BREAKING: Remove `--unstable` flag (#25522)

This commit effectively removes the --unstable flag.

It's still being parsed, but it only prints a warning that a granular
flag should be used instead and doesn't actually enable any
unstable feature.

Closes https://github.com/denoland/deno/issues/25485
Closes https://github.com/denoland/deno/issues/23237

2 files changed, 36 insertions, 88 deletions

diff --git a/runtime/js/90_deno_ns.js b/runtime/js/90_deno_ns.js
index e14dc506e..23f7da95c 100644
--- a/runtime/js/90_deno_ns.js
+++ b/runtime/js/90_deno_ns.js
@@ -194,27 +194,4 @@ denoNsUnstableById[unstableIds.webgpu] = {
 
 // denoNsUnstableById[unstableIds.workerOptions] = { __proto__: null }
 
-// when editing this list, also update unstableDenoProps in cli/tsc/99_main_compiler.js
-const denoNsUnstable = {
-  listenDatagram: net.createListenDatagram(
-    op_net_listen_udp,
-    op_net_listen_unixpacket,
-  ),
-  umask: fs.umask,
-  HttpClient: httpClient.HttpClient,
-  createHttpClient: httpClient.createHttpClient,
-  dlopen: ffi.dlopen,
-  UnsafeCallback: ffi.UnsafeCallback,
-  UnsafePointer: ffi.UnsafePointer,
-  UnsafePointerView: ffi.UnsafePointerView,
-  UnsafeFnPointer: ffi.UnsafeFnPointer,
-  UnsafeWindowSurface: webgpuSurface.UnsafeWindowSurface,
-  openKv: kv.openKv,
-  AtomicOperation: kv.AtomicOperation,
-  Kv: kv.Kv,
-  KvU64: kv.KvU64,
-  KvListIterator: kv.KvListIterator,
-  cron: cron.cron,
-};
-
-export { denoNs, denoNsUnstable, denoNsUnstableById, unstableIds };
+export { denoNs, denoNsUnstableById, unstableIds };
diff --git a/runtime/js/99_main.js b/runtime/js/99_main.js
index 2d5c96f6a..f81ab3d8f 100644
--- a/runtime/js/99_main.js
+++ b/runtime/js/99_main.js
@@ -37,7 +37,6 @@ const {
   ObjectKeys,
   ObjectPrototypeIsPrototypeOf,
   ObjectSetPrototypeOf,
-  ObjectValues,
   PromisePrototypeThen,
   PromiseResolve,
   StringPrototypePadEnd,
@@ -67,7 +66,6 @@ import * as fetch from "ext:deno_fetch/26_fetch.js";
 import * as messagePort from "ext:deno_web/13_message_port.js";
 import {
   denoNs,
-  denoNsUnstable,
   denoNsUnstableById,
   unstableIds,
 } from "ext:runtime/90_deno_ns.js";
@@ -439,28 +437,19 @@ ObjectDefineProperties(globalThis, windowOrWorkerGlobalScope);
 
 // Set up global properties shared by main and worker runtime that are exposed
 // by unstable features if those are enabled.
-function exposeUnstableFeaturesForWindowOrWorkerGlobalScope(options) {
-  const { unstableFlag, unstableFeatures } = options;
-  if (unstableFlag) {
-    const all = ObjectValues(unstableForWindowOrWorkerGlobalScope);
-    for (let i = 0; i <= all.length; i++) {
-      const props = all[i];
-      ObjectDefineProperties(globalThis, { ...props });
-    }
-  } else {
-    const featureIds = ArrayPrototypeMap(
-      ObjectKeys(
-        unstableForWindowOrWorkerGlobalScope,
-      ),
-      (k) => k | 0,
-    );
+function exposeUnstableFeaturesForWindowOrWorkerGlobalScope(unstableFeatures) {
+  const featureIds = ArrayPrototypeMap(
+    ObjectKeys(
+      unstableForWindowOrWorkerGlobalScope,
+    ),
+    (k) => k | 0,
+  );
 
-    for (let i = 0; i <= featureIds.length; i++) {
-      const featureId = featureIds[i];
-      if (ArrayPrototypeIncludes(unstableFeatures, featureId)) {
-        const props = unstableForWindowOrWorkerGlobalScope[featureId];
-        ObjectDefineProperties(globalThis, { ...props });
-      }
+  for (let i = 0; i <= featureIds.length; i++) {
+    const featureId = featureIds[i];
+    if (ArrayPrototypeIncludes(unstableFeatures, featureId)) {
+      const props = unstableForWindowOrWorkerGlobalScope[featureId];
+      ObjectDefineProperties(globalThis, { ...props });
     }
   }
 }
@@ -572,17 +561,16 @@ function bootstrapMainRuntime(runtimeOptions, warmup = false) {
     const {
       0: denoVersion,
       1: location_,
-      2: unstableFlag,
-      3: unstableFeatures,
-      4: inspectFlag,
-      6: hasNodeModulesDir,
-      7: argv0,
-      8: nodeDebug,
-      9: mode,
-      10: servePort,
-      11: serveHost,
-      12: serveIsMain,
-      13: serveWorkerCount,
+      2: unstableFeatures,
+      3: inspectFlag,
+      5: hasNodeModulesDir,
+      6: argv0,
+      7: nodeDebug,
+      8: mode,
+      9: servePort,
+      10: serveHost,
+      11: serveIsMain,
+      12: serveWorkerCount,
     } = runtimeOptions;
 
     if (mode === executionModes.serve) {
@@ -692,10 +680,7 @@ function bootstrapMainRuntime(runtimeOptions, warmup = false) {
       location.setLocationHref(location_);
     }
 
-    exposeUnstableFeaturesForWindowOrWorkerGlobalScope({
-      unstableFlag,
-      unstableFeatures,
-    });
+    exposeUnstableFeaturesForWindowOrWorkerGlobalScope(unstableFeatures);
     ObjectDefineProperties(globalThis, mainRuntimeGlobalProperties);
     ObjectDefineProperties(globalThis, {
       // TODO(bartlomieju): in the future we might want to change the
@@ -742,14 +727,9 @@ function bootstrapMainRuntime(runtimeOptions, warmup = false) {
       },
     });
 
-    // TODO(bartlomieju): deprecate --unstable
-    if (unstableFlag) {
-      ObjectAssign(finalDenoNs, denoNsUnstable);
-    } else {
-      for (let i = 0; i <= unstableFeatures.length; i++) {
-        const id = unstableFeatures[i];
-        ObjectAssign(finalDenoNs, denoNsUnstableById[id]);
-      }
+    for (let i = 0; i <= unstableFeatures.length; i++) {
+      const id = unstableFeatures[i];
+      ObjectAssign(finalDenoNs, denoNsUnstableById[id]);
     }
 
     if (!ArrayPrototypeIncludes(unstableFeatures, unstableIds.unsafeProto)) {
@@ -825,12 +805,11 @@ function bootstrapWorkerRuntime(
     const {
       0: denoVersion,
       1: location_,
-      2: unstableFlag,
-      3: unstableFeatures,
-      5: enableTestingFeaturesFlag,
-      6: hasNodeModulesDir,
-      7: argv0,
-      8: nodeDebug,
+      2: unstableFeatures,
+      4: enableTestingFeaturesFlag,
+      5: hasNodeModulesDir,
+      6: argv0,
+      7: nodeDebug,
     } = runtimeOptions;
 
     // TODO(iuioiua): remove in Deno v2. This allows us to dynamically delete
@@ -846,10 +825,7 @@ function bootstrapWorkerRuntime(
     delete globalThis.bootstrap;
     hasBootstrapped = true;
 
-    exposeUnstableFeaturesForWindowOrWorkerGlobalScope({
-      unstableFlag,
-      unstableFeatures,
-    });
+    exposeUnstableFeaturesForWindowOrWorkerGlobalScope(unstableFeatures);
     ObjectDefineProperties(globalThis, workerRuntimeGlobalProperties);
     ObjectDefineProperties(globalThis, {
       name: core.propWritable(name),
@@ -891,14 +867,9 @@ function bootstrapWorkerRuntime(
     globalThis.pollForMessages = pollForMessages;
     globalThis.hasMessageEventListener = hasMessageEventListener;
 
-    // TODO(bartlomieju): deprecate --unstable
-    if (unstableFlag) {
-      ObjectAssign(finalDenoNs, denoNsUnstable);
-    } else {
-      for (let i = 0; i <= unstableFeatures.length; i++) {
-        const id = unstableFeatures[i];
-        ObjectAssign(finalDenoNs, denoNsUnstableById[id]);
-      }
+    for (let i = 0; i <= unstableFeatures.length; i++) {
+      const id = unstableFeatures[i];
+      ObjectAssign(finalDenoNs, denoNsUnstableById[id]);
     }
 
     // Not available in workers