Method constructor

src/lib/util.js:11–17

(msg, code = 'INTERNAL_ERROR', data)

export class MvError extends Error {
  constructor(msg, code = 'INTERNAL_ERROR', data) {
    super(msg);
    this.code = code;
    if (data !== undefined) {
      this.data = data;
    }
  }
}

export function sortAndDeDup(unordered, compFn) {