/**
 * Check if v is a string
 * @param v
 */
export declare function isString(v: any): boolean;
/**
 * Capitalize a string
 * @param str
 */
export declare function capitalize(str: string): string;
/**
 * CamelCase a string
 * @param str
 */
export declare function camelCase(str: string): string;
/**
 * Stripe html tags from a string
 * @param str
 */
export declare function stripHtml(str: string): string;
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