itk-wasm
Version:
High-performance spatial analysis in a web browser, Node.js, and reproducible execution across programming languages and hardware architectures.
49 lines • 1.88 kB
JavaScript
import axios from 'axios';
import { ZSTDDecoder } from '@thewtex/zstddec';
const decoder = new ZSTDDecoder();
let decoderInitialized = false;
// Load the Emscripten module in the browser in a WebWorker.
//
// baseUrl is usually taken from 'getPipelinesBaseUrl()', but a different value
// could be passed.
async function loadEmscriptenModuleWebWorker(moduleRelativePathOrURL, baseUrl, queryParams) {
let modulePrefix = null;
if (typeof moduleRelativePathOrURL !== 'string') {
modulePrefix = moduleRelativePathOrURL.href;
}
else if (moduleRelativePathOrURL.startsWith('http')) {
modulePrefix = moduleRelativePathOrURL;
}
else {
modulePrefix = `${baseUrl}/${moduleRelativePathOrURL}`;
}
if (modulePrefix.endsWith('.js')) {
modulePrefix = modulePrefix.substring(0, modulePrefix.length - 3);
}
if (modulePrefix.endsWith('.wasm')) {
modulePrefix = modulePrefix.substring(0, modulePrefix.length - 5);
}
if (modulePrefix.endsWith('.wasm.zst')) {
modulePrefix = modulePrefix.substring(0, modulePrefix.length - 9);
}
const wasmBinaryPath = `${modulePrefix}.wasm`;
const response = await axios.get(`${wasmBinaryPath}.zst`, {
responseType: 'arraybuffer',
params: queryParams
});
if (!decoderInitialized) {
await decoder.init();
decoderInitialized = true;
}
const decompressedArray = decoder.decode(new Uint8Array(response.data));
const wasmBinary = decompressedArray.buffer;
const modulePath = `${modulePrefix}.js`;
const result = await import(
/* webpackIgnore: true */ /* @vite-ignore */ modulePath);
const emscriptenModule = result.default({
wasmBinary
});
return emscriptenModule;
}
export default loadEmscriptenModuleWebWorker;
//# sourceMappingURL=load-emscripten-module-web-worker.js.map