And then in the .d.ts file, you can declare math as a module instead of a class. ```ts declare module "math" { type float2 = import("Unity/Mathematics").float2 type float3 = import("Unity/Mathematics").float3 type float4 = import("Unity/Mathematics").float4 export const PI export function float2(x: number): float2 export function float2(x: number, y: number): float2 export function float3(x: number): float3 export function float3(x: number, y: number, z: number): float3 export function float4(x: number): float4 export function float4(x: number, y: number, z: number, w: number): float4 export function clamp(v: float, a: float, b: float): float ... } ```