export interface PackedHeatContours {
    readonly buffer: ArrayBuffer;
    readonly cols: number;
    readonly rows: number;
    readonly levels: Float32Array;
    readonly lineOffsets: Uint32Array;
    readonly lineLevels: Uint32Array;
    readonly xy: Float32Array;
    readonly lineCount: number;
    readonly vertexCount: number;
}
export interface HeatContoursWasmProfile {
    supported?: boolean;
    stableSnapshot?: boolean;
    gridBytes?: number;
    levelsBytes?: number;
    scratchBytes?: number;
    outputBytes?: number;
    segments?: number;
    lines?: number;
    vertices?: number;
    wasmMemoryBytes?: number;
    moduleLoadMs?: number;
    memoryGrowMs?: number;
    inputCopyMs?: number;
    countMs?: number;
    buildMs?: number;
    snapshotMs?: number;
    viewsMs?: number;
    totalMs?: number;
}
export declare function heatContoursWasmSupported(): boolean;
export declare function heatContoursWasmError(): string;
/** Stable result: scalar grid + thresholds -> WASM marching/stitching -> one snapshot blob. */
export declare function buildHeatContoursWasm(grid: Float32Array, cols: number, rows: number, levels: Float32Array | number[], profile?: HeatContoursWasmProfile): PackedHeatContours | null;
/** Benchmark-only live views. Invalid after next call or WebAssembly.Memory.grow(). */
export declare function buildHeatContoursWasmUnsafe(grid: Float32Array, cols: number, rows: number, levels: Float32Array | number[], profile?: HeatContoursWasmProfile): PackedHeatContours | null;
export declare function decodeHeatContoursWasmBlob(buffer: ArrayBuffer): PackedHeatContours | null;
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