import { OpaqueValue, TargetMetadata, TargetValueBuffer } from "../abi/metadata.js";
export declare class TargetOpaqueExistentialContainer {
    #private;
    readonly handle: NativePointer;
    private numWitnessTables;
    static readonly INITIAL_SIZE: number;
    static readonly OFFSETOF: {
        buffer: number;
        type: number;
        wintessTable: number;
    };
    private constructor();
    static alloc(numWitnessTables: number): TargetOpaqueExistentialContainer;
    static makeFromRaw(handle: NativePointer, numWitnessTables: number): TargetOpaqueExistentialContainer;
    set type(metadata: TargetMetadata);
    get buffer(): TargetValueBuffer;
    get type(): TargetMetadata;
    getWitnessTables(): NativePointer;
    isValueInline(): boolean;
    projectValue(): OpaqueValue;
    get sizeof(): number;
}
export declare class ClassExistentialContainer {
    #private;
    readonly handle: NativePointer;
    private numWitnessTables;
    static readonly INITIAL_SIZE: number;
    static readonly OFFSETOF: {
        value: number;
        witnessTables: number;
    };
    constructor(handle: NativePointer, numWitnessTables: number);
    static alloc(numWitnessTables: number): ClassExistentialContainer;
    static makeFromRaw(handle: NativePointer, numWitnessTables: number): ClassExistentialContainer;
    get value(): NativePointer;
    set value(newValue: NativePointer);
    getWitnessTables(): NativePointer;
    get sizeof(): number;
}