43 lines
1.4 KiB
TypeScript
43 lines
1.4 KiB
TypeScript
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import { InitInput } from './types.js'
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export async function loadWasmBinary(input?: InitInput): Promise<WebAssembly.Instance> {
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if (typeof input === 'undefined') {
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input = new URL('../mtcute.wasm', import.meta.url)
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}
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if (
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typeof input === 'string' ||
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(typeof Request === 'function' && input instanceof Request) ||
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(typeof URL === 'function' && input instanceof URL)
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) {
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input = await fetch(input)
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}
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if (typeof Response === 'function' && input instanceof Response) {
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if (typeof WebAssembly.instantiateStreaming === 'function') {
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try {
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const { instance } = await WebAssembly.instantiateStreaming(input)
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return instance
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} catch (e) {
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if (input.headers.get('Content-Type') !== 'application/wasm') {
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console.warn(
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'`WebAssembly.instantiateStreaming` failed because your server does not serve wasm with `application/wasm` MIME type. Falling back to `WebAssembly.instantiate` which is slower. Original error:\n',
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e,
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)
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} else {
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throw e
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}
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}
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}
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const bytes = await input.arrayBuffer()
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const { instance } = await WebAssembly.instantiate(bytes)
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return instance
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}
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return await WebAssembly.instantiate(input)
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}
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