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    0.6.1 • Public • Published


    A toolkit for consumers of Node.js diagnostic Reports

    Build Status Latest Version Licensed Apache-2.0


    • Run heuristics ("Rules") against diagnostic reports to uncover issues needing attention
      • Comes with a set of built-in Rules and a "recommended" configuration
      • Custom, extendable, and shareable Rules
    • Purpose-built, "smart" diagnostic report diffing
      • "What has changed from last report?"
      • Ignores fields that don't matter
    • Automatically redacts sensitive information from report output
      • Redacts cloud provider tokens, session IDs, etc., from environment variables
      • Redaction available as a single operation--use this before sending the report somewhere else!
    • A friendly, colorful command-line interface
    • Two public APIs: Promise-based and Observable-based

    Other Stuff Worth Mentioning

    • A choice of output formats:
      • Tabular, human-readable output
      • JSON
      • CSV
    • Handles one or more report files
    • Written using ES modules to facilitate bundling as library for the web

    Installation & Usage

    🚨 WARNING! 🚨

    As per semantic versioning, report-toolkit should be considered experimental until it reaches v1.0.0. Until then, the command-line options, programmatic API or output could change at any time.

    report-toolkit is unlikely to reach v1.0.0 until Diagnostic Reports become a stable Node.js API.

    For CLI Usage

    npx report-toolkit --help

    or install globally:

    npm install -g report-toolkit && \
    report-toolkit --help

    For Usage as a Library

    npm install report-toolkit


    // my-app.js
    const {inspect} = require('report-toolkit');
    async function main() {
      const report = JSON.parse(;
      // configuration automatically loaded from `.rtkrc.js` in CWD
      const results = await inspect(report);
      if (results.length) {
        results.forEach(result => {
          // log problem and associated rule ID
          console.log(`${result.message} (${})`);
      } else {
        console.log('no problems!');

    About Diagnostic Reports

    Diagnostic Reports landed as an experimental feature in Node.js v11.8.0.

    The Node.js documentation describes reports:

    "The report is intended for development, test and production use, to capture and preserve information for problem determination. It includes JavaScript and native stack traces, heap statistics, platform information, resource usage etc. With the report option enabled, diagnostic reports can be triggered on unhandled exceptions, fatal errors and user signals, in addition to triggering programmatically through API calls."



    Future Ideas, Extensions & Use Cases

    • report-toolkit-as-a-service: send reports to a service which returns inspection or diff results
    • Client-side ("in your app") wrapper for report transmission or direct invocation of report-toolkit
    • Use CLI or API to trigger report generation from a running node process & interpret results; could be real-time
    • Easy cloud deployment & integration
    • "Connectors" for logging, tracing & observability tools
    • Web or Electron-based GUI
    • Adapters for frameworks
    • IDE/editor integration: generate a report from running process, view results

    See Also



    Copyright © 2019-2020, IBM. Licensed Apache-2.0


    npm i report-toolkit

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