Function getSignalsToNamesMapping

lib/internal/util.js:357–367

()

let signalsToNamesMapping;
function getSignalsToNamesMapping() {
  if (signalsToNamesMapping !== undefined)
    return signalsToNamesMapping;

  signalsToNamesMapping = { __proto__: null };
  for (const key in signals) {
    signalsToNamesMapping[signals[key]] = key;
  }

  return signalsToNamesMapping;
}

function convertToValidSignal(signal) {
  if (typeof signal === 'number' && getSignalsToNamesMapping()[signal])