Jenkinsfile Formatter

The Jenkinsfile Formatter analyzes a Jenkins pipeline script and outputs a consistently formatted version that adheres to chosen indentation and wrapping rules. It supports Declarative and Scripted pipelines, preserving comments and string literals while restructuring blocks for readability. The tool operates in two phases: parsing (when possible) to infer structural boundaries, and a formatting pass that applies indentation, brace alignment, and line wrapping. By normalizing style, teams gain faster code reviews and fewer stylistic diffs in pull requests. The formatter is deterministic, repeatable, and designed to handle large files by processing in chunks without altering pipeline semantics. It is useful for CI/CD teams standardizing pipeline templates, repository onboarding, and codebase maintenance across multiple projects. The tool’s unique value lies in its ability to apply consistent style across varied pipeline definitions, reducing cognitive load and enabling reliable diffs during collaboration. Core features include configurable indentation (spaces or tabs), line-length control, optional comment preservation, Groovy version awareness, and a safe fallback when parsing is not possible. Use cases include onboarding new pipelines, enforcing team conventions, and preparing pipelines for code reviews where consistency matters more than ad hoc formatting. The tool does not validate pipeline execution or semantics; it focuses solely on structural presentation and readability, ensuring that the formatted Jenkinsfile remains semantically equivalent to the input.