import { DeviceValueReader, InputState, MouseValueReaderDefinition } from "../../../interfaces/input.d.ts";
/**
 * Types of mouse input sources
 */
export type MouseSourceType = 'button' | 'position' | 'wheel';
/**
 * Reads values from mouse input states
 */
export declare class MouseValueReader implements DeviceValueReader {
    /**
     * Which category of mouse input: button press, cursor position, or scroll wheel.
     */
    readonly sourceType: MouseSourceType;
    /**
     * Identifies the input within the source type (e.g. "button-0", "absolute:x", "deltaY")
     */
    readonly sourceKey: string;
    /**
     * Creates a new MouseValueReader
     *
     * @param sourceType
     * @param sourceKey - e.g. "button-0", "absolute:x", "deltaY"
     */
    constructor(sourceType: MouseSourceType, sourceKey: string);
    /**
     * Gets the value of the mouse input source. Returns undefined for non-mouse input states.
     *
     * @param state
     */
    getValue(state: InputState): boolean | number | undefined;
    /**
     * Creates a MouseValueReader from a colon-delimited string (e.g. "button:0", "position:absolute:x")
     *
     * @param sourceTypeString
     */
    static fromString(sourceTypeString: string): MouseValueReader;
    /**
     * Returns a JSON-serializable representation of this mouse value reader.
     */
    toJSON(): MouseValueReaderDefinition;
}