Merge pull request #16451 from linbingquan/dev-ts

TypeScript for Interpolations.js

src/extras/core/Interpolations.d.ts

@@ -0,0 +1,5 @@
+export namespace Interpolations {
+	export function CatmullRom(t: number, p0: number, p1: number, p2: number, p3: number): number;
+	export function QuadraticBezier(t: number, p0: number, p1: number, p2: number): number;
+	export function CubicBezier(t: number, p0: number, p1: number, p2: number, p3: number): number;
+}