javascript - Angular 构建调试失败(在 typeToString 处)

Question

运行 ionic cordova run ios --prod 命令后出现以下错误。我正在使用 ionic 3 并想在 ios 模拟器上运行。

Error: Debug Failure.
    at typeToString (/Users/xafar/Documents/Projects/SeekThisPlace/mobile/node_modules/typescript/lib/typescript.js:28777:22)
    at checkVariableLikeDeclaration (/Users/xafar/Documents/Projects/SeekThisPlace/mobile/node_modules/typescript/lib/typescript.js:44893:199)
    at checkParameter (/Users/xafar/Documents/Projects/SeekThisPlace/mobile/node_modules/typescript/lib/typescript.js:43030:13)
    at Object.forEach (/Users/xafar/Documents/Projects/SeekThisPlace/mobile/node_modules/typescript/lib/typescript.js:1506:30)
    at checkSignatureDeclaration (/Users/xafar/Documents/Projects/SeekThisPlace/mobile/node_modules/typescript/lib/typescript.js:43171:16)
    at checkConstructorDeclaration (/Users/xafar/Documents/Projects/SeekThisPlace/mobile/node_modules/typescript/lib/typescript.js:43398:13)
    at checkSourceElement (/Users/xafar/Documents/Projects/SeekThisPlace/mobile/node_modules/typescript/lib/typescript.js:46712:28)
    at Object.forEach (/Users/xafar/Documents/Projects/SeekThisPlace/mobile/node_modules/typescript/lib/typescript.js:1506:30)
    at checkClassDeclaration (/Users/xafar/Documents/Projects/SeekThisPlace/mobile/node_modules/typescript/lib/typescript.js:45765:16)
    at checkSourceElement (/Users/xafar/Documents/Projects/SeekThisPlace/mobile/node_modules/typescript/lib/typescript.js:46779:28)

Answer 1

Latish answer，但这可能是由于双重声明相同变量和在组件中声明不当造成的，例如:

export class MyComponent implements OnInit {

  centres : Array<any> = [];
  groups: Array<any> = [];
  headerList = [];
  actions= [];
  headerList :  [];  // <-- This is the culprit
}

请注意第二个 headerList 声明带有冒号而不是等号。我看到即使是相当现代的 IDE 也不会报告这个问题。删除第二个声明会消除错误。

另请注意，一旦出现第一个错误，编译器将无法在监视模式下正确重启。你应该 CTRL-C 它然后重新启动它。

我在 2.4.2 中遇到了这个问题。