/**
 * Type Guard Utilities
 *
 * Centralized type assertion and guard functions for runtime validation.
 * These utilities replace duplicated inline type checks across the codebase.
 */
/**
 * Assert that a value is a non-null, non-empty string
 * @throws Error if value is not a valid string
 */
export declare function assertString(value: unknown, name: string): asserts value is string;
/**
 * Assert that a value is an array
 * @throws Error if value is not an array
 */
export declare function assertArray<T>(value: unknown, name: string): asserts value is T[];
/**
 * Assert that a value is a non-empty array
 * @throws Error if value is not a non-empty array
 */
export declare function assertNonEmptyArray<T>(value: unknown, name: string): asserts value is T[];
/**
 * Assert that a value is a non-null object (not null, not array)
 * @throws Error if value is not a valid object
 */
export declare function assertObject(value: unknown, name: string): asserts value is Record<string, unknown>;
/**
 * Assert that a value is defined (not null or undefined)
 * @throws Error if value is null or undefined
 */
export declare function assertDefined<T>(value: null | T | undefined, name: string): asserts value is T;
/**
 * Type guard: Check if value is a non-empty string
 */
export declare function isNonEmptyString(value: unknown): value is string;
/**
 * Type guard: Check if value is a non-null, non-array object
 */
export declare function isObject(value: unknown): value is Record<string, unknown>;
/**
 * Type guard: Check if value is a non-empty object
 */
export declare function isNonEmptyObject(value: unknown): value is Record<string, unknown>;
/**
 * Type guard: Check if value is a valid number (not NaN, not Infinity)
 */
export declare function isValidNumber(value: unknown): value is number;
/**
 * Type guard: Check if value is a non-empty array
 */
export declare function isNonEmptyArray<T>(value: unknown): value is T[];
/**
 * Assert that a string value matches a required pattern
 * Combines string assertion with optional pattern validation
 * @throws Error if value is not a valid string or doesn't match pattern
 */
export declare function assertStringWithPattern(value: unknown, name: string, pattern?: RegExp, patternDescription?: string): asserts value is string;
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