Function isPureBodyAtRule

lib/css/CssParser.js:574–578

(name)

 * @returns {boolean} true for `@keyframes` / `@counter-style` / `@container` / `@scope`
 */
const isPureBodyAtRule = (name) =>
	OPTIONALLY_VENDOR_PREFIXED_KEYFRAMES_AT_RULE.test(name) ||
	name === "@counter-style" ||
	name === "@container" ||
	name === "@scope";

/**
 * Scan a rule body once: does it hold a direct declaration counted against the enclosing rule (a declaration, or one in a transparent conditional-group at-rule like `@media`/`@supports`/…) and does it hold a nested block (qualified rule or any block-bearing at-rule)?