A shell script storing the commands to run before a git commit

git-hooks-pre-commit.sh

#!/data/data/com.termux/files/usr/bin/bash

# NOTE: this file script should be placed at .git/hooks/pre-commit
# for linux users, this script should be made executable using the
# command:
# chmod +x .git/hooks/pre-commit

STAGED_FILES="$(git diff --name-only --staged)"
FILES_TO_LINT=""
EXCLUDED_FILES=".gitignore yarn.lock"

# compile the files to be linted
for _file in $STAGED_FILES;
do
  if [[ -f $_file ]];
  then
    FILES_TO_LINT="$FILES_TO_LINT $_file"
  fi
done

# remove excluded files from the list of files to lint
for _file in $EXCLUDED_FILES;
do
  FILES_TO_LINT=$(echo $FILES_TO_LINT | sed --expression "s/${_file}//")
done

# format the files
# NOTE: USE THE OPTION '--write' WITH CAUTION! https://prettier.io/docs/en/cli.html
yarn format --write $FILES_TO_LINT

# lint the files
yarn lint --fix $FILES_TO_LINT

# stage the linted files
echo $FILES_TO_LINT | xargs -l git add