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Identifies why a package has been installed (by yarn.lock)

JavaScript 100.00%

yarn npm npm-why yarn-why cli

yarn-why's Introduction

yarn-why

Identifies why a package has been installed.

Difference to yarn why

Full requiring path (yarn why only list direct dependents).
Read from yarn.lock locally (no network request), blazing fast.
Simpler output, consistent with npm-why.

Install & Usage

npm install -g yarn-why

Usage

  $ yarn-why <package>

Examples

  $ yarn-why chalk

npm-why - Identifies why a package has been installed (by package-lock.json).
nls - Missing inspector for npm packages.

License

MIT @ Amio

yarn-why's People

Contributors

Stargazers

Watchers

yarn-why's Issues

Maximum call stack size exceeded when running in prettier/prettier repo

~/stuff
❯ yarn-why --version
0.2.0

~/stuff
❯ node --version
v10.9.0

~/stuff
❯ git clone [email protected]:prettier/prettier.git
Cloning into 'prettier'...
remote: Counting objects: 46962, done.
remote: Compressing objects: 100% (12/12), done.
remote: Total 46962 (delta 3), reused 1 (delta 0), pack-reused 46950
Receiving objects: 100% (46962/46962), 23.83 MiB | 13.71 MiB/s, done.
Resolving deltas: 100% (21977/21977), done.

~/stuff
❯ cd prettier/

~/stuff/prettier master
❯ yarn-why chalk
/home/lydell/stuff/prettier/node_modules/yarn-why/index.js:39
      return x.join('@') === target
               ^

RangeError: Maximum call stack size exceeded
    at Array.join (native)
    at meta.dependencies.Object.entries.find.x (/home/lydell/stuff/prettier/node_modules/yarn-why/index.js:39:16)
    at Array.find (<anonymous>)
    at Object.entries.filter (/home/lydell/stuff/prettier/node_modules/yarn-why/index.js:38:67)
    at Array.filter (<anonymous>)
    at lookupDependents (/home/lydell/stuff/prettier/node_modules/yarn-why/index.js:37:43)
    at dependents.forEach.dept (/home/lydell/stuff/prettier/node_modules/yarn-why/index.js:44:32)
    at Array.forEach (<anonymous>)
    at lookupDependents (/home/lydell/stuff/prettier/node_modules/yarn-why/index.js:44:16)
    at dependents.forEach.dept (/home/lydell/stuff/prettier/node_modules/yarn-why/index.js:44:32)

~/stuff/prettier 1m 28s master
❯ yarn why chalk

yarn why v1.9.4

[1/4] Why do we have the module "chalk"...?
[2/4] Initialising dependency graph...
warning Resolution field "@babel/[email protected]" is incompatible with requested version "@babel/[email protected]"
warning Resolution field "@babel/[email protected]" is incompatible with requested version "@babel/[email protected]"
warning Resolution field "@babel/[email protected]" is incompatible with requested version "@babel/[email protected]"
[3/4] Finding dependency...
[4/4] Calculating file sizes...
=> Found "[email protected]"
info Has been hoisted to "chalk"
info This module exists because it's specified in "dependencies".
=> Found "eslint-friendly-formatter#[email protected]"
info This module exists because "eslint-friendly-formatter" depends on it.
=> Found "jest-snapshot#[email protected]"
info This module exists because "jest-snapshot" depends on it.
=> Found "jest-message-util#[email protected]"
info This module exists because "jest-message-util" depends on it.
=> Found "jest-resolve#[email protected]"
info This module exists because "jest-resolve" depends on it.
=> Found "jest-validate#[email protected]"
info This module exists because "jest-validate" depends on it.
=> Found "eslint#[email protected]"
info This module exists because "eslint" depends on it.
=> Found "jest-watch-typeahead#[email protected]"
info This module exists because "jest-watch-typeahead" depends on it.
=> Found "inquirer#[email protected]"
info This module exists because "eslint#inquirer" depends on it.
=> Found "babel-code-frame#[email protected]"
info This module exists because "eslint#babel-code-frame" depends on it.
=> Found "postcss#[email protected]"
info This module exists because "postcss-less#postcss" depends on it.
=> Found "@babel/highlight#[email protected]"
info This module exists because "@babel#code-frame#@babel#highlight" depends on it.
=> Found "jest-matcher-utils#[email protected]"
info This module exists because "jest-snapshot#jest-matcher-utils" depends on it.
=> Found "jest-diff#[email protected]"
info This module exists because "snapshot-diff#jest-diff" depends on it.
=> Found "jest-junit#[email protected]"
info Reasons this module exists
   - "jest-junit#jest-validate" depends on it
   - Hoisted from "jest-junit#jest-validate#chalk"
=> Found "snapshot-diff#[email protected]"
info Reasons this module exists
   - "snapshot-diff#jest-snapshot" depends on it
   - Hoisted from "snapshot-diff#jest-snapshot#chalk"
   - Hoisted from "snapshot-diff#jest-snapshot#jest-message-util#chalk"
   - Hoisted from "snapshot-diff#jest-snapshot#jest-resolve#chalk"
=> Found "jest-cli#[email protected]"
info This module exists because "jest#jest-cli" depends on it.
=> Found "eslint-formatter-pretty#[email protected]"
info This module exists because "prettylint#eslint-formatter-pretty" depends on it.
=> Found "table#[email protected]"
info This module exists because "eslint#table" depends on it.
=> Found "postcss-scss#[email protected]"
info Reasons this module exists
   - "postcss-scss#postcss" depends on it
   - Hoisted from "postcss-scss#postcss#chalk"
=> Found "har-validator#[email protected]"
info This module exists because "codecov#request#har-validator" depends on it.
=> Found "log-symbols#[email protected]"
info This module exists because "prettylint#eslint-formatter-pretty#log-symbols" depends on it.
=> Found "jest-watcher#[email protected]"
info This module exists because "jest#jest-cli#jest-watcher" depends on it.
=> Found "jest-runtime#[email protected]"
info This module exists because "jest#jest-cli#jest-runtime" depends on it.
=> Found "jest-config#[email protected]"
info This module exists because "jest#jest-cli#jest-config" depends on it.
=> Found "jest-util#[email protected]"
info This module exists because "jest#jest-cli#jest-util" depends on it.
=> Found "jest-jasmine2#[email protected]"
info This module exists because "jest#jest-cli#jest-config#jest-jasmine2" depends on it.
=> Found "jest-each#[email protected]"
info This module exists because "jest#jest-cli#jest-config#jest-jasmine2#jest-each" depends on it.
Done in 2.68s.

Support Yarn 2 PnP

Starting from Yarn 2, packages are stored in a PnP environment (see https://yarnpkg.com/features/pnp). At the moment, yarn-why can't see them, but only packages in the node_modules folder. Even adding the nodeLinker property into the yarnrc file to store packages in node_modules folder doesn't work (I think yarn.lock has changed its format)

Production dependencies only flag?

This could be a very useful flag if you add it.

npx yarn-why --production

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