From 3a494ef408208320c831ef4969913db4afc57c34 Mon Sep 17 00:00:00 2001
From: Anton Evzhakov <anton@evz.name>
Date: Fri, 9 Feb 2024 14:34:29 +0200
Subject: [PATCH] feat(transform): replace object spread with Proxy in
 getTagProcessor (#57)

* feat(transform): replace object spread with Proxy in getTagProcessor

* fix(transform): revert babel.compact
---
 .changeset/stale-stingrays-judge.md             |  5 +++++
 packages/transform/src/utils/getTagProcessor.ts | 15 +++++++++++++--
 2 files changed, 18 insertions(+), 2 deletions(-)
 create mode 100644 .changeset/stale-stingrays-judge.md

diff --git a/.changeset/stale-stingrays-judge.md b/.changeset/stale-stingrays-judge.md
new file mode 100644
index 00000000..9effe606
--- /dev/null
+++ b/.changeset/stale-stingrays-judge.md
@@ -0,0 +1,5 @@
+---
+'@wyw-in-js/transform': patch
+---
+
+Found out that an object spread can be extremely slow. getTagProcessor now works 10 times faster.
diff --git a/packages/transform/src/utils/getTagProcessor.ts b/packages/transform/src/utils/getTagProcessor.ts
index e5d0bfe6..3658034f 100644
--- a/packages/transform/src/utils/getTagProcessor.ts
+++ b/packages/transform/src/utils/getTagProcessor.ts
@@ -315,8 +315,7 @@ function getBuilderForIdentifier(
     });
   };
 
-  const astService = {
-    ...t,
+  const importHelpers = {
     addDefaultImport: (importedSource: string, nameHint?: string) =>
       addDefault(path, importedSource, { nameHint }),
     addNamedImport: (
@@ -326,6 +325,18 @@ function getBuilderForIdentifier(
     ) => addNamed(path, name, importedSource, { nameHint }),
   };
 
+  type AstService = typeof t & typeof importHelpers;
+
+  const astService = new Proxy<AstService>(t as AstService, {
+    get(target, prop, receiver) {
+      if (prop in importHelpers) {
+        return importHelpers[prop as keyof typeof importHelpers];
+      }
+
+      return Reflect.get(target, prop, receiver);
+    },
+  });
+
   return (...args: BuilderArgs) =>
     new Processor(
       params,