refactor(ext/node): worker_threads.isMainThread setup (#22785)

This commit changes how we figure out if we're running on main
thread in `node:worker_threads` module. Instead of relying on quirky
"magic variable" for a name to check if we're on main thread, we are
now explicitly passing this information during bootstrapping of the
runtime. As a side effect, `WorkerOptions.name` is more useful
and matches what Node.js does more closely (though not fully).

Towards https://github.com/denoland/deno/issues/22783

1 files changed, 2 insertions, 1 deletions

diff --git a/ext/node/polyfills/02_init.js b/ext/node/polyfills/02_init.js
index 7d433fe0c..84f8a7cdc 100644
--- a/ext/node/polyfills/02_init.js
+++ b/ext/node/polyfills/02_init.js
@@ -13,6 +13,7 @@ let initialized = false;
 function initialize(
   usesLocalNodeModulesDir,
   argv0,
+  runningOnMainThread,
 ) {
   if (initialized) {
     throw Error("Node runtime already initialized");
@@ -37,7 +38,7 @@ function initialize(
   // FIXME(bartlomieju): not nice to depend on `Deno` namespace here
   // but it's the only way to get `args` and `version` and this point.
   internals.__bootstrapNodeProcess(argv0, Deno.args, Deno.version);
-  internals.__initWorkerThreads();
+  internals.__initWorkerThreads(runningOnMainThread);
   internals.__setupChildProcessIpcChannel();
   // `Deno[Deno.internal].requireImpl` will be unreachable after this line.
   delete internals.requireImpl;