Performance issues with using automatic url detection

[eliassjogreen]

When running the tests using the options

const options: Plug.Options = {
  name: "test_plugin",
  url: path,
  cache: resolveTest("cache"),
};

instead of

const options: Plug.Options = {
  name: "test_plugin",
  urls: {
    darwin: `${path}/libtest_plugin.dylib`,
    windows: `${path}/test_plugin.dll`,
    linux: `${path}/libtest_plugin.so`,
  },
  cache: resolveTest("cache"),
};

the results differ with around a second in delay per test. Using automatic url detection:

running 3 tests
test remote | prepare ... Check file:///F:/code/denosaurs/plug/test/remote.ts
/test_plugin/target/debug/test_plugin.dll
Hello from plugin.
zero_copy[0]: test
zero_copy[1]: test
Hello from plugin.
zero_copy[0]: test
zero_copy[1]: test
ok (2317ms)
test local | prepare | relative ... Check file:///F:/code/denosaurs/plug/test/local.ts
Hello from plugin.
zero_copy[0]: test
zero_copy[1]: test
Hello from plugin.
zero_copy[0]: test
zero_copy[1]: test
ok (2136ms)
test local | prepare | absolute ... Check file:///F:/code/denosaurs/plug/test/abs.ts
Hello from plugin.
zero_copy[0]: test
zero_copy[1]: test
Hello from plugin.
zero_copy[0]: test
zero_copy[1]: test
ok (2084ms)

test result: ok. 3 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out (6537ms)

normal:

running 3 tests
test remote | prepare ... Check file:///F:/code/denosaurs/plug/test/remote.ts
/test_plugin/target/debug/test_plugin.dll
Hello from plugin.
zero_copy[0]: test
zero_copy[1]: test
Hello from plugin.
zero_copy[0]: test
zero_copy[1]: test
ok (1192ms)
test local | prepare | relative ... Check file:///F:/code/denosaurs/plug/test/local.ts
Hello from plugin.
zero_copy[0]: test
zero_copy[1]: test
Hello from plugin.
zero_copy[0]: test
zero_copy[1]: test
ok (1001ms)
test local | prepare | absolute ... Check file:///F:/code/denosaurs/plug/test/abs.ts
Hello from plugin.
zero_copy[0]: test
zero_copy[1]: test
Hello from plugin.
zero_copy[0]: test
zero_copy[1]: test
ok (969ms)

test result: ok. 3 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out (3165ms)