node_modules/graphql/jsutils/invariant.mjs

export default function invariant(condition, message) {
  var booleanCondition = Boolean(condition);
  /* istanbul ignore else (see transformation done in './resources/inlineInvariant.js') */

  if (!booleanCondition) {
    throw new Error(message != null ? message : 'Unexpected invariant triggered.');
  }
}