Typescript 编译器突然开始产生错误答案

【问题标题】：Typescript compiler suddenly started to generate errorsTypescript 编译器突然开始产生错误
【发布时间】：2017-02-15 02:17:12
【问题描述】：

我正在处理一个 Angular 2 项目，突然间，当我尝试运行 typescript 编译器时，我开始遇到很多错误。有人可以建议从哪里开始搜索吗？我没有故意改变任何基本的东西，即使我从存储库克隆了一个新副本，错误仍然存在。错误如下：

node_modules/@types/node/index.d.ts(102,6): error TS2300: Duplicate identifier 'BufferEncoding'.
node_modules/@types/node/index.d.ts(256,9): error TS2403: Subsequent variable declarations must have the same type.  Variable 'errno' must be of type 'number', but here has type 'string'.
node_modules/@types/node/index.d.ts(263,18): error TS2300: Duplicate identifier 'EventEmitter'.
node_modules/@types/node/index.d.ts(549,26): error TS2300: Duplicate identifier 'Buffer'.
node_modules/@types/node/index.d.ts(549,50): error TS2300: Duplicate identifier 'SlowBuffer'.
node_modules/@types/node/index.d.ts(570,18): error TS2300: Duplicate identifier 'EventEmitter'.
node_modules/@types/node/index.d.ts(570,18): error TS2415: Class 'EventEmitter' incorrectly extends base class 'NodeJS.EventEmitter'.
  Types of property 'eventNames' are incompatible.
    Type '() => (string | symbol)[]' is not assignable to type '() => string[]'.
      Type '(string | symbol)[]' is not assignable to type 'string[]'.
        Type 'string | symbol' is not assignable to type 'string'.
          Type 'symbol' is not assignable to type 'string'.
node_modules/@types/node/index.d.ts(733,18): error TS2300: Duplicate identifier 'Agent'.
node_modules/@types/node/index.d.ts(788,9): error TS2403: Subsequent variable declarations must have the same type.  Variable 'addressType' must be of type 'string', but here has type 'number | "udp4" | "udp6"'.
node_modules/@types/node/index.d.ts(791,18): error TS2300: Duplicate identifier 'Worker'.
node_modules/@types/node/index.d.ts(1377,17): error TS2300: Duplicate identifier 'CompleterResult'.
node_modules/@types/node/index.d.ts(1414,18): error TS2300: Duplicate identifier 'Script'.
node_modules/@types/node/index.d.ts(2550,18): error TS2300: Duplicate identifier 'TLSSocket'.
node_modules/@types/node/index.d.ts(2684,9): error TS2403: Subsequent variable declarations must have the same type.  Variable 'pfx' must be of type 'any', but here has type 'string | Buffer[]'.
node_modules/@types/node/index.d.ts(2685,9): error TS2403: Subsequent variable declarations must have the same type.  Variable 'key' must be of type 'any', but here has type 'string | any[] | string[] | Buffer'.
node_modules/@types/node/index.d.ts(2687,9): error TS2403: Subsequent variable declarations must have the same type.  Variable 'cert' must be of type 'any', but here has type 'string | string[] | Buffer | Buffer[]'.
node_modules/@types/node/index.d.ts(2688,9): error TS2403: Subsequent variable declarations must have the same type.  Variable 'ca' must be of type 'any', but here has type 'string | string[] | Buffer | Buffer[]'.
node_modules/@types/node/index.d.ts(2689,9): error TS2403: Subsequent variable declarations must have the same type.  Variable 'crl' must be of type 'any', but here has type 'string | string[]'.
node_modules/@types/node/index.d.ts(2691,9): error TS2403: Subsequent variable declarations must have the same type.  Variable 'honorCipherOrder' must be of type 'any', but here has type 'boolean'.
node_modules/@types/node/index.d.ts(2694,9): error TS2403: Subsequent variable declarations must have the same type.  Variable 'NPNProtocols' must be of type 'any', but here has type 'string[] | Buffer'.
node_modules/@types/node/index.d.ts(2711,9): error TS2403: Subsequent variable declarations must have the same type.  Variable 'key' must be of type 'string | Buffer', but here has type 'string | string[] | Buffer | Buffer[]'.
node_modules/@types/node/index.d.ts(2713,9): error TS2403: Subsequent variable declarations must have the same type.  Variable 'cert' must be of type 'string | Buffer', but here has type 'string | string[] | Buffer | Buffer[]'.
node_modules/@types/node/index.d.ts(2714,9): error TS2403: Subsequent variable declarations must have the same type.  Variable 'ca' must be of type '(string | Buffer)[]', but here has type 'string | Buffer | (string | Buffer)[]'.
node_modules/@types/node/index.d.ts(2953,9): error TS2403: Subsequent variable declarations must have the same type.  Variable 'padding' must be of type 'any', but here has type 'number'.
node_modules/@types/node/index.d.ts(2958,9): error TS2403: Subsequent variable declarations must have the same type.  Variable 'padding' must be of type 'any', but here has type 'number'.
node_modules/@types/node/index.d.ts(3216,5): error TS2309: An export assignment cannot be used in a module with other exported elements.
node_modules/@types/node/index.d.ts(3299,5): error TS2300: Duplicate identifier 'export='.
node_modules/@types/node/index.d.ts(3321,18): error TS2300: Duplicate identifier 'Domain'.
node_modules/@types/node/index.d.ts(3613,5): error TS2300: Duplicate identifier 'export='.
typings/globals/node/index.d.ts(78,6): error TS2300: Duplicate identifier 'BufferEncoding'.
typings/globals/node/index.d.ts(234,18): error TS2300: Duplicate identifier 'EventEmitter'.
typings/globals/node/index.d.ts(516,9): error TS2502: 'BuffType' is referenced directly or indirectly in its own type annotation.
typings/globals/node/index.d.ts(517,9): error TS2502: 'SlowBuffType' is referenced directly or indirectly in its own type annotation.
typings/globals/node/index.d.ts(518,26): error TS2300: Duplicate identifier 'Buffer'.
typings/globals/node/index.d.ts(518,50): error TS2300: Duplicate identifier 'SlowBuffer'.
typings/globals/node/index.d.ts(539,18): error TS2300: Duplicate identifier 'EventEmitter'.
typings/globals/node/index.d.ts(580,22): error TS2320: Interface 'Server' cannot simultaneously extend types 'EventEmitter' and 'Server'.
  Named property 'addListener' of types 'EventEmitter' and 'Server' are not identical.
typings/globals/node/index.d.ts(580,22): error TS2320: Interface 'Server' cannot simultaneously extend types 'EventEmitter' and 'Server'.
  Named property 'emit' of types 'EventEmitter' and 'Server' are not identical.
typings/globals/node/index.d.ts(580,22): error TS2320: Interface 'Server' cannot simultaneously extend types 'EventEmitter' and 'Server'.
  Named property 'on' of types 'EventEmitter' and 'Server' are not identical.
typings/globals/node/index.d.ts(580,22): error TS2320: Interface 'Server' cannot simultaneously extend types 'EventEmitter' and 'Server'.
  Named property 'once' of types 'EventEmitter' and 'Server' are not identical.
typings/globals/node/index.d.ts(580,22): error TS2320: Interface 'Server' cannot simultaneously extend types 'EventEmitter' and 'Server'.
  Named property 'prependListener' of types 'EventEmitter' and 'Server' are not identical.
typings/globals/node/index.d.ts(580,22): error TS2320: Interface 'Server' cannot simultaneously extend types 'EventEmitter' and 'Server'.
  Named property 'prependOnceListener' of types 'EventEmitter' and 'Server' are not identical.
typings/globals/node/index.d.ts(580,22): error TS2320: Interface 'Server' cannot simultaneously extend types 'EventEmitter' and 'Server'.
  Named property 'removeListener' of types 'EventEmitter' and 'Server' are not identical.
typings/globals/node/index.d.ts(591,22): error TS2320: Interface 'ServerResponse' cannot simultaneously extend types 'EventEmitter' and 'Writable'.
  Named property 'addListener' of types 'EventEmitter' and 'Writable' are not identical.
typings/globals/node/index.d.ts(591,22): error TS2320: Interface 'ServerResponse' cannot simultaneously extend types 'EventEmitter' and 'Writable'.
  Named property 'emit' of types 'EventEmitter' and 'Writable' are not identical.
typings/globals/node/index.d.ts(591,22): error TS2320: Interface 'ServerResponse' cannot simultaneously extend types 'EventEmitter' and 'Writable'.
  Named property 'on' of types 'EventEmitter' and 'Writable' are not identical.
typings/globals/node/index.d.ts(591,22): error TS2320: Interface 'ServerResponse' cannot simultaneously extend types 'EventEmitter' and 'Writable'.
  Named property 'once' of types 'EventEmitter' and 'Writable' are not identical.
typings/globals/node/index.d.ts(591,22): error TS2320: Interface 'ServerResponse' cannot simultaneously extend types 'EventEmitter' and 'Writable'.
  Named property 'prependListener' of types 'EventEmitter' and 'Writable' are not identical.
typings/globals/node/index.d.ts(591,22): error TS2320: Interface 'ServerResponse' cannot simultaneously extend types 'EventEmitter' and 'Writable'.
  Named property 'prependOnceListener' of types 'EventEmitter' and 'Writable' are not identical.
typings/globals/node/index.d.ts(591,22): error TS2320: Interface 'ServerResponse' cannot simultaneously extend types 'EventEmitter' and 'Writable'.
  Named property 'removeListener' of types 'EventEmitter' and 'Writable' are not identical.
typings/globals/node/index.d.ts(621,22): error TS2320: Interface 'ClientRequest' cannot simultaneously extend types 'EventEmitter' and 'Writable'.
  Named property 'addListener' of types 'EventEmitter' and 'Writable' are not identical.
typings/globals/node/index.d.ts(621,22): error TS2320: Interface 'ClientRequest' cannot simultaneously extend types 'EventEmitter' and 'Writable'.
  Named property 'emit' of types 'EventEmitter' and 'Writable' are not identical.
typings/globals/node/index.d.ts(621,22): error TS2320: Interface 'ClientRequest' cannot simultaneously extend types 'EventEmitter' and 'Writable'.
  Named property 'on' of types 'EventEmitter' and 'Writable' are not identical.
typings/globals/node/index.d.ts(621,22): error TS2320: Interface 'ClientRequest' cannot simultaneously extend types 'EventEmitter' and 'Writable'.
  Named property 'once' of types 'EventEmitter' and 'Writable' are not identical.
typings/globals/node/index.d.ts(621,22): error TS2320: Interface 'ClientRequest' cannot simultaneously extend types 'EventEmitter' and 'Writable'.
  Named property 'prependListener' of types 'EventEmitter' and 'Writable' are not identical.
typings/globals/node/index.d.ts(621,22): error TS2320: Interface 'ClientRequest' cannot simultaneously extend types 'EventEmitter' and 'Writable'.
  Named property 'prependOnceListener' of types 'EventEmitter' and 'Writable' are not identical.
typings/globals/node/index.d.ts(621,22): error TS2320: Interface 'ClientRequest' cannot simultaneously extend types 'EventEmitter' and 'Writable'.
  Named property 'removeListener' of types 'EventEmitter' and 'Writable' are not identical.
typings/globals/node/index.d.ts(647,22): error TS2320: Interface 'IncomingMessage' cannot simultaneously extend types 'EventEmitter' and 'Readable'.
  Named property 'addListener' of types 'EventEmitter' and 'Readable' are not identical.
typings/globals/node/index.d.ts(647,22): error TS2320: Interface 'IncomingMessage' cannot simultaneously extend types 'EventEmitter' and 'Readable'.
  Named property 'emit' of types 'EventEmitter' and 'Readable' are not identical.
typings/globals/node/index.d.ts(647,22): error TS2320: Interface 'IncomingMessage' cannot simultaneously extend types 'EventEmitter' and 'Readable'.
  Named property 'on' of types 'EventEmitter' and 'Readable' are not identical.
typings/globals/node/index.d.ts(647,22): error TS2320: Interface 'IncomingMessage' cannot simultaneously extend types 'EventEmitter' and 'Readable'.
  Named property 'once' of types 'EventEmitter' and 'Readable' are not identical.
typings/globals/node/index.d.ts(647,22): error TS2320: Interface 'IncomingMessage' cannot simultaneously extend types 'EventEmitter' and 'Readable'.
  Named property 'prependListener' of types 'EventEmitter' and 'Readable' are not identical.
typings/globals/node/index.d.ts(647,22): error TS2320: Interface 'IncomingMessage' cannot simultaneously extend types 'EventEmitter' and 'Readable'.
  Named property 'prependOnceListener' of types 'EventEmitter' and 'Readable' are not identical.
typings/globals/node/index.d.ts(647,22): error TS2320: Interface 'IncomingMessage' cannot simultaneously extend types 'EventEmitter' and 'Readable'.
  Named property 'removeListener' of types 'EventEmitter' and 'Readable' are not identical.
typings/globals/node/index.d.ts(698,18): error TS2300: Duplicate identifier 'Agent'.
typings/globals/node/index.d.ts(743,18): error TS2300: Duplicate identifier 'Worker'.
typings/globals/node/index.d.ts(1004,22): error TS2300: Duplicate identifier 'CompleterResult'.
typings/globals/node/index.d.ts(1044,18): error TS2300: Duplicate identifier 'Script'.
typings/globals/node/index.d.ts(1886,18): error TS2300: Duplicate identifier 'TLSSocket'.
typings/globals/node/index.d.ts(2343,5): error TS2300: Duplicate identifier 'export='.
typings/globals/node/index.d.ts(2365,18): error TS2300: Duplicate identifier 'Domain'.
typings/globals/node/index.d.ts(2625,5): error TS2300: Duplicate identifier 'export='.

【问题讨论】：

标签： node.js angular

【解决方案1】：

看起来您在两个地方都有节点类型。

node_modules/@types/node/index.d.ts

typings/globals/node/index.d.ts

【讨论】：

谢谢，准时。删除 @types 文件夹更正了该问题。虽然不知道为什么我会重复。
可能是 @types 文件夹中其他包的依赖项
是的，再次正确。知道如何防止冲突吗？看起来@types 是一种常见的依赖关系。
@types 是为打字稿加载类型的新推荐方法。您可以从类型文件夹中删除节点并使用@types 中的版本吗？ blogs.msdn.microsoft.com/typescript/2016/06/15/…
Typescript 2.x 似乎有 d.ts 用于节点和它以前没有的其他软件。删除 @type 文件夹有效。更多信息在blog.mgechev.com/2016/03/28/…

【解决方案2】：

如前所述，您似乎将@types（通过使用typescript2）与打字混合。就像我升级到 typescript 2.x 时一样。我得到了完全相同的错误。我通过在 tsconfig 的 compilerOptions 中简单地添加类型声明“types": []”来解决。我在这里更详细地描述了这一点： https://stackoverflow.com/a/40627265/333150

这将基本上不包括来自@types 位置的任何类型，并且只使用您的类型声明。

【讨论】：

【解决方案3】：

删除 typings.json 文件将解决此问题。

Angular 快速入门项目的早期版本包含此文件。但是，当尝试升级到最新版本的 Angular 时，我发现该文件不再是 Quickstart 的一部分。它已在 this commit 中删除。如果您的项目最初基于该代码，那么查看 Quickstart 的更新会很有帮助。

【讨论】：