get-epsg-code/lib/parse/proj4js.js

Gets EPSG Code for Various Inputs (incl. OGC WKT, ESRI WKT, GML, Mapfile, PROJ String, Proj4js String, XML)

function parseProj4JS(input, { debug = false } = { debug: false }) {
  const start = input.indexOf(":") + 1;
  const end = input.indexOf('"', start + 2);
  const str = input.substring(start, end);
  if (debug) console.log('parseProj4JS str: "' + str + '"');
  if (str) return Number(str);
}

module.exports = parseProj4JS;
module.exports.default = parseProj4JS;