Add doc-site build script (#2461)

lib/main/build-site.js

@@ -0,0 +1,43 @@
+'use strict';
+
+const fs = require('fs'),
+      marky = require('marky-markdown'),
+      path = require('path'),
+      _ = require('lodash');
+
+const basePath = path.join(__dirname, '..', '..'),
+      docPath = path.join(basePath, 'doc'),
+      readmePath = path.join(docPath, 'README.md');
+
+function onComplete(error) {
+  if (error) {
+    throw error;
+  }
+}
+
+function build(type) {
+  let html =
+    marky(fs.readFileSync(readmePath, 'utf8'), { sanitize: false });
+  const header = html('h1').first();
+  const version = _.trim(header.find('span').first().text());
+
+  header.remove();
+  html = html.html();
+  html = html.replace(/<!--\s*/g, '<');
+  html = html.replace(/-->/g, '>');
+
+  html = [
+      '---',
+      'id: docs',
+      'layout: docs',
+      'title: lodash Documentation',
+      `version: ${version ? version : null}`,
+      '---',
+      html,
+    ].join('\n');
+
+  // File output
+  fs.writeFile(path.join(docPath, `${version}.html`), html, onComplete);
+}
+
+build();