import type { JsonValue } from "../../core/types.js";
import type { HsonCanonical } from "../transform/transform.types.js";
/**
 * One immutable exact canonical Hson data value.
 *
 * HsonData is data-only: it never represents Hson document structure. Object
 * member order and signed zero are part of its semantic identity.
 */
export declare class HsonData {
    private readonly hsonDataNominal;
    private constructor();
    /** Strictly admit ordinary JavaScript data, or retain an existing exact value. */
    static from(input: unknown): HsonData;
    /** Parse canonical authored Hson and require its complete semantic value to be data. */
    static fromHson(input: HsonCanonical): HsonData;
    /** Exact semantic kind. */
    get kind(): "string" | "number" | "boolean" | "null" | "array" | "object";
    /** Read a scalar value, or undefined for a container. */
    scalar(): string | number | boolean | null | undefined;
    /** Read exact array items, or undefined when this value is not an array. */
    items(): readonly HsonData[] | undefined;
    /** Read exact ordered object entries, or undefined when this value is not an object. */
    entries(): readonly (readonly [string, HsonData])[] | undefined;
    /** Materialize a fresh ordinary-JavaScript convenience view. */
    materialize(): JsonValue;
    /** Serialize this exact data value through the canonical Hson serializer. */
    toHson(): HsonCanonical;
    /** Exact canonical data equality. */
    equals(other: HsonData): boolean;
}
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