yarnpkg/yarn

expose installation context into process

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#2.472 geöffnet am 16. Jan. 2017

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Beschreibung

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

Contributor Guide

Tech Stack
javascriptnodejs
Domain
toolingdeveloper experience
Issue Type
feature
SchwierigkeitGeschätzte Implementierungsschwierigkeit für neue Contributors, von 1 für sehr kleine Änderungen bis 5 für Expertenarbeit.
3
Geschätzte ZeitEin grober Zeitrahmen, um zu recherchieren, zu implementieren, zu testen und einen Pull Request vorzubereiten.
half day
AktivitätsstatusWie verfügbar das Issue gerade wirkt: frisch, aktiv, stale, blockiert oder wartet auf Maintainer-Input.
stale
KlarheitWie klar das Issue die erwartete Änderung, Akzeptanzkriterien und den nächsten Schritt erklärt.
clear
Voraussetzungen
Basic knowledge of Node.jsFamiliarity with yarn's architecture
EinsteigerfreundlichkeitEin Score von 1 bis 100, der schätzt, wie zugänglich dieses Issue für First-Time Contributors ist.
30
Research-Richtung
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.