istanbul-reports

HTML Report Generation

Generates a detailed HTML report that visualizes code coverage with syntax highlighting, directory views, and file views.

const reports = require('istanbul-reports');
const libReport = require('istanbul-lib-report');

// Assuming you have a coverageMap object
const context = libReport.createContext({
  dir: 'coverage', // output directory
  coverageMap: coverageMap
});

const report = reports.create('html', {
  // any options here
});

report.execute(context);

Text Report Generation

Produces a simple text report that summarizes the coverage metrics, which can be output to the console or a file.

const reports = require('istanbul-reports');
const libReport = require('istanbul-lib-report');

// Assuming you have a coverageMap object
const context = libReport.createContext({
  dir: 'coverage', // output directory
  coverageMap: coverageMap
});

const report = reports.create('text');

report.execute(context);

LCOV Report Generation

Creates an lcov report that is compatible with tools that accept the lcov format, such as coveralls.io.

const reports = require('istanbul-reports');
const libReport = require('istanbul-lib-report');

// Assuming you have a coverageMap object
const context = libReport.createContext({
  dir: 'coverage', // output directory
  coverageMap: coverageMap
});

const report = reports.create('lcovonly');

report.execute(context);