LCOV formatting

Each class provided by this library has a dedicated toString() method returning the corresponding data formatted as LCOV string. All you have to do is to create the adequate structure using these different classes, and to export the final result:

import console from "node:console";
import {FunctionCoverage, LineCoverage, LineData, Report, SourceFile} from "@cedx/lcov";

const sourceFile = new SourceFile("/home/cedx/lcov.js/fixture.js", {
  functions: new FunctionCoverage({found: 1, hit: 1}),
  lines: new LineCoverage({found: 2, hit: 2, data: [
    new LineData({lineNumber: 6, executionCount: 2, checksum: "PF4Rz2r7RTliO9u6bZ7h6g"}),
    new LineData({lineNumber: 7, executionCount: 2, checksum: "yGMB6FhEEAd8OyASe3Ni1w"})
  ]})
});

const report = new Report("Example", [sourceFile]);
console.log(report.toString());

The Report.toString() method will return a LCOV report formatted like this:

TN:Example
SF:/home/cedx/lcov.js/fixture.js
FNF:1
FNH:1
DA:6,2,PF4Rz2r7RTliO9u6bZ7h6g
DA:7,2,yGMB6FhEEAd8OyASe3Ni1w
LF:2
LH:2
end_of_record

Tip

See the API reference or the source code of this library for detailed information on the available classes.