From 7f9d1f38721dad7ee679a6b8c3c958e9ef11104b Mon Sep 17 00:00:00 2001
From: Michael Cheng <mcheng.work@gmail.com>
Date: Sun, 8 Mar 2026 09:43:42 +0800
Subject: [PATCH 1/2] feat: A naive replacement of both lodash methods.

---
 dist/index.d.ts        |  2 +-
 dist/index.js          | 28 ++++++++++++++++------------
 dist/node-rules.min.js |  2 +-
 lib/index.ts           | 11 ++++++++---
 package-lock.json      | 24 ------------------------
 package.json           |  4 ----
 6 files changed, 26 insertions(+), 45 deletions(-)

diff --git a/dist/index.d.ts b/dist/index.d.ts
index c20eba5..5de8a79 100644
--- a/dist/index.d.ts
+++ b/dist/index.d.ts
@@ -41,4 +41,4 @@ declare class RuleEngine {
     prioritize(priority: number, filter?: Record<string, unknown>): void;
 }
 
-export { RuleEngine };
+export { API, Fact, Options, Rule, RuleEngine };
diff --git a/dist/index.js b/dist/index.js
index 1d2ffac..b2893b1 100644
--- a/dist/index.js
+++ b/dist/index.js
@@ -1,4 +1,4 @@
-"use strict";Object.defineProperty(exports, "__esModule", {value: true}); function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }var __defProp = Object.defineProperty;
+"use strict";Object.defineProperty(exports, "__esModule", {value: true});var __defProp = Object.defineProperty;
 var __defNormalProp = (obj, key, value) => key in obj ? __defProp(obj, key, { enumerable: true, configurable: true, writable: true, value }) : obj[key] = value;
 var __publicField = (obj, key, value) => {
   __defNormalProp(obj, typeof key !== "symbol" ? key + "" : key, value);
@@ -6,8 +6,12 @@ var __publicField = (obj, key, value) => {
 };
 
 // lib/index.ts
-var _lodashclonedeep = require('lodash.clonedeep'); var _lodashclonedeep2 = _interopRequireDefault(_lodashclonedeep);
-var _lodashisequal = require('lodash.isequal'); var _lodashisequal2 = _interopRequireDefault(_lodashisequal);
+var cloneDeep = (fact) => {
+  return JSON.parse(JSON.stringify(fact));
+};
+var isEqual = (lastSession, session) => {
+  return JSON.stringify(lastSession) === JSON.stringify(session);
+};
 var RuleEngine = class {
   constructor(rules, options) {
     __publicField(this, "rules", []);
@@ -52,13 +56,13 @@ var RuleEngine = class {
   execute(fact, callback) {
     const thisHolder = this;
     let complete = false;
-    const session = _lodashclonedeep2.default.call(void 0, fact);
-    let lastSession = _lodashclonedeep2.default.call(void 0, fact);
+    const session = cloneDeep(fact);
+    let lastSession = cloneDeep(fact);
     let rules = this.activeRules;
     const matchPath = [];
     const ignoreFactChanges = this.ignoreFactChanges;
     function FnRuleLoop(x) {
-      const API = {
+      const API2 = {
         rule: () => rules[x],
         when: (outcome) => {
           if (outcome) {
@@ -66,11 +70,11 @@ var RuleEngine = class {
             _consequence.ruleRef = rules[x].id || rules[x].name || `index_${x}`;
             thisHolder.nextTick(() => {
               matchPath.push(_consequence.ruleRef);
-              _consequence.call(session, API, session);
+              _consequence.call(session, API2, session);
             });
           } else {
             thisHolder.nextTick(() => {
-              API.next();
+              API2.next();
             });
           }
         },
@@ -80,10 +84,10 @@ var RuleEngine = class {
           return FnRuleLoop(0);
         },
         next: () => {
-          if (!ignoreFactChanges && !_lodashisequal2.default.call(void 0, lastSession, session)) {
-            lastSession = _lodashclonedeep2.default.call(void 0, session);
+          if (!ignoreFactChanges && !isEqual(lastSession, session)) {
+            lastSession = cloneDeep(session);
             thisHolder.nextTick(() => {
-              API.restart();
+              API2.restart();
             });
           } else {
             thisHolder.nextTick(() => {
@@ -95,7 +99,7 @@ var RuleEngine = class {
       rules = thisHolder.activeRules;
       if (x < rules.length && !complete) {
         const _rule = rules[x].condition;
-        _rule.call(session, API, session);
+        _rule.call(session, API2, session);
       } else {
         thisHolder.nextTick(() => {
           session.matchPath = matchPath;
diff --git a/dist/node-rules.min.js b/dist/node-rules.min.js
index 5273f31..6726c53 100644
--- a/dist/node-rules.min.js
+++ b/dist/node-rules.min.js
@@ -1 +1 @@
-!function(t,e){"object"==typeof exports&&"undefined"!=typeof module?e(exports):"function"==typeof define&&define.amd?define(["exports"],e):e((t="undefined"!=typeof globalThis?globalThis:t||self).NodeRules=t.NodeRules||{})}(this,(function(t){"use strict";var e="undefined"!=typeof global?global:"undefined"!=typeof self?self:"undefined"!=typeof window?window:{};function r(){throw new Error("setTimeout has not been defined")}function n(){throw new Error("clearTimeout has not been defined")}var o=r,i=n;function u(t){if(o===setTimeout)return setTimeout(t,0);if((o===r||!o)&&setTimeout)return o=setTimeout,setTimeout(t,0);try{return o(t,0)}catch(e){try{return o.call(null,t,0)}catch(e){return o.call(this,t,0)}}}"function"==typeof e.setTimeout&&(o=setTimeout),"function"==typeof e.clearTimeout&&(i=clearTimeout);var a,c=[],s=!1,f=-1;function l(){s&&a&&(s=!1,a.length?c=a.concat(c):f=-1,c.length&&h())}function h(){if(!s){var t=u(l);s=!0;for(var 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+!function(e,t){"object"==typeof exports&&"undefined"!=typeof module?t(exports):"function"==typeof define&&define.amd?define(["exports"],t):t((e="undefined"!=typeof globalThis?globalThis:e||self).NodeRules=e.NodeRules||{})}(this,(function(e){"use strict";var t="undefined"!=typeof global?global:"undefined"!=typeof self?self:"undefined"!=typeof window?window:{};function n(){throw new Error("setTimeout has not been defined")}function r(){throw new Error("clearTimeout has not been defined")}var i=n,o=r;function s(e){if(i===setTimeout)return setTimeout(e,0);if((i===n||!i)&&setTimeout)return i=setTimeout,setTimeout(e,0);try{return i(e,0)}catch(t){try{return i.call(null,e,0)}catch(t){return i.call(this,e,0)}}}"function"==typeof t.setTimeout&&(i=setTimeout),"function"==typeof t.clearTimeout&&(o=clearTimeout);var u,l=[],c=!1,a=-1;function f(){c&&u&&(c=!1,u.length?l=u.concat(l):a=-1,l.length&&h())}function h(){if(!c){var e=s(f);c=!0;for(var t=l.length;t;){for(u=l,l=[];++a<t;)u&&u[a].run();a=-1,t=l.length}u=null,c=!1,function(e){if(o===clearTimeout)return clearTimeout(e);if((o===r||!o)&&clearTimeout)return o=clearTimeout,clearTimeout(e);try{return o(e)}catch(t){try{return o.call(null,e)}catch(t){return o.call(this,e)}}}(e)}}function d(e){var t=new Array(arguments.length-1);if(arguments.length>1)for(var n=1;n<arguments.length;n++)t[n-1]=arguments[n];l.push(new p(e,t)),1!==l.length||c||s(h)}function p(e,t){this.fun=e,this.array=t}p.prototype.run=function(){this.fun.apply(null,this.array)};function y(){}var g=y,m=y,v=y,w=y,T=y,b=y,R=y;var x=t.performance||{},k=x.now||x.mozNow||x.msNow||x.oNow||x.webkitNow||function(){return(new Date).getTime()};var N=new Date;var O={nextTick:d,title:"browser",browser:!0,env:{},argv:[],version:"",versions:{},on:g,addListener:m,once:v,off:w,removeListener:T,removeAllListeners:b,emit:R,binding:function(e){throw new Error("process.binding is not supported")},cwd:function(){return"/"},chdir:function(e){throw new Error("process.chdir is not supported")},umask:function(){return 0},hrtime:function(e){var t=.001*k.call(x),n=Math.floor(t),r=Math.floor(t%1*1e9);return e&&(n-=e[0],(r-=e[1])<0&&(n--,r+=1e9)),[n,r]},platform:"browser",release:{},config:{},uptime:function(){return(new Date-N)/1e3}},j={};Object.defineProperty(j,"__esModule",{value:!0});var E=Object.defineProperty,C=(e,t,n)=>(((e,t,n)=>{t in e?E(e,t,{enumerable:!0,configurable:!0,writable:!0,value:n}):e[t]=n})(e,"symbol"!=typeof t?t+"":t,n),n),_=e=>JSON.parse(JSON.stringify(e)),A=(e,t)=>JSON.stringify(e)===JSON.stringify(t),F=j.RuleEngine=class{constructor(e,t){C(this,"rules",[]),C(this,"activeRules",[]),C(this,"ignoreFactChanges",!1),e&&this.register(e),t&&(this.ignoreFactChanges=t.ignoreFactChanges||!1)}init(){this.rules=[],this.activeRules=[]}register(e){Array.isArray(e)?this.rules.push(...e):null!==e&&"object"==typeof e&&this.rules.push(e),this.sync()}sync(){this.activeRules=this.rules.filter((e=>{if(void 0===e.on&&(e.on=!0),!0===e.on)return e})),this.activeRules.sort(((e,t)=>e.priority&&t.priority?t.priority-e.priority:0))}execute(e,t){const n=this;let r=!1;const i=_(e);let o=_(e),s=this.activeRules;const u=[],l=this.ignoreFactChanges;!function e(c){const a={rule:()=>s[c],when:e=>{if(e){const e=s[c].consequence;e.ruleRef=s[c].id||s[c].name||`index_${c}`,n.nextTick((()=>{u.push(e.ruleRef),e.call(i,a,i)}))}else n.nextTick((()=>{a.next()}))},restart:()=>e(0),stop:()=>(r=!0,e(0)),next:()=>{l||A(o,i)?n.nextTick((()=>e(c+1))):(o=_(i),n.nextTick((()=>{a.restart()})))}};if(s=n.activeRules,c<s.length&&!r){s[c].condition.call(i,a,i)}else n.nextTick((()=>{i.matchPath=u,t(i)}))}(0)}nextTick(e){(null==O?void 0:d)?null==O||d(e):setTimeout(e,0)}findRules(e){return void 0===e?this.rules:(Object.keys(e).forEach((t=>void 0===e[t]&&delete e[t])),this.rules.filter((t=>Object.keys(e).some((n=>e[n]===t[n])))))}turn(e,t){const n=this.findRules(t);for(let t=0,r=n.length;t<r;t++)n[t].on="on"===e.toLowerCase();this.sync()}prioritize(e,t){const n=this.findRules(t);for(let t=0,r=n.length;t<r;t++)n[t].priority=e;this.sync()}};e.RuleEngine=F,e.default=j,Object.defineProperty(e,"__esModule",{value:!0})}));
diff --git a/lib/index.ts b/lib/index.ts
index c10051c..9a9f6e6 100644
--- a/lib/index.ts
+++ b/lib/index.ts
@@ -1,8 +1,13 @@
-import cloneDeep from "lodash.clonedeep";
-import isEqual from "lodash.isequal";
-
 import { Rule, Options, Fact, API } from "./types";
 
+const cloneDeep = (fact: Fact): Fact => {
+  return JSON.parse(JSON.stringify(fact));
+}
+
+const isEqual = (lastSession: Fact, session: Fact): boolean => {
+  return JSON.stringify(lastSession) === JSON.stringify(session);
+}
+
 export {Rule, Options, Fact, API}
 
 export class RuleEngine {
diff --git a/package-lock.json b/package-lock.json
index adec319..1df9c52 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -8,10 +8,6 @@
       "name": "node-rules",
       "version": "9.2.0",
       "license": "MIT",
-      "dependencies": {
-        "lodash.clonedeep": "^4.5.0",
-        "lodash.isequal": "^4.5.0"
-      },
       "devDependencies": {
         "@rollup/plugin-commonjs": "^24.0.1",
         "@rollup/plugin-node-resolve": "^15.0.1",
@@ -3613,16 +3609,6 @@
       "integrity": "sha512-v2kDEe57lecTulaDIuNTPy3Ry4gLGJ6Z1O3vE1krgXZNrsQ+LFTGHVxVjcXPs17LhbZVGedAJv8XZ1tvj5FvSg==",
       "dev": true
     },
-    "node_modules/lodash.clonedeep": {
-      "version": "4.5.0",
-      "resolved": "https://registry.npmjs.org/lodash.clonedeep/-/lodash.clonedeep-4.5.0.tgz",
-      "integrity": "sha512-H5ZhCF25riFd9uB5UCkVKo61m3S/xZk1x4wA6yp/L3RFP6Z/eHH1ymQcGLo7J3GMPfm0V/7m1tryHuGVxpqEBQ=="
-    },
-    "node_modules/lodash.isequal": {
-      "version": "4.5.0",
-      "resolved": "https://registry.npmjs.org/lodash.isequal/-/lodash.isequal-4.5.0.tgz",
-      "integrity": "sha512-pDo3lu8Jhfjqls6GkMgpahsF9kCyayhgykjyLMNFTKWrpVdAQtYyB4muAMWozBB4ig/dtWAmsMxLEI8wuz+DYQ=="
-    },
     "node_modules/lodash.memoize": {
       "version": "4.1.2",
       "resolved": "https://registry.npmjs.org/lodash.memoize/-/lodash.memoize-4.1.2.tgz",
@@ -11042,16 +11028,6 @@
       "integrity": "sha512-v2kDEe57lecTulaDIuNTPy3Ry4gLGJ6Z1O3vE1krgXZNrsQ+LFTGHVxVjcXPs17LhbZVGedAJv8XZ1tvj5FvSg==",
       "dev": true
     },
-    "lodash.clonedeep": {
-      "version": "4.5.0",
-      "resolved": "https://registry.npmjs.org/lodash.clonedeep/-/lodash.clonedeep-4.5.0.tgz",
-      "integrity": "sha512-H5ZhCF25riFd9uB5UCkVKo61m3S/xZk1x4wA6yp/L3RFP6Z/eHH1ymQcGLo7J3GMPfm0V/7m1tryHuGVxpqEBQ=="
-    },
-    "lodash.isequal": {
-      "version": "4.5.0",
-      "resolved": "https://registry.npmjs.org/lodash.isequal/-/lodash.isequal-4.5.0.tgz",
-      "integrity": "sha512-pDo3lu8Jhfjqls6GkMgpahsF9kCyayhgykjyLMNFTKWrpVdAQtYyB4muAMWozBB4ig/dtWAmsMxLEI8wuz+DYQ=="
-    },
     "lodash.memoize": {
       "version": "4.1.2",
       "resolved": "https://registry.npmjs.org/lodash.memoize/-/lodash.memoize-4.1.2.tgz",
diff --git a/package.json b/package.json
index 3ea0087..0c40cbe 100755
--- a/package.json
+++ b/package.json
@@ -6,10 +6,6 @@
     "type": "git",
     "url": "https://github.com/mithunsatheesh/node-rules"
   },
-  "dependencies": {
-    "lodash.clonedeep": "^4.5.0",
-    "lodash.isequal": "^4.5.0"
-  },
   "devDependencies": {
     "@rollup/plugin-commonjs": "^24.0.1",
     "@rollup/plugin-node-resolve": "^15.0.1",

From faad8fc88d9b57a18b29b3615a6bf1f400d849ab Mon Sep 17 00:00:00 2001
From: Michael Cheng <mcheng.work@gmail.com>
Date: Sun, 8 Mar 2026 11:04:00 +0800
Subject: [PATCH 2/2] feat: Switch to ES-Toolkit

- Change moduleResolution to node.
- Fix RollUp issue by excluding the problematic module.
---
 dist/index.js          | 15 ++++------
 dist/node-rules.min.js |  2 +-
 lib/index.ts           |  9 +-----
 package-lock.json      | 68 +++++++++++-------------------------------
 package.json           |  5 ++--
 rollup.config.mjs      |  5 +++-
 tsconfig.json          |  3 +-
 7 files changed, 34 insertions(+), 73 deletions(-)

diff --git a/dist/index.js b/dist/index.js
index b2893b1..52f77c3 100644
--- a/dist/index.js
+++ b/dist/index.js
@@ -6,12 +6,7 @@ var __publicField = (obj, key, value) => {
 };
 
 // lib/index.ts
-var cloneDeep = (fact) => {
-  return JSON.parse(JSON.stringify(fact));
-};
-var isEqual = (lastSession, session) => {
-  return JSON.stringify(lastSession) === JSON.stringify(session);
-};
+var _compat = require('es-toolkit/compat');
 var RuleEngine = class {
   constructor(rules, options) {
     __publicField(this, "rules", []);
@@ -56,8 +51,8 @@ var RuleEngine = class {
   execute(fact, callback) {
     const thisHolder = this;
     let complete = false;
-    const session = cloneDeep(fact);
-    let lastSession = cloneDeep(fact);
+    const session = _compat.cloneDeep.call(void 0, fact);
+    let lastSession = _compat.cloneDeep.call(void 0, fact);
     let rules = this.activeRules;
     const matchPath = [];
     const ignoreFactChanges = this.ignoreFactChanges;
@@ -84,8 +79,8 @@ var RuleEngine = class {
           return FnRuleLoop(0);
         },
         next: () => {
-          if (!ignoreFactChanges && !isEqual(lastSession, session)) {
-            lastSession = cloneDeep(session);
+          if (!ignoreFactChanges && !_compat.isEqual.call(void 0, lastSession, session)) {
+            lastSession = _compat.cloneDeep.call(void 0, session);
             thisHolder.nextTick(() => {
               API2.restart();
             });
diff --git a/dist/node-rules.min.js b/dist/node-rules.min.js
index 6726c53..677c766 100644
--- a/dist/node-rules.min.js
+++ b/dist/node-rules.min.js
@@ -1 +1 @@
-!function(e,t){"object"==typeof exports&&"undefined"!=typeof module?t(exports):"function"==typeof define&&define.amd?define(["exports"],t):t((e="undefined"!=typeof globalThis?globalThis:e||self).NodeRules=e.NodeRules||{})}(this,(function(e){"use strict";var t="undefined"!=typeof global?global:"undefined"!=typeof self?self:"undefined"!=typeof window?window:{};function n(){throw new Error("setTimeout has not been defined")}function r(){throw new Error("clearTimeout has not been defined")}var i=n,o=r;function s(e){if(i===setTimeout)return setTimeout(e,0);if((i===n||!i)&&setTimeout)return i=setTimeout,setTimeout(e,0);try{return i(e,0)}catch(t){try{return i.call(null,e,0)}catch(t){return i.call(this,e,0)}}}"function"==typeof t.setTimeout&&(i=setTimeout),"function"==typeof t.clearTimeout&&(o=clearTimeout);var u,l=[],c=!1,a=-1;function f(){c&&u&&(c=!1,u.length?l=u.concat(l):a=-1,l.length&&h())}function h(){if(!c){var e=s(f);c=!0;for(var t=l.length;t;){for(u=l,l=[];++a<t;)u&&u[a].run();a=-1,t=l.length}u=null,c=!1,function(e){if(o===clearTimeout)return clearTimeout(e);if((o===r||!o)&&clearTimeout)return o=clearTimeout,clearTimeout(e);try{return o(e)}catch(t){try{return o.call(null,e)}catch(t){return o.call(this,e)}}}(e)}}function d(e){var t=new Array(arguments.length-1);if(arguments.length>1)for(var n=1;n<arguments.length;n++)t[n-1]=arguments[n];l.push(new p(e,t)),1!==l.length||c||s(h)}function p(e,t){this.fun=e,this.array=t}p.prototype.run=function(){this.fun.apply(null,this.array)};function y(){}var g=y,m=y,v=y,w=y,T=y,b=y,R=y;var x=t.performance||{},k=x.now||x.mozNow||x.msNow||x.oNow||x.webkitNow||function(){return(new Date).getTime()};var N=new Date;var O={nextTick:d,title:"browser",browser:!0,env:{},argv:[],version:"",versions:{},on:g,addListener:m,once:v,off:w,removeListener:T,removeAllListeners:b,emit:R,binding:function(e){throw new Error("process.binding is not supported")},cwd:function(){return"/"},chdir:function(e){throw new Error("process.chdir is not supported")},umask:function(){return 0},hrtime:function(e){var t=.001*k.call(x),n=Math.floor(t),r=Math.floor(t%1*1e9);return e&&(n-=e[0],(r-=e[1])<0&&(n--,r+=1e9)),[n,r]},platform:"browser",release:{},config:{},uptime:function(){return(new Date-N)/1e3}},j={};Object.defineProperty(j,"__esModule",{value:!0});var E=Object.defineProperty,C=(e,t,n)=>(((e,t,n)=>{t in e?E(e,t,{enumerable:!0,configurable:!0,writable:!0,value:n}):e[t]=n})(e,"symbol"!=typeof t?t+"":t,n),n),_=e=>JSON.parse(JSON.stringify(e)),A=(e,t)=>JSON.stringify(e)===JSON.stringify(t),F=j.RuleEngine=class{constructor(e,t){C(this,"rules",[]),C(this,"activeRules",[]),C(this,"ignoreFactChanges",!1),e&&this.register(e),t&&(this.ignoreFactChanges=t.ignoreFactChanges||!1)}init(){this.rules=[],this.activeRules=[]}register(e){Array.isArray(e)?this.rules.push(...e):null!==e&&"object"==typeof e&&this.rules.push(e),this.sync()}sync(){this.activeRules=this.rules.filter((e=>{if(void 0===e.on&&(e.on=!0),!0===e.on)return e})),this.activeRules.sort(((e,t)=>e.priority&&t.priority?t.priority-e.priority:0))}execute(e,t){const n=this;let r=!1;const i=_(e);let o=_(e),s=this.activeRules;const u=[],l=this.ignoreFactChanges;!function e(c){const a={rule:()=>s[c],when:e=>{if(e){const e=s[c].consequence;e.ruleRef=s[c].id||s[c].name||`index_${c}`,n.nextTick((()=>{u.push(e.ruleRef),e.call(i,a,i)}))}else n.nextTick((()=>{a.next()}))},restart:()=>e(0),stop:()=>(r=!0,e(0)),next:()=>{l||A(o,i)?n.nextTick((()=>e(c+1))):(o=_(i),n.nextTick((()=>{a.restart()})))}};if(s=n.activeRules,c<s.length&&!r){s[c].condition.call(i,a,i)}else n.nextTick((()=>{i.matchPath=u,t(i)}))}(0)}nextTick(e){(null==O?void 0:d)?null==O||d(e):setTimeout(e,0)}findRules(e){return void 0===e?this.rules:(Object.keys(e).forEach((t=>void 0===e[t]&&delete e[t])),this.rules.filter((t=>Object.keys(e).some((n=>e[n]===t[n])))))}turn(e,t){const n=this.findRules(t);for(let t=0,r=n.length;t<r;t++)n[t].on="on"===e.toLowerCase();this.sync()}prioritize(e,t){const n=this.findRules(t);for(let t=0,r=n.length;t<r;t++)n[t].priority=e;this.sync()}};e.RuleEngine=F,e.default=j,Object.defineProperty(e,"__esModule",{value:!0})}));
+!function(e,r){"object"==typeof exports&&"undefined"!=typeof module?r(exports):"function"==typeof define&&define.amd?define(["exports"],r):r((e="undefined"!=typeof globalThis?globalThis:e||self).NodeRules=e.NodeRules||{})}(this,(function(e){"use strict";var r="undefined"!=typeof global?global:"undefined"!=typeof self?self:"undefined"!=typeof window?window:{};function i(){throw new Error("setTimeout has not been defined")}function t(){throw new Error("clearTimeout has not been defined")}var s=i,a=t;function n(e){if(s===setTimeout)return setTimeout(e,0);if((s===i||!s)&&setTimeout)return s=setTimeout,setTimeout(e,0);try{return s(e,0)}catch(r){try{return s.call(null,e,0)}catch(r){return s.call(this,e,0)}}}"function"==typeof r.setTimeout&&(s=setTimeout),"function"==typeof r.clearTimeout&&(a=clearTimeout);var u,o=[],l=!1,c=-1;function j(){l&&u&&(l=!1,u.length?o=u.concat(o):c=-1,o.length&&p())}function p(){if(!l){var e=n(j);l=!0;for(var 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sSafeInteger=Lt.isSafeInteger,e.isSet=Tt.isSet,e.isString=Dt.isString,e.isSymbol=zt.isSymbol,e.isTypedArray=Mt.isTypedArray,e.isWeakMap=Pt.isWeakMap,e.isWeakSet=Nt.isWeakSet,e.matches=Ct.matches,e.matchesProperty=Ft.matchesProperty,e.capitalize=_t.capitalize,e.bindAll=Kt.bindAll,e.camelCase=Ut.camelCase,e.deburr=Vt.deburr,e.endsWith=Zt.endsWith,e.escape=$t.escape,e.escapeRegExp=Gt.escapeRegExp,e.kebabCase=Ht.kebabCase,e.lowerCase=Jt.lowerCase,e.lowerFirst=Qt.lowerFirst,e.pad=Xt.pad,e.padEnd=Yt.padEnd,e.padStart=es.padStart,e.repeat=rs.repeat,e.replace=is.replace,e.snakeCase=ts.snakeCase,e.split=ss.split,e.startCase=as.startCase,e.startsWith=ns.startsWith,e.template=us.template,e.templateSettings=us.templateSettings,e.toLower=os.toLower,e.toUpper=ls.toUpper,e.trim=cs.trim,e.trimEnd=js.trimEnd,e.trimStart=ps.trimStart,e.truncate=qs.truncate,e.unescape=ds.unescape,e.upperCase=fs.upperCase,e.upperFirst=ys.upperFirst,e.words=hs.words,e.cond=ms.cond,e.constant=gs.constant,e.defaultTo=bs.defaultTo,e.eq=vs.isEqualsSameValueZero,e.gt=Ws.gt,e.gte=Is.gte,e.invoke=ks.invoke,e.iteratee=Bs.iteratee,e.lt=xs.lt,e.lte=ws.lte,e.method=Rs.method,e.methodOf=Os.methodOf,e.now=As.now,e.over=Es.over,e.overEvery=Ss.overEvery,e.overSome=Ls.overSome,e.stubArray=Ts.stubArray,e.stubFalse=Ds.stubFalse,e.stubObject=zs.stubObject,e.stubString=Ms.stubString,e.stubTrue=Ps.stubTrue,e.times=Ns.times,e.toArray=Cs.toArray,e.toFinite=Fs.toFinite,e.toInteger=_s.toInteger,e.toLength=Ks.toLength,e.toNumber=Us.toNumber,e.toPath=Vs.toPath,e.toPlainObject=Zs.toPlainObject,e.toSafeInteger=$s.toSafeInteger,e.toString=Gs.toString,e.uniqueId=Hs.uniqueId,e.default=Js.toolkit;var Qs=w(Object.freeze({__proto__:null}));Object.defineProperty(R,"__esModule",{value:!0});var Xs=Object.defineProperty,Ys=(e,r,i)=>(((e,r,i)=>{r in e?Xs(e,r,{enumerable:!0,configurable:!0,writable:!0,value:i}):e[r]=i})(e,"symbol"!=typeof r?r+"":r,i),i),ea=Qs,ra=R.RuleEngine=class{constructor(e,r){Ys(this,"rules",[]),Ys(this,"activeRules",[]),Ys(this,"ignoreFactChanges",!1),e&&this.register(e),r&&(this.ignoreFactChanges=r.ignoreFactChanges||!1)}init(){this.rules=[],this.activeRules=[]}register(e){Array.isArray(e)?this.rules.push(...e):null!==e&&"object"==typeof e&&this.rules.push(e),this.sync()}sync(){this.activeRules=this.rules.filter((e=>{if(void 0===e.on&&(e.on=!0),!0===e.on)return e})),this.activeRules.sort(((e,r)=>e.priority&&r.priority?r.priority-e.priority:0))}execute(e,r){const i=this;let t=!1;const s=ea.cloneDeep.call(void 0,e);let a=ea.cloneDeep.call(void 0,e),n=this.activeRules;const u=[],o=this.ignoreFactChanges;!function e(l){const c={rule:()=>n[l],when:e=>{if(e){const e=n[l].consequence;e.ruleRef=n[l].id||n[l].name||`index_${l}`,i.nextTick((()=>{u.push(e.ruleRef),e.call(s,c,s)}))}else i.nextTick((()=>{c.next()}))},restart:()=>e(0),stop:()=>(t=!0,e(0)),next:()=>{o||ea.isEqual.call(void 0,a,s)?i.nextTick((()=>e(l+1))):(a=ea.cloneDeep.call(void 0,s),i.nextTick((()=>{c.restart()})))}};if(n=i.activeRules,l<n.length&&!t){n[l].condition.call(s,c,s)}else i.nextTick((()=>{s.matchPath=u,r(s)}))}(0)}nextTick(e){(null==x?void 0:q)?null==x||q(e):setTimeout(e,0)}findRules(e){return void 0===e?this.rules:(Object.keys(e).forEach((r=>void 0===e[r]&&delete e[r])),this.rules.filter((r=>Object.keys(e).some((i=>e[i]===r[i])))))}turn(e,r){const i=this.findRules(r);for(let r=0,t=i.length;r<t;r++)i[r].on="on"===e.toLowerCase();this.sync()}prioritize(e,r){const i=this.findRules(r);for(let r=0,t=i.length;r<t;r++)i[r].priority=e;this.sync()}};e.RuleEngine=ra,e.default=R,Object.defineProperty(e,"__esModule",{value:!0})}));
diff --git a/lib/index.ts b/lib/index.ts
index 9a9f6e6..fb235ee 100644
--- a/lib/index.ts
+++ b/lib/index.ts
@@ -1,13 +1,6 @@
+import { cloneDeep, isEqual } from 'es-toolkit/compat';
 import { Rule, Options, Fact, API } from "./types";
 
-const cloneDeep = (fact: Fact): Fact => {
-  return JSON.parse(JSON.stringify(fact));
-}
-
-const isEqual = (lastSession: Fact, session: Fact): boolean => {
-  return JSON.stringify(lastSession) === JSON.stringify(session);
-}
-
 export {Rule, Options, Fact, API}
 
 export class RuleEngine {
diff --git a/package-lock.json b/package-lock.json
index 1df9c52..d378c32 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -8,13 +8,14 @@
       "name": "node-rules",
       "version": "9.2.0",
       "license": "MIT",
+      "dependencies": {
+        "es-toolkit": "^1.45.1"
+      },
       "devDependencies": {
         "@rollup/plugin-commonjs": "^24.0.1",
         "@rollup/plugin-node-resolve": "^15.0.1",
         "@rollup/plugin-terser": "^0.4.0",
         "@types/jest": "^27.0.0",
-        "@types/lodash.clonedeep": "^4.5.6",
-        "@types/lodash.isequal": "^4.5.5",
         "@types/node": "^16.3.3",
         "jest": "^27.0.6",
         "jest-cli": "^27.0.6",
@@ -1218,30 +1219,6 @@
         "pretty-format": "^27.0.0"
       }
     },
-    "node_modules/@types/lodash": {
-      "version": "4.14.191",
-      "resolved": "https://registry.npmjs.org/@types/lodash/-/lodash-4.14.191.tgz",
-      "integrity": "sha512-BdZ5BCCvho3EIXw6wUCXHe7rS53AIDPLE+JzwgT+OsJk53oBfbSmZZ7CX4VaRoN78N+TJpFi9QPlfIVNmJYWxQ==",
-      "dev": true
-    },
-    "node_modules/@types/lodash.clonedeep": {
-      "version": "4.5.7",
-      "resolved": "https://registry.npmjs.org/@types/lodash.clonedeep/-/lodash.clonedeep-4.5.7.tgz",
-      "integrity": "sha512-ccNqkPptFIXrpVqUECi60/DFxjNKsfoQxSQsgcBJCX/fuX1wgyQieojkcWH/KpE3xzLoWN/2k+ZeGqIN3paSvw==",
-      "dev": true,
-      "dependencies": {
-        "@types/lodash": "*"
-      }
-    },
-    "node_modules/@types/lodash.isequal": {
-      "version": "4.5.6",
-      "resolved": "https://registry.npmjs.org/@types/lodash.isequal/-/lodash.isequal-4.5.6.tgz",
-      "integrity": "sha512-Ww4UGSe3DmtvLLJm2F16hDwEQSv7U0Rr8SujLUA2wHI2D2dm8kPu6Et+/y303LfjTIwSBKXB/YTUcAKpem/XEg==",
-      "dev": true,
-      "dependencies": {
-        "@types/lodash": "*"
-      }
-    },
     "node_modules/@types/node": {
       "version": "16.18.14",
       "resolved": "https://registry.npmjs.org/@types/node/-/node-16.18.14.tgz",
@@ -2017,6 +1994,16 @@
         "is-arrayish": "^0.2.1"
       }
     },
+    "node_modules/es-toolkit": {
+      "version": "1.45.1",
+      "resolved": "https://registry.npmjs.org/es-toolkit/-/es-toolkit-1.45.1.tgz",
+      "integrity": "sha512-/jhoOj/Fx+A+IIyDNOvO3TItGmlMKhtX8ISAHKE90c4b/k1tqaqEZ+uUqfpU8DMnW5cgNJv606zS55jGvza0Xw==",
+      "license": "MIT",
+      "workspaces": [
+        "docs",
+        "benchmarks"
+      ]
+    },
     "node_modules/esbuild": {
       "version": "0.12.29",
       "resolved": "https://registry.npmjs.org/esbuild/-/esbuild-0.12.29.tgz",
@@ -9203,30 +9190,6 @@
         "pretty-format": "^27.0.0"
       }
     },
-    "@types/lodash": {
-      "version": "4.14.191",
-      "resolved": "https://registry.npmjs.org/@types/lodash/-/lodash-4.14.191.tgz",
-      "integrity": "sha512-BdZ5BCCvho3EIXw6wUCXHe7rS53AIDPLE+JzwgT+OsJk53oBfbSmZZ7CX4VaRoN78N+TJpFi9QPlfIVNmJYWxQ==",
-      "dev": true
-    },
-    "@types/lodash.clonedeep": {
-      "version": "4.5.7",
-      "resolved": "https://registry.npmjs.org/@types/lodash.clonedeep/-/lodash.clonedeep-4.5.7.tgz",
-      "integrity": "sha512-ccNqkPptFIXrpVqUECi60/DFxjNKsfoQxSQsgcBJCX/fuX1wgyQieojkcWH/KpE3xzLoWN/2k+ZeGqIN3paSvw==",
-      "dev": true,
-      "requires": {
-        "@types/lodash": "*"
-      }
-    },
-    "@types/lodash.isequal": {
-      "version": "4.5.6",
-      "resolved": "https://registry.npmjs.org/@types/lodash.isequal/-/lodash.isequal-4.5.6.tgz",
-      "integrity": "sha512-Ww4UGSe3DmtvLLJm2F16hDwEQSv7U0Rr8SujLUA2wHI2D2dm8kPu6Et+/y303LfjTIwSBKXB/YTUcAKpem/XEg==",
-      "dev": true,
-      "requires": {
-        "@types/lodash": "*"
-      }
-    },
     "@types/node": {
       "version": "16.18.14",
       "resolved": "https://registry.npmjs.org/@types/node/-/node-16.18.14.tgz",
@@ -9815,6 +9778,11 @@
         "is-arrayish": "^0.2.1"
       }
     },
+    "es-toolkit": {
+      "version": "1.45.1",
+      "resolved": "https://registry.npmjs.org/es-toolkit/-/es-toolkit-1.45.1.tgz",
+      "integrity": "sha512-/jhoOj/Fx+A+IIyDNOvO3TItGmlMKhtX8ISAHKE90c4b/k1tqaqEZ+uUqfpU8DMnW5cgNJv606zS55jGvza0Xw=="
+    },
     "esbuild": {
       "version": "0.12.29",
       "resolved": "https://registry.npmjs.org/esbuild/-/esbuild-0.12.29.tgz",
diff --git a/package.json b/package.json
index 0c40cbe..af0dade 100755
--- a/package.json
+++ b/package.json
@@ -6,13 +6,14 @@
     "type": "git",
     "url": "https://github.com/mithunsatheesh/node-rules"
   },
+  "dependencies": {
+    "es-toolkit": "^1.45.1"
+  },
   "devDependencies": {
     "@rollup/plugin-commonjs": "^24.0.1",
     "@rollup/plugin-node-resolve": "^15.0.1",
     "@rollup/plugin-terser": "^0.4.0",
     "@types/jest": "^27.0.0",
-    "@types/lodash.clonedeep": "^4.5.6",
-    "@types/lodash.isequal": "^4.5.5",
     "@types/node": "^16.3.3",
     "jest": "^27.0.6",
     "jest-cli": "^27.0.6",
diff --git a/rollup.config.mjs b/rollup.config.mjs
index a6e771f..0599076 100644
--- a/rollup.config.mjs
+++ b/rollup.config.mjs
@@ -6,7 +6,9 @@ import terser from "@rollup/plugin-terser";
 export default [
   {
     input: "dist/index.js",
-    plugins: [nodeResolve(), commonjs(), globals(), terser()],
+    plugins: [nodeResolve(), commonjs({
+      exclude: ['node_modules/es-toolkit/dist/compat/predicate/isNative.js', 'node_modules/es-toolkit/**'],
+    }), globals(), terser()],
     output: {
       name: "NodeRules",
       format: "umd",
@@ -16,3 +18,4 @@ export default [
     },
   },
 ];
+
diff --git a/tsconfig.json b/tsconfig.json
index 5f2c939..f3f70de 100644
--- a/tsconfig.json
+++ b/tsconfig.json
@@ -12,6 +12,7 @@
     ],
     "esModuleInterop": true,
     "forceConsistentCasingInFileNames": true,
-    "allowSyntheticDefaultImports": true
+    "allowSyntheticDefaultImports": true,
+    "moduleResolution": "node"
   }
 }
\ No newline at end of file