in the beginning

arbor_src/hermetic.js

@@ -0,0 +1,48 @@
+//
+// hermetic.js
+//
+// the parts of jquery i can't live without (e.g., while in a web worker)
+//
+$ = {
+  each:function(obj, callback){
+    if ($.isArray(obj)){
+      for (var i=0, j=obj.length; i<j; i++) callback(i, obj[i])
+    }else{
+      for (var k in obj) callback(k, obj[k])
+    }
+  },
+  map:function(arr, fn){
+    var out = []
+    $.each(arr, function(i, elt){
+      var result = fn(elt)
+      if (result!==undefined) out.push(result)
+    })
+    return out
+  },
+  extend:function(dst, src){
+    if (typeof src!='object') return dst
+    
+    for (var k in src){
+      if (src.hasOwnProperty(k)) dst[k] = src[k]
+    }
+    
+    return dst
+  },
+  isArray:function(obj){
+    if (!obj) return false
+    return (obj.constructor.toString().indexOf("Array") != -1)
+  },
+
+  inArray:function(elt, arr){
+    for (var i=0, j=arr.length; i<j; i++) if (arr[i]===elt) return i;
+    return -1
+  },
+  isEmptyObject:function(obj){
+    if (typeof obj!=='object') return false
+    var isEmpty = true
+    $.each(obj, function(k, elt){
+      isEmpty = false
+    })
+    return isEmpty
+  },
+}