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node-course/node_modules/ccount/index.d.ts

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+/**
+ * Count how often a character (or substring) is used in a string.
+ *
+ * @param {string} value
+ *   Value to search in.
+ * @param {string} character
+ *   Character (or substring) to look for.
+ * @return {number}
+ *   Number of times `character` occurred in `value`.
+ */
+export function ccount(value: string, character: string): number