build: add automate release

.gitignore

@@ -29,3 +29,4 @@ coverage
 ############################
 .node_history
 .nyc_output
+.envrc

.travis.yml

@@ -1,5 +1,29 @@
 language: node_js
+
 node_js:
-  - "node"
-  - "lts/*"
-after_success: npm run coveralls
+  - lts/*
+  - node
+
+after_success: npm run coverage
+
+stages:
+  - Test
+  - name: Release
+    if: branch = master AND commit_message !~ /(release|no-release)/
+
+jobs:
+  include:
+    - stage: Release
+      node_js: lts/*
+      install: npm install --no-package-lock
+      before_deploy:
+        - git config user.email ${GITHUB_EMAIL:-"travis@travis-ci.org"}
+        - git config user.name ${GITHUB_USER:-"Travis CI"}
+        - git remote set-url origin https://${GH_TOKEN}@github.com/${TRAVIS_REPO_SLUG}.git
+        - git checkout master
+      deploy:
+        skip_cleanup: true
+        provider: script
+        script: npm run release
+        on:
+          branch: master

package.json

@@ -34,11 +34,21 @@
     "sort-keys": "~4.1.0"
   },
   "devDependencies": {
+    "@commitlint/cli": "latest",
+    "@commitlint/config-conventional": "latest",
     "ava": "latest",
+    "ci-publish": "latest",
+    "conventional-github-releaser": "latest",
     "coveralls": "latest",
+    "finepack": "latest",
+    "git-authors-cli": "latest",
+    "husky": "latest",
+    "lint-staged": "latest",
+    "npm-check-updates": "latest",
     "nyc": "latest",
     "standard": "latest",
-    "standard-markdown": "latest"
+    "standard-markdown": "latest",
+    "standard-version": "latest"
   },
   "engines": {
     "node": ">=4"
@@ -47,10 +57,34 @@
     "index.js"
   ],
   "scripts": {
+    "contributors": "(git-authors-cli && finepack && git add package.json && git commit -m 'build: contributors' --no-verify) || true",
     "coveralls": "nyc report --reporter=text-lcov | coveralls",
     "lint": "standard-markdown && standard",
+    "postrelease": "npm run release:tags && npm run release:github && ci-publish",
+    "prerelease": "npm run update:check && npm run contributors",
     "pretest": "npm run lint",
-    "test": "nyc ava --verbose"
+    "release": "standard-version -a",
+    "release:github": "conventional-github-releaser -p angular",
+    "release:tags": "git push --follow-tags origin HEAD:master",
+    "test": "nyc ava --verbose",
+    "update": "ncu -u",
+    "update:check": "ncu -- --error-level 2"
   },
-  "license": "MIT"
+  "license": "MIT",
+  "commitlint": {
+    "extends": [
+      "@commitlint/config-conventional"
+    ]
+  },
+  "husky": {
+    "hooks": {
+      "commit-msg": "commitlint -E HUSKY_GIT_PARAMS",
+      "pre-commit": "lint-staged"
+    }
+  },
+  "lint-staged": {
+    "package.json": [
+      "finepack"
+    ]
+  }
 }