diff --git a/package.json b/package.json
index 1faa3c6..85b174c 100644
--- a/package.json
+++ b/package.json
@@ -5,7 +5,7 @@
 		"detox",
 		"utils"
 	],
-	"version"         : "1.5.0",
+	"version"         : "1.6.0",
 	"homepage"        : "https://github.com/Detox/utils",
 	"author"          : "Nazar Mokrynskyi <nazar@mokrynskyi.com>",
 	"repository"      : {
diff --git a/src/index.js b/src/index.js
index 3da5487..a4705a4 100644
--- a/src/index.js
+++ b/src/index.js
@@ -244,9 +244,9 @@
    *
    * Implementation keeps weak references to make the whole thing fast and efficient
    */
-  function ArrayMap(){
-    var x$;
-    x$ = new Map;
+  function ArrayMap(array){
+    var x$, map, i$, len$, ref$, key, value;
+    x$ = map = new Map;
     x$.get = function(key){
       key = get_unique_key(key);
       return Map.prototype.get.call(this, key);
@@ -275,7 +275,13 @@
         this$['delete'](key);
       });
     };
-    return x$;
+    if (array) {
+      for (i$ = 0, len$ = array.length; i$ < len$; ++i$) {
+        ref$ = array[i$], key = ref$[0], value = ref$[1];
+        map.set(key, value);
+      }
+    }
+    return map;
   }
   /**
    * This is a Set with very interesting property: different arrays with the same contents will be treated as the same array
diff --git a/src/index.ls b/src/index.ls
index e73c5f7..0fb667e 100644
--- a/src/index.ls
+++ b/src/index.ls
@@ -203,8 +203,8 @@ function get_unique_key (key)
  *
  * Implementation keeps weak references to make the whole thing fast and efficient
  */
-function ArrayMap
-	new Map
+function ArrayMap (array)
+	map = new Map
 		..get = (key) ->
 			key	= get_unique_key(key)
 			Map::get.call(@, key)
@@ -224,6 +224,10 @@ function ArrayMap
 		..clear = !->
 			@forEach (, key) !~>
 				@delete(key)
+	if array
+		for [key, value] in array
+			map.set(key, value)
+	map
 # LiveScript doesn't support classes, so we do it in ugly way
 /**
  * This is a Set with very interesting property: different arrays with the same contents will be treated as the same array
diff --git a/src/index.min.js b/src/index.min.js
index e05adfe..fd2b335 100644
--- a/src/index.min.js
+++ b/src/index.min.js
@@ -1,10 +1,10 @@
 /*
  0BSD
 */
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-if(a.length!==b.length)return!1;var d=0;for(c=a.length;d<c;++d){var e=d;var k=a[d];if(k!==b[e])return!1}return!0}function z(a){var b;var c=a.reduce(function(a,b){return a+b.length},0);var d=0;c=new Uint8Array(c);var e=0;for(b=a.length;e<b;++e){var k=a[e];c.set(k,d);d+=k.length}return c}function A(a,b){return setTimeout(b,1E3*a)}function B(a,b){return setInterval(b,1E3*a)}function C(a){if(a instanceof Error)return console.error(a)}function f(a){var b;if((b=m.get(a))&&g.has(b))return b;b=a.join(",");
-return l.has(b)?(b=l.get(b),m.set(a,b),b):a}function q(a){var b;var c=a.join(",");(b=g.get(a))?(++b,g.set(a,b)):(m.set(a,a),l.set(c,a),g.set(a,1))}function r(a){var b=a.join(",");var c=g.get(a);--c;c?g.set(a,c):(l["delete"](b),g["delete"](a))}function D(){var a=new Map;a.get=function(a){a=f(a);return Map.prototype.get.call(this,a)};a.has=function(a){a=f(a);return Map.prototype.has.call(this,a)};a.set=function(a,c){a=f(a);Map.prototype.has.call(this,a)||q(a);return Map.prototype.set.call(this,a,c)};
-a["delete"]=function(a){a=f(a);Map.prototype.has.call(this,a)&&r(a);return Map.prototype["delete"].call(this,a)};a.clear=function(){var a=this;this.forEach(function(b,d){a["delete"](d)})};return a}function E(a){var b,c;var d=b=new Set;d.has=function(a){a=f(a);return Set.prototype.has.call(this,a)};d.add=function(a){a=f(a);Set.prototype.has.call(this,a)||q(a);return Set.prototype.add.call(this,a)};d["delete"]=function(a){a=f(a);Set.prototype.has.call(this,a)&&r(a);return Set.prototype["delete"].call(this,
-a)};d.clear=function(){var a=this;this.forEach(function(b,c){a["delete"](c)})};if(a)for(d=0,c=a.length;d<c;++d){var e=a[d];b.add(e)}return b}function n(a){a=a("123456789ABCDEFGHJKLMNPQRSTUVWXYZabcdefghijkmnopqrstuvwxyz");return{random_bytes:h,random_int:p,pull_random_item_from_array:v,array2hex:w,hex2array:x,string2array:t,array2string:u,are_arrays_equal:y,concat_arrays:z,timeoutSet:A,intervalSet:B,error_handler:C,ArrayMap:D,ArraySet:E,base58_encode:a.encode,base58_decode:a.decode}}var h;"undefined"!==
-typeof crypto?h=function(a){a=new Uint8Array(a);crypto.getRandomValues(a);return a}:h=require("crypto").randomBytes;if("undefined"!==typeof Buffer){var t=function(a){return Buffer.from(a)};var u=function(a){return Buffer.from(a).toString()}}else(function(a,b){t=function(b){return a.encode(b)};u=function(a){return b.decode(a)}}).call(this,new TextEncoder,new TextDecoder);var m=new WeakMap;var l=new Map;var g=new Map;"function"===typeof define&&define.amd?define(["@detox/base-x"],n):"object"===typeof exports?
-module.exports=n(require("@detox/base-x")):this.detox_utils=n(this.base_x)}).call(this);
\ No newline at end of file
+(function(){function p(a,b){var c=k(4);c=(new Uint32Array(c.buffer))[0];return Math.floor(c/Math.pow(2,32)*(b-a+1))+a}function v(a){var b=a.length;if(1===b)return a.pop();b=p(0,b-1);return a.splice(b,1)[0]}function w(a){var b;var c="";var d=0;for(b=a.length;d<b;++d){var e=a[d];c+=e.toString(16).padStart(2,"0")}return c}function x(a){var b;var c=new Uint8Array(a.length/2);var d=0;for(b=c.length;d<b;++d){var e=d;c[e]=parseInt(a.substring(2*e,2*e+2),16)}return c}function y(a,b){var c;if(a===b)return!0;
+if(a.length!==b.length)return!1;var d=0;for(c=a.length;d<c;++d){var e=d;var h=a[d];if(h!==b[e])return!1}return!0}function z(a){var b;var c=a.reduce(function(a,b){return a+b.length},0);var d=0;c=new Uint8Array(c);var e=0;for(b=a.length;e<b;++e){var h=a[e];c.set(h,d);d+=h.length}return c}function A(a,b){return setTimeout(b,1E3*a)}function B(a,b){return setInterval(b,1E3*a)}function C(a){if(a instanceof Error)return console.error(a)}function f(a){var b;if((b=m.get(a))&&g.has(b))return b;b=a.join(",");
+return l.has(b)?(b=l.get(b),m.set(a,b),b):a}function q(a){var b;var c=a.join(",");(b=g.get(a))?(++b,g.set(a,b)):(m.set(a,a),l.set(c,a),g.set(a,1))}function r(a){var b=a.join(",");var c=g.get(a);--c;c?g.set(a,c):(l["delete"](b),g["delete"](a))}function D(a){var b,c;var d=b=new Map;d.get=function(a){a=f(a);return Map.prototype.get.call(this,a)};d.has=function(a){a=f(a);return Map.prototype.has.call(this,a)};d.set=function(a,b){a=f(a);Map.prototype.has.call(this,a)||q(a);return Map.prototype.set.call(this,
+a,b)};d["delete"]=function(a){a=f(a);Map.prototype.has.call(this,a)&&r(a);return Map.prototype["delete"].call(this,a)};d.clear=function(){var a=this;this.forEach(function(b,c){a["delete"](c)})};if(a)for(d=0,c=a.length;d<c;++d){var e=a[d];var h=e[0];e=e[1];b.set(h,e)}return b}function E(a){var b,c;var d=b=new Set;d.has=function(a){a=f(a);return Set.prototype.has.call(this,a)};d.add=function(a){a=f(a);Set.prototype.has.call(this,a)||q(a);return Set.prototype.add.call(this,a)};d["delete"]=function(a){a=
+f(a);Set.prototype.has.call(this,a)&&r(a);return Set.prototype["delete"].call(this,a)};d.clear=function(){var a=this;this.forEach(function(b,c){a["delete"](c)})};if(a)for(d=0,c=a.length;d<c;++d){var e=a[d];b.add(e)}return b}function n(a){a=a("123456789ABCDEFGHJKLMNPQRSTUVWXYZabcdefghijkmnopqrstuvwxyz");return{random_bytes:k,random_int:p,pull_random_item_from_array:v,array2hex:w,hex2array:x,string2array:t,array2string:u,are_arrays_equal:y,concat_arrays:z,timeoutSet:A,intervalSet:B,error_handler:C,
+ArrayMap:D,ArraySet:E,base58_encode:a.encode,base58_decode:a.decode}}var k;"undefined"!==typeof crypto?k=function(a){a=new Uint8Array(a);crypto.getRandomValues(a);return a}:k=require("crypto").randomBytes;if("undefined"!==typeof Buffer){var t=function(a){return Buffer.from(a)};var u=function(a){return Buffer.from(a).toString()}}else(function(a,b){t=function(b){return a.encode(b)};u=function(a){return b.decode(a)}}).call(this,new TextEncoder,new TextDecoder);var m=new WeakMap;var l=new Map;var g=new Map;
+"function"===typeof define&&define.amd?define(["@detox/base-x"],n):"object"===typeof exports?module.exports=n(require("@detox/base-x")):this.detox_utils=n(this.base_x)}).call(this);
\ No newline at end of file