@technobuddha/library/syllables/syllables.mjs

A large library of useful functions

import { empty } from '../constants';
import toASCII from '../toASCII';
import splitWords from '../splitWords';
/**
 * Approximate the number of syllables in a string
 *
 * @param input The string
 * @returns the number of syllables
 */
export function syllables(input) {
    return splitWords(toASCII(input.toLowerCase())).reduce((count, word) => {
        if (word.length <= 3) {
            count++;
        }
        else {
            word = word.replace(/(?:[^laeiouy]es|ed|[^laeiouy]e)$/u, empty).replace(/^y/u, empty);
            const match = word.match(/[aeiouy]{1,2}/ug);
            count += match === null ? 0 : match.length;
        }
        return count;
    }, 0);
}
export default syllables;