如果缺少本地node_modules文件夹，DevOps将运行npm install

Question

I am using DevOps build definition to bundle an AngularJs app. Is there a way to check if the local node_modules exists and if it doesn't exist run the npm install command before the bundling process takes place?

Answer 1

You can add a script task to check if the folder exists and then set a variable. For the npm task, you need to set the condition to run. Please refer to following content.

- task: Bash@3
  inputs:
    targetType: 'inline'
    script: 'if [ -d "node_modules" ]; then
            echo "##vso[task.setVariable variable=FOLDEREXISTS]true"
      fi'

- task: Npm@1
  inputs:
    command: 'install'
    condition: eq(variables.FOLDEREXISTS, 'true')