feat: add support for weakmap et weakset

lib/index.d.ts

@@ -8,3 +8,4 @@ declare const deepFreeze: DeepFreezeExport;
 
 export = deepFreeze;
 export as namespace deepFreeze;
+export { deepFreeze };

lib/index.js

@@ -15,6 +15,14 @@ export function deepFreeze(obj) {
         function () {
           throw new Error("set is read-only");
         };
+  } else if (obj instanceof WeakSet) {
+    obj.add = obj.delete = function () {
+      throw new Error("WeakSet is read-only");
+    };
+  } else if (obj instanceof WeakMap) {
+    obj.set = obj.delete = function () {
+      throw new Error("WeakMap is read-only");
+    };
   }
 
   // Freeze self

lib/index.test.js

@@ -39,6 +39,30 @@ test("freeze set", () => {
   );
 });
 
+test("freeze WeekSet", () => {
+  const obj = deepFreeze({
+    weakSet: new WeakSet([{}, {}]),
+  });
+  assert.throws(
+    () => {
+      obj.weakSet.add({});
+    },
+    { message: "WeakSet is read-only" },
+  );
+});
+
+test("freeze WeekMap", () => {
+  const obj = deepFreeze({
+    weakMap: new WeakMap([[{}, {}]]),
+  });
+  assert.throws(
+    () => {
+      obj.weakMap.set({}, {});
+    },
+    { message: "WeakMap is read-only" },
+  );
+});
+
 test("freeze function", () => {
   const mockFn = function () {};
 
@@ -48,6 +72,7 @@ test("freeze function", () => {
 
   assert.throws(
     () => {
+      // @ts-ignore
       obj.fn.something = "";
     },
     { message: "Cannot add property something, object is not extensible" },

package.json

@@ -54,7 +54,9 @@
       "@pob/commitlint-config"
     ]
   },
-  "pob": {},
+  "pob": {
+    "typescript": "check-only"
+  },
   "prettier": "@pob/root/prettier-config",
   "devDependencies": {
     "@pob/commitlint-config": "7.0.0",

tsconfig.json

@@ -0,0 +1,12 @@
+{
+  "extends": [
+    "@pob/root/tsconfigs/base.json",
+    "@pob/root/tsconfigs/targets/node-18.json"
+  ],
+  "compilerOptions": {
+    "allowJs": true,
+    "checkJs": true,
+    "noEmit": true
+  },
+  "include": ["lib/**/*.js"]
+}