add mechanism for draft blog posts

site/content/blog/2016-11-26-frameworks-without-the-framework.md

@@ -1,7 +1,6 @@
 ---
 title: Frameworks without the framework: why didn't we think of this sooner?
 description: You can't write serious applications in vanilla JavaScript without hitting a complexity wall. But a compiler can do it for you.
-pubdate: 2016-11-26
 author: Rich Harris
 authorURL: https://twitter.com/Rich_Harris
 ---

site/content/blog/2017-08-07-the-easiest-way-to-get-started.md

@@ -1,7 +1,6 @@
 ---
 title: The easiest way to get started with Svelte
 description: This'll only take a minute.
-pubdate: 2017-08-07
 author: Rich Harris
 authorURL: https://twitter.com/Rich_Harris
 ---

site/content/blog/2017-09-06-the-zen-of-just-writing-css.md

@@ -1,7 +1,6 @@
 ---
 title: The zen of Just Writing CSS
 description: I would say this is the future, but we're already doing it.
-pubdate: 2017-09-06
 author: Rich Harris
 authorURL: https://twitter.com/Rich_Harris
 ---

site/content/blog/2017-12-31-sapper-towards-the-ideal-web-app-framework.md

@@ -1,7 +1,6 @@
 ---
 title: Sapper: Towards the ideal web app framework
 description: Taking the next-plus-one step
-pubdate: 2017-12-31
 author: Rich Harris
 authorURL: https://twitter.com/Rich_Harris
 ---

site/content/blog/2018-04-18-version-2.md

@@ -1,7 +1,6 @@
 ---
 title: Svelte v2 is out!
 description: Here's what you need to know
-pubdate: 2018-04-18
 author: Rich Harris
 authorURL: https://twitter.com/Rich_Harris
 ---

site/content/blog/2018-12-26-svelte-css-in-js.md

@@ -1,7 +1,6 @@
 ---
 title: Using CSS-in-JS with Svelte
 description: You don't need to, but you can
-pubdate: 2018-12-26
 author: Rich Harris
 authorURL: https://twitter.com/Rich_Harris
 ---

site/content/blog/2018-12-27-virtual-dom-is-pure-overhead.md

@@ -1,7 +1,6 @@
 ---
 title: Virtual DOM is pure overhead
 description: Let's retire the 'virtual DOM is fast' myth once and for all
-pubdate: 2018-12-27
 author: Rich Harris
 authorURL: https://twitter.com/Rich_Harris
 ---

site/content/blog/2019-01-31-svelte-on-the-changelog.md

@@ -1,7 +1,6 @@
 ---
 title: Svelte on The Changelog
 description: Listen to the interview here
-pubdate: 2019-01-31
 author: Rich Harris
 authorURL: https://twitter.com/Rich_Harris
 ---

site/content/blog/2019-04-16-svelte-for-new-developers.md

@@ -1,9 +1,9 @@
 ---
 title: Svelte for new developers
 description: Never used Node.js or the command line? No problem
-pubdate: 2019-04-16
 author: Rich Harris
 authorURL: https://twitter.com/Rich_Harris
+draft: true
 ---
 
 TODO walk through installing Node.js and git and using Terminal.app (or whatever the Windows equivalent is) to clone a project template and start developing

site/src/routes/blog/_posts.js

@@ -5,17 +5,23 @@ import marked from 'marked';
 import PrismJS from 'prismjs';
 import 'prismjs/components/prism-bash';
 
-export default function() {
+export default function get_posts() {
 	return fs
 		.readdirSync('content/blog')
 		.map(file => {
 			if (path.extname(file) !== '.md') return;
 
+			const match = /^(\d+-\d+-\d+)-(.+)\.md$/.exec(file);
+			if (!match) throw new Error(`Invalid filename '${file}'`);
+
+			const [, pubdate, slug] = match;
+
 			const markdown = fs.readFileSync(`content/blog/${file}`, 'utf-8');
 
 			const { content, metadata } = extract_frontmatter(markdown);
 
-			const date = new Date(`${metadata.pubdate} EDT`); // cheeky hack
+			const date = new Date(`${pubdate} EDT`); // cheeky hack
+			metadata.pubdate = pubdate;
 			metadata.dateString = date.toDateString();
 
 			const renderer = new marked.Renderer();
@@ -41,7 +47,7 @@ export default function() {
 			return {
 				html,
 				metadata,
-				slug: file.replace(/^[\d-]+/, '').replace(/\.md$/, ''),
+				slug
 			};
 		})
 		.sort((a, b) => a.metadata.pubdate < b.metadata.pubdate ? 1 : -1);

site/src/routes/blog/index.json.js

@@ -4,12 +4,16 @@ let json;
 
 export function get(req, res) {
 	if (!json || process.env.NODE_ENV !== 'production') {
-		json = JSON.stringify(get_posts().map(post => {
-			return {
-				slug: post.slug,
-				metadata: post.metadata
-			};
-		}));
+		const posts = get_posts()
+			.filter(post => !post.metadata.draft)
+			.map(post => {
+				return {
+					slug: post.slug,
+					metadata: post.metadata
+				};
+			});
+
+		json = JSON.stringify(posts);
 	}
 
 	res.set({