npm 无法安装本地包：EISDIR: 对目录的非法操作，请阅读

Question

当尝试通过 npm 将我编译的 TypeScript 输出安装为本地包时，我收到以下错误消息：

$ npm install --save ../app/out

npm ERR! eisdir EISDIR: illegal operation on a directory, read
npm ERR! eisdir This is most likely not a problem with npm itself
npm ERR! eisdir and is related to npm not being able to find a package.json in
npm ERR! eisdir a package you are trying to install.

Answer 1

我在尝试 npm install 我从 TypeScript 编译的本地包时遇到了这个问题。我的目录结构是这样的：

app/
  package.json
  lib/
    some_code.ts
  out/
    lib/
      some_code.d.ts
      some_code.js
tests/
  package.json // npm install ../app/out

npm 抱怨是因为../app/out/ 是一个目录，而不是一个包。我通过将app/package.json 复制到app/out/package.json 来解决此问题。