test: run js_unit_tests with --unstable-* flags (#25394)

runtime/js/99_main.js

@@ -722,26 +722,27 @@ function bootstrapMainRuntime(runtimeOptions, warmup = false) {
       target,
     );
 
+    // TODO(bartlomieju): this is not ideal, but because we use `ObjectAssign`
+    // above any properties that are defined elsewhere using `Object.defineProperty`
+    // are lost.
+    let jupyterNs = undefined;
+    ObjectDefineProperty(finalDenoNs, "jupyter", {
+      get() {
+        if (jupyterNs) {
+          return jupyterNs;
+        }
+        throw new Error(
+          "Deno.jupyter is only available in `deno jupyter` subcommand.",
+        );
+      },
+      set(val) {
+        jupyterNs = val;
+      },
+    });
+
     // TODO(bartlomieju): deprecate --unstable
     if (unstableFlag) {
       ObjectAssign(finalDenoNs, denoNsUnstable);
-      // TODO(bartlomieju): this is not ideal, but because we use `ObjectAssign`
-      // above any properties that are defined elsewhere using `Object.defineProperty`
-      // are lost.
-      let jupyterNs = undefined;
-      ObjectDefineProperty(finalDenoNs, "jupyter", {
-        get() {
-          if (jupyterNs) {
-            return jupyterNs;
-          }
-          throw new Error(
-            "Deno.jupyter is only available in `deno jupyter` subcommand.",
-          );
-        },
-        set(val) {
-          jupyterNs = val;
-        },
-      });
     } else {
       for (let i = 0; i <= unstableFeatures.length; i++) {
         const id = unstableFeatures[i];

runtime/lib.rs

@@ -83,7 +83,7 @@ pub static UNSTABLE_GRANULAR_FLAGS: &[UnstableGranularFlag] = &[
   UnstableGranularFlag {
     name: ops::http::UNSTABLE_FEATURE_NAME,
     help_text: "Enable unstable HTTP APIs",
-    show_in_help: false,
+    show_in_help: true,
     id: 5,
   },
   UnstableGranularFlag {

tests/integration/js_unit_tests.rs

@@ -116,22 +116,40 @@ util::unit_test_factory!(
 fn js_unit_test(test: String) {
   let _g = util::http_server();
 
-  let deno = util::deno_cmd()
+  let mut deno = util::deno_cmd()
     .current_dir(util::root_path())
     .arg("test")
     .arg("--config")
     .arg(util::deno_config_path())
     .arg("--no-lock")
-    .arg("--unstable")
+    // TODO(bartlomieju): would be better if we could apply this unstable
+    // flag to particular files, but there's many of them that rely on unstable
+    // net APIs (`reusePort` in `listen` and `listenTls`; `listenDatagram`, `createHttpClient`)
+    .arg("--unstable-net")
+    .arg("--unstable-http")
     .arg("--location=http://127.0.0.1:4545/")
     .arg("--no-prompt");
 
+  if test == "broadcast_channel_test" {
+    deno = deno.arg("--unstable-broadcast-channel");
+  }
+
+  if test == "cron_test" {
+    deno = deno.arg("--unstable-cron");
+  }
+
+  if test.contains("kv_") {
+    deno = deno.arg("--unstable-kv");
+  }
+
+  if test == "worker_permissions_test" || test == "worker_test" {
+    deno = deno.arg("--unstable-worker-options");
+  }
+
   // TODO(mmastrac): it would be better to just load a test CA for all tests
-  let deno = if test == "websocket_test" || test == "tls_sni_test" {
+  if test == "websocket_test" || test == "tls_sni_test" {
-    deno.arg("--unsafely-ignore-certificate-errors")
+    deno = deno.arg("--unsafely-ignore-certificate-errors");
-  } else {
+  }
-    deno
-  };
 
   let mut deno = deno
     .arg("-A")