bootstrap/specs/phoenix/template/.githooks/pre-commit

#!/usr/bin/env bash
set -e

MIX_FILES=$(
  git --no-pager diff --name-status --no-color --cached | \
    awk '$1 != "D" && $2 ~ /\.exs?$/ {print $NF}'
)

if [ -n "$MIX_FILES" ]; then
  mix format "$MIX_FILES"
  git add "$MIX_FILES"
fi

WEB_FILES=$(
  git --no-pager diff --name-status --no-color --cached | \
    awk '$1 != "D" && $2 ~ /\.jsx?$|\.tsx?$/ {print $NF}'
)

if [ -n "$WEB_FILES" ]; then
  prettier --write "$WEB_FILES"
  git add "$WEB_FILES"
fi