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node_modules/mdast-util-to-markdown/lib/util/check-rule-repetition.js

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+/**
+ * @import {Options, State} from 'mdast-util-to-markdown'
+ */
+
+/**
+ * @param {State} state
+ * @returns {Exclude<Options['ruleRepetition'], null | undefined>}
+ */
+export function checkRuleRepetition(state) {
+  const repetition = state.options.ruleRepetition || 3
+
+  if (repetition < 3) {
+    throw new Error(
+      'Cannot serialize rules with repetition `' +
+        repetition +
+        '` for `options.ruleRepetition`, expected `3` or more'
+    )
+  }
+
+  return repetition
+}