yarnpkg/yarn

expose installation context into process

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#2,472 opened on 2017年1月16日

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cat-compatibilitygood first issuetriaged

説明

What is the current behavior?

Greetings!

npm exposes the following process.env.npm_config_global. this enables me to determine what context i am operating in during installation. i do not see such a thing present for yarn.

i understand that this could invoke some fear or questioning.

"why would you ever want or need that? you're probably doing something wrong!" --say concerned citizens

there's actually a plenty valid use case. my use case is that I have a package who's objective is to modify the consumer's package oninstall. because this pkg ships as a dep in other packages, some of which get installed globally, i care to detect this condition and respond accordingly.

Please mention your node.js, yarn and operating system version.

  • node 7.4.0
  • yarn 0.18.1

コントリビューターガイド

技術スタック
javascriptnodejs
領域
toolingdeveloper experience
Issue 種別
feature
難度新しい貢献者にとっての実装難度です。1 は非常に小さな変更、5 は専門的な作業です。
3
推定時間経験ある貢献者が調査、実装、テスト、pull request 準備にかけるおおよその時間範囲です。
half day
活動状況Issue が今どれだけ取り組みやすいかを示します。新しい、活発、古い、ブロック中、またはメンテナー入力待ちなどです。
stale
明確さ期待される変更、受け入れ条件、次の手順がどれだけ明確かを示します。
clear
前提条件
Basic knowledge of Node.jsFamiliarity with yarn's architecture
初心者向け度初回貢献者にどれだけ取り組みやすいかを 1-100 で推定したスコアです。
30
調査方針
The issue requests exposing the global installation context (similar to npm's process.env.npm config global) during package installation. The 1.x line is frozen, but if implementing, one would need to modify yarn's lifecycle scripts to set an environment variable like process.env.yarn global when installing globally. Relevant files likely include the installer or script runner modules in the yarn source code.