Better Husky Pre-Commit

husky.ignore.sh

#!/usr/bin/env sh

#
# This script lints files for a Husky pre-commit hook
#
# run with `git commit -m "foo" 2>&1 | tee husky-errors.ignore.txt`
# to save the errors to a file.
#
# {
#  "hooks": {
#    "pre-commit": "bash ./husky.ignore.sh"
#  }
# }
#
#

STAGED=$(git diff --staged --name-only --relative --diff-filter=ACM | grep "\.[t|j]sx\?$")
NPM_BIN=$(npm bin)

T_START=$(date +%s)
T_ESLINT="0"
T_PRETTIER="0"
T_STYLELINT="0"

echo
echo "🪵  staged files:"
echo "${STAGED}"
echo


if test -z "${STAGED}"
then
  echo "nothing to lint 🙀"
  echo 
  echo
  exit 0
else
  S_TIME=$(date +%s)
  echo "running eslint 🐌:"
  ESLINT_OUT=$(${NPM_BIN}/eslint --fix ${STAGED} 2>&1)
  git add ${STAGED} # add any changes from --fix
  E_TIME=$(date +%s)
  T_ESLINT=$((E_TIME-S_TIME))

  S_TIME=$(date +%s)
  echo "running prettier 🏎:"
  PRETTIER_OUT=$(${NPM_BIN}/prettier --list-different --write ${STAGED} 2>&1)
  git add ${STAGED} # add any changes from --write
  E_TIME=$(date +%s)
  T_PRETTIER=$((E_TIME-S_TIME))

  S_TIME=$(date +%s)
  echo "running stylelint 🐎:"
  STYLELINT_OUT=$(${NPM_BIN}/stylelint --fix ${STAGED} 2>&1)
  git add ${STAGED} # add any changes from --fix
  E_TIME=$(date +%s)
  T_STYLELINT=$((E_TIME-S_TIME))
fi

T_END=$(date +%s)

echo
echo "⏳ runtime: $((T_END-T_START))s"
echo "- eslint: ${T_ESLINT}s"
echo "- prettier: ${T_PRETTIER}s"
echo "- stylelint: ${T_STYLELINT}s"
echo

if test -z "${ESLINT_OUT}${STYLELINT_OUT}${PRETTIER_OUT}"
then
  echo "🥳 SUCCESS"
else
  echo 
  echo "🚨 ERRORS:"
  echo

  if test "${ESLINT_OUT}"
  then
    echo "🔴 eslint errors:"
    echo "${ESLINT_OUT}"
    echo
  fi

  if test "${PRETTIER_OUT}"
  then
    echo "🔴 prettier errors:"
    echo "${PRETTIER_OUT}"
    echo
  fi

  if test "${STYLELINT_OUT}"
  then
    echo "🔴 stylelint errors:"
    echo "${STYLELINT_OUT}"
    echo
  fi

  echo 
  echo
  # non-zero exit signals failure
  exit 1
fi