add eslint

.eslintrc.yml

@@ -0,0 +1,8 @@
+env:
+  node: true
+  es2021: true
+extends: 'eslint:recommended'
+parserOptions:
+  ecmaVersion: 12
+  sourceType: module
+rules: {}

.github/workflows/eslint.yml

@@ -0,0 +1,13 @@
+name: Eslint
+on:
+  push:
+
+jobs:
+  check_eslint:
+    runs-on: ubuntu-latest
+    steps:
+    - uses: actions/checkout@v2
+    - name: Install modules
+      run: |
+        sudo npm install -g eslint
+    - run: eslint index.js --ext .js,.jsx,.ts,.tsx

index.js

@@ -237,12 +237,13 @@ Q.resolve = value=>QPromise.resolve(value)
 
 const Util = process.binding('util')
 
+let _promiseState
 if(Util.getPromiseDetails){
-	function _promiseState(promise){
+	_promiseState = function(promise){
 		return Util.getPromiseDetails(promise)[0]
 	}
 } else{
-	function _promiseState(promise){
+	_promiseState = function(promise){
 		const p = util.inspect(promise)
 		if(p.includes('{ <rejected>')){
 			return 2