/// <amd-module name="nova_ecs/datatypes/angle" />
import { immerable } from 'immer';
import * as t from 'io-ts';
import { Vector } from './vector';
export declare const AngleLike: t.TypeC<{
    angle: t.NumberC;
}>;
export declare const AngleType: t.Type<Angle, {
    angle: number;
}, unknown>;
export declare type AngleLike = t.TypeOf<typeof AngleLike>;
export declare class Angle implements AngleLike {
    [immerable]: boolean;
    readonly angle: number;
    constructor(angle: number);
    static fromAngleLike(angleLike: AngleLike): Angle;
    private static mod;
    add(other: Angle | number): Angle;
    subtract(other: Angle | number): Angle;
    static minus(a: AngleLike, b: AngleLike): Angle;
    distanceTo(other: Angle): Angle;
    getUnitVector(): Vector;
}