git hook to run `npm install` after git pull, merge, rebase or checkout if package.json was changed

!Git hooks for NPM projects

# The name for this gist (starts with exclamation mark, because the name of the gist is the name of the first file in ASCIIbetical order)

readme.md

Git hooks for NPM Projects

1. Copy theses files into your hooks folder

$ mkdir hooks && curl -L -o hooks/post-checkout -O https://gist.github.com/taurus227/28960de89e6c43bb3d492125368f1224/raw/post-checkout && curl -L -o hooks/post-merge -O https://gist.github.com/taurus227/28960de89e6c43bb3d492125368f1224/raw/post-merge && curl -L -o hooks/post-rewrite -O https://gist.github.com/taurus227/28960de89e6c43bb3d492125368f1224/raw/post-rewrite

2. Add an installation script into your package.json

...
  "scripts": {                                                       
    "install": "cp ./hooks/* .git/hooks/ && chmod -R a+x .git/hooks/"
  },                                                                 
...

3. Commit and push to remote repository

At this point it will work for the whole team as soon as they all run npm install

Thanks to these guys:

• https://gist.github.com/sindresorhus/7996717
• https://gist.github.com/jakemhiller/d342ad51505addf78ec628a16fd3280f
• https://gist.github.com/betorobson/23e5914b51e844bac5eaa6032d6f3f88

post-checkout

#!/usr/bin/env bash
# from https://gist.github.com/taurus227/28960de89e6c43bb3d492125368f1224

changed_files="$(git diff-tree -r --name-only --no-commit-id $1 $2)"

check_run() {
	echo "$changed_files" | grep --quiet "$1" && echo "$0: Running $2..." && eval "$2"
}

check_run package.json "npm prune && npm install"

post-merge

#!/usr/bin/env bash
# from https://gist.github.com/taurus227/28960de89e6c43bb3d492125368f1224

changed_files="$(git diff-tree -r --name-only --no-commit-id ORIG_HEAD HEAD)"

check_run() {
	echo "$changed_files" | grep --quiet "$1" && echo "$0: Running $2..." && eval "$2"
}

check_run package.json "npm prune && npm install"

post-rewrite

#!/bin/bash
# from https://gist.github.com/taurus227/28960de89e6c43bb3d492125368f1224

if [[ "$1" == "rebase" ]]
then
  $(dirname "$0")/post-merge
fi