別名（Aliases）

別名讓您可以使用自定義名稱安裝軟件包。

Let's assume you use lodash all over your project. There is a bug in lodash that breaks your project. You have a fix but lodash won't merge it. Normally you would either install lodash from your fork directly (as a git-hosted dependency) or publish it with a different name. If you use the second solution you have to replace all the requires in your project with the new dependency name (require('lodash') => require('awesome-lodash')). 透過別名，您將有第三種選擇方式。

Publish a new package called awesome-lodash and install it using lodash as its alias:

pnpm add lodash@npm:awesome-lodash

不需要更改程式碼。 All the requires of lodash will now resolve to awesome-lodash.

有時候您會想要在專案中使用兩個不同版本的套件。這很簡單：

pnpm add lodash1@npm:lodash@1
pnpm add lodash2@npm:lodash@2

Now you can require the first version of lodash via require('lodash1') and the second via require('lodash2').

This gets even more useful when combined with hooks. Maybe you want to replace lodash with awesome-lodash in all the packages in node_modules. You can easily achieve that with the following .pnpmfile.mjs:

function readPackage(pkg) {
  if (pkg.dependencies && pkg.dependencies.lodash) {
    pkg.dependencies.lodash = 'npm:awesome-lodash@^1.0.0'
  }
  return pkg
}

export const hooks = {
  readPackage
}