Adds option to trim output (#9)

.github/workflows/ci.yml

@@ -14,3 +14,4 @@ jobs:
         id: package
         with:
           path: package.json
+          trim: true

README.md

@@ -11,6 +11,7 @@ steps:
     uses: juliangruber/read-file-action@v1
     with:
       path: ./package.json
+      trim: false
   - name: Echo package.json
     run: echo ${{ steps.package.outputs.content }}
 ```

action.yml

@@ -8,6 +8,9 @@ inputs:
   path:
     description: 'File path'
     required: true
+  trim:
+    description: 'Trims output'
+    required: false
 outputs:
   content:
     description: 'File content'

index.js

@@ -5,7 +5,12 @@ const { promises: fs } = require('fs')
 
 const main = async () => {
   const path = core.getInput('path')
-  const content = await fs.readFile(path, 'utf8')
+  const trim = core.getBooleanInput('trim')
+  let content = await fs.readFile(path, 'utf8')
+  if (trim) {
+    content = content.trim
+  }
+
   core.setOutput('content', content)
 }