feat(core) deno_core::extension! macro to simplify extension registration (#18210)

This implements two macros to simplify extension registration and centralize a lot of the boilerplate as a base for future improvements:

* `deno_core::ops!` registers a block of `#[op]`s, optionally with type
parameters, useful for places where we share lists of ops
* `deno_core::extension!` is used to register an extension, and creates
two methods that can be used at runtime/snapshot generation time:
`init_ops` and `init_ops_and_esm`.

---------

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

1 files changed, 2 insertions, 5 deletions

diff --git a/core/modules.rs b/core/modules.rs
index e03f86c01..ddd55199b 100644
--- a/core/modules.rs
+++ b/core/modules.rs
@@ -1649,7 +1649,6 @@ impl ModuleMap {
 #[cfg(test)]
 mod tests {
   use super::*;
-  use crate::Extension;
   use crate::JsRuntime;
   use crate::RuntimeOptions;
   use crate::Snapshot;
@@ -1990,12 +1989,10 @@ import "/a.js";
       43
     }
 
-    let ext = Extension::builder("test_ext")
-      .ops(vec![op_test::decl()])
-      .build();
+    deno_core::extension!(test_ext, ops = [op_test]);
 
     let mut runtime = JsRuntime::new(RuntimeOptions {
-      extensions: vec![ext],
+      extensions: vec![test_ext::init_ops()],
       module_loader: Some(loader),
       ..Default::default()
     });