54 lines
1.8 KiB
JavaScript
54 lines
1.8 KiB
JavaScript
var MarkdownIt = require('markdown-it'),
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converter = new MarkdownIt({
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html: true,
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breaks: true,
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linkify: true
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})
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.use(require('markdown-it-footnote'))
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.use(require('markdown-it-lazy-headers'))
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.use(require('markdown-it-mark'))
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.use(function namedHeaders(md) {
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// match legacy Showdown IDs
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var slugify = function (inputString, usedHeaders) {
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var slug = inputString.replace(/[^\w]/g, '').toLowerCase();
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if (usedHeaders[slug]) {
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usedHeaders[slug] += 1;
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slug += usedHeaders[slug];
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}
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return slug;
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};
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var originalHeadingOpen = md.renderer.rules.heading_open;
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// originally from https://github.com/leff/markdown-it-named-headers
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// moved here to avoid pulling in http://stringjs.com dependency
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md.renderer.rules.heading_open = function (tokens, idx, something, somethingelse, self) {
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var usedHeaders = {};
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tokens[idx].attrs = tokens[idx].attrs || [];
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var title = tokens[idx + 1].children.reduce(function (acc, t) {
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return acc + t.content;
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}, '');
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var slug = slugify(title, usedHeaders);
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tokens[idx].attrs.push(['id', slug]);
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if (originalHeadingOpen) {
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return originalHeadingOpen.apply(this, arguments);
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} else {
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return self.renderToken.apply(self, arguments);
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}
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};
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});
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// configure linkify-it
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converter.linkify.set({
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fuzzyLink: false
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});
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module.exports = {
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render: function (markdown) {
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return converter.render(markdown);
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}
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};
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