Typescript 无法使用 tsconfig.json

Question

在项目中使用 tsconfig 运行 tsc --watch 时，出现以下错误。 它需要 react 类型和 node.js 中的 redux。

error TS2688: Cannot find type definition file for 'abstract-leveldown'.
  The file is in the program because:
    Entry point for implicit type library 'abstract-leveldown'

error TS2688: Cannot find type definition file for 'bn.js'.
  The file is in the program because:
    Entry point for implicit type library 'bn.js'

error TS2688: Cannot find type definition file for 'body-parser'.
  The file is in the program because:
    Entry point for implicit type library 'body-parser'

error TS2688: Cannot find type definition file for 'connect'.
  The file is in the program because:
    Entry point for implicit type library 'connect'

error TS2688: Cannot find type definition file for 'debug'.
  The file is in the program because:
    Entry point for implicit type library 'debug'

error TS2688: Cannot find type definition file for 'express'.
  The file is in the program because:
    Entry point for implicit type library 'express'

error TS2688: Cannot find type definition file for 'express-jwt'.
  The file is in the program because:
    Entry point for implicit type library 'express-jwt'

error TS2688: Cannot find type definition file for 'express-serve-static-core'.
  The file is in the program because:
    Entry point for implicit type library 'express-serve-static-core'

error TS2688: Cannot find type definition file for 'express-unless'.
  The file is in the program because:
    Entry point for implicit type library 'express-unless'

error TS2688: Cannot find type definition file for 'firebase'.
  The file is in the program because:
    Entry point for implicit type library 'firebase'

error TS2688: Cannot find type definition file for 'graceful-fs'.
  The file is in the program because:
    Entry point for implicit type library 'graceful-fs'

请解释为什么会这样。 我在Github中是否设置了项目。

Answer 1

我卸载了 node.js 和 npm 并重新安装，仍然有同样的问题。 然后我注意到有一个 npm 和 npm-cache 文件夹和 node_modules 文件夹，卸载不会删除。 当我删除它们并重新安装节点时。 我的代码开始工作了。 我敢打赌 node_modules 可能是有罪的。

Answer 2

当我切换分支但忘记重新安装 npm 包时，这发生在我身上。 所以这样做：

npm install在当前分支安装，然后重试。