Assemble plugin to automatically generate and attach ids and anchor links to headers

anchors.js

/*eslint-env node */

var cheerio = require('cheerio'),
	htmlStrip = require('htmlstrip-native');


var options = {
	stage: 'render:post:page'
};

module.exports = function (params, callback) {
	'use strict';

	var $ = cheerio.load(params.content);
	var headings = $('h3,h4,h5,h6');
	headings.map(function(index, element) {
		var $element = $(element);
		if(!element.attribs.id) {
			var id = $element.text();
			id = htmlStrip.html_strip(id);
			id = id.replace(/"/g, "\\\"");
			$element.attr('id', id);
			$element.addClass('anchor');
			$('<a>').attr('href', '#' + id).addClass('icon-link').insertAfter($element);
		}
	});
	params.content = $.html();
	callback();
};

module.exports.options = options;