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// Copyright 2018-2022 the Deno authors. All rights reserved. MIT license.// deno-lint-ignore-file
const targetDir = Deno.execPath().replace(/[^\/\\]+$/, "");const [libPrefix, libSuffix] = {  darwin: ["lib", "dylib"],  linux: ["lib", "so"],  windows: ["", "dll"],}[Deno.build.os];const libPath = `${targetDir}/${libPrefix}test_ffi.${libSuffix}`;
const dylib = Deno.dlopen(libPath, {  store_function: {    parameters: ["function"],    result: "void",  },  call_stored_function: {    parameters: [],    result: "void",  },});
const callback = new Deno.UnsafeCallback(  { parameters: [], result: "void" },  () => {    console.log("Callback on worker thread");  },);
callback.ref();
self.addEventListener("message", ({ data }) => {  if (data === "register") {    dylib.symbols.store_function(callback.pointer);  } else if (data === "call") {    dylib.symbols.call_stored_function();  } else if (data === "unref") {    callback.unref();  }  self.postMessage("done");});