chore: fix husky precommit hook not running code in bash (#125)

* new approach

* push main

.husky/build-changed-files.sh

@@ -0,0 +1,27 @@
+#!/bin/bash
+
+# only run the npm build script for each workspace directory that has changed files
+function run_build {
+  # convert multiline string into array
+  # @see https://stackoverflow.com/questions/24628076/convert-multiline-string-to-array
+  local IFS=$'\n'
+  local lines=($1)
+  local i
+
+  # get only the unique values from an array
+  # `lines[$i]%%/*` gets the substring up to the first '/'. so `semantic-pr-footer-v1/src/run.ts` becomes `semantic-pr-footer-v1`
+  # @see https://www.baeldung.com/linux/bash-unique-values-arrays
+  unique_dirs=($(for (( i=0; i<${#lines[@]}; i++ )) ; do echo "${lines[$i]%%/*}"; done | sort -u))
+
+  for dir in "${unique_dirs[@]}"; do
+     npm run build -w "$dir"
+  done
+}
+
+cd "$(dirname -- "$0")/../.github/actions"
+files=$(git diff HEAD~1 --name-only --relative)
+if [ "$files" != "" ]; then
+  run_build "$files"
+fi
+
+git add .

.husky/pre-commit

@@ -1,30 +1,8 @@
 #!/usr/bin/env sh
 . "$(dirname -- "$0")/_/husky.sh"
 
-# only run the npm build script for each workspace directory that has changed files
-function run_build {
-  # convert multiline string into array
-  # @see https://stackoverflow.com/questions/24628076/convert-multiline-string-to-array
-  local IFS=$'\n'
-  local lines=($1)
-  local i
-
-  # get only the unique values from an array
-  # `lines[$i]%%/*` gets the substring up to the first '/'. so `semantic-pr-footer-v1/src/run.ts` becomes `semantic-pr-footer-v1`
-  # @see https://www.baeldung.com/linux/bash-unique-values-arrays
-  unique_dirs=($(for (( i=0; i<${#lines[@]}; i++ )) ; do echo "${lines[$i]%%/*}"; done | sort -u))
-
-  for dir in "${unique_dirs[@]}"; do
-     npm run build -w "$dir"
-  done
-}
-
-cd ./.github/actions
-files=$(git diff HEAD~1 --name-only --relative)
-if [ "$files" != "" ]; then
-  run_build "$files"
-fi
-
-cd ../../
-git add .
+# this file requires bash to run in github actions (github
+# actions use dash as default `sh` command)
+# @see https://github.com/typicode/husky/issues/1326
+bash "$(dirname -- "$0")/build-changed-files.sh"
 npx lint-staged