| 1 | import { Callback } from './utils';
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| 2 | /** Determines whether the argument is a non-empty string. */
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| 3 | export declare function isNonEmptyString(data: unknown): boolean;
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| 4 | /** Determines whether the argument is a *valid* Date. */
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| 5 | export declare function isDate(data: unknown): boolean;
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| 6 | /** Determines whether the argument is the empty string. */
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| 7 | export declare function isEmptyString(data: unknown): boolean;
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| 8 | /** Determines whether the argument is a string. */
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| 9 | export declare function isString(data: unknown): boolean;
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| 10 | /** Determines whether the string representation of the argument is "[object Object]". */
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| 11 | export declare function isObject(data: unknown): boolean;
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| 12 | /** Determines whether the argument is an integer. */
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| 13 | export declare function isInteger(data: unknown): boolean;
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| 14 | /**
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| 15 | * When the first argument is false, an error is created with the given message. If a callback is
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| 16 | * provided, the error is passed to the callback, otherwise the error is thrown.
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| 17 | */
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| 18 | export declare function validate(bool: boolean, cbOrMessage?: Callback<never> | string, message?: string): void;
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| 19 | /**
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| 20 | * Represents a validation error.
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| 21 | * @public
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| 22 | */
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| 23 | export declare class ParameterError extends Error {
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| 24 | }
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