios/www/assets/fonts/ionicons.svg (updated file)
  copy  www/assets/fonts/ionicons.ttf platforms/ios/www/assets/fonts/ionicons.ttf (updated file)
  copy  www/assets/fonts/ionicons.woff platforms/ios/www/assets/fonts/ionicons.woff (updated file)
  copy  www/assets/fonts/ionicons.woff2 platforms/ios/www/assets/fonts/ionicons.woff2 (updated file)
  copy  www/assets/fonts/noto-sans-bold.ttf platforms/ios/www/assets/fonts/noto-sans-bold.ttf (updated file)
  copy  www/assets/fonts/noto-sans-bold.woff platforms/ios/www/assets/fonts/noto-sans-bold.woff (updated file)
  copy  www/assets/fonts/noto-sans-regular.ttf platforms/ios/www/assets/fonts/noto-sans-regular.ttf (updated file)
  copy  www/assets/fonts/noto-sans-regular.woff platforms/ios/www/assets/fonts/noto-sans-regular.woff (updated file)
  copy  www/assets/fonts/noto-sans.scss platforms/ios/www/assets/fonts/noto-sans.scss (updated file)
  copy  www/assets/fonts/roboto-bold.ttf platforms/ios/www/assets/fonts/roboto-bold.ttf (updated file)
  copy  www/assets/fonts/roboto-bold.woff platforms/ios/www/assets/fonts/roboto-bold.woff (updated file)
  copy  www/assets/fonts/roboto-bold.woff2 platforms/ios/www/assets/fonts/roboto-bold.woff2 (updated file)
  copy  www/assets/fonts/roboto-light.ttf platforms/ios/www/assets/fonts/roboto-light.ttf (updated file)
  copy  www/assets/fonts/roboto-light.woff platforms/ios/www/assets/fonts/roboto-light.woff (updated file)
  copy  www/assets/fonts/roboto-light.woff2 platforms/ios/www/assets/fonts/roboto-light.woff2 (updated file)
  copy  www/assets/fonts/roboto-medium.ttf platforms/ios/www/assets/fonts/roboto-medium.ttf (updated file)
  copy  www/assets/fonts/roboto-medium.woff platforms/ios/www/assets/fonts/roboto-medium.woff (updated file)
  copy  www/assets/fonts/roboto-medium.woff2 platforms/ios/www/assets/fonts/roboto-medium.woff2 (updated file)
  copy  www/assets/fonts/roboto-regular.ttf platforms/ios/www/assets/fonts/roboto-regular.ttf (updated file)
  copy  www/assets/fonts/roboto-regular.woff platforms/ios/www/assets/fonts/roboto-regular.woff (updated file)
  copy  www/assets/fonts/roboto-regular.woff2 platforms/ios/www/assets/fonts/roboto-regular.woff2 (updated file)
  copy  www/assets/fonts/roboto.scss platforms/ios/www/assets/fonts/roboto.scss (updated file)
  copy  www/assets/i18n/de.json platforms/ios/www/assets/i18n/de.json (updated file)
  copy  www/assets/i18n/en.json platforms/ios/www/assets/i18n/en.json (updated file)
  copy  www/assets/i18n/it.json platforms/ios/www/assets/i18n/it.json (updated file)
  copy  www/assets/icon/favicon.ico platforms/ios/www/assets/icon/favicon.ico (updated file)
  copy  www/assets/imgs/JW-Round.png platforms/ios/www/assets/imgs/JW-Round.png (updated file)
  copy  www/assets/imgs/logo.png platforms/ios/www/assets/imgs/logo.png (updated file)
  copy  www/assets/imgs/ministryjwlogo.png platforms/ios/www/assets/imgs/ministryjwlogo.png (updated file)
  copy  www/assets/imgs/tracts/bible.jpg platforms/ios/www/assets/imgs/tracts/bible.jpg (updated file)
  copy  www/assets/imgs/tracts/dead.jpg platforms/ios/www/assets/imgs/tracts/dead.jpg (updated file)
  copy  www/assets/imgs/tracts/family.jpg platforms/ios/www/assets/imgs/tracts/family.jpg (updated file)
  copy  www/assets/imgs/tracts/future.jpg platforms/ios/www/assets/imgs/tracts/future.jpg (updated file)
  copy  www/assets/imgs/tracts/kingdom.jpg platforms/ios/www/assets/imgs/tracts/kingdom.jpg (updated file)
  copy  www/assets/imgs/tracts/suffering.jpg platforms/ios/www/assets/imgs/tracts/suffering.jpg (updated file)
  copy  www/assets/imgs/tracts/website.jpg platforms/ios/www/assets/imgs/tracts/website.jpg (updated file)
  copy  www/assets/imgs/tracts/world.jpg platforms/ios/www/assets/imgs/tracts/world.jpg (updated file)
  copy  www/build/main.css platforms/ios/www/build/main.css (updated file)
  copy  www/build/main.css.map platforms/ios/www/build/main.css.map (updated file)
  copy  www/build/main.js platforms/ios/www/build/main.js (updated file)
  copy  www/build/main.js.map platforms/ios/www/build/main.js.map (updated file)
  copy  www/build/polyfills.js platforms/ios/www/build/polyfills.js (updated file)
  copy  www/build/sw-toolbox.js platforms/ios/www/build/sw-toolbox.js (updated file)
  copy  www/build/vendor.js platforms/ios/www/build/vendor.js (updated file)
  copy  www/build/vendor.js.map platforms/ios/www/build/vendor.js.map (updated file)
  copy  www/index.html platforms/ios/www/index.html (updated file)
  copy  www/manifest.json platforms/ios/www/manifest.json (updated file)
  copy  www/service-worker.js platforms/ios/www/service-worker.js (updated file)
Current launch storyboard CDVLaunchScreen
Not changing launch storyboard setting in info plist.
Wrote out iOS Bundle Identifier "com.ministryjw.originjw" and iOS Bundle Version "1.1.2" to /Users/Daniele/Berufliches/JW Projects/OriginJW/originjw/platforms/ios/OriginJW/OriginJW-Info.plist
No need to update build settings for launch storyboard support.
iOS Product Name has not changed (still "OriginJW")
Updating icons at platforms/ios/OriginJW/Images.xcassets/AppIcon.appiconset/
Updating splash screens at platforms/ios/OriginJW/Images.xcassets/LaunchImage.launchimage/
Updating launch storyboard images at platforms/ios/OriginJW/Images.xcassets/LaunchStoryboard.imageset/
Updating Storyboard image set contents.json
This app does not have additional resource files defined
Prepared iOS project successfully
Executing script found in plugin cordova-plugin-ios-localized-strings for hook "after_prepare": plugins/cordova-plugin-ios-localized-strings/scripts/add_supported_languages.js
Resolving module name for cordova-common => cordova-common
[iOS] Setting main language to: English
[iOS] Setting also additional languagees to: it,de,en
No scripts found for hook "before_compile".
Error: Cannot read property 'toLowerCase' of undefined
[ERROR] An error occurred while running subprocess cordova.

        cordova build ios --verbose exited with exit code 1.

        Re-running this command with the --verbose flag may provide more information.
  ionic:cli-framework:utils:process onBeforeExit handler: process.exit received +0ms
  ionic:cli-framework:utils:process onBeforeExit handler: running 2 queued functions +0ms
  ionic:cli-framework:utils:process onBeforeExit handler: exiting (exit code 1) +68ms

在我的代码中一切都很好 - 我可以使用ionicserve很好地启动应用程序。您知道问题出在哪里吗？

Answer 1

尝试以下步骤:

1. ionic cordova 平台 rm ios
2. ionic cordova 平台添加 ios@latest
3. ionic cordova 构建 ios

效果很好。希望这也适合你。 :)