/*** Primitive field rules for portable Infra configuration, shared by its exact-shape validators. */
export declare const infraFields: {
    optionalText: (value: unknown) => boolean;
    strings: (value: unknown) => boolean;
    optionalStrings: (value: unknown) => boolean;
    positiveInteger: (value: unknown) => boolean;
    nonnegativeInteger: (value: unknown) => boolean;
    optionalPositiveInteger: (value: unknown) => boolean;
    optionalNonnegativeInteger: (value: unknown) => boolean;
    port: (value: unknown) => boolean;
    optionalPort: (value: unknown) => boolean;
};
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