build: add "include_js_files_for_snapshotting" Cargo feature (#17826)

This allows to not include source code into the binary (because
it will already be included in the V8 snapshot).

Nothing changes for the embedders - everything should still build the
same.

This commit brings the binary size from 87Mb to 82Mb on M1.

Alternative to https://github.com/denoland/deno/pull/17820 and
https://github.com/denoland/deno/pull/17653

---------

Co-authored-by: Leo Kettmeir <crowlkats@toaxl.com>

1 files changed, 9 insertions, 6 deletions

diff --git a/runtime/web_worker.rs b/runtime/web_worker.rs
index df75d79c1..bcf999b3b 100644
--- a/runtime/web_worker.rs
+++ b/runtime/web_worker.rs
@@ -1,7 +1,6 @@
 // Copyright 2018-2023 the Deno authors. All rights reserved. MIT license.
 use crate::colors;
 use crate::inspector_server::InspectorServer;
-use crate::js;
 use crate::ops;
 use crate::ops::io::Stdio;
 use crate::permissions::PermissionsContainer;
@@ -453,13 +452,17 @@ impl WebWorker {
     // Append exts
     extensions.extend(std::mem::take(&mut options.extensions));
 
+    #[cfg(not(feature = "dont_create_runtime_snapshot"))]
+    let startup_snapshot = options
+      .startup_snapshot
+      .unwrap_or_else(crate::js::deno_isolate_init);
+    #[cfg(feature = "dont_create_runtime_snapshot")]
+    let startup_snapshot = options.startup_snapshot
+      .expect("deno_runtime startup snapshot is not available with 'create_runtime_snapshot' Cargo feature.");
+
     let mut js_runtime = JsRuntime::new(RuntimeOptions {
       module_loader: Some(options.module_loader.clone()),
-      startup_snapshot: Some(
-        options
-          .startup_snapshot
-          .unwrap_or_else(js::deno_isolate_init),
-      ),
+      startup_snapshot: Some(startup_snapshot),
       source_map_getter: options.source_map_getter,
       get_error_class_fn: options.get_error_class_fn,
       shared_array_buffer_store: options.shared_array_buffer_store.clone(),