import { Seconds } from "../type/Units.js";
import { Emitter } from "../util/Emitter.js";
import { AnyAudioContext } from "./AudioContext.js";
import type { DrawClass as Draw } from "../util/Draw.js";
import type { DestinationClass as Destination } from "./Destination.js";
import type { TransportClass as Transport } from "../clock/Transport.js";
import type { ListenerClass as Listener } from "./Listener.js";
export type ExcludedFromBaseAudioContext = "onstatechange" | "addEventListener" | "removeEventListener" | "listener" | "dispatchEvent" | "audioWorklet" | "destination" | "createScriptProcessor";
export type BaseAudioContextSubset = Omit<BaseAudioContext, ExcludedFromBaseAudioContext>;
export type ContextLatencyHint = AudioContextLatencyCategory;
export declare abstract class BaseContext extends Emitter<"statechange" | "tick"> implements BaseAudioContextSubset {
    abstract createAnalyser(): AnalyserNode;
    abstract createOscillator(): OscillatorNode;
    abstract createBufferSource(): AudioBufferSourceNode;
    abstract createBiquadFilter(): BiquadFilterNode;
    abstract createBuffer(_numberOfChannels: number, _length: number, _sampleRate: number): AudioBuffer;
    abstract createChannelMerger(_numberOfInputs?: number | undefined): ChannelMergerNode;
    abstract createChannelSplitter(_numberOfOutputs?: number | undefined): ChannelSplitterNode;
    abstract createConstantSource(): ConstantSourceNode;
    abstract createConvolver(): ConvolverNode;
    abstract createDelay(_maxDelayTime?: number | undefined): DelayNode;
    abstract createDynamicsCompressor(): DynamicsCompressorNode;
    abstract createGain(): GainNode;
    abstract createIIRFilter(_feedForward: number[] | Float32Array, _feedback: number[] | Float32Array): IIRFilterNode;
    abstract createPanner(): PannerNode;
    abstract createPeriodicWave(_real: number[] | Float32Array, _imag: number[] | Float32Array, _constraints?: PeriodicWaveConstraints | undefined): PeriodicWave;
    abstract createStereoPanner(): StereoPannerNode;
    abstract createWaveShaper(): WaveShaperNode;
    abstract createMediaStreamSource(_stream: MediaStream): MediaStreamAudioSourceNode;
    abstract createMediaElementSource(_element: HTMLMediaElement): MediaElementAudioSourceNode;
    abstract createMediaStreamDestination(): MediaStreamAudioDestinationNode;
    abstract decodeAudioData(_audioData: ArrayBuffer): Promise<AudioBuffer>;
    abstract createAudioWorkletNode(_name: string, _options?: Partial<AudioWorkletNodeOptions>): AudioWorkletNode;
    abstract get rawContext(): AnyAudioContext;
    abstract addAudioWorkletModule(_url: string): Promise<void>;
    abstract lookAhead: number;
    abstract latencyHint: ContextLatencyHint | Seconds;
    abstract resume(): Promise<void>;
    abstract setTimeout(_fn: (...args: any[]) => void, _timeout: Seconds): number;
    abstract clearTimeout(_id: number): this;
    abstract setInterval(_fn: (...args: any[]) => void, _interval: Seconds): number;
    abstract clearInterval(_id: number): this;
    abstract getConstant(_val: number): AudioBufferSourceNode;
    abstract get currentTime(): Seconds;
    abstract get state(): AudioContextState;
    abstract get sampleRate(): number;
    abstract get listener(): Listener;
    abstract get transport(): Transport;
    abstract get draw(): Draw;
    abstract get destination(): Destination;
    abstract now(): Seconds;
    abstract immediate(): Seconds;
    toJSON(): Record<string, any>;
    readonly isOffline: boolean;
}