Added prettier_version parameter

README.md

@@ -12,6 +12,7 @@ A GitHub action for styling files with [prettier](https://prettier.io).
 | Parameter | Required | Default | Description |
 | - | :-: | :-: | - |
 | dry | :x: | False | Runs the action in dry mode. Files wont get changed and the action fails if there are unprettified files. |
+| prettier_version | :x: | False | Specific prettier version (by default use latest) |
 | prettier_options | :x: | `--write **/*.js` | Prettier options (by default it applies to the whole repository) |
 | commit_options | :x: | - | Custom git commit options |
 | commit_message | :x: | Prettified Code! | Custom git commit message |

action.yml

@@ -26,6 +26,10 @@ inputs:
     description: Running the script in dry mode just shows whether there are files that should be prettified or not
     required: false
     default: False
+  prettier_version:
+    description: Specific version of prettier (by default just use the latest version)
+    required: false
+    default: False
 
 runs:
   using: 'docker'

entrypoint.sh

@@ -37,7 +37,11 @@ _git_push() {
 
 # PROGRAM
 echo "Installing prettier..."
-npm install --silent --global prettier
+if $INPUT_PRETTIER_VERSION; then
+  npm install --silent --global prettier@$INPUT_PRETTIER_VERSION
+else
+  npm install --silent --global prettier
+fi
 
 echo "Prettifing files..."
 echo "Files:"