Add 'ignore-suffixes' option to input

README.md

@@ -13,6 +13,7 @@ For more information on these inputs, see the [Workflow syntax for GitHub Action
 - `fail-on-warnings`: The action fails if any warning was found. This will always fail on errors. Optional. Default: `false`
 - `working-directory`: The working directory. Optional. Default: `./`
 - `line-length`: The maximum line length. Optional. The formatter will use its default: `80`
+- `ignore-suffixes`: Ignore the specified suffix, split multi suffixes with `|`
 
 ### Outputs
 None.

action.yml

@@ -13,6 +13,10 @@ inputs:
     default: ./
   line-length:
     description: 'The maximum line length. Optional. The formatter will use its default: `80`'
+  ignore-suffixes:
+    description: 'Ignore the specified suffix, split multi suffixes with `|`'
+    default: '.g.dart|.freezed.dart'
+
 runs:
   using: 'node20'
   main: 'dist/index.js'

src/index.js

@@ -101,12 +101,15 @@ async function format(workingDirectory) {
   args.push('.');
 
   await exec.exec('dart', args, options);
-  
+
   let warningCount = 0;
   const lines = output.trim().split(/\r?\n/);
 
+  const ignoreSuffixes = core.getInput("ignore-suffixes").split("|");
+
   for (const line of lines) {
     if (!line.endsWith('.dart')) continue;
+    if (ignoreSuffixes.some(e => line.endsWith(e))) continue;
     const file = line.substring(8); // Remove the "Changed " prefix
 
     console.log(`::warning file=${file}::Invalid format. For more details, see https://dart.dev/guides/language/effective-dart/style#formatting`);