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[browser][mono] ST build is always sidecar on a worker #121879

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Merged
merged 1 commit into from
Nov 26, 2025
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[browser][mono] ST build is always sidecar on a worker #121879

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6 changes: 4 additions & 2 deletions src/mono/browser/runtime/loader/globals.ts
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Original file line number Diff line number Diff line change
Expand Up @@ -4,6 +4,8 @@
/* eslint-disable @typescript-eslint/triple-slash-reference */
/// <reference path="../types/sidecar.d.ts" />

import WasmEnableThreads from "consts:wasmEnableThreads";

import { exceptions, simd, relaxedSimd } from "wasm-feature-detect";

import gitHash from "consts:gitHash";
Expand All @@ -17,8 +19,8 @@ import { mono_log_error, set_thread_prefix, setup_proxy_console } from "./loggin
import { invokeLibraryInitializers } from "./libraryInitializers";
import { deep_merge_config, isDebuggingSupported } from "./config";

// if we are the first script loaded in the web worker, we are expected to become the sidecar
if (typeof importScripts === "function" && !globalThis.onmessage) {
// if we are ST build or the first script loaded in the web worker, we are expected to become the sidecar
if (typeof importScripts === "function" && (!WasmEnableThreads || !globalThis.onmessage)) {
(globalThis as any).dotnetSidecar = true;
}

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