proxy-compare - npm Package Compare versions

Comparing version 2.2.0 to 2.3.0

CHANGELOG.md

@@ -5,2 +5,8 @@ # Change Log
 
+## [2.3.0] - 2022-08-13
+### Added
+- feat: support proxy-polyfill #41
+### Changed
+- fix: cache unfreeze results #44
+
 ## [2.2.0] - 2022-06-14
@@ -7,0 +13,0 @@ ### Added

dist/index.modern.js

@@ -1,2 +0,2 @@
-const e=Symbol(),t=Symbol(),r=Symbol(),n=Object.getPrototypeOf,o=new WeakMap,s=e=>e&&(o.has(e)?o.get(e):n(e)===Object.prototype||n(e)===Array.prototype),c=e=>"object"==typeof e&&null!==e,i=(n,o)=>{let s=!1;const c=(t,r,o)=>{if(!s){let s=t.a.get(n);s||(s=new Set,t.a.set(n,s)),o&&s.has(e)||s.add(r)}},i={f:o,get(e,t){return t===r?n:(c(this,t),l(e[t],this.a,this.c))},has(e,r){return r===t?(s=!0,this.a.delete(n),!0):(c(this,r),r in e)},getOwnPropertyDescriptor(e,t){return c(this,t,!0),Object.getOwnPropertyDescriptor(e,t)},ownKeys(t){return c(this,e),Reflect.ownKeys(t)}};return o&&(i.set=i.deleteProperty=()=>!1),i},a=e=>e[r]||e,l=(e,t,r)=>{if(!s(e))return e;const o=a(e),c=(e=>Object.isFrozen(e)||Object.values(Object.getOwnPropertyDescriptors(e)).some(e=>!e.writable))(o);let l=r&&r.get(o);return l&&l.f===c||(l=i(o,c),l.p=new Proxy(c?(e=>{if(Array.isArray(e))return Array.from(e);const t=Object.getOwnPropertyDescriptors(e);return Object.values(t).forEach(e=>{e.configurable=!0}),Object.create(n(e),t)})(o):o,l),r&&r.set(o,l)),l.a=t,l.c=r,l.p},u=(e,t)=>{const r=Reflect.ownKeys(e),n=Reflect.ownKeys(t);return r.length!==n.length||r.some((e,t)=>e!==n[t])},f=(t,r,n,o)=>{if(Object.is(t,r))return!1;if(!c(t)||!c(r))return!0;const s=n.get(a(t));if(!s)return!0;if(o){const e=o.get(t);if(e&&e.n===r)return e.g;o.set(t,{n:r,g:!1})}let i=null;for(const c of s){const s=c===e?u(t,r):f(t[c],r[c],n,o);if(!0!==s&&!1!==s||(i=s),i)break}return null===i&&(i=!0),o&&o.set(t,{n:r,g:i}),i},y=e=>!!s(e)&&t in e,p=e=>s(e)&&e[r]||null,g=(e,t=!0)=>{o.set(e,t)},b=(e,t)=>{const r=[],n=new WeakSet,o=(e,s)=>{if(n.has(e))return;c(e)&&n.add(e);const i=c(e)&&t.get(a(e));i?i.forEach(t=>{o(e[t],s?[...s,t]:[t])}):s&&r.push(s)};return o(e),r};export{b as affectedToPathList,l as createProxy,p as getUntracked,f as isChanged,g as markToTrack,y as trackMemo};
-//# sourceMappingURL=index.modern.js.map
+const e=Symbol(),t=Symbol(),r=Symbol();let n=(e,t)=>new Proxy(e,t);const o=Object.getPrototypeOf,s=new WeakMap,c=e=>e&&(s.has(e)?s.get(e):o(e)===Object.prototype||o(e)===Array.prototype),l=e=>"object"==typeof e&&null!==e,a=new WeakMap,f=e=>e[r]||e,i=(s,l,p)=>{if(!c(s))return s;const y=f(s),u=(e=>Object.isFrozen(e)||Object.values(Object.getOwnPropertyDescriptors(e)).some(e=>!e.writable))(y);let g=p&&p.get(y);return g&&g[1].f===u||(g=((n,o)=>{const s={f:o};let c=!1;const l=(t,r)=>{if(!c){let o=s.a.get(n);o||(o=new Set,s.a.set(n,o)),r&&o.has(e)||o.add(t)}},a={get:(e,t)=>t===r?n:(l(t),i(e[t],s.a,s.c)),has:(e,r)=>r===t?(c=!0,s.a.delete(n),!0):(l(r),r in e),getOwnPropertyDescriptor:(e,t)=>(l(t,!0),Object.getOwnPropertyDescriptor(e,t)),ownKeys:t=>(l(e),Reflect.ownKeys(t))};return o&&(a.set=a.deleteProperty=()=>!1),[a,s]})(y,u),g[1].p=n(u?(e=>{let t=a.get(e);if(!t){if(Array.isArray(e))t=Array.from(e);else{const r=Object.getOwnPropertyDescriptors(e);Object.values(r).forEach(e=>{e.configurable=!0}),t=Object.create(o(e),r)}a.set(e,t)}return t})(y):y,g[0]),p&&p.set(y,g)),g[1].a=l,g[1].c=p,g[1].p},p=(e,t)=>{const r=Reflect.ownKeys(e),n=Reflect.ownKeys(t);return r.length!==n.length||r.some((e,t)=>e!==n[t])},y=(t,r,n,o)=>{if(Object.is(t,r))return!1;if(!l(t)||!l(r))return!0;const s=n.get(f(t));if(!s)return!0;if(o){const e=o.get(t);if(e&&e.n===r)return e.g;o.set(t,{n:r,g:!1})}let c=null;for(const l of s){const s=l===e?p(t,r):y(t[l],r[l],n,o);if(!0!==s&&!1!==s||(c=s),c)break}return null===c&&(c=!0),o&&o.set(t,{n:r,g:c}),c},u=e=>!!c(e)&&t in e,g=e=>c(e)&&e[r]||null,b=(e,t=!0)=>{s.set(e,t)},O=(e,t)=>{const r=[],n=new WeakSet,o=(e,s)=>{if(n.has(e))return;l(e)&&n.add(e);const c=l(e)&&t.get(f(e));c?c.forEach(t=>{o(e[t],s?[...s,t]:[t])}):s&&r.push(s)};return o(e),r},w=e=>{n=e};export{O as affectedToPathList,i as createProxy,g as getUntracked,y as isChanged,b as markToTrack,w as replaceNewProxy,u as trackMemo};
+//# sourceMappingURL=index.modern.mjs.map

dist/index.umd.js

@@ -1,2 +0,2 @@
-!function(t,e){"object"==typeof exports&&"undefined"!=typeof module?e(exports):"function"==typeof define&&define.amd?define(["exports"],e):e((t||self).proxyCompare={})}(this,function(t){function e(t,e){(null==e||e>t.length)&&(e=t.length);for(var r=0,n=new Array(e);r<e;r++)n[r]=t[r];return n}var r=Symbol(),n=Symbol(),o=Symbol(),i=Object.getPrototypeOf,u=new WeakMap,a=function(t){return t&&(u.has(t)?u.get(t):i(t)===Object.prototype||i(t)===Array.prototype)},c=function(t){return"object"==typeof t&&null!==t},f=function(t){return t[o]||t},s=function(t,e,u){if(!a(t))return t;var c=f(t),l=function(t){return Object.isFrozen(t)||Object.values(Object.getOwnPropertyDescriptors(t)).some(function(t){return!t.writable})}(c),y=u&&u.get(c);return y&&y.f===l||((y=function(t,e){var i,u=!1,a=function(e,n,o){if(!u){var i=e.a.get(t);i||(i=new Set,e.a.set(t,i)),o&&i.has(r)||i.add(n)}},c=((i={}).f=e,i.get=function(e,r){return r===o?t:(a(this,r),s(e[r],this.a,this.c))},i.has=function(e,r){return r===n?(u=!0,this.a.delete(t),!0):(a(this,r),r in e)},i.getOwnPropertyDescriptor=function(t,e){return a(this,e,!0),Object.getOwnPropertyDescriptor(t,e)},i.ownKeys=function(t){return a(this,r),Reflect.ownKeys(t)},i);return e&&(c.set=c.deleteProperty=function(){return!1}),c}(c,l)).p=new Proxy(l?function(t){if(Array.isArray(t))return Array.from(t);var e=Object.getOwnPropertyDescriptors(t);return Object.values(e).forEach(function(t){t.configurable=!0}),Object.create(i(t),e)}(c):c,y),u&&u.set(c,y)),y.a=e,y.c=u,y.p},l=function(t,e){var r=Reflect.ownKeys(t),n=Reflect.ownKeys(e);return r.length!==n.length||r.some(function(t,e){return t!==n[e]})};t.affectedToPathList=function(t,e){var r=[],n=new WeakSet;return function t(o,i){if(!n.has(o)){c(o)&&n.add(o);var u=c(o)&&e.get(f(o));u?u.forEach(function(e){t(o[e],i?[].concat(i,[e]):[e])}):i&&r.push(i)}}(t),r},t.createProxy=s,t.getUntracked=function(t){return a(t)&&t[o]||null},t.isChanged=function t(n,o,i,u){if(Object.is(n,o))return!1;if(!c(n)||!c(o))return!0;var a=i.get(f(n));if(!a)return!0;if(u){var s,y=u.get(n);if(y&&y.n===o)return y.g;u.set(n,((s={}).n=o,s.g=!1,s))}for(var p,b,d=null,g=function(t,r){var n="undefined"!=typeof Symbol&&t[Symbol.iterator]||t["@@iterator"];if(n)return(n=n.call(t)).next.bind(n);if(Array.isArray(t)||(n=function(t,r){if(t){if("string"==typeof t)return e(t,r);var n=Object.prototype.toString.call(t).slice(8,-1);return"Object"===n&&t.constructor&&(n=t.constructor.name),"Map"===n||"Set"===n?Array.from(t):"Arguments"===n||/^(?:Ui|I)nt(?:8|16|32)(?:Clamped)?Array$/.test(n)?e(t,r):void 0}}(t))){n&&(t=n);var o=0;return function(){return o>=t.length?{done:!0}:{done:!1,value:t[o++]}}}throw new TypeError("Invalid attempt to iterate non-iterable instance.\nIn order to be iterable, non-array objects must have a [Symbol.iterator]() method.")}(a);!(p=g()).done;){var h=p.value,v=h===r?l(n,o):t(n[h],o[h],i,u);if(!0!==v&&!1!==v||(d=v),d)break}return null===d&&(d=!0),u&&u.set(n,((b={}).n=o,b.g=d,b)),d},t.markToTrack=function(t,e){void 0===e&&(e=!0),u.set(t,e)},t.trackMemo=function(t){return!!a(t)&&n in t}});
+!function(e,t){"object"==typeof exports&&"undefined"!=typeof module?t(exports):"function"==typeof define&&define.amd?define(["exports"],t):t((e||self).proxyCompare={})}(this,function(e){function t(e,t){(null==t||t>e.length)&&(t=e.length);for(var r=0,n=new Array(t);r<t;r++)n[r]=e[r];return n}var r=Symbol(),n=Symbol(),o=Symbol(),i=function(e,t){return new Proxy(e,t)},a=Object.getPrototypeOf,u=new WeakMap,c=function(e){return e&&(u.has(e)?u.get(e):a(e)===Object.prototype||a(e)===Array.prototype)},f=function(e){return"object"==typeof e&&null!==e},l=new WeakMap,s=function(e){return e[o]||e},y=function(e,t,u){if(!c(e))return e;var f=s(e),p=function(e){return Object.isFrozen(e)||Object.values(Object.getOwnPropertyDescriptors(e)).some(function(e){return!e.writable})}(f),b=u&&u.get(f);return b&&b[1].f===p||((b=function(e,t){var i,a=((i={}).f=t,i),u=!1,c=function(t,n){if(!u){var o=a.a.get(e);o||(o=new Set,a.a.set(e,o)),n&&o.has(r)||o.add(t)}},f={get:function(t,r){return r===o?e:(c(r),y(t[r],a.a,a.c))},has:function(t,r){return r===n?(u=!0,a.a.delete(e),!0):(c(r),r in t)},getOwnPropertyDescriptor:function(e,t){return c(t,!0),Object.getOwnPropertyDescriptor(e,t)},ownKeys:function(e){return c(r),Reflect.ownKeys(e)}};return t&&(f.set=f.deleteProperty=function(){return!1}),[f,a]}(f,p))[1].p=i(p?function(e){var t=l.get(e);if(!t){if(Array.isArray(e))t=Array.from(e);else{var r=Object.getOwnPropertyDescriptors(e);Object.values(r).forEach(function(e){e.configurable=!0}),t=Object.create(a(e),r)}l.set(e,t)}return t}(f):f,b[0]),u&&u.set(f,b)),b[1].a=t,b[1].c=u,b[1].p},p=function(e,t){var r=Reflect.ownKeys(e),n=Reflect.ownKeys(t);return r.length!==n.length||r.some(function(e,t){return e!==n[t]})};e.affectedToPathList=function(e,t){var r=[],n=new WeakSet;return function e(o,i){if(!n.has(o)){f(o)&&n.add(o);var a=f(o)&&t.get(s(o));a?a.forEach(function(t){e(o[t],i?[].concat(i,[t]):[t])}):i&&r.push(i)}}(e),r},e.createProxy=y,e.getUntracked=function(e){return c(e)&&e[o]||null},e.isChanged=function e(n,o,i,a){if(Object.is(n,o))return!1;if(!f(n)||!f(o))return!0;var u=i.get(s(n));if(!u)return!0;if(a){var c,l=a.get(n);if(l&&l.n===o)return l.g;a.set(n,((c={}).n=o,c.g=!1,c))}for(var y,b,d=null,g=function(e,r){var n="undefined"!=typeof Symbol&&e[Symbol.iterator]||e["@@iterator"];if(n)return(n=n.call(e)).next.bind(n);if(Array.isArray(e)||(n=function(e,r){if(e){if("string"==typeof e)return t(e,r);var n=Object.prototype.toString.call(e).slice(8,-1);return"Object"===n&&e.constructor&&(n=e.constructor.name),"Map"===n||"Set"===n?Array.from(e):"Arguments"===n||/^(?:Ui|I)nt(?:8|16|32)(?:Clamped)?Array$/.test(n)?t(e,r):void 0}}(e))){n&&(e=n);var o=0;return function(){return o>=e.length?{done:!0}:{done:!1,value:e[o++]}}}throw new TypeError("Invalid attempt to iterate non-iterable instance.\nIn order to be iterable, non-array objects must have a [Symbol.iterator]() method.")}(u);!(y=g()).done;){var v=y.value,m=v===r?p(n,o):e(n[v],o[v],i,a);if(!0!==m&&!1!==m||(d=m),d)break}return null===d&&(d=!0),a&&a.set(n,((b={}).n=o,b.g=d,b)),d},e.markToTrack=function(e,t){void 0===t&&(t=!0),u.set(e,t)},e.replaceNewProxy=function(e){i=e},e.trackMemo=function(e){return!!c(e)&&n in e}});
 //# sourceMappingURL=index.umd.js.map

dist/src/index.d.ts

@@ -0,1 +1,2 @@
+declare let newProxy: <T extends object>(target: T, handler: ProxyHandler<T>) => T;
 /**
@@ -120,1 +121,10 @@ * Create a proxy.
 export declare const affectedToPathList: (obj: unknown, affected: WeakMap<object, unknown>) => (string | symbol)[][];
+/**
+ * replace newProxy function.
+ *
+ * This can be used if you want to use proxy-polyfill.
+ * Note that proxy-polyfill can't polyfill everything.
+ * Use it at your own risk.
+ */
+export declare const replaceNewProxy: (fn: typeof newProxy) => void;
+export {};

package.json

 {
   "name": "proxy-compare",
   "description": "Compare two objects using accessed properties with Proxy",
-  "version": "2.2.0",
+  "version": "2.3.0",
   "author": "Daishi Kato",
@@ -31,3 +31,3 @@ "repository": {
     "compile": "microbundle build -f modern,umd",
-    "postcompile": "cp dist/index.modern.js dist/index.modern.mjs && cp dist/index.modern.js.map dist/index.modern.mjs.map",
+    "postcompile": "cp dist/index.modern.mjs dist/index.modern.js && cp dist/index.modern.mjs.map dist/index.modern.js.map",
     "test": "run-s eslint tsc-test jest",
@@ -52,15 +52,15 @@ "eslint": "eslint --ext .js,.ts --ignore-pattern dist .",
   "devDependencies": {
-    "@types/jest": "^28.1.1",
-    "@typescript-eslint/eslint-plugin": "^5.28.0",
-    "@typescript-eslint/parser": "^5.28.0",
+    "@types/jest": "^28.1.6",
+    "@typescript-eslint/eslint-plugin": "^5.33.0",
+    "@typescript-eslint/parser": "^5.33.0",
     "documentation": "^13.2.5",
-    "eslint": "^8.17.0",
+    "eslint": "^8.21.0",
     "eslint-config-airbnb-base": "^15.0.0",
     "eslint-plugin-import": "^2.26.0",
-    "jest": "^28.1.1",
-    "microbundle": "^0.15.0",
+    "jest": "^28.1.3",
+    "microbundle": "^0.15.1",
     "npm-run-all": "^4.1.5",
-    "ts-jest": "^28.0.5",
-    "typescript": "^4.7.3"
+    "ts-jest": "^28.0.7",
+    "typescript": "^4.7.4"
   }
 }

README.md

@@ -30,13 +30,11 @@ # proxy-compare
 > proxy = createProxy(state, affected)
-Proxy [ { a: 1, b: 2 },
-  { r: [Function],
-    u: [Function],
-    get: [Function],
-    has: [Function],
-    ownKeys: [Function],
-    p: Proxy [ [Object], [Circular] ],
-    o: { a: 1, b: 2 },
-    t: false,
-    a: WeakMap { [items unknown] },
-    c: undefined } ]
+Proxy [
+  { a: 1, b: 2 },
+  {
+    get: [Function: get],
+    has: [Function: has],
+    getOwnPropertyDescriptor: [Function: getOwnPropertyDescriptor],
+    ownKeys: [Function: ownKeys]
+  }
+]
 > proxy.a
@@ -191,2 +189,14 @@ 1
 
+### replaceNewProxy
+
+replace newProxy function.
+
+This can be used if you want to use proxy-polyfill.
+Note that proxy-polyfill can't polyfill everything.
+Use it at your own risk.
+
+#### Parameters
+
+*   `fn` **any** 
+
 ## Projects using this library
@@ -193,0 +203,0 @@

src/index.ts

@@ -14,2 +14,8 @@ // symbols
 
+// function to create a new bare proxy
+let newProxy = <T extends object>(
+  target: T,
+  handler: ProxyHandler<T>,
+) => new Proxy(target, handler);
+
 // get object prototype
@@ -45,37 +51,44 @@ const getProto = Object.getPrototypeOf;
 // copy frozen object
-const unfreeze = (obj: object) => {
-  if (Array.isArray(obj)) {
-    // Arrays need a special way to copy
-    return Array.from(obj);
+const unfrozenCache = new WeakMap<object, object>();
+const unfreeze = <T extends object>(obj: T): T => {
+  let unfrozen = unfrozenCache.get(obj);
+  if (!unfrozen) {
+    if (Array.isArray(obj)) {
+      // Arrays need a special way to copy
+      unfrozen = Array.from(obj);
+    } else {
+      // For non-array objects, we create a new object keeping the prototype
+      // with changing all configurable options (otherwise, proxies will complain)
+      const descriptors = Object.getOwnPropertyDescriptors(obj);
+      Object.values(descriptors).forEach((desc) => { desc.configurable = true; });
+      unfrozen = Object.create(getProto(obj), descriptors);
+    }
+    unfrozenCache.set(obj, unfrozen as object);
   }
-  // For non-array objects, we create a new object keeping the prototype
-  // with changing all configurable options (otherwise, proxies will complain)
-  const descriptors = Object.getOwnPropertyDescriptors(obj);
-  Object.values(descriptors).forEach((desc) => { desc.configurable = true; });
-  return Object.create(getProto(obj), descriptors);
+  return unfrozen as T;
 };
 
 type Affected = WeakMap<object, Set<string | symbol>>;
-type ProxyCache<T extends object> = WeakMap<object, ProxyHandler<T>>;
-type ProxyHandler<T extends object> = {
-  [FROZEN_PROPERTY]: boolean;
+type ProxyHandlerState<T extends object> = {
+  readonly [FROZEN_PROPERTY]: boolean;
   [PROXY_PROPERTY]?: T;
   [PROXY_CACHE_PROPERTY]?: ProxyCache<object> | undefined;
   [AFFECTED_PROPERTY]?: Affected;
-  get(target: T, key: string | symbol): unknown;
-  has(target: T, key: string | symbol): boolean;
-  getOwnPropertyDescriptor(target: T, key: string | symbol): PropertyDescriptor | undefined;
-  ownKeys(target: T): (string | symbol)[];
-  set?(target: T, key: string | symbol, value: unknown): boolean;
-  deleteProperty?(target: T, key: string | symbol): boolean;
-};
+}
+type ProxyCache<T extends object> = WeakMap<
+  object,
+  readonly [ProxyHandler<T>, ProxyHandlerState<T>]
+>;
 
 const createProxyHandler = <T extends object>(origObj: T, frozen: boolean) => {
+  const state: ProxyHandlerState<T> = {
+    [FROZEN_PROPERTY]: frozen,
+  };
   let trackObject = false; // for trackMemo
-  const recordUsage = (h: ProxyHandler<T>, key: string | symbol, skipWithOwnKeys?: boolean) => {
+  const recordUsage = (key: string | symbol, skipWithOwnKeys?: boolean) => {
     if (!trackObject) {
-      let used = (h[AFFECTED_PROPERTY] as Affected).get(origObj);
+      let used = (state[AFFECTED_PROPERTY] as Affected).get(origObj);
       if (!used) {
         used = new Set();
-        (h[AFFECTED_PROPERTY] as Affected).set(origObj, used);
+        (state[AFFECTED_PROPERTY] as Affected).set(origObj, used);
       }
@@ -87,8 +100,7 @@ if (!skipWithOwnKeys || !used.has(OWN_KEYS_SYMBOL)) {
   };
-  const recordObjectAsUsed = (h: ProxyHandler<T>) => {
+  const recordObjectAsUsed = () => {
     trackObject = true;
-    (h[AFFECTED_PROPERTY] as Affected).delete(origObj);
+    (state[AFFECTED_PROPERTY] as Affected).delete(origObj);
   };
   const handler: ProxyHandler<T> = {
-    [FROZEN_PROPERTY]: frozen,
     get(target, key) {
@@ -98,7 +110,7 @@ if (key === GET_ORIGINAL_SYMBOL) {
       }
-      recordUsage(this, key);
+      recordUsage(key);
       return createProxy(
         (target as any)[key],
-        (this[AFFECTED_PROPERTY] as Affected),
-        this[PROXY_CACHE_PROPERTY],
+        (state[AFFECTED_PROPERTY] as Affected),
+        state[PROXY_CACHE_PROPERTY],
       );
@@ -108,3 +120,3 @@ },
       if (key === TRACK_MEMO_SYMBOL) {
-        recordObjectAsUsed(this);
+        recordObjectAsUsed();
         return true;
@@ -115,3 +127,3 @@ }
       // if `'a' in obj` is handled.
-      recordUsage(this, key);
+      recordUsage(key);
       return key in target;
@@ -123,7 +135,7 @@ },
       // if `obj.getOwnPropertyDescriptor('a'))` is handled.
-      recordUsage(this, key, true);
+      recordUsage(key, true);
       return Object.getOwnPropertyDescriptor(target, key);
     },
     ownKeys(target) {
-      recordUsage(this, OWN_KEYS_SYMBOL);
+      recordUsage(OWN_KEYS_SYMBOL);
       return Reflect.ownKeys(target);
@@ -135,3 +147,3 @@ },
   }
-  return handler;
+  return [handler, state] as const;
 };
@@ -185,18 +197,18 @@
   const frozen = isFrozen(target);
-  let proxyHandler: ProxyHandler<typeof target> | undefined = (
+  let handlerAndState = (
     proxyCache && (proxyCache as ProxyCache<typeof target>).get(target)
   );
-  if (!proxyHandler || proxyHandler[FROZEN_PROPERTY] !== frozen) {
-    proxyHandler = createProxyHandler<T extends object ? T : never>(target, frozen);
-    proxyHandler[PROXY_PROPERTY] = new Proxy(
+  if (!handlerAndState || handlerAndState[1][FROZEN_PROPERTY] !== frozen) {
+    handlerAndState = createProxyHandler<typeof target>(target, frozen);
+    handlerAndState[1][PROXY_PROPERTY] = newProxy(
       frozen ? unfreeze(target) : target,
-      proxyHandler,
-    ) as typeof target;
+      handlerAndState[0],
+    );
     if (proxyCache) {
-      proxyCache.set(target, proxyHandler);
+      proxyCache.set(target, handlerAndState);
     }
   }
-  proxyHandler[AFFECTED_PROPERTY] = affected as Affected;
-  proxyHandler[PROXY_CACHE_PROPERTY] = proxyCache as ProxyCache<object> | undefined;
-  return proxyHandler[PROXY_PROPERTY] as typeof target;
+  handlerAndState[1][AFFECTED_PROPERTY] = affected as Affected;
+  handlerAndState[1][PROXY_CACHE_PROPERTY] = proxyCache as ProxyCache<object> | undefined;
+  return handlerAndState[1][PROXY_PROPERTY] as typeof target;
 };
@@ -391,1 +403,12 @@
 };
+
+/**
+ * replace newProxy function.
+ *
+ * This can be used if you want to use proxy-polyfill.
+ * Note that proxy-polyfill can't polyfill everything.
+ * Use it at your own risk.
+ */
+export const replaceNewProxy = (fn: typeof newProxy) => {
+  newProxy = fn;
+};

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Improved metrics

Total package byte prevSize

89420

increased by3.77%

Lines of code

544

increased by6.67%

Number of lines in readme file

213

increased by4.93%

No dependency changes