Method handleValueAtRule

lib/css/CssParser.js:2819–2926

(at)

		 * @param {AtRule} at the `@value` at-rule
		 */
		const handleValueAtRule = (at) => {
			const start = A.start(at);
			const nameEnd = A.nameEnd(at);
			const semi = A.end(at);
			const atRuleEnd =
				source.charCodeAt(semi) === CC_SEMICOLON ? semi + 1 : semi;
			const params = input.slice(nameEnd, semi);
			const parsed = parseValueAtRuleParams(params);

			if (
				typeof (/** @type {ValueAtRuleImport} */ (parsed).from) !== "undefined"
			) {
				if (/** @type {ValueAtRuleImport} */ (parsed).from.length === 0) {
					this._emitWarning(
						state,
						`Broken '@value' at-rule: ${input.slice(start, atRuleEnd)}'`,
						locConverter,
						start,
						atRuleEnd
					);

					const dep = new ConstDependency("", [start, atRuleEnd]);
					module.addPresentationalDependency(dep);
					return;
				}

				let { from, items } = /** @type {ValueAtRuleImport} */ (parsed);

				for (const { importName, localName } of items) {
					{
						const reexport = icssDefinitions.get(from);

						if (reexport && reexport.value) {
							from = reexport.value.slice(1, -1);
						}

						const dep = new CssIcssImportDependency(
							from,
							[0, 0],
							/** @type {"local" | "global"} */
							(mode),
							importName,
							localName
						);
						setDepLoc(dep, start, nameEnd);
						module.addDependency(dep);

						icssDefinitions.set(localName, {
							importName,
							request: from
						});
					}

					{
						const { line: sl, column: sc } = locConverter.get(start);
						const { line: el, column: ec } = locConverter.get(nameEnd);
						addCssExport(
							sl,