List local JS module dependencies

find-deps.sh

#!/usr/bin/env bash
set -euo pipefail

absolutize() {
  local path=$1
  if [[ -d $path ]]; then
    (cd $path; pwd -P)
  else
    echo $(cd $(dirname $path); pwd -P)/$(basename $path)
  fi
}

relativize() {
  local base=$1
  local path=$2
  if [[ ! -d $base ]]; then
    base=$(dirname $base)
  fi
  local base_abs=$(cd $base; pwd -P)/
  local path_abs=$(cd $(dirname $path); pwd -P)/$(basename $path)
  echo ${path_abs##$base_abs}
}

root=$(absolutize ${1:-$(dirname $0)})

find $root -name node_modules -prune -o -name test -prune -o -name migrations -prune -o -type f -name \*.js | while read module_path; do
  sed -En "s/.+ require\('(\.[^']+).*/\1/p" $module_path | while read require_arg; do
    require_path=$(absolutize "$(dirname $module_path)/${require_arg}.js")
    echo $(relativize $root $module_path) $(relativize $root $require_path)
  done | uniq
done