fix: check native source correctly

HerrCai0907 · HerrCai0907 · commit 65f75ec5ca7d · 2025-12-27T09:10:37.000+08:00
native code's internal path is ~lib/native.ts instead of ~lib.
However, it is more easier to check current source is same as static
_native field.
diff --git a/src/ast.ts b/src/ast.ts
@@ -1668,7 +1668,7 @@ export class Source extends Node {
 
   /** Checks if this source represents native code. */
   get isNative(): bool {
-    return this.internalPath == LIBRARY_SUBST;
+    return this == Source._native;
   }
 
   /** Checks if this source is part of the (standard) library. */

Original file line number	Diff line number	Diff line change
`@@ -1668,7 +1668,7 @@ export class Source extends Node {`
`1668`	`1668`
`1669`	`1669`	`/** Checks if this source represents native code. */`
`1670`	`1670`	`get isNative(): bool {`
`1671`		`- return this.internalPath == LIBRARY_SUBST;`
	`1671`	`+ return this == Source._native;`
`1672`	`1672`	`}`
`1673`	`1673`
`1674`	`1674`	`/** Checks if this source is part of the (standard) library. */`