export declare class Vector2 {
    x: number;
    y: number;
    constructor(x?: number, y?: number);
    static fromArray(arr: number[]): Vector2;
    toArray(): [number, number];
    add(other: Vector2): Vector2;
    subtract(other: Vector2): Vector2;
    multiply(scalar: number): Vector2;
    length(): number;
    normalize(): Vector2;
    distance(other: Vector2): number;
}
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