feat: extract thumbhash to separate package

Author: DaveyEke

bun.lock

@@ -1,6 +1,7 @@
 import { Platform } from 'react-native'
 import { describe, expect, it } from 'react-native-harness'
 import { Images, loadImage } from 'react-native-nitro-image'
+import { ThumbHash } from 'react-native-nitro-image-thumbhash'
 import { WebImages } from 'react-native-nitro-web-image'
 
 const RED = { r: 1, g: 0, b: 0, a: 1 }
@@ -96,19 +97,19 @@ describe('Images.loadFromFile', () => {
   })
 })
 
-describe('Images.loadFromThumbHash', () => {
+describe('ThumbHash.decode', () => {
   it('decodes a ThumbHash buffer back into an Image', () => {
     const source = Images.createBlankImage(64, 64, true, BLUE).resize(32, 32)
-    const hash = source.toThumbHash()
-    const decoded = Images.loadFromThumbHash(hash)
+    const hash = ThumbHash.encode(source)
+    const decoded = ThumbHash.decode(hash)
     expect(decoded.width).toBeGreaterThan(0)
     expect(decoded.height).toBeGreaterThan(0)
   })
 
   it('async variant decodes the ThumbHash buffer', async () => {
     const source = Images.createBlankImage(64, 64, true, GREEN).resize(32, 32)
-    const hash = await source.toThumbHashAsync()
-    const decoded = await Images.loadFromThumbHashAsync(hash)
+    const hash = await ThumbHash.encodeAsync(source)
+    const decoded = await ThumbHash.decodeAsync(hash)
     expect(decoded.width).toBeGreaterThan(0)
     expect(decoded.height).toBeGreaterThan(0)
   })

example/__tests__/image-loaders.harness.ts

@@ -3,9 +3,8 @@ import {
   Images,
   supportsHeicLoading,
   supportsHeicWriting,
-  thumbHashFromBase64String,
-  thumbHashToBase64String,
 } from 'react-native-nitro-image'
+import { ThumbHash } from 'react-native-nitro-image-thumbhash'
 
 describe('ImageUtils - HEIC round-trip', () => {
   it('encodes an image as HEIC, writes it to disk and loads it back', async () => {
@@ -44,7 +43,7 @@ describe('ImageUtils - HEIC round-trip', () => {
   })
 })
 
-describe('ImageUtils - thumbHash round-trip', () => {
+describe('ThumbHash - round-trip', () => {
   it('encodes a small image to a thumbHash and converts to base64', () => {
     const image = Images.createBlankImage(64, 64, true, {
       r: 0.5,
@@ -53,14 +52,14 @@ describe('ImageUtils - thumbHash round-trip', () => {
       a: 1,
     })
     const small = image.resize(32, 32)
-    const hash = small.toThumbHash()
+    const hash = ThumbHash.encode(small)
     expect(hash.byteLength).toBeGreaterThan(0)
 
-    const base64 = thumbHashToBase64String(hash)
+    const base64 = ThumbHash.toBase64String(hash)
     expect(base64.length).toBeGreaterThan(0)
     expect(base64).toMatch(/^[A-Za-z0-9+/=]+$/)
 
-    const restored = thumbHashFromBase64String(base64)
+    const restored = ThumbHash.fromBase64String(base64)
     expect(restored.byteLength).toBe(hash.byteLength)
   })
 
@@ -71,8 +70,8 @@ describe('ImageUtils - thumbHash round-trip', () => {
       b: 0,
       a: 1,
     })
-    const hash = image.toThumbHash()
-    const decoded = Images.loadFromThumbHash(hash)
+    const hash = ThumbHash.encode(image)
+    const decoded = ThumbHash.decode(hash)
     expect(decoded.width).toBeGreaterThan(0)
     expect(decoded.height).toBeGreaterThan(0)
   })