fix lcov

///////////////////////////////
package.json
////////////////////////////////
"scripts": {
    "fixlcov": "node fixlcov.js"
  },

/////////////////////////////////
fixlcov.js
///////////////////////////////
'use strict';

const path = require('path');
const { readFileSync, writeFileSync } = require('fs');

(() => {
  const lcovFile = path.resolve(__dirname, './coverage/lcov.info')
  const rawFile = readFileSync(lcovFile, 'utf8')
  const rebuiltPaths = rawFile.split('\n').map(singleLine => {
    if (singleLine.startsWith('SF:')) {
      return singleLine.replace('SF:', `SF:${__dirname}/`)
    }
    return singleLine
  }).join('\n')
  console.log(rebuiltPaths)
  writeFileSync(lcovFile, rebuiltPaths, 'utf8')
})()