travisci: add alpine test/publish to ci

.dockerignore

@@ -0,0 +1,2 @@
+node_modules
+npm-debug.log

.travis.yml

@@ -1,11 +1,12 @@
 language: node_js
 env:
   - LINUX_CXX=g++-4.8
+dist: trusty
 os:
   - linux
   - osx
 node_js:
-  - "node"
+  - "13"
   - "12"
   - "10"
   - "8"
@@ -20,5 +21,12 @@ script:
   - npm run build:ts
   - npm run build
   - npm test
+  - if [[ "$TRAVIS_OS_NAME" == "linux" ]]; then docker build --build-arg VERSION=$TRAVIS_NODE_VERSION -t tmp/alpine-native-metrics .; fi;
 after_success:
-  - echo "Publishing"; npm install node-pre-gyp-github@1.4.3; ./node_modules/.bin/node-pre-gyp configure; ./node_modules/.bin/node-pre-gyp build; ./node_modules/.bin/node-pre-gyp package; ./node_modules/.bin/node-pre-gyp-github publish;
+  if ([ "$TRAVIS_BRANCH" == "master" ] || [ ! -z "$TRAVIS_TAG" ]) && 
+      [ "$TRAVIS_PULL_REQUEST" == "false" ]; then
+    docker run -e NODE_PRE_GYP_GITHUB_TOKEN tmp/alpine-native-metrics; fi;
+    echo "Publishing"; npm install node-pre-gyp-github@1.4.3; ./node_modules/.bin/node-pre-gyp configure; ./node_modules/.bin/node-pre-gyp build; ./node_modules/.bin/node-pre-gyp package; ./node_modules/.bin/node-pre-gyp-github publish;
+  else
+    echo "Not publishing"
+  fi

Dockerfile

@@ -0,0 +1,26 @@
+ARG VERSION=latest
+FROM mhart/alpine-node:${VERSION}
+
+WORKDIR .
+
+COPY . .
+
+RUN node --version
+
+# Install Python dependencies
+RUN apk add --update \
+    python \
+    python-dev \
+    py-pip \
+    build-base \
+  && pip install virtualenv \
+  && rm -rf /var/cache/apk/*
+
+# Build & Test
+RUN npm install
+RUN npm run build:ts
+RUN npm run build
+RUN npm test
+
+# # Publish binary to github
+CMD npm run publish:github

package.json

@@ -27,7 +27,8 @@
     "test:renamebinding": "rename-files ./ binding.gyp temp",
     "test:renametestbinding": "cp test.gyp binding.gyp",
     "test:renameoriginalbinding": "rename-files ./ temp binding.gyp",
-    "clean": "rimraf build/"
+    "clean": "rimraf build/",
+    "publish:github": "echo 'Publishing'; npm install node-pre-gyp-github@1.4.3; ./node_modules/.bin/node-pre-gyp configure; ./node_modules/.bin/node-pre-gyp build; ./node_modules/.bin/node-pre-gyp package; ./node_modules/.bin/node-pre-gyp-github publish;"
   },
   "gypfile": true,
   "license": "MIT",

test/EndToEnd.js

@@ -7,6 +7,8 @@ const emitter = new NativeMetricEmitter();
 describe("#EndToEnd", () => {
   it("should collect manual global.gc events", () => {
     if (emitter._gcProfiler) {
+      emitter.getGCData(); // clear any transient GCs
+
       // Verify precondition
       assert.deepEqual({}, emitter.getGCData());