1 files changed, 12 insertions, 7 deletions
diff --git a/cli/build.rs b/cli/build.rs
index 7d131de86..327b75f0a 100644
--- a/cli/build.rs
+++ b/cli/build.rs
@@ -3,7 +3,6 @@
 use deno_core::error::custom_error;
 use deno_core::op_sync;
 use deno_core::serde::Deserialize;
-use deno_core::serde_json;
 use deno_core::serde_json::json;
 use deno_core::serde_json::Value;
 use deno_core::JsRuntime;
@@ -122,6 +121,7 @@ fn create_compiler_snapshot(
     "es2020.string",
     "es2020.symbol.wellknown",
     "es2021",
+    "es2021.intl",
     "es2021.promise",
     "es2021.string",
     "es2021.weakref",
@@ -168,14 +168,19 @@ fn create_compiler_snapshot(
     "op_cwd",
     op_sync(move |_state, _args: Value, _: ()| Ok(json!("cache:///"))),
   );
+  // As of TypeScript 4.5, it tries to detect the existence of substitute lib
+  // files, which we currently don't use, so we just return false.
+  js_runtime.register_op(
+    "op_exists",
+    op_sync(move |_state, _args: LoadArgs, _: ()| Ok(json!(false))),
+  );
   // using the same op that is used in `tsc.rs` for loading modules and reading
   // files, but a slightly different implementation at build time.
   js_runtime.register_op(
     "op_load",
-    op_sync(move |_state, args, _: ()| {
-      let v: LoadArgs = serde_json::from_value(args)?;
+    op_sync(move |_state, args: LoadArgs, _: ()| {
       // we need a basic file to send to tsc to warm it up.
-      if v.specifier == build_specifier {
+      if args.specifier == build_specifier {
         Ok(json!({
           "data": r#"console.log("hello deno!");"#,
           "hash": "1",
@@ -184,7 +189,7 @@ fn create_compiler_snapshot(
         }))
       // specifiers come across as `asset:///lib.{lib_name}.d.ts` and we need to
       // parse out just the name so we can lookup the asset.
-      } else if let Some(caps) = re_asset.captures(&v.specifier) {
+      } else if let Some(caps) = re_asset.captures(&args.specifier) {
         if let Some(lib) = caps.get(1).map(|m| m.as_str()) {
           // if it comes from an op crate, we were supplied with the path to the
           // file.
@@ -204,13 +209,13 @@ fn create_compiler_snapshot(
         } else {
           Err(custom_error(
             "InvalidSpecifier",
-            format!("An invalid specifier was requested: {}", v.specifier),
+            format!("An invalid specifier was requested: {}", args.specifier),
           ))
         }
       } else {
         Err(custom_error(
           "InvalidSpecifier",
-          format!("An invalid specifier was requested: {}", v.specifier),
+          format!("An invalid specifier was requested: {}", args.specifier),
         ))
       }
     }),