seamless-immutable - npm Package Compare versions

Comparing version 6.0.0 to 6.0.1

bower.json

 {
   "name": "seamless-immutable",
   "main": "src/seamless-immutable.js",
-  "version": "5.1.1",
+  "version": "6.0.1",
   "homepage": "https://github.com/rtfeldman/seamless-immutable",
@@ -6,0 +6,0 @@ "authors": [

package.json

 {
   "name": "seamless-immutable",
-  "version": "6.0.0",
+  "version": "6.0.1",
   "description": "Immutable data structures for JavaScript which are backwards-compatible with normal JS Arrays and Objects.",
@@ -19,2 +19,3 @@ "main": "src/seamless-immutable.js",
     "mocha-lcov-reporter": "1.2.0",
+    "react": "^15.0.1",
     "zuul": "3.9.0"
@@ -21,0 +22,0 @@ },

README.md

@@ -41,2 +41,10 @@ seamless-immutable
 
+## Intentional Abstraction Leaks
+
+By popular demand, functions, dates, and [React](https://facebook.github.io/react/)
+components are treated as immutable even though technically they can be mutated.
+(It turns out that trying to make these immutable leads to more bad things
+than good.) If you call `Immutable()` on any of these, be forewarned: they will
+not actually be immutable!
+
 ## API Overview
@@ -280,2 +288,6 @@
 
+#### 6.0.1
+
+React components are now considered immutable.
+
 #### 6.0.0
@@ -282,0 +294,0 @@

seamless-immutable.development.js

 (function() {
   "use strict";
 
+  // https://github.com/facebook/react/blob/v15.0.1/src/isomorphic/classic/element/ReactElement.js#L21
+  var REACT_ELEMENT_TYPE = typeof Symbol === 'function' && Symbol.for && Symbol.for('react.element');
+  var REACT_ELEMENT_TYPE_FALLBACK = 0xeac7;
+
   function addPropertyTo(target, methodName, value) {
@@ -500,4 +504,12 @@ Object.defineProperty(target, methodName, {
 
+  // Returns true if object is a valid react element
+  // https://github.com/facebook/react/blob/v15.0.1/src/isomorphic/classic/element/ReactElement.js#L326
+  function isReactElement(obj) {
+    return typeof obj === 'object' &&
+           obj !== null &&
+           (obj.$$typeof === REACT_ELEMENT_TYPE_FALLBACK || obj.$$typeof === REACT_ELEMENT_TYPE);
+  }
+
   function Immutable(obj, options, stackRemaining) {
-    if (isImmutable(obj)) {
+    if (isImmutable(obj) || isReactElement(obj)) {
       return obj;
@@ -504,0 +516,0 @@ } else if (obj instanceof Array) {

seamless-immutable.development.min.js

@@ -1,1 +0,1 @@
-/* (c) 2016, Richard Feldman, github.com/rtfeldman/seamless-immutable/blob/master/LICENSE */!function(){"use strict";function a(a,b,c){Object.defineProperty(a,b,{enumerable:!1,configurable:!1,writable:!1,value:c})}function b(b,c){a(b,c,function(){throw new f("The "+c+" method cannot be invoked on an Immutable data structure.")})}function c(b){a(b,D,!0)}function d(a){return"object"==typeof a?null===a||Boolean(Object.getOwnPropertyDescriptor(a,D)):!0}function e(a){return!(null===a||"object"!=typeof a||a instanceof Array||a instanceof Date)}function f(a){var b=new Error(a);return b.__proto__=f,b}function g(a,d){c(a);for(var e in d)d.hasOwnProperty(e)&&b(a,d[e]);return Object.freeze(a),a}function h(b,c){var d=b[c];a(b,c,function(){return C(d.apply(b,arguments))})}function i(a,b){if(a in this&&this[a]===b)return this;var c=p.call(this);return c[a]=C(b),k(c)}function j(a,b){var c=a[0];if(1===a.length)return i.call(this,c,b);var d,e=a.slice(1),f=this[c];if(d="object"==typeof f&&null!==f&&"function"==typeof f.setIn?f.setIn(e,b):j.call(J,e,b),c in this&&f===d)return this;var g=p.call(this);return g[c]=d,k(g)}function k(b){for(var c in H)if(H.hasOwnProperty(c)){var d=H[c];h(b,d)}a(b,"flatMap",n),a(b,"asObject",q),a(b,"asMutable",p),a(b,"set",i),a(b,"setIn",j),a(b,"update",w),a(b,"updateIn",y);for(var e=0,f=b.length;f>e;e++)b[e]=C(b[e]);return g(b,G)}function l(b){return a(b,"asMutable",m),g(b,I)}function m(){return new Date(this.getTime())}function n(a){if(0===arguments.length)return this;var b,c=[],d=this.length;for(b=0;d>b;b++){var e=a(this[b],b,this);e instanceof Array?c.push.apply(c,e):c.push(e)}return k(c)}function o(a){if("undefined"==typeof a&&0===arguments.length)return this;if("function"!=typeof a){var b=a instanceof Array?a:Array.prototype.slice.call(arguments);a=function(a,c){return-1!==b.indexOf(c)}}var c=this.instantiateEmptyObject();for(var d in this)this.hasOwnProperty(d)&&a(this[d],d)===!1&&(c[d]=this[d]);return B(c,{instantiateEmptyObject:this.instantiateEmptyObject})}function p(a){var b,c,d=[];if(a&&a.deep)for(b=0,c=this.length;c>b;b++)d.push(r(this[b]));else for(b=0,c=this.length;c>b;b++)d.push(this[b]);return d}function q(a){"function"!=typeof a&&(a=function(a){return a});var b,c={},d=this.length;for(b=0;d>b;b++){var e=a(this[b],b,this),f=e[0],g=e[1];c[f]=g}return B(c)}function r(a){return!a||"object"!=typeof a||!Object.getOwnPropertyDescriptor(a,D)||a instanceof Date?a:a.asMutable({deep:!0})}function s(a,b){for(var c in a)Object.getOwnPropertyDescriptor(a,c)&&(b[c]=a[c]);return b}function t(a,b){function c(a,c,f){var g=C(c[f]),j=i&&i(a[f],g,b),k=a[f];if(void 0!==d||void 0!==j||!a.hasOwnProperty(f)||g!==k&&g===g){var l;l=j?j:h&&e(k)&&e(g)?k.merge(g,b):g,(k!==l&&l===l||!a.hasOwnProperty(f))&&(void 0===d&&(d=s(a,a.instantiateEmptyObject())),d[f]=l)}}if(0===arguments.length)return this;if(null===a||"object"!=typeof a)throw new TypeError("Immutable#merge can only be invoked with objects or arrays, not "+JSON.stringify(a));var d,f,g=a instanceof Array,h=b&&b.deep,i=b&&b.merger;if(g)for(var j=0;j<a.length;j++){var k=a[j];for(f in k)k.hasOwnProperty(f)&&c(this,k,f)}else for(f in a)Object.getOwnPropertyDescriptor(a,f)&&c(this,a,f);return void 0===d?this:B(d,{instantiateEmptyObject:this.instantiateEmptyObject})}function u(a,b){var c=a[0];if(1===a.length)return v.call(this,c,b);var d,e=a.slice(1),f=this[c];if(d=this.hasOwnProperty(c)&&"object"==typeof f&&null!==f&&"function"==typeof f.setIn?f.setIn(e,b):u.call(K,e,b),this.hasOwnProperty(c)&&f===d)return this;var g=s(this,this.instantiateEmptyObject());return g[c]=d,B(g,this)}function v(a,b){if(this.hasOwnProperty(a)&&this[a]===b)return this;var c=s(this,this.instantiateEmptyObject());return c[a]=C(b),B(c,this)}function w(a,b){var c=Array.prototype.slice.call(arguments,2),d=this[a];return this.set(a,b.apply(d,[d].concat(c)))}function x(a,b){for(var c=0,d=b.length;null!=a&&d>c;c++)a=a[b[c]];return c&&c==d?a:void 0}function y(a,b){var c=Array.prototype.slice.call(arguments,2),d=x(this,a);return this.setIn(a,b.apply(d,[d].concat(c)))}function z(a){var b,c=this.instantiateEmptyObject();if(a&&a.deep)for(b in this)this.hasOwnProperty(b)&&(c[b]=r(this[b]));else for(b in this)this.hasOwnProperty(b)&&(c[b]=this[b]);return c}function A(){return{}}function B(b,c){var d=c&&c.instantiateEmptyObject?c.instantiateEmptyObject:A;return a(b,"merge",t),a(b,"without",o),a(b,"asMutable",z),a(b,"instantiateEmptyObject",d),a(b,"set",v),a(b,"setIn",u),a(b,"update",w),a(b,"updateIn",y),g(b,E)}function C(a,b,c){if(d(a))return a;if(a instanceof Array)return k(a.slice());if(a instanceof Date)return l(new Date(a.getTime()));var e=b&&b.prototype,g=e&&e!==Object.prototype?function(){return Object.create(e)}:A,h=g();if(null==c&&(c=64),0>=c)throw new f("Attempt to construct Immutable from a deeply nested object was detected. 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+/* (c) 2016, Richard Feldman, github.com/rtfeldman/seamless-immutable/blob/master/LICENSE */!function(){"use strict";function a(a,b,c){Object.defineProperty(a,b,{enumerable:!1,configurable:!1,writable:!1,value:c})}function b(b,c){a(b,c,function(){throw new f("The "+c+" method cannot be invoked on an Immutable data structure.")})}function c(b){a(b,G,!0)}function d(a){return"object"==typeof a?null===a||Boolean(Object.getOwnPropertyDescriptor(a,G)):!0}function e(a){return!(null===a||"object"!=typeof a||a instanceof Array||a instanceof Date)}function f(a){var b=new Error(a);return b.__proto__=f,b}function g(a,d){c(a);for(var e in d)d.hasOwnProperty(e)&&b(a,d[e]);return Object.freeze(a),a}function h(b,c){var d=b[c];a(b,c,function(){return D(d.apply(b,arguments))})}function i(a,b){if(a in this&&this[a]===b)return this;var c=p.call(this);return c[a]=D(b),k(c)}function j(a,b){var c=a[0];if(1===a.length)return i.call(this,c,b);var d,e=a.slice(1),f=this[c];if(d="object"==typeof f&&null!==f&&"function"==typeof f.setIn?f.setIn(e,b):j.call(M,e,b),c in this&&f===d)return this;var g=p.call(this);return g[c]=d,k(g)}function k(b){for(var c in K)if(K.hasOwnProperty(c)){var d=K[c];h(b,d)}a(b,"flatMap",n),a(b,"asObject",q),a(b,"asMutable",p),a(b,"set",i),a(b,"setIn",j),a(b,"update",w),a(b,"updateIn",y);for(var e=0,f=b.length;f>e;e++)b[e]=D(b[e]);return g(b,J)}function l(b){return a(b,"asMutable",m),g(b,L)}function m(){return new Date(this.getTime())}function n(a){if(0===arguments.length)return this;var b,c=[],d=this.length;for(b=0;d>b;b++){var e=a(this[b],b,this);e instanceof Array?c.push.apply(c,e):c.push(e)}return k(c)}function o(a){if("undefined"==typeof a&&0===arguments.length)return this;if("function"!=typeof a){var b=a instanceof Array?a:Array.prototype.slice.call(arguments);a=function(a,c){return-1!==b.indexOf(c)}}var c=this.instantiateEmptyObject();for(var d in this)this.hasOwnProperty(d)&&a(this[d],d)===!1&&(c[d]=this[d]);return B(c,{instantiateEmptyObject:this.instantiateEmptyObject})}function p(a){var b,c,d=[];if(a&&a.deep)for(b=0,c=this.length;c>b;b++)d.push(r(this[b]));else for(b=0,c=this.length;c>b;b++)d.push(this[b]);return d}function q(a){"function"!=typeof a&&(a=function(a){return a});var b,c={},d=this.length;for(b=0;d>b;b++){var e=a(this[b],b,this),f=e[0],g=e[1];c[f]=g}return B(c)}function r(a){return!a||"object"!=typeof a||!Object.getOwnPropertyDescriptor(a,G)||a instanceof Date?a:a.asMutable({deep:!0})}function s(a,b){for(var c in a)Object.getOwnPropertyDescriptor(a,c)&&(b[c]=a[c]);return b}function t(a,b){function c(a,c,f){var g=D(c[f]),j=i&&i(a[f],g,b),k=a[f];if(void 0!==d||void 0!==j||!a.hasOwnProperty(f)||g!==k&&g===g){var l;l=j?j:h&&e(k)&&e(g)?k.merge(g,b):g,(k!==l&&l===l||!a.hasOwnProperty(f))&&(void 0===d&&(d=s(a,a.instantiateEmptyObject())),d[f]=l)}}if(0===arguments.length)return this;if(null===a||"object"!=typeof a)throw new TypeError("Immutable#merge can only be invoked with objects or arrays, not "+JSON.stringify(a));var d,f,g=a instanceof Array,h=b&&b.deep,i=b&&b.merger;if(g)for(var j=0;j<a.length;j++){var k=a[j];for(f in k)k.hasOwnProperty(f)&&c(this,k,f)}else for(f in a)Object.getOwnPropertyDescriptor(a,f)&&c(this,a,f);return void 0===d?this:B(d,{instantiateEmptyObject:this.instantiateEmptyObject})}function u(a,b){var c=a[0];if(1===a.length)return v.call(this,c,b);var d,e=a.slice(1),f=this[c];if(d=this.hasOwnProperty(c)&&"object"==typeof f&&null!==f&&"function"==typeof f.setIn?f.setIn(e,b):u.call(N,e,b),this.hasOwnProperty(c)&&f===d)return this;var g=s(this,this.instantiateEmptyObject());return g[c]=d,B(g,this)}function v(a,b){if(this.hasOwnProperty(a)&&this[a]===b)return this;var c=s(this,this.instantiateEmptyObject());return c[a]=D(b),B(c,this)}function w(a,b){var c=Array.prototype.slice.call(arguments,2),d=this[a];return this.set(a,b.apply(d,[d].concat(c)))}function x(a,b){for(var c=0,d=b.length;null!=a&&d>c;c++)a=a[b[c]];return c&&c==d?a:void 0}function y(a,b){var c=Array.prototype.slice.call(arguments,2),d=x(this,a);return this.setIn(a,b.apply(d,[d].concat(c)))}function z(a){var b,c=this.instantiateEmptyObject();if(a&&a.deep)for(b in this)this.hasOwnProperty(b)&&(c[b]=r(this[b]));else for(b in this)this.hasOwnProperty(b)&&(c[b]=this[b]);return c}function A(){return{}}function B(b,c){var d=c&&c.instantiateEmptyObject?c.instantiateEmptyObject:A;return a(b,"merge",t),a(b,"without",o),a(b,"asMutable",z),a(b,"instantiateEmptyObject",d),a(b,"set",v),a(b,"setIn",u),a(b,"update",w),a(b,"updateIn",y),g(b,H)}function C(a){return"object"==typeof a&&null!==a&&(a.$$typeof===F||a.$$typeof===E)}function D(a,b,c){if(d(a)||C(a))return a;if(a instanceof Array)return k(a.slice());if(a instanceof Date)return l(new Date(a.getTime()));var e=b&&b.prototype,g=e&&e!==Object.prototype?function(){return Object.create(e)}:A,h=g();if(null==c&&(c=64),0>=c)throw new f("Attempt to construct Immutable from a deeply nested object was detected. 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seamless-immutable.production.min.js

@@ -1,1 +0,1 @@
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this)this.hasOwnProperty(b)&&(c[b]=q(this[b]));else for(b in this)this.hasOwnProperty(b)&&(c[b]=this[b]);return c}function z(){return{}}function A(b,c){var d=c&&c.instantiateEmptyObject?c.instantiateEmptyObject:z;return a(b,"merge",s),a(b,"without",n),a(b,"asMutable",y),a(b,"instantiateEmptyObject",d),a(b,"set",u),a(b,"setIn",t),a(b,"update",v),a(b,"updateIn",x),f(b,D)}function B(a,b,d){if(c(a))return a;if(a instanceof Array)return j(a.slice());if(a instanceof Date)return k(new Date(a.getTime()));var e=b&&b.prototype,f=e&&e!==Object.prototype?function(){return Object.create(e)}:z,g=f();for(var h in a)Object.getOwnPropertyDescriptor(a,h)&&(g[h]=B(a[h],void 0,d));return A(g,{instantiateEmptyObject:f})}var C="__immutable_invariants_hold",D=["setPrototypeOf"],E=["keys"],F=D.concat(["push","pop","sort","splice","shift","unshift","reverse"]),G=E.concat(["map","filter","slice","concat","reduce","reduceRight"]),H=D.concat(["setDate","setFullYear","setHours","setMilliseconds","setMinutes","setMonth","setSeconds","setTime","setUTCDate","setUTCFullYear","setUTCHours","setUTCMilliseconds","setUTCMinutes","setUTCMonth","setUTCSeconds","setYear"]);e.prototype=Error.prototype;var I=B([]),J=B({});B.isImmutable=c,B.ImmutableError=e,Object.freeze(B),"object"==typeof module?module.exports=B:"object"==typeof exports?exports.Immutable=B:"object"==typeof window?window.Immutable=B:"object"==typeof global&&(global.Immutable=B)}();
+/* (c) 2016, Richard Feldman, github.com/rtfeldman/seamless-immutable/blob/master/LICENSE */!function(){"use strict";function a(a,b,c){Object.defineProperty(a,b,{enumerable:!1,configurable:!1,writable:!1,value:c})}function b(b){a(b,F,!0)}function c(a){return"object"==typeof a?null===a||Boolean(Object.getOwnPropertyDescriptor(a,F)):!0}function d(a){return!(null===a||"object"!=typeof a||a instanceof Array||a instanceof Date)}function e(a){var b=new Error(a);return b.__proto__=e,b}function f(a,c){b(a);return a}function g(b,c){var d=b[c];a(b,c,function(){return C(d.apply(b,arguments))})}function h(a,b){if(a in this&&this[a]===b)return this;var c=o.call(this);return c[a]=C(b),j(c)}function i(a,b){var c=a[0];if(1===a.length)return h.call(this,c,b);var d,e=a.slice(1),f=this[c];if(d="object"==typeof f&&null!==f&&"function"==typeof f.setIn?f.setIn(e,b):i.call(L,e,b),c in this&&f===d)return this;var g=o.call(this);return g[c]=d,j(g)}function j(b){for(var c in J)if(J.hasOwnProperty(c)){var d=J[c];g(b,d)}a(b,"flatMap",m),a(b,"asObject",p),a(b,"asMutable",o),a(b,"set",h),a(b,"setIn",i),a(b,"update",v),a(b,"updateIn",x);for(var e=0,j=b.length;j>e;e++)b[e]=C(b[e]);return f(b,I)}function k(b){return a(b,"asMutable",l),f(b,K)}function l(){return new Date(this.getTime())}function m(a){if(0===arguments.length)return this;var b,c=[],d=this.length;for(b=0;d>b;b++){var e=a(this[b],b,this);e instanceof Array?c.push.apply(c,e):c.push(e)}return j(c)}function n(a){if("undefined"==typeof a&&0===arguments.length)return this;if("function"!=typeof a){var b=a instanceof Array?a:Array.prototype.slice.call(arguments);a=function(a,c){return-1!==b.indexOf(c)}}var c=this.instantiateEmptyObject();for(var d in this)this.hasOwnProperty(d)&&a(this[d],d)===!1&&(c[d]=this[d]);return A(c,{instantiateEmptyObject:this.instantiateEmptyObject})}function o(a){var b,c,d=[];if(a&&a.deep)for(b=0,c=this.length;c>b;b++)d.push(q(this[b]));else for(b=0,c=this.length;c>b;b++)d.push(this[b]);return d}function p(a){"function"!=typeof a&&(a=function(a){return a});var b,c={},d=this.length;for(b=0;d>b;b++){var e=a(this[b],b,this),f=e[0],g=e[1];c[f]=g}return A(c)}function q(a){return!a||"object"!=typeof a||!Object.getOwnPropertyDescriptor(a,F)||a instanceof Date?a:a.asMutable({deep:!0})}function r(a,b){for(var c in a)Object.getOwnPropertyDescriptor(a,c)&&(b[c]=a[c]);return b}function s(a,b){function c(a,c,f){var g=C(c[f]),j=i&&i(a[f],g,b),k=a[f];if(void 0!==e||void 0!==j||!a.hasOwnProperty(f)||g!==k&&g===g){var l;l=j?j:h&&d(k)&&d(g)?k.merge(g,b):g,(k!==l&&l===l||!a.hasOwnProperty(f))&&(void 0===e&&(e=r(a,a.instantiateEmptyObject())),e[f]=l)}}if(0===arguments.length)return this;if(null===a||"object"!=typeof a)throw new TypeError("Immutable#merge can only be invoked with objects or arrays, not "+JSON.stringify(a));var e,f,g=a instanceof Array,h=b&&b.deep,i=b&&b.merger;if(g)for(var j=0;j<a.length;j++){var k=a[j];for(f in k)k.hasOwnProperty(f)&&c(this,k,f)}else for(f in a)Object.getOwnPropertyDescriptor(a,f)&&c(this,a,f);return void 0===e?this:A(e,{instantiateEmptyObject:this.instantiateEmptyObject})}function t(a,b){var c=a[0];if(1===a.length)return u.call(this,c,b);var d,e=a.slice(1),f=this[c];if(d=this.hasOwnProperty(c)&&"object"==typeof f&&null!==f&&"function"==typeof f.setIn?f.setIn(e,b):t.call(M,e,b),this.hasOwnProperty(c)&&f===d)return this;var g=r(this,this.instantiateEmptyObject());return g[c]=d,A(g,this)}function u(a,b){if(this.hasOwnProperty(a)&&this[a]===b)return this;var c=r(this,this.instantiateEmptyObject());return c[a]=C(b),A(c,this)}function v(a,b){var c=Array.prototype.slice.call(arguments,2),d=this[a];return this.set(a,b.apply(d,[d].concat(c)))}function w(a,b){for(var c=0,d=b.length;null!=a&&d>c;c++)a=a[b[c]];return c&&c==d?a:void 0}function x(a,b){var c=Array.prototype.slice.call(arguments,2),d=w(this,a);return this.setIn(a,b.apply(d,[d].concat(c)))}function y(a){var b,c=this.instantiateEmptyObject();if(a&&a.deep)for(b in this)this.hasOwnProperty(b)&&(c[b]=q(this[b]));else for(b in this)this.hasOwnProperty(b)&&(c[b]=this[b]);return c}function z(){return{}}function A(b,c){var d=c&&c.instantiateEmptyObject?c.instantiateEmptyObject:z;return a(b,"merge",s),a(b,"without",n),a(b,"asMutable",y),a(b,"instantiateEmptyObject",d),a(b,"set",u),a(b,"setIn",t),a(b,"update",v),a(b,"updateIn",x),f(b,G)}function B(a){return"object"==typeof a&&null!==a&&(a.$$typeof===E||a.$$typeof===D)}function C(a,b,d){if(c(a)||B(a))return a;if(a instanceof Array)return j(a.slice());if(a instanceof Date)return k(new Date(a.getTime()));var e=b&&b.prototype,f=e&&e!==Object.prototype?function(){return Object.create(e)}:z,g=f();for(var h in a)Object.getOwnPropertyDescriptor(a,h)&&(g[h]=C(a[h],void 0,d));return A(g,{instantiateEmptyObject:f})}var D="function"==typeof Symbol&&Symbol["for"]&&Symbol["for"]("react.element"),E=60103,F="__immutable_invariants_hold",G=["setPrototypeOf"],H=["keys"],I=G.concat(["push","pop","sort","splice","shift","unshift","reverse"]),J=H.concat(["map","filter","slice","concat","reduce","reduceRight"]),K=G.concat(["setDate","setFullYear","setHours","setMilliseconds","setMinutes","setMonth","setSeconds","setTime","setUTCDate","setUTCFullYear","setUTCHours","setUTCMilliseconds","setUTCMinutes","setUTCMonth","setUTCSeconds","setYear"]);e.prototype=Error.prototype;var L=C([]),M=C({});C.isImmutable=c,C.ImmutableError=e,Object.freeze(C),"object"==typeof module?module.exports=C:"object"==typeof exports?exports.Immutable=C:"object"==typeof window?window.Immutable=C:"object"==typeof global&&(global.Immutable=C)}();

src/seamless-immutable.js

 (function() {
   "use strict";
 
+  // https://github.com/facebook/react/blob/v15.0.1/src/isomorphic/classic/element/ReactElement.js#L21
+  var REACT_ELEMENT_TYPE = typeof Symbol === 'function' && Symbol.for && Symbol.for('react.element');
+  var REACT_ELEMENT_TYPE_FALLBACK = 0xeac7;
+
   function addPropertyTo(target, methodName, value) {
@@ -500,4 +504,12 @@ Object.defineProperty(target, methodName, {
 
+  // Returns true if object is a valid react element
+  // https://github.com/facebook/react/blob/v15.0.1/src/isomorphic/classic/element/ReactElement.js#L326
+  function isReactElement(obj) {
+    return typeof obj === 'object' &&
+           obj !== null &&
+           (obj.$$typeof === REACT_ELEMENT_TYPE_FALLBACK || obj.$$typeof === REACT_ELEMENT_TYPE);
+  }
+
   function Immutable(obj, options, stackRemaining) {
-    if (isImmutable(obj)) {
+    if (isImmutable(obj) || isReactElement(obj)) {
       return obj;
@@ -504,0 +516,0 @@ } else if (obj instanceof Array) {

test/Immutable.spec.js

 var JSC          = require("jscheck");
 var assert       = require("chai").assert;
 var _            = require("lodash");
+var React        = require("react");
 var devBuild     = require("../seamless-immutable.development.js");
@@ -102,2 +103,27 @@ var prodBuild    = require("../seamless-immutable.production.min.js");
 
+      it("doesn't modify React classes", function() {
+        var reactClass = React.createClass({
+          render: function() {}
+        });
+        var factory = React.createFactory(reactClass);
+
+        var component = factory();
+        var immutableComponent = Immutable(component);
+
+        assert.typeOf(immutableComponent, 'object');
+        assert.isTrue(React.isValidElement(immutableComponent), 'Immutable component was not a valid react element');
+        assert.isFalse(Immutable.isImmutable(immutableComponent), 'React element should not be immutable');
+        TestUtils.assertJsonEqual(immutableComponent, component);
+      });
+
+      it("doesn't modify React elements", function() {
+        var reactElement = React.createElement('div');
+        var immutableElement = Immutable(reactElement);
+
+        assert.typeOf(immutableElement, 'object');
+        assert.isTrue(React.isValidElement(immutableElement), 'Immutable element was not a valid react element');
+        assert.isFalse(Immutable.isImmutable(immutableElement), 'React element should not be immutable');
+        TestUtils.assertJsonEqual(immutableElement, reactElement);
+      });
+
       it("detects cycles", function() {
@@ -104,0 +130,0 @@ var obj = {};

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Improved metrics

Total package byte prevSize

142903

increased by2.34%

Lines of code

2656

increased by1.57%

Number of lines in readme file

406

increased by3.05%

Worsened metrics

Dev dependency count

14

increased by7.69%

No dependency changes