estimated-reading-time/dist/esm/word-count.js

Calculate the estimated reading time of a given text (plain text or HTML)

import * as nodeHtmlParser from 'node-html-parser';
// No funciona bien al utilizar el módulo ESM desde un fichero "index.msj" y hay que hacer esto
export const parse = nodeHtmlParser.parse || nodeHtmlParser.default.parse;
export function wordCountHtml(html) {
    const root = parse(html, { pre: true });
    const _wordCountHtml = (node) => {
        let numWords = 0;
        if (node.nodeType != 8) { // Comment node
            if (node.tagName == 'pre') {
                numWords += _wordCountHtml(parse(node.rawText));
            }
            else if (node.childNodes && node.childNodes.length > 0) {
                for (const child of node.childNodes) {
                    numWords += _wordCountHtml(child);
                }
            }
            else if (!node.isWhitespace) {
                numWords += countWordsInText(node.rawText);
            }
        }
        return numWords;
    };
    const numWords = _wordCountHtml(root);
    return numWords;
}
export function wordCountPlainText(text) {
    return countWordsInText(text);
}
function countWordsInText(text) {
    let wordsArr = text.split(/\s+/);
    wordsArr = wordsArr.filter((word) => !!word);
    return wordsArr.length;
}