get call location of function for tests\logs\etc.

getCallLocation.js

function getCallLocation(stopStackFnName) {
  stopStackFnName = stopStackFnName || 'getCallLocation';

  function getErrorObject() {
    try {
      throw new Error('');
    } catch (err) {
      return err;
    }
  }

  const err = getErrorObject();
  const stack = err.stack.split(/\r?\n/).map((line) => line.trim());
  const thisFunctionCall = stack.find((stackLine) => stackLine.startsWith(`at ${ stopStackFnName }`));
  const indexOfThisFunction = stack.indexOf(thisFunctionCall);
  const lineOfCall = stack[indexOfThisFunction + 1];
  const insideBrackets = lineOfCall.replace(/^.*\(/, '').replace(/\).*$/, '');
  const getLineAndColumnNumbersRegex = /:(\d+):(\d+)$/;
  const result = getLineAndColumnNumbersRegex.exec(insideBrackets);

  return {
    line: result[1],
    column: result[2]
  };
}


const location = getCallLocation();

console.log(location);