use flutter-version instead of version

action.yml

@@ -2,13 +2,16 @@ name: 'Flutter Action'
 description: 'Setup your runner with Flutter environment'
 author: 'Alif Rachmawadi'
 inputs:
-  version:
+  flutter-version:
     description: 'The Flutter version to make available on the path'
     required: false
   channel:
     description: 'The Flutter build release channel'
     required: false
     default: 'stable'
+  # Deprecated option, do not use. Will not be supported after October 1, 2019
+  version:
+    description: 'Deprecated. Use flutter-version instead. Will not be supported after October 1, 2019'
 runs:
   using: 'node12'
   main: 'lib/index.js'

lib/index.js

@@ -20,8 +20,8 @@ const installer = __importStar(require("./installer"));
 function run() {
     return __awaiter(this, void 0, void 0, function* () {
         try {
-            const version = core.getInput('version', { required: false }) || '';
-            const channel = core.getInput('channel', { required: false }) || 'stable';
+            const version = core.getInput('version') || core.getInput('flutter-version') || '';
+            const channel = core.getInput('channel') || 'stable';
             yield installer.getFlutter(version, channel);
         }
         catch (error) {

src/index.ts

@@ -3,8 +3,9 @@ import * as installer from './installer';
 
 async function run() {
   try {
-    const version = core.getInput('version', {required: false}) || '';
-    const channel = core.getInput('channel', {required: false}) || 'stable';
+    const version =
+      core.getInput('version') || core.getInput('flutter-version') || '';
+    const channel = core.getInput('channel') || 'stable';
 
     await installer.getFlutter(version, channel);
   } catch (error) {