Interface: ResourceFetcherAdapter

Defined in: utils/ResourceFetcher.ts:18

Adapter interface for resource fetching operations. Required Methods:

• fetch: Download resources to local storage (used by all modules)
• readAsString: Read file contents as string (used for config files)

Remarks

This interface is intentionally minimal. Custom fetchers only need to implement these two methods for the library to function correctly.

Methods

fetch()

fetch(callback, ...sources): Promise<{ paths: string[]; wasDownloaded: boolean[]; }>

Defined in: utils/ResourceFetcher.ts:28

Fetches resources (remote URLs, local files or embedded assets), downloads or stores them locally for use by React Native ExecuTorch.

Parameters

callback

(downloadProgress) => void

Optional callback to track progress of all downloads, reported between 0 and 1.

sources

...ResourceSource[]

Multiple resources that can be strings, asset references, or objects.

Returns

Promise<{ paths: string[]; wasDownloaded: boolean[]; }>

If the fetch was successful, it returns a promise which resolves to an array of local file paths for the downloaded/stored resources (without file:// prefix). If the fetch was interrupted, it returns a promise which resolves to null.

Remarks

REQUIRED: Used by all library modules for downloading models and resources.

---

readAsString()

readAsString(path): Promise<string>

Defined in: utils/ResourceFetcher.ts:40

Read file contents as a string.

Parameters

path

string

Absolute file path

Returns

Promise<string>

File contents as string

Remarks

REQUIRED: Used internally for reading configuration files (e.g., tokenizer configs).