Function validateNumericReference

lib/html/syntax.js:435–467

(endPos)

	 * @param {number} endPos offset just past the reference
	 */
	const validateNumericReference = (endPos) => {
		if (charRefCode === 0) {
			reportError("null-character-reference", charRefStart, endPos, "warning");
		} else if (charRefCode > 0x10ffff) {
			reportError(
				"character-reference-outside-unicode-range",
				charRefStart,
				endPos,
				"warning"
			);
		} else if (charRefCode >= 0xd800 && charRefCode <= 0xdfff) {
			reportError(
				"surrogate-character-reference",
				charRefStart,
				endPos,
				"warning"
			);
		} else if (isNoncharacter(charRefCode)) {
			reportError(
				"noncharacter-character-reference",
				charRefStart,
				endPos,
				"warning"
			);
		} else if (isControlReference(charRefCode)) {
			reportError(
				"control-character-reference",
				charRefStart,
				endPos,
				"warning"
			);
		}
	};

	// Content mode for the tag just opened (name at `lastOpenTagStart..End`). In
	// foreign content (SVG/MathML) the tree builder vetoes RAWTEXT/RCDATA/script