refactor: remove custom `utc_now` in favor of `chrono::Utc:now` feature (#23888)

This PR removes the use of the custom `utc_now` function in favor of the
`chrono` implementation. It resolves #22864.

---------

Co-authored-by: Bartek Iwańczuk <biwanczuk@gmail.com>

14 files changed, 15 insertions, 73 deletions

diff --git a/cli/Cargo.toml b/cli/Cargo.toml
index 9c8c4f6bd..c2edd2b60 100644
--- a/cli/Cargo.toml
+++ b/cli/Cargo.toml
@@ -86,7 +86,7 @@ base64.workspace = true
 bincode = "=1.3.3"
 bytes.workspace = true
 cache_control.workspace = true
-chrono.workspace = true
+chrono = { workspace = true, features = ["now"] }
 clap = { version = "=4.4.17", features = ["env", "string"] }
 clap_complete = "=4.4.7"
 clap_complete_fig = "=4.4.2"
diff --git a/cli/bench/main.rs b/cli/bench/main.rs
index 8f0627558..cfbc44e8c 100644
--- a/cli/bench/main.rs
+++ b/cli/bench/main.rs
@@ -17,8 +17,6 @@ use std::process::Stdio;
 use std::time::SystemTime;
 use test_util::PathRef;
 
-include!("../util/time.rs");
-
 mod http;
 mod lsp;
 
@@ -442,7 +440,8 @@ async fn main() -> Result<()> {
   env::set_current_dir(test_util::root_path())?;
 
   let mut new_data = BenchResult {
-    created_at: utc_now().to_rfc3339_opts(chrono::SecondsFormat::Secs, true),
+    created_at: chrono::Utc::now()
+      .to_rfc3339_opts(chrono::SecondsFormat::Secs, true),
     sha1: test_util::run_collect(
       &["git", "rev-parse", "HEAD"],
       None,
diff --git a/cli/tools/coverage/reporter.rs b/cli/tools/coverage/reporter.rs
index f359755a9..4bb72b264 100644
--- a/cli/tools/coverage/reporter.rs
+++ b/cli/tools/coverage/reporter.rs
@@ -399,7 +399,7 @@ impl CoverageReporter for HtmlCoverageReporter {
 
   fn done(&mut self, coverage_root: &Path) {
     let summary = self.collect_summary(&self.file_reports);
-    let now = crate::util::time::utc_now().to_rfc2822();
+    let now = chrono::Utc::now().to_rfc2822();
 
     for (node, stats) in &summary {
       let report_path =
diff --git a/cli/tools/upgrade.rs b/cli/tools/upgrade.rs
index 073ebdc1c..8379c6fd2 100644
--- a/cli/tools/upgrade.rs
+++ b/cli/tools/upgrade.rs
@@ -10,7 +10,6 @@ use crate::http_util::HttpClient;
 use crate::standalone::binary::unpack_into_dir;
 use crate::util::progress_bar::ProgressBar;
 use crate::util::progress_bar::ProgressBarStyle;
-use crate::util::time;
 use crate::version;
 
 use async_trait::async_trait;
@@ -60,7 +59,7 @@ impl RealUpdateCheckerEnvironment {
     Self {
       cache_file_path,
       // cache the current time
-      current_time: time::utc_now(),
+      current_time: chrono::Utc::now(),
     }
   }
 }
@@ -785,7 +784,7 @@ mod test {
         current_version: Default::default(),
         is_canary: Default::default(),
         latest_version: Rc::new(RefCell::new(Ok("".to_string()))),
-        time: Rc::new(RefCell::new(crate::util::time::utc_now())),
+        time: Rc::new(RefCell::new(chrono::Utc::now())),
       }
     }
 
diff --git a/cli/util/mod.rs b/cli/util/mod.rs
index c8155dc51..89df7bb98 100644
--- a/cli/util/mod.rs
+++ b/cli/util/mod.rs
@@ -15,7 +15,6 @@ pub mod progress_bar;
 pub mod result;
 pub mod sync;
 pub mod text_encoding;
-pub mod time;
 pub mod unix;
 pub mod v8;
 pub mod windows;
diff --git a/cli/util/time.rs b/cli/util/time.rs
deleted file mode 100644
index 47306c126..000000000
--- a/cli/util/time.rs
+++ /dev/null
@@ -1,19 +0,0 @@
-// Copyright 2018-2024 the Deno authors. All rights reserved. MIT license.
-
-/// Identical to chrono::Utc::now() but without the system "clock"
-/// feature flag.
-///
-/// The "clock" feature flag pulls in the "iana-time-zone" crate
-/// which links to macOS's "CoreFoundation" framework which increases
-/// startup time for the CLI.
-///
-/// You can simply include this file in your project using
-/// `include!("path/to/cli/util/time.rs"))` and use it
-/// as a drop-in replacement for chrono::Utc::now().
-pub fn utc_now() -> chrono::DateTime<chrono::Utc> {
-  let now = std::time::SystemTime::now()
-    .duration_since(std::time::UNIX_EPOCH)
-    .expect("system time before Unix epoch");
-  chrono::DateTime::from_timestamp(now.as_secs() as i64, now.subsec_nanos())
-    .unwrap()
-}
diff --git a/ext/cron/lib.rs b/ext/cron/lib.rs
index 4f4d0e05c..a0f1c44e1 100644
--- a/ext/cron/lib.rs
+++ b/ext/cron/lib.rs
@@ -2,7 +2,6 @@
 
 mod interface;
 pub mod local;
-mod time;
 
 use std::borrow::Cow;
 use std::cell::RefCell;
diff --git a/ext/cron/local.rs b/ext/cron/local.rs
index 945df0796..dd60e750a 100644
--- a/ext/cron/local.rs
+++ b/ext/cron/local.rs
@@ -91,7 +91,7 @@ impl LocalCronHandler {
         .copied();
 
       let sleep_fut = if let Some(earliest_deadline) = earliest_deadline {
-        let now = crate::time::utc_now().timestamp_millis() as u64;
+        let now = chrono::Utc::now().timestamp_millis() as u64;
         if let Some(delta) = earliest_deadline.checked_sub(now) {
           tokio::time::sleep(std::time::Duration::from_millis(delta)).boxed()
         } else {
@@ -121,7 +121,7 @@ impl LocalCronHandler {
           {
             let backoff_ms =
               backoff_schedule[cron.current_execution_retries as usize];
-            let now = crate::time::utc_now().timestamp_millis() as u64;
+            let now = chrono::Utc::now().timestamp_millis() as u64;
             cron.current_execution_retries += 1;
             now + backoff_ms as u64
           } else {
@@ -155,7 +155,7 @@ impl RuntimeState {
   fn get_ready_crons(
     &mut self,
   ) -> Result<Vec<(String, WeakSender<()>)>, AnyError> {
-    let now = crate::time::utc_now().timestamp_millis() as u64;
+    let now = chrono::Utc::now().timestamp_millis() as u64;
 
     let ready = {
       let to_remove = self
@@ -301,7 +301,7 @@ impl CronHandle for CronExecutionHandle {
 }
 
 fn compute_next_deadline(cron_expression: &str) -> Result<u64, AnyError> {
-  let now = crate::time::utc_now();
+  let now = chrono::Utc::now();
 
   if let Ok(test_schedule) = env::var("DENO_CRON_TEST_SCHEDULE_OFFSET") {
     if let Ok(offset) = test_schedule.parse::<u64>() {
@@ -334,7 +334,7 @@ mod tests {
 
   #[test]
   fn test_compute_next_deadline() {
-    let now = crate::time::utc_now().timestamp_millis() as u64;
+    let now = chrono::Utc::now().timestamp_millis() as u64;
     assert!(compute_next_deadline("*/1 * * * *").unwrap() > now);
     assert!(compute_next_deadline("* * * * *").unwrap() > now);
     assert!(compute_next_deadline("bogus").is_err());
diff --git a/ext/cron/time.rs b/ext/cron/time.rs
deleted file mode 100644
index 3a5565332..000000000
--- a/ext/cron/time.rs
+++ /dev/null
@@ -1,15 +0,0 @@
-// Copyright 2018-2024 the Deno authors. All rights reserved. MIT license.
-
-/// Identical to chrono::Utc::now() but without the system "clock"
-/// feature flag.
-///
-/// The "clock" feature flag pulls in the "iana-time-zone" crate
-/// which links to macOS's "CoreFoundation" framework which increases
-/// startup time for the CLI.
-pub fn utc_now() -> chrono::DateTime<chrono::Utc> {
-  let now = std::time::SystemTime::now()
-    .duration_since(std::time::UNIX_EPOCH)
-    .expect("system time before Unix epoch");
-  chrono::DateTime::from_timestamp(now.as_secs() as i64, now.subsec_nanos())
-    .unwrap()
-}
diff --git a/ext/kv/Cargo.toml b/ext/kv/Cargo.toml
index 12a0e2c90..7349d5841 100644
--- a/ext/kv/Cargo.toml
+++ b/ext/kv/Cargo.toml
@@ -17,7 +17,7 @@ path = "lib.rs"
 anyhow.workspace = true
 async-trait.workspace = true
 base64.workspace = true
-chrono.workspace = true
+chrono = { workspace = true, features = ["now"] }
 deno_core.workspace = true
 deno_fetch.workspace = true
 deno_node.workspace = true
diff --git a/ext/kv/lib.rs b/ext/kv/lib.rs
index 72e1cab30..285614389 100644
--- a/ext/kv/lib.rs
+++ b/ext/kv/lib.rs
@@ -4,7 +4,6 @@ pub mod dynamic;
 mod interface;
 pub mod remote;
 pub mod sqlite;
-mod time;
 
 use std::borrow::Cow;
 use std::cell::RefCell;
@@ -56,7 +55,6 @@ use denokv_proto::WatchStream;
 use log::debug;
 use serde::Deserialize;
 use serde::Serialize;
-use time::utc_now;
 
 pub use crate::interface::*;
 
@@ -772,7 +770,7 @@ async fn op_kv_atomic_write<DBH>(
 where
   DBH: DatabaseHandler + 'static,
 {
-  let current_timestamp = utc_now();
+  let current_timestamp = chrono::Utc::now();
   let db = {
     let state = state.borrow();
     let resource =
diff --git a/ext/kv/time.rs b/ext/kv/time.rs
deleted file mode 100644
index 3a5565332..000000000
--- a/ext/kv/time.rs
+++ /dev/null
@@ -1,15 +0,0 @@
-// Copyright 2018-2024 the Deno authors. All rights reserved. MIT license.
-
-/// Identical to chrono::Utc::now() but without the system "clock"
-/// feature flag.
-///
-/// The "clock" feature flag pulls in the "iana-time-zone" crate
-/// which links to macOS's "CoreFoundation" framework which increases
-/// startup time for the CLI.
-pub fn utc_now() -> chrono::DateTime<chrono::Utc> {
-  let now = std::time::SystemTime::now()
-    .duration_since(std::time::UNIX_EPOCH)
-    .expect("system time before Unix epoch");
-  chrono::DateTime::from_timestamp(now.as_secs() as i64, now.subsec_nanos())
-    .unwrap()
-}
diff --git a/tests/Cargo.toml b/tests/Cargo.toml
index af220aae7..4b8db9564 100644
--- a/tests/Cargo.toml
+++ b/tests/Cargo.toml
@@ -33,7 +33,7 @@ required-features = ["run"]
 
 [dev-dependencies]
 bytes.workspace = true
-chrono.workspace = true
+chrono = { workspace = true, features = ["now"] }
 deno_ast.workspace = true
 deno_bench_util.workspace = true
 deno_cache_dir = { workspace = true }
diff --git a/tests/integration/jupyter_tests.rs b/tests/integration/jupyter_tests.rs
index c7b2712e8..e0733d5a3 100644
--- a/tests/integration/jupyter_tests.rs
+++ b/tests/integration/jupyter_tests.rs
@@ -25,9 +25,6 @@ use zeromq::SocketRecv;
 use zeromq::SocketSend;
 use zeromq::ZmqMessage;
 
-// for the `utc_now` function
-include!("../../cli/util/time.rs");
-
 /// Jupyter connection file format
 #[derive(Serialize)]
 struct ConnectionSpec {
@@ -138,7 +135,7 @@ impl Default for MsgHeader {
     Self {
       msg_id: Uuid::new_v4(),
       session: Uuid::new_v4(),
-      date: utc_now(),
+      date: chrono::Utc::now(),
       username: "test".into(),
       msg_type: "kernel_info_request".into(),
       version: "5.3".into(),