fix(es/codegen): Improve EndsWithAlphaNum (#9675)

**Description:**

This PR makes EndsWithAlphaNum smarter, improving codegen of in/instanceof binary expressions, and for in/of heads. For example:

Before: 
```js
foo() in b;
```
After:
```js
foo()in b;
```

---------

Co-authored-by: Donny/강동윤 <kdy1997.dev@gmail.com>

Author: CamWass

.changeset/silly-wolves-suffer.md

@@ -0,0 +1,6 @@
+---
+swc_core: patch
+swc_ecma_minifier: patch
+---
+
+fix(es/codegen): Improve EndsWithAlphaNum

crates/swc_ecma_codegen/src/expr.rs

@@ -65,6 +65,18 @@ mod tests {
         assert_min("2 >>> 2", "2>>>2");
         assert_min("foo in bar", "foo in bar");
         assert_min("foo instanceof Foo", "foo instanceof Foo");
+
+        assert_min("foo() in b", "foo()in b");
+        assert_min("typeof foo() in b", "typeof foo()in b");
+        assert_min("`` in b", "``in b");
+        assert_min("a?.foo() in b", "a?.foo()in b");
+        assert_min("++a[1] in b", "++a[1]in b");
+        assert_min("a++ in foo", "a++in foo");
+        assert_min("``+`` in b", "``+``in b");
+        assert_min("new Foo(a) in b", "new Foo(a)in b");
+
+        assert_min("new Foo() in b", "new Foo in b");
+        assert_min("++a in b", "++a in b");
     }
 
     #[test]

crates/swc_ecma_codegen/src/util.rs

@@ -52,17 +52,36 @@ impl EndsWithAlphaNum for UsingDecl {
 
 impl EndsWithAlphaNum for Expr {
     fn ends_with_alpha_num(&self) -> bool {
-        !matches!(
-            self,
+        match self {
             Expr::Array(..)
-                | Expr::Object(..)
-                | Expr::Lit(Lit::Str(..))
-                | Expr::Paren(..)
-                | Expr::Member(MemberExpr {
-                    prop: MemberProp::Computed(..),
-                    ..
-                })
-        )
+            | Expr::Object(..)
+            | Expr::Lit(Lit::Str(..))
+            | Expr::Paren(..)
+            | Expr::Member(MemberExpr {
+                prop: MemberProp::Computed(..),
+                ..
+            })
+            | Expr::Tpl(..)
+            | Expr::TaggedTpl(..)
+            | Expr::Call(..) => false,
+
+            Expr::Unary(n) => n.arg.ends_with_alpha_num(),
+
+            Expr::Update(n) => n.prefix && n.arg.ends_with_alpha_num(),
+
+            Expr::OptChain(n) => match n.base.as_ref() {
+                OptChainBase::Member(base) => base.prop.is_computed(),
+                OptChainBase::Call(_) => false,
+            },
+
+            Expr::Bin(n) => n.right.ends_with_alpha_num(),
+
+            Expr::New(NewExpr {
+                args: Some(args), ..
+            }) => args.is_empty(),
+
+            _ => true,
+        }
     }
 }