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  1. Jenkins
  2. JENKINS-60734

Replace js-builder with webpack



    • Improvement
    • Status: Resolved (View Workflow)
    • Minor
    • Resolution: Fixed
    • core
    • None
    • Jenkins 2.217


      Right now Jenkins uses a combination of js-builder and gulp as the toolchain to build the frontend assets.

      There are many reasons to replace js-builder with a modern, industry-standard tool:

      • It does not support many new technologies and techniques commonly used nowadays, like post-css.
      • It is not being actively maintained.
      • It is a tool used only within the Jenkins project. This and the lack of comprehensive documentation makes it difficult for developers to modify or extend the toolchain.
      • It is based on outdated tools (i.e. browserify) and uses a module system that is incompatible with modern JS build tools.

      I propose basing the new frontend toolchain on webpack. It is the tool that has the more usage, support and customizability.

      The js-builder ecosystem

      js-builder offers the possibility, using some sibling libraries (js-modules, js-libs), to have shared libraries across multiple projects running on the same window. For example, if both Jenkins core and a plugin use the same version of jquery, it would only be loaded once.

      While this can seem like a great idea, having this behaviour on Core can be problematic. Having core load its own libraries would only add an extra 50-100KB of JS code. It introduces a huge maintainability burden and locks the project into using js-builder & friends.

      Planned changes

      The goal of this improvement is to replace js-builder with webpack, and use NPM versions of the js-libs used on the project (handlebars, jquery, bootstrap).


        Issue Links


            oleg_nenashev Oleg Nenashev added a comment -

            It was released in Jenkins 2.217. Thanks fqueiruga!

            oleg_nenashev Oleg Nenashev added a comment - It was released in Jenkins 2.217. Thanks fqueiruga !


              fqueiruga Félix Queiruga Balado
              fqueiruga Félix Queiruga Balado
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