change foo to bar in all js files in folder

recursive sed on files in a directory

# 
# Change foo to bar in all js,ts,jsx and tsx files
#
# - Mac variant (i.e. -i '' for inline)
# - Only sed on files that match - i.e. don't waste energy sedding when no need
# - output lines that have changed
# - don't scan node_modules and dist folders
# - ignore files with test in name
#

find . -type d \( -name node_modules -o -name dist \) -prune -false                \
  -o -type f \( -name '*.[jt]s' -o -name '*.[jt]sx' \) -exec grep -l "foo" {} \; | \
  egrep -v "test" |                                                                \
  xargs -t -n 1 -P 10 sed -i '' "s#foo#bar#g w /dev/stdout"

# Change back again

find . -type d \( -name node_modules -o -name dist \) -prune -false                \
  -o -type f \( -name '*.[jt]s' -o -name '*.[jt]sx' \) -exec grep -l "bar" {} \; | \
  egrep -v "test" |                                                                \
  xargs -t -n 1 -P 10 sed -i '' "s#bar#foo#g w /dev/stdout"
  
# List files that are going to change

find . -type d \( -name node_modules -o -name dist \) -prune -false                \
  -o -type f \( -name '*.[jt]s' -o -name '*.[jt]sx' \) -exec grep -l "foo" {} \; | \
  egrep -v "test"