Auto-increment NPM package in Azure Pipelines and publish to Azure Artifacts

auto-increment-npm

trigger:
  branches:
   include:
    - develop
    - master
  paths:
    include:
      - ./

resources:
- repo: self
    
stages:
 - stage: Publish
  displayName: Publish NPM Package
  jobs:
  - job: Publish
    displayName: Publish to VSTS NPM Feed
    pool:
      vmImage: 'ubuntu-latest'
    steps:

    - task: Bash@3
      displayName: Set NPM package patch number
      env:
        companyName: '<your company name - used in the npm feed url>'
        feedName: '<your feed name - used in the npm feed url>'
        SYSTEM_ACCESSTOKEN: $(System.AccessToken)
      inputs:
        targetType: 'inline'
        script: |
          # Get package name and version from package.json file
          packageName=$(jq -r ".name" package.json)
          package_version=$(jq -r ".version" package.json)

          get_package_id_URL="https://feeds.dev.azure.com/${companyName}/_apis/packaging/Feeds/${feedName}/packages?protocolType=Npm&packageNameQuery=$packageName"

          # next, let's get all available versions for our package
          all_versions_URL=$(curl -s -X GET -u PATUSER:$SYSTEM_ACCESSTOKEN $get_package_id_URL | jq -r '.value[0]._links.versions.href')
          all_versions=$(curl -s -X GET -u PATUSER:$SYSTEM_ACCESSTOKEN $all_versions_URL | jq -r '.value[].version')
          all=($all_versions)
          echo All package versions: $all

          # if we find out that the version we're trying to publish already exists in the feed, then let's increment patch version for that package and publish
          if [[ " ${all[@]} " =~ " ${package_version} " ]]; then
              echo Current package version found in existing packages. Iterating the patch number...
              # get latest version currently published in the feed for our package
              latest_version=$(curl -s -X GET -u PATUSER:$SYSTEM_ACCESSTOKEN $get_package_id_URL| jq -r '.value[].versions[].version')
              IFS=. read i1 i2 i3 <<< "$latest_version"
              i3_updated=$((i3 + 1))
              new_version=$i1.$i2.$i3_updated
              new_buildnumber=$i1.$i2.$i3_updated
              echo New package version: $new_version

              # update patch number variable
              echo "##vso[task.setvariable variable=patch;]$i3_updated"

              # update build number of the current build. let's keep things tidy
              echo "##vso[build.updatebuildnumber]$new_buildnumber"
              echo Replacing \"version\": \"$package_version\" with \"version\": \"$new_version\" in local package.json
              sed -i 's/"version": "'${package_version}'"/"version": "'${new_version}'"/' package.json
              echo new package.json version: $(jq -r ".version" package.json)
          fi

    - task: Npm@1
      displayName: npm install
      inputs:
        command: install

    - task: Npm@1
      displayName: npm publish
      inputs:
        command: publish
        publishRegistry: useFeed
        publishFeed: '$(feedName)'