perf(ext/console): avoid `wrapConsole` when not inspecting (#15931)

8 files changed, 21 insertions, 2 deletions

diff --git a/cli/bench/console.js b/cli/bench/console.js
new file mode 100644
index 000000000..b1873953c
--- /dev/null
+++ b/cli/bench/console.js
@@ -0,0 +1,8 @@
+// Copyright 2018-2022 the Deno authors. All rights reserved. MIT license.
+const count = 100000;
+
+const start = Date.now();
+for (let i = 0; i < count; i++) console.log("Hello World");
+const elapsed = Date.now() - start;
+const rate = Math.floor(count / (elapsed / 1000));
+console.log(`time ${elapsed} ms rate ${rate}`);
diff --git a/cli/standalone.rs b/cli/standalone.rs
index fa5fffd13..65a51fde5 100644
--- a/cli/standalone.rs
+++ b/cli/standalone.rs
@@ -283,6 +283,7 @@ pub async fn run(
       ts_version: version::TYPESCRIPT.to_string(),
       unstable: metadata.unstable,
       user_agent: version::get_user_agent(),
+      inspect: ps.options.is_inspecting(),
     },
     extensions: ops::cli_exts(ps.clone()),
     unsafely_ignore_certificate_errors: metadata
diff --git a/cli/tests/testdata/event_listener_error_immediate_exit.ts.out b/cli/tests/testdata/event_listener_error_immediate_exit.ts.out
index 8f03f71b8..1fb3ce76a 100644
--- a/cli/tests/testdata/event_listener_error_immediate_exit.ts.out
+++ b/cli/tests/testdata/event_listener_error_immediate_exit.ts.out
@@ -1,4 +1,5 @@
 1
+queueMicrotask
 error: Uncaught Error: bar
   throw new Error("bar");
         ^
diff --git a/cli/worker.rs b/cli/worker.rs
index 9b505e4f0..f46c2efce 100644
--- a/cli/worker.rs
+++ b/cli/worker.rs
@@ -410,6 +410,7 @@ pub async fn create_main_worker(
       ts_version: version::TYPESCRIPT.to_string(),
       unstable: ps.options.unstable(),
       user_agent: version::get_user_agent(),
+      inspect: ps.options.is_inspecting(),
     },
     extensions,
     unsafely_ignore_certificate_errors: ps
@@ -515,6 +516,7 @@ fn create_web_worker_callback(
         ts_version: version::TYPESCRIPT.to_string(),
         unstable: ps.options.unstable(),
         user_agent: version::get_user_agent(),
+        inspect: ps.options.is_inspecting(),
       },
       extensions,
       unsafely_ignore_certificate_errors: ps
diff --git a/runtime/examples/hello_runtime.rs b/runtime/examples/hello_runtime.rs
index d941cdd05..de5c2427d 100644
--- a/runtime/examples/hello_runtime.rs
+++ b/runtime/examples/hello_runtime.rs
@@ -39,6 +39,7 @@ async fn main() -> Result<(), AnyError> {
       ts_version: "x".to_string(),
       unstable: false,
       user_agent: "hello_runtime".to_string(),
+      inspect: false,
     },
     extensions: vec![],
     unsafely_ignore_certificate_errors: None,
diff --git a/runtime/js/99_main.js b/runtime/js/99_main.js
index b25022a08..27dc7111a 100644
--- a/runtime/js/99_main.js
+++ b/runtime/js/99_main.js
@@ -648,6 +648,7 @@ delete Intl.v8BreakIterator;
       ppid,
       unstableFlag,
       cpuCount,
+      inspectFlag,
       userAgent: userAgentInfo,
     } = runtimeOptions;
 
@@ -679,8 +680,10 @@ delete Intl.v8BreakIterator;
     ObjectDefineProperties(globalThis, mainRuntimeGlobalProperties);
     ObjectSetPrototypeOf(globalThis, Window.prototype);
 
-    const consoleFromDeno = globalThis.console;
-    wrapConsole(consoleFromDeno, consoleFromV8);
+    if (inspectFlag) {
+      const consoleFromDeno = globalThis.console;
+      wrapConsole(consoleFromDeno, consoleFromV8);
+    }
 
     eventTarget.setEventTargetData(globalThis);
 
diff --git a/runtime/worker.rs b/runtime/worker.rs
index bce30b88e..82b6a589e 100644
--- a/runtime/worker.rs
+++ b/runtime/worker.rs
@@ -511,6 +511,7 @@ mod tests {
         ts_version: "x".to_string(),
         unstable: false,
         user_agent: "x".to_string(),
+        inspect: false,
       },
       extensions: vec![],
       unsafely_ignore_certificate_errors: None,
diff --git a/runtime/worker_bootstrap.rs b/runtime/worker_bootstrap.rs
index 68f223be5..31e7c4382 100644
--- a/runtime/worker_bootstrap.rs
+++ b/runtime/worker_bootstrap.rs
@@ -21,6 +21,7 @@ pub struct BootstrapOptions {
   pub ts_version: String,
   pub unstable: bool,
   pub user_agent: String,
+  pub inspect: bool,
 }
 
 impl BootstrapOptions {
@@ -44,6 +45,7 @@ impl BootstrapOptions {
       "target": env!("TARGET"),
       "v8Version": deno_core::v8_version(),
       "userAgent": self.user_agent,
+      "inspectFlag": self.inspect,
     });
     serde_json::to_string_pretty(&payload).unwrap()
   }