Remove deprecated single 'file' argument

This was deprecated a long time ago and is now finally removed.

Author: svenstaro

CHANGELOG.md

@@ -1,4 +1,7 @@
 # Changelog
+## 3.0.0 - 2026-03-16
+- Remove deprecated `file` arguments - use `files`
+
 ## 2.5.2 - 2026-03-16
 - Actually fix last botched release
 

action.yml

@@ -5,13 +5,9 @@ branding:
   icon: file-minus
   color: blue
 inputs:
-  file:
-    description: 'Local file to pack (deprecated, prefer `files`)'
-    required: true
-    deprecationMessage: 'Prefer "files" supporting globs instead of "file"'
   files:
     description: 'Newline separated globs to pack'
-    required: false
+    required: true
   args:
     description: 'Arguments to pass to UPX'
   strip:

dist/index.js

@@ -30980,7 +30980,7 @@ async function downloadUpx() {
     }
     throw 'unsupported OS';
 }
-function resolve(input) {
+function resolve_files(input) {
     return input
         .split(/\r?\n/)
         .map(line => line.trim())
@@ -30991,8 +30991,7 @@ function resolve(input) {
 }
 async function run() {
     try {
-        const paths = resolve(getInput('files', { required: false }) ||
-            getInput('file', { required: false }));
+        const paths = resolve_files(getInput('files', { required: true }));
         const args = getInput('args');
         const strip = getInput('strip') || 'true';
         const strip_args = getInput('strip_args');
@@ -31022,7 +31021,10 @@ async function run() {
         throw error;
     }
 }
-run();
+const isMainModule = process.argv[1] && process.argv[1].endsWith('main.js');
+if (isMainModule) {
+    run();
+}
 
 var __webpack_exports__run = __webpack_exports__.e;
 export { __webpack_exports__run as run };

src/main.ts

@@ -39,7 +39,7 @@ async function downloadUpx(): Promise<string> {
   throw 'unsupported OS'
 }
 
-function resolve(input: string): string[] {
+function resolve_files(input: string): string[] {
   return input
     .split(/\r?\n/)
     .map(line => line.trim())
@@ -53,10 +53,7 @@ function resolve(input: string): string[] {
 
 export async function run(): Promise<void> {
   try {
-    const paths = resolve(
-      core.getInput('files', {required: false}) ||
-        core.getInput('file', {required: false})
-    )
+    const paths = resolve_files(core.getInput('files', {required: true}))
 
     const args = core.getInput('args')
     const strip = core.getInput('strip') || 'true'
@@ -93,4 +90,7 @@ export async function run(): Promise<void> {
   }
 }
 
-run()
+const isMainModule = process.argv[1] && process.argv[1].endsWith('main.js')
+if (isMainModule) {
+  run()
+}