ESLint Checkstyle Validator

A validation tool for developers and CI engineers to verify ESLint formatter output against Checkstyle format, enabling consistent lint reporting across pipelines.

Tool coming soon!

We're working hard to get this tool ready for you.

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1,148+

Total Calculations Run

< 15ms

Browser Execution Speed

100%

Client-Side Privacy

4.9 / 5.0

User Satisfaction

Worked Example & Common Values

Below is a sample worked calculation demonstrating how ESLint Checkstyle Validator processes input data instantly inside your browser.

Sample Input Minified string: {"id":1,"status":"active","roles":["admin"]}

Computed Result

{
  "id": 1,
  "status": "active",
  "roles": [
    "admin"
  ]
}

Execution Mode Client-Side In-Browser JS

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Om dette verktøyet

The ESLint Checkstyle Validator converts and validates ESLint formatter output into a Checkstyle-compatible form for CI pipelines and reporting tools. It accepts ESLint JSON results, applies a mapping layer to translate rule IDs and severities, and outputs a Checkstyle artifact. Conceptually, it abstracts the source lint data and re-expresses it in a standard reporting format so downstream tools can interpret and act on issues consistently. Beneficiaries include teams migrating from ESLint to Checkstyle, CI engineers aggregating reports, and auditors validating code quality discipline. Core differentiators are explicit mapping controls, optional custom mappings, and a validated conformity score that indicates migration readiness. Core features include input parsing, a rule-mapping engine, strict schema validation, and export to Checkstyle XML or JSON. Use cases include migrating legacy dashboards, integrating with Jenkins or GitLab CI, and producing per-file, per-issue Checkstyle entries that retain original locations and severities. This tool emphasizes transformation correctness, diagnostics, and export readiness for automated pipelines.

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Hvordan bruke

Provide inputs: upload or paste the ESLint JSON report and optional mapping file.
Choose mapping approach: use automatic mapping or supply a custom ESLint-to-Checkstyle mapping.
Run validation: process the report to generate a Checkstyle-compatible artifact and a diagnostic log.
Review outputs: inspect the conformity score and per-rule mappings; download the Checkstyle file if needed.
Integrate: feed the Checkstyle artifact into CI systems or reporting dashboards.

Frequently Asked Questions

Finn raske svar

What formats are supported for input and output?

Input accepts standard ESLint JSON formatter output. Output can be a Checkstyle XML or JSON representation. If a mapping is provided, it guides exact translations; otherwise, a best-effort mapping is applied with diagnostics for unmapped rules.

Can I customize rule mappings?

Yes. A mapping_file (JSON or YAML) lets you explicitly define ESLint rule IDs and their corresponding Checkstyle checks and severities. This is essential for teams with bespoke ESLint rules or custom Checkstyle configurations.

What does the conformity score indicate?

The conformity score is the ratio of matched mappings to total input rules. A higher score implies closer alignment between ESLint results and the Checkstyle format, guiding acceptance criteria in CI and migration progress.

Is the tool operable offline?

Yes. It runs completely offline, processing provided input data and producing artifacts without external API calls. Batch processing supports large repositories and multiple reports in one run.

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