Function parseADeclaration

lib/css/syntax.js:2149–2157

(input, pos, comment)

 * @returns {Declaration | undefined} the parsed declaration, or undefined
 */
const parseADeclaration = (input, pos, comment) => {
	// 1. Normalize input, and set input to the result.
	const ts = normalizeIntoTokenStream(input, pos, comment);
	useObjectBackend(ts.locConverter);
	// 2. Discard whitespace from input.
	while (ts.next().type === TT_WHITESPACE) ts.discard();
	// 3. Consume a declaration from input. If anything was returned, return it. Otherwise, return a syntax error.
	return consumeADeclaration(ts);
};

/**
 * Parse a component value, CSS Syntax Level 3 [§5.3.9](https://drafts.csswg.org/css-syntax/#parse-component-value) — strict entry point that consumes one value and returns `undefined` if non-whitespace input trails (use `consumeAComponentValue` for "one value, ignore the rest").