ts ignore an entire folder

ts-ignore.sh

#!/bin/bash

if [ -z "$1" ]; then
  echo "Usage: $0 path_to_folder"
  exit 1
fi

TARGET_DIR="$1"

find "$TARGET_DIR" -type f \( -name "*.ts" -o -name "*.tsx" \) | while read -r file; do
  if ! head -n 1 "$file" | grep -q '@ts-nocheck'; then
    # macOS sed
    if [[ "$OSTYPE" == "darwin"* ]]; then
      sed -i '' '1s;^;// @ts-nocheck\n;' "$file"
    else
      # Linux sed
      sed -i '1s;^;// @ts-nocheck\n;' "$file"
    fi
    echo "Added @ts-nocheck to $file"
  fi
done

./ts-ignore /path/to/folder