Merge pull request #36 from creyD/dev

New prettier-plugin feature

README.md

@@ -23,7 +23,7 @@ A GitHub action for styling files with [prettier](https://prettier.io).
 | same_commit | :x: | `false` | Update the current commit instead of creating a new one, created by [Joren Broekema](https://github.com/jorenbroekema), this command works only with the checkout action set to fetch depth '0' (see example 2)  |
 | commit_message | :x: | `"Prettified Code!"` | Custom git commit message, will be ignored if used with `same_commit` |
 | file_pattern | :x: | `*` | Custom git add file pattern, can't be used with only_changed! |
-| branch (deprecated with 3.0)| :white_check_mark: | - | Always set this to `${{ github.head_ref }}` in order to work both with pull requests and push events |
+| prettier_plugins | :x: | ` ` | Install Prettier plugins, i.e. `@prettier/prettier-php @prettier/some-other-plugin` |
 | only_changed | :x: | `false` | Only prettify changed files, can't be used with file_pattern! This command works only with the checkout action set to fetch depth '0' (see example 2)|
 
 > Note: using the same_commit option may lead to problems if other actions are relying on the commit being the same before and after the prettier action has ran. Keep this in mind.

action.yml

@@ -35,6 +35,10 @@ inputs:
     description: Only prettify files changed in the last commit, can't be used with file_pattern!
     required: false
     default: false
+  prettier_plugins:
+    description: Install Prettier plugins, i.e. `@prettier/prettier-php @prettier/some-other-plugin`
+    required: false
+    default: ''
 
 runs:
   using: 'docker'

entrypoint.sh

@@ -36,6 +36,19 @@ case $INPUT_PRETTIER_VERSION in
         ;;
 esac
 
+# Install plugins
+if [ -n "$INPUT_PRETTIER_PLUGINS" ]; then
+    for plugin in $INPUT_PRETTIER_PLUGINS; do
+        echo "Checking plugin: $plugin"
+        # check regex against @prettier/xyz
+        if ! echo "$plugin" | grep -Eq '(@prettier\/)+(plugin-[a-z\-]+)'; then
+            echo "$plugin does not seem to be a valid @prettier/plugin-x plugin. Exiting."
+            exit 1
+        fi
+    done
+    npm install --silent --global $INPUT_PRETTIER_PLUGINS
+fi
+
 echo "Prettifing files..."
 echo "Files:"
 prettier $INPUT_PRETTIER_OPTIONS || echo "Problem running prettier with $INPUT_PRETTIER_OPTIONS"