first commit; migrate code from minimal/docs-server

src/mark.ts

@@ -0,0 +1,31 @@
+
+import { marked } from 'marked';
+import { MarkdownOptions } from './render';
+
+export interface MarkToken extends marked.Tokens.Generic {
+	text: string;
+}
+
+export function mark_ext(renderer: marked.Renderer, opts: MarkdownOptions) : marked.TokenizerExtension & marked.RendererExtension {
+	return {
+		name: 'mark',
+		level: 'inline',
+		start: (src) => src.match(/=/)?.index,
+		tokenizer(src, tokens) {
+			const rule = /^==([^\n\s](?:(?:[^\n=]|=(?!=))*[^\n\s])?)==/;
+			const match = rule.exec(src);
+
+			if (match) {
+				return {
+					type: 'mark',
+					raw: match[0],
+					text: match[1],
+					tokens: this.lexer.inlineTokens(match[1], [ ])
+				};
+			}
+		},
+		renderer(token: MarkToken) {
+			return `<mark>${this.parser.parseInline(token.tokens, renderer)}</mark>`;
+		}
+	};
+}