feat: blocking debug calling with Function.prototype.call

Author: piquark6046

sources/src/index.ts

@@ -0,0 +1,29 @@
+type unsafeWindow = typeof window
+// eslint-disable-next-line @typescript-eslint/naming-convention
+declare const unsafeWindow: unsafeWindow
+
+const Win = typeof unsafeWindow !== 'undefined' ? unsafeWindow : window
+
+const ProtectedFunctionStrings = ['toString', 'apply']
+
+Win.Function.prototype.toString = new Proxy(Win.Function.prototype.toString, {
+  // eslint-disable-next-line @typescript-eslint/no-unsafe-function-type
+  apply(Target: () => string, ThisArg: Function, Args: null) {
+    if (ProtectedFunctionStrings.includes(ThisArg.name)) {
+      return `function ${ThisArg.name}() { [native code] }`
+    } else {
+      return Reflect.apply(Target, ThisArg, Args)
+    }
+  }
+})
+
+Win.Function.prototype.apply = new Proxy(Win.Function.prototype.apply, {
+  // eslint-disable-next-line @typescript-eslint/no-unsafe-function-type
+  apply(Target: typeof Function.prototype.apply, ThisArg: Function, Args: unknown[]) {
+    if (Args.toString().includes('debug,')) {
+      throw new Error()
+    }
+
+    return Reflect.apply(Target, ThisArg, Args)
+  }
+})