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import Constants from 'expo-constants';
import * as FileSystem from 'expo-file-system';
import { getLocalAssets } from './PlatformUtils';
// Fast lookup check if assets are available in the local bundle in managed apps
const bundledAssets = new Set(FileSystem.bundledAssets || []);
// localAssets are provided by the expo-updates module
const localAssets = getLocalAssets();
/**
* Returns the URI of a local asset from its hash, or null if the asset is not available locally
*/
export function getLocalAssetUri(hash, type) {
const localAssetsKey = hash;
const legacyLocalAssetsKey = `${hash}.${type ?? ''}`;
switch (true) {
case localAssetsKey in localAssets: {
return localAssets[localAssetsKey];
}
case legacyLocalAssetsKey in localAssets: {
// legacy updates store assets with an extension
return localAssets[legacyLocalAssetsKey];
}
case !__DEV__: {
// check legacy location in case we're in Expo client/managed workflow
// TODO(eric): remove this once bundledAssets is no longer exported from FileSystem
const assetName = `asset_${hash}${type ? `.${type}` : ''}`;
if (Constants.appOwnership !== 'standalone' || !bundledAssets.has(assetName)) {
return null;
}
return `${FileSystem.bundleDirectory}${assetName}`;
}
default:
return null;
}
}
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