automatically publish new package and create release on tag

.travis.yml

@@ -50,6 +50,16 @@ jobs:
     #  env:   TRAVIS_MODE=funcTests UA=firefox     OS="OS X 10.11"
     - stage: optional
       env:   TRAVIS_MODE=funcTests UA=safari              OS="OS X 10.11" UA_VERSION="9.0"
+deploy:
+  provider: releases
+  api_key: "TODO: GITHUB OAUTH TOKEN"
+  env: TRAVIS_MODE=release
+  file_glob: true
+  file: dist/*
+  draft: true
+  skip_cleanup: true
+  on:
+    tags: true
 addons:
   sauce_connect: true
   jwt:

scripts/set-package-version.js

@@ -0,0 +1,56 @@
+const fs = require('fs');
+const package = require('../package.json');
+
+const VALID_VERSION_REGEX = /^v\d+\.\d+\.\d+$/;
+
+const TRAVIS_MODE = process.env.TRAVIS_MODE;
+let newVersion = '';
+
+try {
+  if (TRAVIS_MODE === 'release') {
+    // write the version field in the package json to the version in the git tag
+    const tag = process.env.TRAVIS_TAG;
+    if (!tag.test(VALID_VERSION_REGEX)) {
+      throw new Error('Unsuported tag for release: ' + tag);
+    }
+    // remove v
+    newVersion = tag.substring(1);
+  } else if (TRAVIS_MODE === 'releaseCanary') {
+    // bump patch in version from latest git tag
+    let currentVersion = getLatestVersionTag();
+    if (!currentVersion.test(VALID_VERSION_REGEX)) {
+      throw new Error('Latest version tag invalid: ' + tag);
+    }
+    // remove v
+    currentVersion = currentVersion.substring(1);
+
+    let matched = false;
+    newVersion = currentVersion.replace(/^(\d+)\.(\d+)\.(\d+).*$/, function(_, major, minor, patch) {
+      matched = true;
+      return major + '.' + minor + '.' + (parseInt(patch, 10) + 1);
+    });
+    if (!matched) {
+      throw new Error('Error calculating version.');
+    }
+    newVersion += '-canary.' + getCommitNum();
+  } else {
+    throw new Error('Unsupported travis mode: ' + TRAVIS_MODE);
+  }
+
+  package.version = newVersion;
+  fs.writeFileSync('./package.json', JSON.stringify(package));
+  console.log('Set version: ' + newVersion);
+} catch(e) {
+  console.error(e);
+  process.exit(1);
+}
+process.exit(0);
+
+
+function getCommitNum() {
+  return parseInt(require('child_process').execSync('git rev-list --count HEAD').toString(), 10);
+}
+
+function getLatestVersionTag() {
+  return parseInt(require('child_process').execSync('git describe origin/master --match="v*"').toString(), 10);
+}

scripts/travis.sh

@@ -27,24 +27,29 @@ elif [ "${TRAVIS_MODE}" = "funcTests" ]; then
 	if [ ${n} = ${maxRetries} ]; then
 		exit 1
 	fi
-elif [ "${TRAVIS_MODE}" = "releaseCanary" ]; then
+elif [ "${TRAVIS_MODE}" = "release" ] || [ "${TRAVIS_MODE}" = "releaseCanary" ]; then
   # update the version
   # make sure everything is fetched https://github.com/travis-ci/travis-ci/issues/3412
   git fetch --unshallow
-  node ./scripts/set-canary-version.js
+  node ./scripts/set-package-version.js
   if [[ $(node ./scripts/check-already-published.js) = "not published" ]]; then
     npm run lint
     npm run build
     npm run test:unit
     # write the token to config
     # see https://docs.npmjs.com/private-modules/ci-server-config
     echo "//registry.npmjs.org/:_authToken=${NPM_TOKEN}" >> .npmrc
-    npm publish --tag canary
-    echo "Published canary."
-    curl https://purge.jsdelivr.net/npm/hls.js@canary
-    echo "Cleared jsdelivr cache."
+    if [ "${TRAVIS_MODE}" = "releaseCanary" ]; then
+      npm publish --tag canary
+      echo "Published canary."
+      curl https://purge.jsdelivr.net/npm/hls.js@canary
+      echo "Cleared jsdelivr cache."
+    elif [ "${TRAVIS_MODE}" = "release" ]; then
+      npm publish
+      echo "Published."
+    fi
   else
-    echo "Canary already published."
+    echo "Already published."
   fi
 else
 	echo "Unknown travis mode: ${TRAVIS_MODE}" 1>&2