build: support Node.js 15.x

Author: kkalavantavanich

.github/workflows/ci.yml

@@ -27,6 +27,7 @@ jobs:
         - Node.js 12.x
         - Node.js 13.x
         - Node.js 14.x
+        - Node.js 15.x
 
         include:
         - name: Node.js 0.10
@@ -90,6 +91,9 @@ jobs:
         - name: Node.js 14.x
           node-version: "14.19"
 
+        - name: Node.js 15.x
+          node-version: "15.14"
+
     steps:
     - uses: actions/checkout@v2
 

appveyor.yml

@@ -16,6 +16,7 @@ environment:
     - nodejs_version: "12.22"
     - nodejs_version: "13.14"
     - nodejs_version: "14.19"
+    - nodejs_version: "15.14"
 cache:
   - node_modules
 install: