如何引用计算机上全局安装的依赖项？

Question

我正在构建一个包（让我们称之为项目a），我正试图包含在另一个项目中（项目b）。

在项目b中，我在package.json

中有这个

...
"dependencies": {
    "a": "C:\\Users\\myuser\\AppData\\Roaming\\npm\\node_modules\\a"
  },
...

但是当我在项目b中运行npm install时，我收到错误：

npm ERR! notarget No compatible version found: 1@'C:\Users\myuser\AppData\Roaming\npm\node_modules\a'
npm ERR! notarget Valid install targets:
npm ERR! notarget ["1.0.0","1.0.1","1.0.2","1.0.3","1.0.4","1.0.5","1.0.6"]

发布版本1.0.0 - 1.0.6（虽然不起作用）。

为什么npm install不查看我指定的路径而不是查看NPM公共回购？

Answer 1

因为这不是npm识别的一种来源。见package.json（5）：

dependencies
       Dependencies are specified with a simple hash of package name  to  ver‐
       sion  range.  The  version  range  is  a  string  which has one or more
       space-separated descriptors.  Dependencies can also be identified  with
       a tarball or git URL.

       Please  do  not  put test harnesses or transpilers in your dependencies
       hash.  See devDependencies, below.

       npm help  See semver for more details about specifying version ranges.

       ·   version Must match version exactly

       ·   >version Must be greater than version

       ·   >=version etc

       ·   <version

       ·   <=version

       ·   npm help   ~version  "Approximately  equivalent  to  version"   See
           semver

       ·   npm help  ^version "Compatible with version"  See semver

       ·   1.2.x 1.2.0, 1.2.1, etc., but not 1.3.0

       ·   http://... See 'URLs as Dependencies' below

       ·   * Matches any version

       ·   "" (just an empty string) Same as *

       ·   version1 - version2 Same as >=version1 <=version2.

       ·   range1 || range2 Passes if either range1 or range2 are satisfied.

       ·   git... See 'Git URLs as Dependencies' below

       ·   user/repo See 'GitHub URLs' below

在npm link内运行C:\Users\myuser\AppData\Roaming\npm\node_modules\a，并在package.json中设置常规依赖关系。

Answer 2

我能够通过在我想要使用依赖项的项目中运行npm install C:\Users\myuser\AppData\Roaming\npm\node_modules\a来安装本地构建的依赖项。