Add word counter

_conf_wc.yml

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+calc_word_count: true

cat.html

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+---
+layout: none
+---
+
+{% if site.calc_word_count %}
+	{% assign chapters = site.en | sort: "idx" %}
+	{% for chapter in chapters %}
+		{% unless chapter.homepage %}
+			{{ chapter.content }}
+		{% endunless %}
+	{% endfor %}
+{% else %}
+	Cat disabled.
+{% endif %}

utils/_count_words.js

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+#!/usr/bin/node
+
+var wordCount = require('html-word-count');
+var fs = require("fs");
+var jsdom = require("jsdom");
+
+var text = fs.readFileSync("_site/cat.html");
+
+const { JSDOM } = jsdom;
+const { window } = new JSDOM(text);
+const { document } = (window).window;
+global.document = document;
+var $ = require('jquery')(window);
+
+$("pre").remove();
+
+console.log(wordCount(document.documentElement.innerHTML)); // 2

utils/count_words.sh

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+#!/bin/bash
+
+jekyll build --config _config.yml,_conf_wc.yml
+./utils/_count_words.js