wip: various improvements

src/animated/AnimatedInterpolation.ts

@@ -43,6 +43,6 @@ export default class AnimatedInterpolation extends AnimatedArray<Animated>
     range: number[] | InterpolationConfig | ((...args: any[]) => IpValue),
     output?: (number | string)[]
   ): AnimatedInterpolation {
-    return new AnimatedInterpolation(this, range as number[], output!)
+    return new AnimatedInterpolation(this, range as number[], output)
   }
 }

src/animated/AnimatedValue.ts

@@ -3,6 +3,7 @@ import { InterpolationConfig } from '../types/interpolation'
 import Animated from './Animated'
 import AnimatedInterpolation from './AnimatedInterpolation'
 import AnimatedProps from './AnimatedProps'
+import { now } from './Globals'
 
 /**
  * Animated works by building a directed acyclic graph of dependencies
@@ -82,4 +83,14 @@ export default class AnimatedValue extends Animated implements SpringValue {
   ): AnimatedInterpolation {
     return new AnimatedInterpolation(this, range as number[], output!)
   }
+
+  public reset(isActive: boolean) {
+    this.startPosition = this.value
+    this.lastPosition = this.value
+    this.lastVelocity = isActive ? this.lastVelocity : undefined
+    this.lastTime = isActive ? this.lastTime : undefined
+    this.startTime = now()
+    this.done = false
+    this.animatedStyles.clear()
+  }
 }

src/animated/AnimatedValueArray.ts

@@ -6,9 +6,9 @@ import AnimatedValue from './AnimatedValue'
 
 export default class AnimatedValueArray extends AnimatedArray<AnimatedValue>
   implements SpringValue {
-  constructor(values: (string | number)[]) {
+  constructor(values: AnimatedValue[]) {
     super()
-    this.payload = values.map(n => new AnimatedValue(n))
+    this.payload = values
   }
 
   public setValue(value: (string | number)[] | string | number, flush = true) {
@@ -29,6 +29,6 @@ export default class AnimatedValueArray extends AnimatedArray<AnimatedValue>
     range: number[] | InterpolationConfig | ((...args: any[]) => any),
     output?: (number | string)[]
   ): AnimatedInterpolation {
-    return new AnimatedInterpolation(this, range as number[], output!)
+    return new AnimatedInterpolation(this, range as number[], output)
   }
 }