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63 lines
2.1 KiB
63 lines
2.1 KiB
import { Platform } from 'expo-modules-core';
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import { PixelRatio } from 'react-native';
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// Returns the Metro dev server-specific asset location.
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function getScaledAssetPath(asset) {
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const scale = AssetSourceResolver.pickScale(asset.scales, PixelRatio.get());
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const scaleSuffix = scale === 1 ? '' : '@' + scale + 'x';
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const type = !asset.type ? '' : `.${asset.type}`;
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return asset.httpServerLocation + '/' + asset.name + scaleSuffix + type;
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}
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export default class AssetSourceResolver {
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serverUrl;
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// where the jsbundle is being run from
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// NOTE(EvanBacon): Never defined on web.
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jsbundleUrl;
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// the asset to resolve
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asset;
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constructor(serverUrl, jsbundleUrl, asset) {
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if (!serverUrl) {
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throw new Error('Web assets require a server URL');
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}
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this.serverUrl = serverUrl;
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this.jsbundleUrl = null;
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this.asset = asset;
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}
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// Always true for web runtimes
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isLoadedFromServer() {
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return true;
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}
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// Always false for web runtimes
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isLoadedFromFileSystem() {
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return false;
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}
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defaultAsset() {
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return this.assetServerURL();
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}
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/**
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* @returns absolute remote URL for the hosted asset.
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*/
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assetServerURL() {
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const fromUrl = new URL(getScaledAssetPath(this.asset), this.serverUrl);
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fromUrl.searchParams.set('platform', Platform.OS);
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fromUrl.searchParams.set('hash', this.asset.hash);
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return this.fromSource(fromUrl.toString());
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}
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fromSource(source) {
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return {
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__packager_asset: true,
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width: this.asset.width ?? undefined,
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height: this.asset.height ?? undefined,
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uri: source,
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scale: AssetSourceResolver.pickScale(this.asset.scales, PixelRatio.get()),
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};
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}
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static pickScale(scales, deviceScale) {
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for (let i = 0; i < scales.length; i++) {
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if (scales[i] >= deviceScale) {
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return scales[i];
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}
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}
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return scales[scales.length - 1] || 1;
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}
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}
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//# sourceMappingURL=AssetSourceResolver.web.js.map
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