import { CompilerTarget, NodeImplementation, AudioSettings } from '../compile/types';
import { Signal, Message, FloatArray, Engine } from '../run/types';
import { DspGraph } from '../dsp-graph';
interface NodeTestSettings<NodeArguments> {
    target: CompilerTarget;
    node: DspGraph.Node;
    nodeImplementation: NodeImplementation<NodeArguments>;
    bitDepth: AudioSettings['bitDepth'];
    sampleRate?: number;
    arrays?: {
        [arrayName: string]: Array<number>;
    };
}
type EngineFs = NonNullable<Engine['globals']['fs']>;
type FrameNode = {
    fs?: {
        [FsFuncName in keyof EngineFs]?: Parameters<NonNullable<EngineFs[FsFuncName]>>;
    };
};
export type FrameNodeIn = FrameNode & {
    commons?: {
        getArray?: Array<string>;
        setArray?: {
            [arrayName: string]: Array<number>;
        };
    };
    ins?: {
        [portletId: string]: Array<Message> | Signal;
    };
};
export type FrameNodeOut = FrameNode & {
    commons?: {
        getArray?: {
            [arrayName: string]: Array<number>;
        };
    };
    outs: {
        [portletId: string]: Array<Message> | Signal;
    };
    sequence?: Array<string>;
};
export declare const generateFramesForNode: <NodeArguments>(nodeTestSettings: NodeTestSettings<NodeArguments>, inputFrames: Array<FrameNodeIn>) => Promise<Array<FrameNodeOut>>;
export declare const assertNodeOutput: <NodeArguments>(nodeTestSettings: NodeTestSettings<NodeArguments>, ...frames: Array<[FrameNodeIn, FrameNodeOut]>) => Promise<void>;
export declare const generateFrames: (engine: Engine, iterations?: number, engineInput?: FloatArray[]) => number[][];
/** Helper to round test results even nested in complex objects / arrays. */
export declare const roundNestedFloats: <T extends Object>(obj: T) => T;
export declare const buildEngineBlock: (bitDepth: AudioSettings['bitDepth'], channelCount: number, blockSize: number) => FloatArray[];
export declare const ENGINE_DSP_PARAMS: {
    sampleRate: number;
    channelCount: {
        in: number;
        out: number;
    };
};
export {};