fix: Make package.json accept newer versions of libs, e.g. Expo (#886)

This PR fixes package.json in both expo and bare resource fetchers.

- [ ] Yes
- [x] No

- [x] Bug fix (change which fixes an issue)
- [ ] New feature (change which adds functionality)
- [ ] Documentation update (improves or adds clarity to existing
documentation)
- [ ] Other (chores, tests, code style improvements etc.)

- [x] iOS
- [ ] Android

* Run minimal app that utilizes this version of our library with expo 55
(pack react native executorch and expo resource fetchers into tgz and
install in template app) and check if everything works correctly.
* Run text to image example as this PR introduces changes in this
package and check if everything works ok.

<!-- Add screenshots here, if applicable -->

Closes #882

- [x] I have performed a self-review of my code
- [x] I have commented my code, particularly in hard-to-understand areas
- [x] I have updated the documentation accordingly
- [ ] My changes generate no new warnings

<!-- Include any additional information, assumptions, or context that
reviewers might need to understand this PR. -->

Author: msluszniak

docs/docs/06-api-reference/classes/TextToImageModule.md

@@ -1,6 +1,6 @@
 # Class: TextToImageModule
 
-Defined in: [packages/react-native-executorch/src/modules/computer_vision/TextToImageModule.ts:14](https://github.com/software-mansion/react-native-executorch/blob/326d6344894d75625c600d5988666e215a32d466/packages/react-native-executorch/src/modules/computer_vision/TextToImageModule.ts#L14)
+Defined in: [packages/react-native-executorch/src/modules/computer_vision/TextToImageModule.ts:14](https://github.com/software-mansion/react-native-executorch/blob/a305030e7ac90325b5f5072ed4ef18e419f59d34/packages/react-native-executorch/src/modules/computer_vision/TextToImageModule.ts#L14)
 
 Module for text-to-image generation tasks.
 
@@ -14,7 +14,7 @@ Module for text-to-image generation tasks.
 
 > **new TextToImageModule**(`inferenceCallback?`): `TextToImageModule`
 
-Defined in: [packages/react-native-executorch/src/modules/computer_vision/TextToImageModule.ts:22](https://github.com/software-mansion/react-native-executorch/blob/326d6344894d75625c600d5988666e215a32d466/packages/react-native-executorch/src/modules/computer_vision/TextToImageModule.ts#L22)
+Defined in: [packages/react-native-executorch/src/modules/computer_vision/TextToImageModule.ts:22](https://github.com/software-mansion/react-native-executorch/blob/a305030e7ac90325b5f5072ed4ef18e419f59d34/packages/react-native-executorch/src/modules/computer_vision/TextToImageModule.ts#L22)
 
 Creates a new instance of `TextToImageModule` with optional callback on inference step.
 
@@ -40,7 +40,7 @@ Optional callback function that receives the current step index during inference
 
 > **nativeModule**: `any` = `null`
 
-Defined in: [packages/react-native-executorch/src/modules/BaseModule.ts:8](https://github.com/software-mansion/react-native-executorch/blob/326d6344894d75625c600d5988666e215a32d466/packages/react-native-executorch/src/modules/BaseModule.ts#L8)
+Defined in: [packages/react-native-executorch/src/modules/BaseModule.ts:8](https://github.com/software-mansion/react-native-executorch/blob/a305030e7ac90325b5f5072ed4ef18e419f59d34/packages/react-native-executorch/src/modules/BaseModule.ts#L8)
 
 Native module instance
 
@@ -54,7 +54,7 @@ Native module instance
 
 > **delete**(): `void`
 
-Defined in: [packages/react-native-executorch/src/modules/BaseModule.ts:41](https://github.com/software-mansion/react-native-executorch/blob/326d6344894d75625c600d5988666e215a32d466/packages/react-native-executorch/src/modules/BaseModule.ts#L41)
+Defined in: [packages/react-native-executorch/src/modules/BaseModule.ts:41](https://github.com/software-mansion/react-native-executorch/blob/a305030e7ac90325b5f5072ed4ef18e419f59d34/packages/react-native-executorch/src/modules/BaseModule.ts#L41)
 
 Unloads the model from memory.
 
@@ -70,9 +70,9 @@ Unloads the model from memory.
 
 ### forward()
 
-> **forward**(`input`, `imageSize`, `numSteps`, `seed?`): `Promise`\<`string`\>
+> **forward**(`input`, `imageSize?`, `numSteps?`, `seed?`): `Promise`\<`string`\>
 
-Defined in: [packages/react-native-executorch/src/modules/computer_vision/TextToImageModule.ts:100](https://github.com/software-mansion/react-native-executorch/blob/326d6344894d75625c600d5988666e215a32d466/packages/react-native-executorch/src/modules/computer_vision/TextToImageModule.ts#L100)
+Defined in: [packages/react-native-executorch/src/modules/computer_vision/TextToImageModule.ts:100](https://github.com/software-mansion/react-native-executorch/blob/a305030e7ac90325b5f5072ed4ef18e419f59d34/packages/react-native-executorch/src/modules/computer_vision/TextToImageModule.ts#L100)
 
 Runs the model to generate an image described by `input`, and conditioned by `seed`, performing `numSteps` inference steps.
 The resulting image, with dimensions `imageSize`×`imageSize` pixels, is returned as a base64-encoded string.
@@ -85,13 +85,13 @@ The resulting image, with dimensions `imageSize`×`imageSize` pixels, is returne
 
 The text prompt to generate the image from.
 
-##### imageSize
+##### imageSize?
 
 `number` = `512`
 
 The desired width and height of the output image in pixels.
 
-##### numSteps
+##### numSteps?
 
 `number` = `5`
 
@@ -115,7 +115,7 @@ A Base64-encoded string representing the generated PNG image.
 
 > `protected` **forwardET**(`inputTensor`): `Promise`\<[`TensorPtr`](../interfaces/TensorPtr.md)[]\>
 
-Defined in: [packages/react-native-executorch/src/modules/BaseModule.ts:23](https://github.com/software-mansion/react-native-executorch/blob/326d6344894d75625c600d5988666e215a32d466/packages/react-native-executorch/src/modules/BaseModule.ts#L23)
+Defined in: [packages/react-native-executorch/src/modules/BaseModule.ts:23](https://github.com/software-mansion/react-native-executorch/blob/a305030e7ac90325b5f5072ed4ef18e419f59d34/packages/react-native-executorch/src/modules/BaseModule.ts#L23)
 
 Runs the model's forward method with the given input tensors.
 It returns the output tensors that mimic the structure of output from ExecuTorch.
@@ -144,7 +144,7 @@ Array of output tensors.
 
 > **getInputShape**(`methodName`, `index`): `Promise`\<`number`[]\>
 
-Defined in: [packages/react-native-executorch/src/modules/BaseModule.ts:34](https://github.com/software-mansion/react-native-executorch/blob/326d6344894d75625c600d5988666e215a32d466/packages/react-native-executorch/src/modules/BaseModule.ts#L34)
+Defined in: [packages/react-native-executorch/src/modules/BaseModule.ts:34](https://github.com/software-mansion/react-native-executorch/blob/a305030e7ac90325b5f5072ed4ef18e419f59d34/packages/react-native-executorch/src/modules/BaseModule.ts#L34)
 
 Gets the input shape for a given method and index.
 
@@ -178,7 +178,7 @@ The input shape as an array of numbers.
 
 > **interrupt**(): `void`
 
-Defined in: [packages/react-native-executorch/src/modules/computer_vision/TextToImageModule.ts:127](https://github.com/software-mansion/react-native-executorch/blob/326d6344894d75625c600d5988666e215a32d466/packages/react-native-executorch/src/modules/computer_vision/TextToImageModule.ts#L127)
+Defined in: [packages/react-native-executorch/src/modules/computer_vision/TextToImageModule.ts:132](https://github.com/software-mansion/react-native-executorch/blob/a305030e7ac90325b5f5072ed4ef18e419f59d34/packages/react-native-executorch/src/modules/computer_vision/TextToImageModule.ts#L132)
 
 Interrupts model generation. The model is stopped in the nearest step.
 
@@ -190,9 +190,9 @@ Interrupts model generation. The model is stopped in the nearest step.
 
 ### load()
 
-> **load**(`model`, `onDownloadProgressCallback`): `Promise`\<`void`\>
+> **load**(`model`, `onDownloadProgressCallback?`): `Promise`\<`void`\>
 
-Defined in: [packages/react-native-executorch/src/modules/computer_vision/TextToImageModule.ts:35](https://github.com/software-mansion/react-native-executorch/blob/326d6344894d75625c600d5988666e215a32d466/packages/react-native-executorch/src/modules/computer_vision/TextToImageModule.ts#L35)
+Defined in: [packages/react-native-executorch/src/modules/computer_vision/TextToImageModule.ts:35](https://github.com/software-mansion/react-native-executorch/blob/a305030e7ac90325b5f5072ed4ef18e419f59d34/packages/react-native-executorch/src/modules/computer_vision/TextToImageModule.ts#L35)
 
 Loads the model from specified resources.
 
@@ -222,7 +222,7 @@ Object containing sources for tokenizer, scheduler, encoder, unet, and decoder.
 
 [`ResourceSource`](../type-aliases/ResourceSource.md)
 
-##### onDownloadProgressCallback
+##### onDownloadProgressCallback?
 
 (`progress`) => `void`
 

packages/expo-resource-fetcher/package.json

@@ -0,0 +1,45 @@
+{
+  "name": "@react-native-executorch/expo-resource-fetcher",
+  "version": "0.1.0",
+  "description": "Expo resource fetcher for react-native-executorch",
+  "main": "lib/index.js",
+  "types": "lib/index.d.ts",
+  "exports": {
+    ".": {
+      "import": "./lib/index.js",
+      "types": "./lib/index.d.ts"
+    }
+  },
+  "files": [
+    "lib"
+  ],
+  "license": "MIT",
+  "repository": {
+    "type": "git",
+    "url": "git+https://github.com/software-mansion/react-native-executorch.git",
+    "directory": "packages/expo-resource-fetcher"
+  },
+  "scripts": {
+    "prepare": "tsc",
+    "typecheck": "tsc --noEmit",
+    "lint": "eslint \"**/*.{js,ts,tsx}\"",
+    "clean": "del-cli lib"
+  },
+  "peerDependencies": {
+    "expo": ">=54.0.0",
+    "expo-asset": ">=12.0.0",
+    "expo-file-system": ">=19.0.0",
+    "react-native": "*",
+    "react-native-executorch": "*"
+  },
+  "devDependencies": {
+    "@types/react": "~19.1.10",
+    "expo": "^54.0.0",
+    "expo-asset": "12.0.11",
+    "expo-file-system": "^19.0.20",
+    "react": "19.1.0",
+    "react-native": "0.81.5",
+    "react-native-executorch": "workspace:*",
+    "typescript": "~5.9.2"
+  }
+}

packages/react-native-executorch/package.json

@@ -67,8 +67,8 @@
   },
   "peerDependencies": {
     "expo": ">=54.0.0",
-    "expo-asset": "^12.0.0",
-    "expo-file-system": "^19.0.0",
+    "expo-asset": ">=12.0.0",
+    "expo-file-system": ">=19.0.0",
     "react": "*",
     "react-native": "*"
   },

packages/react-native-executorch/src/modules/computer_vision/TextToImageModule.ts

@@ -1,7 +1,7 @@
 import { ResourceFetcher } from '../../utils/ResourceFetcher';
 import { ResourceSource } from '../../types/common';
 import { BaseModule } from '../BaseModule';
-import { Buffer } from 'buffer';
+
 import { PNG } from 'pngjs/browser';
 import { RnExecutorchErrorCode } from '../../errors/ErrorCodes';
 import { RnExecutorchError } from '../../errors/errorUtils';
@@ -115,10 +115,15 @@ export class TextToImageModule extends BaseModule {
       return '';
     }
     const png = new PNG({ width: imageSize, height: imageSize });
-    png.data = Buffer.from(outputArray);
+    png.data = outputArray as unknown as Buffer;
     const pngBuffer = PNG.sync.write(png, { colorType: 6 });
-    const pngString = pngBuffer.toString('base64');
-    return pngString;
+    const pngArray = new Uint8Array(pngBuffer as unknown as ArrayBufferLike);
+    let binary = '';
+    const chunkSize = 8192;
+    for (let i = 0; i < pngArray.length; i += chunkSize) {
+      binary += String.fromCharCode(...pngArray.subarray(i, i + chunkSize));
+    }
+    return btoa(binary);
   }
 
   /**

yarn.lock

@@ -12966,8 +12966,8 @@ __metadata:
     zod: "npm:^3.25.0"
   peerDependencies:
     expo: ">=54.0.0"
-    expo-asset: ^12.0.0
-    expo-file-system: ^19.0.0
+    expo-asset: ">=12.0.0"
+    expo-file-system: ">=19.0.0"
     react: "*"
     react-native: "*"
   languageName: unknown