60 lines
2.1 KiB
TypeScript
60 lines
2.1 KiB
TypeScript
import {
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type WasmThreadingCapabilities,
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} from "../../../protocol/engine-variant";
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export { gateWasmThreadingCapability, selectWebEngineVariant } from "../../../protocol/engine-variant";
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export type { WasmThreadingCapabilities } from "../../../protocol/engine-variant";
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export interface BrowserCapabilities extends WasmThreadingCapabilities {
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webgl2: boolean;
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offscreenCanvas: boolean;
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opfs: boolean;
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wasm: boolean;
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wasmSimd: boolean;
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wasmThreads: boolean;
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storageEstimate: boolean;
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indexedDb: boolean;
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}
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function supportsWasmFeature(feature: "simd" | "threads"): boolean {
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if (typeof WebAssembly === "undefined") return false;
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const modules: Record<typeof feature, Uint8Array> = {
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simd: new Uint8Array([
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0x00, 0x61, 0x73, 0x6d, 0x01, 0x00, 0x00, 0x00, 0x01, 0x04, 0x01, 0x60,
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0x00, 0x00, 0x03, 0x02, 0x01, 0x00, 0x0a, 0x0b, 0x01, 0x09, 0x00, 0xfd,
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0x00, 0x00, 0x0b,
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]),
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threads: new Uint8Array([
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0x00, 0x61, 0x73, 0x6d, 0x01, 0x00, 0x00, 0x00, 0x01, 0x04, 0x01, 0x60,
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0x00, 0x00, 0x05, 0x04, 0x01, 0x01, 0x01, 0x00, 0x0a, 0x04, 0x01, 0x02,
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0x00, 0x0b,
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]),
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};
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try {
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return WebAssembly.validate(modules[feature] as BufferSource);
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} catch {
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return false;
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}
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}
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export function detectBrowserCapabilities(): BrowserCapabilities {
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const canvas = typeof document === "undefined" ? undefined : document.createElement("canvas");
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const webgl2 = Boolean(canvas?.getContext("webgl2"));
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const storage = typeof navigator === "undefined" ? undefined : navigator.storage;
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return {
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crossOriginIsolated: globalThis.crossOriginIsolated === true,
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webgl2,
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offscreenCanvas: typeof OffscreenCanvas !== "undefined",
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opfs: Boolean(storage?.getDirectory),
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sharedArrayBuffer: typeof SharedArrayBuffer !== "undefined",
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worker: typeof Worker !== "undefined",
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wasm: typeof WebAssembly !== "undefined",
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wasmSimd: supportsWasmFeature("simd"),
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wasmThreads: supportsWasmFeature("threads"),
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storageEstimate: Boolean(storage?.estimate),
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indexedDb: typeof indexedDB !== "undefined",
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};
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}
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