add npm in .travis.yml

fishercoder1534 · fishercoder1534 · commit 00ad2498e6ae · 2020-07-11T06:54:50.000-07:00
diff --git a/.travis.yml b/.travis.yml
@@ -6,6 +6,9 @@ jdk:
 before_script:
 - chmod a+x gradlew
 
+node_js: "v13.7.0"
+install: "npm install"
+
 script: ./gradlew clean build
 
 notifications:
