Ask to overwrite config files when installing

packages/eslint/package.json

@@ -21,7 +21,7 @@
     "access": "public"
   },
   "scripts": {
-    "postinstall": "sh postinstall.sh"
+    "postinstall": "bash postinstall.sh"
   },
   "peerDependencies": {
     "@typescript-eslint/eslint-plugin": "^5.46.1",

packages/eslint/postinstall.sh

@@ -1,5 +1,13 @@
 #!/bin/bash
 
 # see sharing eslint config & npm scoped modules https://eslint.org/docs/latest/developer-guide/shareable-configs#npm-scoped-modules
-echo "extends: ['@r1oga']" > "$INIT_CWD/.eslintrc.yaml"
-cp .eslintignore "$INIT_CWD/.eslintignore"
+if [[ ! -f  "$INIT_CWD/.eslintrc.yaml" ]];then
+  echo "extends: ['@r1oga']" > "$INIT_CWD/.eslintrc.yaml"
+else
+    read -p "overwrite .eslintrc.yaml?(Yn) " overwrite
+    if [[  -z "$overwrite" || "$overwrite" -eq "Y" || "$overwrite" -eq "y" ]];then
+      echo "extends: ['@r1oga']" > "$INIT_CWD/.eslintrc.yaml"
+    fi
+fi
+
+cp -i .eslintignore "$INIT_CWD/.eslintignore"

packages/prettier/package.json

@@ -20,7 +20,7 @@
   },
   "scripts": {
     "build": "js-yaml .prettierrc.yaml > .prettierrc.json",
-    "postinstall": "sh postinstall.sh"
+    "postinstall": "bash postinstall.sh"
   },
   "peerDependencies": {
     "prettier": "^2.8.1"

packages/prettier/postinstall.sh

@@ -1,4 +1,13 @@
 #!/bin/bash
 
-echo "'@r1oga/prettier-config'" > "$INIT_CWD/.prettierrc.yaml"
-cp .prettierignore "$INIT_CWD/.prettierignore"
+if [[ ! -f "$INIT_CWD/.prettierrc.yaml" ]];then
+  echo "'@r1oga/prettier-config'" > "$INIT_CWD/.prettierrc.yaml"
+else
+  # shellcheck disable=SC2162
+  read -p "overwrite .prettierrc.yaml?(Yn) " overwrite
+  if [[  -z "$overwrite" || "$overwrite" -eq "Y" || "$overwrite" -eq "y" ]];then
+      echo "'@r1oga/prettier-config'" > "$INIT_CWD/.prettierrc.yaml"
+  fi
+fi
+
+cp -i .prettierignore "$INIT_CWD/.prettierignore"