import { IConfigurationPropertySchema } from "../../../../platform/configuration/common/configurationRegistry.js";
export declare function createValidator(prop: IConfigurationPropertySchema): (value: any) => (string | null);
/**
 * Returns an error string if the value is invalid and can't be displayed in the settings UI for the given type.
 */
export declare function getInvalidTypeError(value: any, type: undefined | string | string[]): string | undefined;
/**
 * Validates a single property name against the propertyNames.pattern schema.
 * Returns true if the key is valid, false otherwise.
 */
export declare function validatePropertyName(propertyNames: IConfigurationPropertySchema["propertyNames"], key: string): boolean;