Flakiness Node.js SDK

The Flakiness SDK provides a comprehensive set of tools for creating and managing Flakiness JSON Reports in Node.js.

Installation

npm i @flakiness/sdk @flakiness/flakiness-report

Quick Start

Here's a minimal example of creating a Flakiness JSON Report:

import { FlakinessReport } from '@flakiness/flakiness-report';
import {
  GitWorktree,
  ReportUtils,
  writeReport,
  uploadReport,
  CIUtils 
} from '@flakiness/sdk';

// Initialize git worktree and environment
const worktree = GitWorktree.create(process.cwd());
const env = ReportUtils.createEnvironment({ name: 'CI' });

// Create a simple test report
const report: FlakinessReport.Report = {
  category: 'testreport',
  commitId: worktree.headCommitId(),
  url: CIUtils.runUrl(),
  environments: [env],
  suites: [{
    title: 'My Test Suite',
    type: 'describe',
    tests: [{
      title: 'My Test',
      location: { file: 'test.spec.ts', line: 10, column: 1 },
      attempts: [{
        environmentIdx: 0,
        status: 'passed',
        expectedStatus: 'passed',
        duration: 100 as FlakinessReport.DurationMS,
      }],
    }],
  }],
  startTimestamp: Date.now() as FlakinessReport.UnixTimestampMS,
  duration: 100 as FlakinessReport.DurationMS,
};

// Write report to disk or upload to Flakiness.io
await writeReport(report, [], './flakiness-report');
// Or: await uploadReport(report, [], { flakinessAccessToken: 'your-token' });

Entry Points

The SDK provides two entry points:

@flakiness/sdk

The main entry point for Node.js environments. Provides full access to all SDK functionality including:

• Git repository utilities
• File system operations
• System resource monitoring
• Report upload/download
• Local report viewing

@flakiness/sdk/browser

A browser-compatible entry point with a subset of utilities that work in browser environments. Exports:

• ReportUtils - Browser-safe utilities (normalizeReport, stripAnsi, visitTests)

Use this entry point when you need to process or manipulate reports in browser-based tools or web applications.

Top-Level Exports

Building Reports

• CIUtils - Utilities to extract CI/CD information (run URLs, environment detection)
• GitWorktree - Git repository utilities for path conversion and commit information
• ReportUtils - Namespace with utilities for report creation and manipulation:
  • createEnvironment() - Create environment objects with system information
  • normalizeReport() - Deduplicate environments, suites, and tests
  • collectSources() - Extract source code snippets for locations in the report
  • stripAnsi() - Remove ANSI escape codes from strings
  • visitTests() - Recursively visit all tests in a report
  • createFileAttachment() / createDataAttachment() - Create report attachments
• CPUUtilization - Track CPU utilization over time via periodic sampling
• RAMUtilization - Track RAM utilization over time via periodic sampling

Working with Reports

• readReport() - Read a Flakiness report and its attachments from disk
• showReport() - Start a local server and open the report in your browser
• uploadReport() - Upload reports and attachments to Flakiness.io
• writeReport() - Write reports to disk in the standard Flakiness report format

Project Configuration

• FlakinessProjectConfig - Manage project configuration stored in .flakiness/config.json