The report data of a json-cov format are changed into a lcov format.
A conversion result is string.
npm install json2lcov --save-dev
var jsoncovToLcov = require('json2lcov');
var lcov = jsoncovToLcov(jsonCovResult);
console.log(lcov);
npm install -g mocha mocha-lcov-reporter jscoverage
npm install
npm test