more cleaning up

src/utils/math.test.ts

@@ -1,8 +1,6 @@
 import { describe, expect, it } from 'vitest';
 
 import { clamp, clamp01 } from './clamp';
-import { exponentialDecay } from './exponential-decay';
-import { mix } from './mix';
 
 describe('clamp', () => {
   it('returns value when within bounds', () => {
@@ -27,37 +25,3 @@ describe('clamp01', () => {
     expect(clamp01(2)).toBe(1);
   });
 });
-
-describe('mix', () => {
-  it('returns from at q=0', () => {
-    expect(mix(10, 20, 0)).toBe(10);
-  });
-  it('returns to at q=1', () => {
-    expect(mix(10, 20, 1)).toBe(20);
-  });
-  it('interpolates at q=0.5', () => {
-    expect(mix(10, 20, 0.5)).toBe(15);
-  });
-  it('extrapolates outside [0, 1]', () => {
-    expect(mix(0, 10, 2)).toBe(20);
-    expect(mix(0, 10, -1)).toBe(-10);
-  });
-});
-
-describe('exponentialDecay', () => {
-  it('returns nextValue when bias is 1', () => {
-    expect(exponentialDecay({ accumulator: 0, nextValue: 10, biasOfNextValue: 1 })).toBe(
-      10
-    );
-  });
-  it('returns accumulator when bias is 0', () => {
-    expect(exponentialDecay({ accumulator: 5, nextValue: 10, biasOfNextValue: 0 })).toBe(
-      5
-    );
-  });
-  it('blends with given bias', () => {
-    expect(
-      exponentialDecay({ accumulator: 0, nextValue: 10, biasOfNextValue: 0.25 })
-    ).toBe(2.5);
-  });
-});