quran-meta

Version:

Library with meta data and functionality related to Holy Quran

11 lines (10 loc) • 418 B

JavaScript

import { SurahList } from "./lists/surahList.mjs";
import { binarySearch } from "./utils.mjs";
import { checkValidAyahId } from "./validation.mjs";
export function findSurahAyahByAyahId(ayahId) {
  checkValidAyahId(ayahId);
  const ss = binarySearch(SurahList, ayahId, (aya, b) => aya - b[0]);
  const suraNum = ss < 0 ? -ss - 2 : ss;
  const ayahNo = ayahId - SurahList[suraNum][0] + 1;
  return [suraNum, ayahNo];
}