Make sure all helpers are exported (#8688)

Author: kurkle

src/helpers/index.js

@@ -1,16 +1,15 @@
+export * from './helpers.color';
 export * from './helpers.core';
 export * from './helpers.canvas';
 export * from './helpers.collection';
 export * from './helpers.config';
 export * from './helpers.curve';
 export * from './helpers.dom';
 export {default as easingEffects} from './helpers.easing';
+export * from './helpers.extras';
 export * from './helpers.interpolation';
 export * from './helpers.intl';
 export * from './helpers.options';
 export * from './helpers.math';
 export * from './helpers.rtl';
 export * from './helpers.segment';
-
-export {color, getHoverColor} from './helpers.color';
-export {requestAnimFrame, fontString} from './helpers.extras';