first commit; migrate code from minimal/docs-server

src/section.ts

@@ -0,0 +1,37 @@
+
+import { marked } from 'marked';
+import { ParsedAttributes, parse_attributes } from './attrs';
+import { MarkdownOptions } from './render';
+
+export interface SectionToken extends marked.Tokens.Generic {
+	text: string;
+	attrs: ParsedAttributes;
+}
+
+export function section_ext(renderer: marked.Renderer, opts: MarkdownOptions) : marked.TokenizerExtension & marked.RendererExtension {
+	return {
+		name: 'section',
+		level: 'block',
+		start: (src) => src.match(/^!!!/)?.index,
+		tokenizer(src, tokens) {
+			const rule = /^!!!(!*)([^\n]+)?(?:\n)((?:[^!]|!!?(?!!\1))+)!!!\1/;
+			const match = rule.exec(src);
+
+			if (match) {
+				const token: SectionToken = {
+					type: 'section',
+					raw: match[0],
+					text: match[3],
+					attrs: parse_attributes(match[2] || ''),
+					tokens: [ ],
+				};
+
+				this.lexer.blockTokens(match[3], token.tokens);
+				return token;
+			}
+		},
+		renderer(token: SectionToken) {
+			return `<section ${token.attrs.html_attrs.join(' ')}>${this.parser.parse(token.tokens)}</section>`;
+		}
+	};
+}