Method render

src/tenso.js:302–329

* Renders the response based on the accepted content type * @param {Object} req - Request object * @param {Object} res - Response object * @param {*} arg - Data to be rendered * @returns {*} The rendered response

(req, res, arg)

	 * @returns {*} The rendered response
	 */
	render (req, res, arg) {
		if (arg === null) {
			arg = NULL;
		}

		const accepts = (req.parsed.searchParams.get(FORMAT) || req.headers.accept || res.getHeader(HEADER_CONTENT_TYPE)).split(COMMA);
		let format = EMPTY,
			renderer, result;

		for (const media of accepts) {
			const lmimetype = media.replace(mimetype, EMPTY);

			if (this.renderers.has(lmimetype)) {
				format = lmimetype;
				break;
			}
		}

		if (format.length === INT_0) {
			format = this.mimeType;
		}

		renderer = this.renderers.get(format);
		res.header(HEADER_CONTENT_TYPE, format);
		result = renderer(req, res, arg, this.webroot.template);

		return result;
	}

	/**
	 * Registers a renderer for a specific media type