Travis ci 如何使用travis build stages有条件地排除阶段/作业（测试版功能）

试图让travis跳过PR/非主分支构建的发布阶段，但我似乎没有找到正确的方法

travis配置如下所示：

我也试过了

jobs:
  include:
    - stage: release
      if: branch = master
      node_js: lts/*
      script: echo "Deploying to npm ..."
      deploy:
        provider: script
        skip_cleanup: true
        script:
          - npx semantic-release

及

但是travis总是执行发布阶段——它不运行

npx语义发布

，但它仍然要经过初始化、运行测试等过程

jobs:
  include:
    - stage: release
      if: branch = master
      node_js: lts/*
      script: echo "Deploying to npm ..."
      deploy:
        provider: script
        skip_cleanup: true
        script:
          - npx semantic-release

jobs:
  include:
    -
      if: branch = master 
    - stage: release
      node_js: lts/*
      script: echo "Deploying to npm ..."
      deploy:
        provider: script
        skip_cleanup: true
        script:
          - npx semantic-release