From f9007d3386bbe9f709ce413ac0cf099b86d4c4bf Mon Sep 17 00:00:00 2001
From: snek <snek@deno.com>
Date: Tue, 10 Sep 2024 13:12:36 -0700
Subject: feat: require(esm) (#25501)

implement require(esm) using `op_import_sync` from deno_core.

possible future changes:
- cts and mts
- replace Deno.core.evalContext to optimize esm syntax detection

Fixes: https://github.com/denoland/deno/issues/25487
---
 ext/node/ops/require.rs | 27 +++++++++++++++++++++++++++
 1 file changed, 27 insertions(+)

(limited to 'ext/node/ops/require.rs')

diff --git a/ext/node/ops/require.rs b/ext/node/ops/require.rs
index 4f88c1913..3578719d0 100644
--- a/ext/node/ops/require.rs
+++ b/ext/node/ops/require.rs
@@ -6,6 +6,7 @@ use deno_core::error::AnyError;
 use deno_core::normalize_path;
 use deno_core::op2;
 use deno_core::url::Url;
+use deno_core::v8;
 use deno_core::JsRuntimeInspector;
 use deno_core::ModuleSpecifier;
 use deno_core::OpState;
@@ -614,3 +615,29 @@ fn url_to_file_path(url: &Url) -> Result<PathBuf, AnyError> {
     }
   }
 }
+
+#[op2(fast)]
+pub fn op_require_can_parse_as_esm(
+  scope: &mut v8::HandleScope,
+  #[string] source: &str,
+) -> bool {
+  let scope = &mut v8::TryCatch::new(scope);
+  let Some(source) = v8::String::new(scope, source) else {
+    return false;
+  };
+  let origin = v8::ScriptOrigin::new(
+    scope,
+    source.into(),
+    0,
+    0,
+    false,
+    0,
+    None,
+    true,
+    false,
+    true,
+    None,
+  );
+  let mut source = v8::script_compiler::Source::new(source, Some(&origin));
+  v8::script_compiler::compile_module(scope, &mut source).is_some()
+}
-- 
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