# src / mixin / constants.js
Copyright (c) 2018 Florian Klampfer <https://qwtel.com/>

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The base duration of the fling animation.


```js
export const BASE_DURATION = 200;
```

We adjust the duration of the animation using the width of the drawer.
There is no physics to this, but we know from testing that the animation starts to feel bad
when the drawer increases in size.
From testing we know that, if we increase the duration as a fraction of the drawer width,
the animation stays smooth across common display sizes.


```js
export const WIDTH_CONTRIBUTION = 0.15;
```

Minimum velocity of the drawer (in px/ms) when releasing to make it fling to opened/closed state.


```js
export const VELOCITY_THRESHOLD = 0.15;
```