initial commit

utils/create_matchers.js

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+const path = require('path');
+
+module.exports = function create_matchers(files) {
+	return files
+		.map(file => {
+			const parts = file.replace(/\.(html|js|mjs)$/, '').split(path.sep);
+			if (parts[parts.length - 1] === 'index') parts.pop();
+
+			const dynamic = parts
+				.filter(part => part[0] === '%')
+				.map(part => part.slice(1, -1));
+
+			const pattern = new RegExp(
+				`^\\/${parts.map(p => p[0] === '%' ? '([^/]+)' : p).join('\\/')}$`
+			);
+
+			const test = url => pattern.test(url);
+
+			const exec = url => {
+				const match = pattern.exec(url);
+				if (!match) return;
+
+				const params = {};
+				dynamic.forEach((param, i) => {
+					params[param] = match[i + 1];
+				});
+
+				return params;
+			};
+
+			return {
+				file,
+				test,
+				exec,
+				parts,
+				dynamic
+			};
+		})
+		.sort((a, b) => {
+			return (
+				(a.dynamic.length - b.dynamic.length) || // match static paths first
+				(b.parts.length - a.parts.length) // match longer paths first
+			);
+		})
+		.map(matcher => {
+			return {
+				file: matcher.file,
+				test: matcher.test,
+				exec: matcher.exec
+			}
+		});
+}

utils/create_matchers.test.js

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+const path = require('path');
+const assert = require('assert');
+
+const create_matchers = require('./create_matchers.js');
+
+describe('create_matchers', () => {
+	it('sorts routes correctly', () => {
+		const matchers = create_matchers(['index.html', 'about.html', '%wildcard%.html', 'post/%id%.html']);
+
+		assert.deepEqual(
+			matchers.map(m => m.file),
+			[
+				'about.html',
+				'index.html',
+				'post/%id%.html',
+				'%wildcard%.html'
+			]
+		);
+	});
+
+	it('generates params', () => {
+		const matchers = create_matchers(['index.html', 'about.html', '%wildcard%.html', 'post/%id%.html']);
+
+		let file;
+		let params;
+		for (let i = 0; i < matchers.length; i += 1) {
+			const matcher = matchers[i];
+			if (params = matcher.exec('/post/123')) {
+				file = matcher.file;
+				break;
+			}
+		}
+
+		assert.equal(file, 'post/%id%.html');
+		assert.deepEqual(params, {
+			id: '123'
+		});
+	});
+});