How to use the richtypo.rich function in richtypo

const richtypo = require('richtypo');

// eslint-disable-next-line no-console
const print = t => console.log(t.replace(/\xa0/g, ' ')); // Make non-breaking spaces visible

richtypo.lang('en');

print(
	richtypo.rich(
		'Welcome to the world of beautiful web typography — only with Richtypo.'
	)
);
print(richtypo.title('Beautiful & Awesome Web Typography with “Richtypo”'));
print(
	richtypo.full('Use "Richtypo" - make typography on your site beautiful.')
);

const richtypo = require("richtypo");

// eslint-disable-next-line no-console
const print = t => console.log(t.replace(/\xa0/g, " ")); // Make non-breaking spaces visible

richtypo.lang("en");

print(
  richtypo.rich(
    "Welcome to the world of beautiful web typography — only with Richtypo."
  )
);
print(richtypo.title("Beautiful & Awesome Web Typography with “Richtypo”"));
print(
  richtypo.full('Use "Richtypo" - make typography on your site beautiful.')
);

dataset.map = sitemap;
		dataset.files = versions;
		dataset.javascripts = javascripts;
		dataset.debug = isDebug;
		for (var key in commons) {
			dataset[key] = commons[key];
		}

		// Typography
		richtypo.lang(dataset.lang);
		dataset.pageTitle = dataset.title;
		if (o.typographer !== false) {
			if (dataset.title)
				dataset.title = richtypo.title(dataset.title);
			if (dataset.content)
				dataset.content = richtypo.rich(dataset.content);
		}

		// Expose typographer to templates
		dataset.t = richtypo.rich;
		dataset.tt = richtypo.title;
		dataset.tl = richtypo.lite;

		// Expose Markdown parser to templates
		dataset.md = marked;
		dataset.mds = markedString;

		transform(dataset.template, fileId, dataset, saveContentFile);
	}
}

// Special data
			dataset.map = this.sitemap;
			dataset.files = this.versions;
			dataset.debug = this.debug;
			for (var key in commons) {
				dataset[key] = commons[key];
			}

			// Typography
			richtypo.lang(dataset.lang);
			dataset.pageTitle = dataset.title;
			if (this.typographer !== false) {
				if (dataset.title)
					dataset.title = richtypo.title(dataset.title);
				if (dataset.content)
					dataset.content = richtypo.rich(dataset.content);
			}

			// Expose typographer to templates
			dataset.t = richtypo.rich;
			dataset.tt = richtypo.title;
			dataset.tl = richtypo.lite;

			// Expose Markdown parser to templates
			dataset.md = marked;
			dataset.mds = markedString;

			this.transform(dataset.template, fileId, dataset, this.saveContentFile.bind(this));
		}
	},

export function typo(string) {
	return (
		string && vdo.markSafe(richtypo.rich(string.toString(), this.pageLang()))
	);
}