Simple DiceRoller buttons via `<<dice spec>>` inside an ObsidianMD note. Requires Dice Roller and CustomJS plugins to work. Extendable for more `<<tag>>` types.

tools.js

class Tools {
	static Macros = {
		dice(code) {
			code = String(code);
			var b = createEl("button");
			b.replaceChildren(code);
			b.addEventListener("click", () => {
				app.commands.executeCommandById("obsidian-dice-roller:open-view");
				app.plugins.getPlugin("obsidian-dice-roller")?.view.roll(code)
			});
			return b;
		}
	};

	constructor() {
		var tool = this;
		class ProcessPlugin extends obsidian.Plugin {
			constructor() {
				super();
				this.registerMarkdownPostProcessor((element, context) => {
					tool.inject(element);
				});
			}
		};
		new ProcessPlugin();
		this.inject(app?.workspace?.activeLeaf?.containerEl);
	}

	inject(element) {
		var macro = new RegExp('<<(?<name>[A-Za-z][\\w-]*)\\s+(?<arg>\\S.*?)>>', 'gm');
		if(!element) {
			return;
		}
		var textNodes = [];
		try {
			var walker = document.createTreeWalker(element, NodeFilter.SHOW_TEXT, null, false);
		} catch(e) {
			console.log(e);
			return;
		}
		var node;
		/* filter out relevant nodes */
		while(node = walker.nextNode()) {
			macro.lastIndex = 0;
			if(macro.exec(node.nodeValue)) {
				textNodes.push(node);
			}
		}
		for(node of textNodes) {
			macro.lastIndex = 0;
			var search;
			var res = [];
			var lastIndex = 0;
			while(search = macro.exec(node.nodeValue)) {
				if(search.index > lastIndex) {
					res.push(document.createTextNode(node.nodeValue.substring(lastIndex, search.index)));
				}
				if(def.Macros[search.groups.name]) {
					var el = def.Macros[search.groups.name](search.groups.arg);
					res.push(el);
				} else {
					res.push(document.createTextNode(search[0]));
				}
				lastIndex = search.index + search[0].length;
			}
			res.push(document.createTextNode(node.nodeValue.substring(lastIndex)));
			var n;
			for(n of res) {
				node.parentNode.insertBefore(n, node);
			}
			node.parentNode.removeChild(node);
		}
	}
}