chore: remove some dead code around DENO_FUTURE env var (#25418)

These codepaths were not used anymore.

7 files changed, 11 insertions, 62 deletions

diff --git a/cli/worker.rs b/cli/worker.rs
index 7000fd204..64400af20 100644
--- a/cli/worker.rs
+++ b/cli/worker.rs
@@ -138,7 +138,6 @@ struct SharedWorkerState {
   maybe_inspector_server: Option<Arc<InspectorServer>>,
   maybe_lockfile: Option<Arc<CliLockfile>>,
   feature_checker: Arc<FeatureChecker>,
-  enable_future_features: bool,
   code_cache: Option<Arc<dyn code_cache::CodeCache>>,
 }
 
@@ -453,8 +452,6 @@ impl CliMainWorkerFactory {
         maybe_inspector_server,
         maybe_lockfile,
         feature_checker,
-        // TODO(2.0): remove?
-        enable_future_features: true,
         code_cache,
       }),
     }
@@ -591,7 +588,6 @@ impl CliMainWorkerFactory {
         argv0: shared.options.argv0.clone(),
         node_debug: shared.options.node_debug.clone(),
         node_ipc_fd: shared.options.node_ipc,
-        future: shared.enable_future_features,
         mode,
         serve_port: shared.options.serve_port,
         serve_host: shared.options.serve_host.clone(),
@@ -787,7 +783,6 @@ fn create_web_worker_callback(
         argv0: shared.options.argv0.clone(),
         node_debug: shared.options.node_debug.clone(),
         node_ipc_fd: None,
-        future: shared.enable_future_features,
         mode: WorkerExecutionMode::Worker,
         serve_port: shared.options.serve_port,
         serve_host: shared.options.serve_host.clone(),
diff --git a/runtime/js/99_main.js b/runtime/js/99_main.js
index 1ffb4f6e3..6dd75b415 100644
--- a/runtime/js/99_main.js
+++ b/runtime/js/99_main.js
@@ -576,12 +576,11 @@ function bootstrapMainRuntime(runtimeOptions, warmup = false) {
       6: hasNodeModulesDir,
       7: argv0,
       8: nodeDebug,
-      9: future,
-      10: mode,
-      11: servePort,
-      12: serveHost,
-      13: serveIsMain,
-      14: serveWorkerCount,
+      9: mode,
+      10: servePort,
+      11: serveHost,
+      12: serveIsMain,
+      13: serveWorkerCount,
     } = runtimeOptions;
 
     if (mode === executionModes.serve) {
@@ -668,7 +667,7 @@ function bootstrapMainRuntime(runtimeOptions, warmup = false) {
     // TODO(iuioiua): remove in Deno v2. This allows us to dynamically delete
     // class properties within constructors for classes that are not defined
     // within the Deno namespace.
-    internals.future = future;
+    internals.future = true;
 
     removeImportedOps();
 
@@ -798,7 +797,7 @@ function bootstrapMainRuntime(runtimeOptions, warmup = false) {
         nodeDebug,
       });
     }
-    if (future) {
+    if (internals.future) {
       delete globalThis.window;
       delete Deno.Buffer;
       delete Deno.File;
@@ -835,13 +834,12 @@ function bootstrapWorkerRuntime(
       6: hasNodeModulesDir,
       7: argv0,
       8: nodeDebug,
-      9: future,
     } = runtimeOptions;
 
     // TODO(iuioiua): remove in Deno v2. This allows us to dynamically delete
     // class properties within constructors for classes that are not defined
     // within the Deno namespace.
-    internals.future = future;
+    internals.future = true;
 
     performance.setTimeOrigin(DateNow());
     globalThis_ = globalThis;
@@ -964,7 +962,7 @@ function bootstrapWorkerRuntime(
       });
     }
 
-    if (future) {
+    if (internals.future) {
       delete Deno.Buffer;
       delete Deno.File;
       delete Deno.FsFile.prototype.rid;
diff --git a/runtime/lib.rs b/runtime/lib.rs
index daa55f773..ed3f9fbc6 100644
--- a/runtime/lib.rs
+++ b/runtime/lib.rs
@@ -44,7 +44,6 @@ pub use worker_bootstrap::WorkerExecutionMode;
 pub use worker_bootstrap::WorkerLogLevel;
 
 mod shared;
-pub use shared::import_assertion_callback;
 pub use shared::runtime;
 
 pub struct UnstableGranularFlag {
diff --git a/runtime/shared.rs b/runtime/shared.rs
index c52521690..1b2136c63 100644
--- a/runtime/shared.rs
+++ b/runtime/shared.rs
@@ -116,26 +116,3 @@ pub fn maybe_transpile_source(
 
   Ok((source_text.into(), maybe_source_map))
 }
-
-pub fn import_assertion_callback(
-  args: deno_core::ImportAssertionsSupportCustomCallbackArgs,
-) {
-  let mut msg = deno_terminal::colors::yellow("⚠️  Import assertions are deprecated. Use `with` keyword, instead of 'assert' keyword.").to_string();
-  if let Some(specifier) = args.maybe_specifier {
-    if let Some(source_line) = args.maybe_source_line {
-      msg.push_str("\n\n");
-      msg.push_str(&source_line);
-      msg.push_str("\n\n");
-    }
-    msg.push_str(&format!(
-      "  at {}:{}:{}\n",
-      specifier,
-      args.maybe_line_number.unwrap(),
-      args.column_number
-    ));
-    #[allow(clippy::print_stderr)]
-    {
-      eprintln!("{}", msg);
-    }
-  }
-}
diff --git a/runtime/web_worker.rs b/runtime/web_worker.rs
index ad0ac5a3f..e14328861 100644
--- a/runtime/web_worker.rs
+++ b/runtime/web_worker.rs
@@ -545,13 +545,6 @@ impl WebWorker {
       options.bootstrap.enable_op_summary_metrics,
       options.strace_ops,
     );
-    let import_assertions_support = if options.bootstrap.future {
-      deno_core::ImportAssertionsSupport::Error
-    } else {
-      deno_core::ImportAssertionsSupport::CustomCallback(Box::new(
-        crate::shared::import_assertion_callback,
-      ))
-    };
 
     let mut js_runtime = JsRuntime::new(RuntimeOptions {
       module_loader: Some(options.module_loader.clone()),
@@ -572,7 +565,7 @@ impl WebWorker {
       validate_import_attributes_cb: Some(Box::new(
         validate_import_attributes_callback,
       )),
-      import_assertions_support,
+      import_assertions_support: deno_core::ImportAssertionsSupport::Error,
       ..Default::default()
     });
 
diff --git a/runtime/worker.rs b/runtime/worker.rs
index c0d839166..02749e7c1 100644
--- a/runtime/worker.rs
+++ b/runtime/worker.rs
@@ -477,14 +477,6 @@ impl MainWorker {
       }
     });
 
-    let import_assertions_support = if options.bootstrap.future {
-      deno_core::ImportAssertionsSupport::Error
-    } else {
-      deno_core::ImportAssertionsSupport::CustomCallback(Box::new(
-        crate::shared::import_assertion_callback,
-      ))
-    };
-
     let mut js_runtime = JsRuntime::new(RuntimeOptions {
       module_loader: Some(options.module_loader.clone()),
       startup_snapshot: options.startup_snapshot,
@@ -510,7 +502,7 @@ impl MainWorker {
       validate_import_attributes_cb: Some(Box::new(
         validate_import_attributes_callback,
       )),
-      import_assertions_support,
+      import_assertions_support: deno_core::ImportAssertionsSupport::Error,
       eval_context_code_cache_cbs: options.v8_code_cache.map(|cache| {
         let cache_clone = cache.clone();
         (
diff --git a/runtime/worker_bootstrap.rs b/runtime/worker_bootstrap.rs
index b6ede466e..b137efae2 100644
--- a/runtime/worker_bootstrap.rs
+++ b/runtime/worker_bootstrap.rs
@@ -116,7 +116,6 @@ pub struct BootstrapOptions {
   pub argv0: Option<String>,
   pub node_debug: Option<String>,
   pub node_ipc_fd: Option<i64>,
-  pub future: bool,
   pub mode: WorkerExecutionMode,
   // Used by `deno serve`
   pub serve_port: Option<u16>,
@@ -153,7 +152,6 @@ impl Default for BootstrapOptions {
       argv0: None,
       node_debug: None,
       node_ipc_fd: None,
-      future: false,
       mode: WorkerExecutionMode::None,
       serve_port: Default::default(),
       serve_host: Default::default(),
@@ -190,8 +188,6 @@ struct BootstrapV8<'a>(
   Option<&'a str>,
   // node_debug
   Option<&'a str>,
-  // future
-  bool,
   // mode
   i32,
   // serve port
@@ -224,7 +220,6 @@ impl BootstrapOptions {
       self.has_node_modules_dir,
       self.argv0.as_deref(),
       self.node_debug.as_deref(),
-      self.future,
       self.mode.discriminant() as _,
       self.serve_port.unwrap_or_default(),
       self.serve_host.as_deref(),