message: refactor(base.ts): remove useless types
diff: @@ -2,7 +2,7 @@ import {
  EaseFn,
  safeCSSStyleDeclaration,
  cancelAnimationFrame,
  - EventEmitter
  + EventEmitter,
  } from '@better-scroll/shared-utils'
  import Translater, { TranslaterPoint } from '../translater'
  @@ -33,7 +33,7 @@ export default abstract class Base implements ExposedAPI {
  'forceStop',
  'callStop',
  'time',
  - 'timeFunction'
  + 'timeFunction',
  ])
  this.style = content.style as safeCSSStyleDeclaration
  }
  @@ -54,8 +54,7 @@ export default abstract class Base implements ExposedAPI {
  startPoint: TranslaterPoint,
  endPoint: TranslaterPoint,
  time: number,
  - easing: string | EaseFn,
  - isSilent?: boolean
  + easing: string | EaseFn
  ): void
  abstract doStop(): void
  