.travis.yml

language: node_js
if: tag IS blank
node_js:
  - "8"
services:
  - docker
cache:
  directories:
  - node_modules
script:
  - npm run lint
  - npm run build
before_deploy:
  - >   
    if [ "$TRAVIS_BRANCH" != "master" ]; then
      sed -i -e "s/\(\"version\":\\s\+\"\([0-9]\+\.\?\)\+\)/\1-pre.$TRAVIS_BUILD_NUMBER/" package.json;
    fi;
    if ! [ "$BEFORE_DEPLOY_RUN" ]; then
      export BEFORE_DEPLOY_RUN=1;
      git config --local user.name "$git_user";
      git config --local user.email "$git_email";
      git tag "$(node -p 'require(`./package.json`).version')";
    fi;
deploy:
  - provider: npm
    email: $auth_email
    api_key: $auth_token
    edge: true
    skip_cleanup: true
    on:
      branch: master
  - provider: npm
    email: $auth_email
    api_key: $auth_token
    edge: true
    skip_cleanup: true
    tag: next
    on:
      branch: develop
  - provider: releases
    api_key: $git_token
    skip_cleanup: true
    on:
      branch: master