feat: add support for returning boolean if custom patterns are used

__tests__/main.test.ts

@@ -139,6 +139,17 @@ test('returns the paths of the filtered files (input source files)', async () =>
   expect(core.setOutput).toHaveBeenNthCalledWith(1, 'paths', EXPECTED_FILENAMES)
 })
 
+test('returns true when no custom patterns are used', async () => {
+  mockedEnv(defaultEnv)
+
+  // @ts-ignore
+  core.setOutput = jest.fn()
+
+  await run()
+
+  expect(core.setOutput).toHaveBeenNthCalledWith(3, 'has-custom-patterns', false)
+})
+
 test('returns the paths of the filtered files in the paths-output-file', async () => {
   mockedEnv({
     ...defaultEnv,
@@ -173,4 +184,5 @@ test('returns the paths of the filtered files in the paths-output-file', async (
     'paths-output-file',
     pathsOutputFile
   )
+  expect(core.setOutput).toHaveBeenNthCalledWith(3, 'has-custom-patterns', true)
 })

action.yml

@@ -73,7 +73,9 @@ outputs:
   paths:
     description: "List of filtered paths using the specified patterns and separator"
   paths-output-file:
-    description: "List of filtered paths using the specified patterns and separator stored in a tempfile"
+    description: "List of filtered paths using the specified patterns and separator stored in a temporary file"
+  has-custom-patterns:
+    description: "Indicates whether custom patterns were used"
 
 runs:
   using: 'node12'

src/main.ts

@@ -196,6 +196,14 @@ export async function run(): Promise<void> {
     core.saveState('paths-output-file', pathsOutputFile)
     core.info(`Successfully created paths-output-file: ${pathsOutputFile}`)
   }
+
+  core.setOutput(
+    'has-custom-patterns',
+    files !== '' ||
+      filesFromSourceFile !== '' ||
+      excludedFiles !== '' ||
+      excludedFilesFromSourceFile !== ''
+  )
 }
 
 if (!process.env.TESTING) {