hunk.code_window:   mergeDefaultProps,
     getDefaultProps,
     getDefaultProp,
     throwDisposed,
     overrideGet,
   } from './helpers'
   import { FrameValue, isFrameValue } from './FrameValue'
   import {
     SpringPhase,
  
hunk.labels: keep keep keep keep add keep keep keep keep
hunk.after_edit:   isFalsy,
  
hunk.file_path: packages/core/src/SpringValue.ts
hunk.type: add
file: export * from './Spring'
  export * from './Trail'
  export * from './Transition'
  