Remove dead utils, move utils used only once

src/view/com/lightbox/ImageViewing/hooks/useImageDimensions.ts

@@ -8,11 +8,29 @@
 
 import {useEffect, useState} from 'react'
 import {Image, ImageURISource} from 'react-native'
-
-import {createCache} from '../utils'
 import {Dimensions, ImageSource} from '../@types'
 
 const CACHE_SIZE = 50
+
+type CacheStorageItem = {key: string; value: any}
+
+const createCache = (cacheSize: number) => ({
+  _storage: [] as CacheStorageItem[],
+  get(key: string): any {
+    const {value} =
+      this._storage.find(({key: storageKey}) => storageKey === key) || {}
+
+    return value
+  },
+  set(key: string, value: any) {
+    if (this._storage.length >= cacheSize) {
+      this._storage.shift()
+    }
+
+    this._storage.push({key, value})
+  },
+})
+
 const imageDimensionsCache = createCache(CACHE_SIZE)
 
 const useImageDimensions = (image: ImageSource): Dimensions | null => {

src/view/com/lightbox/ImageViewing/hooks/usePanResponder.ts

@@ -18,11 +18,7 @@ import {
 } from 'react-native'
 
 import {Position} from '../@types'
-import {
+import {getImageTranslate} from '../utils'
-  getDistanceBetweenTouches,
-  getImageTranslate,
-  getImageDimensionsByTranslate,
-} from '../utils'
 
 const SCREEN = Dimensions.get('window')
 const SCREEN_WIDTH = SCREEN.width
@@ -404,4 +400,24 @@ const usePanResponder = ({
   return [panResponder.panHandlers, scaleValue, translateValue]
 }
 
+const getImageDimensionsByTranslate = (
+  translate: Position,
+  screen: {width: number; height: number},
+): {width: number; height: number} => ({
+  width: screen.width - translate.x * 2,
+  height: screen.height - translate.y * 2,
+})
+
+const getDistanceBetweenTouches = (touches: NativeTouchEvent[]): number => {
+  const [a, b] = touches
+
+  if (a == null || b == null) {
+    return 0
+  }
+
+  return Math.sqrt(
+    Math.pow(a.pageX - b.pageX, 2) + Math.pow(a.pageY - b.pageY, 2),
+  )
+}
+
 export default usePanResponder

src/view/com/lightbox/ImageViewing/utils.ts

@@ -6,42 +6,9 @@
  *
  */
 
-import {Animated, NativeTouchEvent} from 'react-native'
+import {Animated} from 'react-native'
 import {Dimensions, Position} from './@types'
 
-type CacheStorageItem = {key: string; value: any}
-
-export const createCache = (cacheSize: number) => ({
-  _storage: [] as CacheStorageItem[],
-  get(key: string): any {
-    const {value} =
-      this._storage.find(({key: storageKey}) => storageKey === key) || {}
-
-    return value
-  },
-  set(key: string, value: any) {
-    if (this._storage.length >= cacheSize) {
-      this._storage.shift()
-    }
-
-    this._storage.push({key, value})
-  },
-})
-
-export const splitArrayIntoBatches = (arr: any[], batchSize: number): any[] =>
-  arr.reduce((result, item) => {
-    const batch = result.pop() || []
-
-    if (batch.length < batchSize) {
-      batch.push(item)
-      result.push(batch)
-    } else {
-      result.push(batch, [item])
-    }
-
-    return result
-  }, [])
-
 export const getImageTransform = (
   image: Dimensions | null,
   screen: Dimensions,
@@ -97,43 +64,3 @@ export const getImageTranslate = (
     y: getTranslateForAxis('y'),
   }
 }
-
-export const getImageDimensionsByTranslate = (
-  translate: Position,
-  screen: Dimensions,
-): Dimensions => ({
-  width: screen.width - translate.x * 2,
-  height: screen.height - translate.y * 2,
-})
-
-export const getImageTranslateForScale = (
-  currentTranslate: Position,
-  targetScale: number,
-  screen: Dimensions,
-): Position => {
-  const {width, height} = getImageDimensionsByTranslate(
-    currentTranslate,
-    screen,
-  )
-
-  const targetImageDimensions = {
-    width: width * targetScale,
-    height: height * targetScale,
-  }
-
-  return getImageTranslate(targetImageDimensions, screen)
-}
-
-export const getDistanceBetweenTouches = (
-  touches: NativeTouchEvent[],
-): number => {
-  const [a, b] = touches
-
-  if (a == null || b == null) {
-    return 0
-  }
-
-  return Math.sqrt(
-    Math.pow(a.pageX - b.pageX, 2) + Math.pow(a.pageY - b.pageY, 2),
-  )
-}