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node_modules/stylelint/lib/rules/keyframe-declaration-no-important/index.mjs

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+import { assert } from '../../utils/validateTypes.mjs';
+import getImportantPosition from '../../utils/getImportantPosition.mjs';
+import report from '../../utils/report.mjs';
+import ruleMessages from '../../utils/ruleMessages.mjs';
+import validateOptions from '../../utils/validateOptions.mjs';
+
+const ruleName = 'keyframe-declaration-no-important';
+
+const messages = ruleMessages(ruleName, {
+	rejected: 'Unexpected !important',
+});
+
+const meta = {
+	url: 'https://stylelint.io/user-guide/rules/keyframe-declaration-no-important',
+};
+
+/** @type {import('stylelint').CoreRules[ruleName]} */
+const rule = (primary) => {
+	return (root, result) => {
+		const validOptions = validateOptions(result, ruleName, { actual: primary });
+
+		if (!validOptions) {
+			return;
+		}
+
+		root.walkAtRules(/^(-(o|moz|ms|webkit)-)?keyframes$/i, (atRuleKeyframes) => {
+			atRuleKeyframes.walkDecls((decl) => {
+				if (!decl.important) {
+					return;
+				}
+
+				const pos = getImportantPosition(decl.toString());
+
+				assert(pos);
+
+				report({
+					message: messages.rejected,
+					node: decl,
+					index: pos.index,
+					endIndex: pos.endIndex,
+					result,
+					ruleName,
+				});
+			});
+		});
+	};
+};
+
+rule.ruleName = ruleName;
+rule.messages = messages;
+rule.meta = meta;
+export default rule;