do not allow re-use of binding

CHANGELOG.md

@@ -1,6 +1,10 @@
 # Changelog
 
 
+### 1.1.2 (2016-07-09)
+- Fix: disallow re-use of bindings, it doesn't work anyways.
+
+
 ### 1.1.1 (2016-07-05)
 - Fix: error messaging in feature detection.
 

lib/index.js

@@ -52,6 +52,9 @@ function simulacra (obj, def) {
   if (!isArray(def))
     throw new TypeError('Second argument must be an array.')
 
+  if (isProcessedKey in def)
+    throw new Error('Can not re-use binding.')
+
   if (typeof def[0] === 'string') {
     query = def[0]
     def[0] = document.querySelector(query)
@@ -188,6 +191,7 @@ function featureCheck (globalScope) {
     // ECMAScript features.
     [ Object, 'defineProperty' ],
     [ Object, 'freeze' ],
+    [ Object, 'isFrozen' ],
     [ WeakMap ],
 
     // DOM features.

package.json

@@ -1,7 +1,7 @@
 {
   "name": "simulacra",
   "description": "One-way data binding for web applications.",
-  "version": "1.1.1",
+  "version": "1.1.2",
   "license": "MIT",
   "author": {
     "email": "0x8890@airmail.cc",
@@ -33,11 +33,11 @@
     "browserify-istanbul": "^2.0.0",
     "cssnano": "^3.7.1",
     "domino": "^1.0.25",
-    "eslint": "^3.0.0",
+    "eslint": "^3.0.1",
     "eslint-config-boss": "^1.0.4",
     "fs-extra": "^0.30.0",
     "highlight.js": "^9.5.0",
-    "html-minifier": "^2.1.7",
+    "html-minifier": "^3.0.1",
     "istanbul": "^0.4.4",
     "marked": "^0.3.5",
     "mkdirp": "^0.5.1",

test/index.js

@@ -3,6 +3,8 @@
 var tapdance = require('tapdance')
 var comment = tapdance.comment
 var ok = tapdance.ok
+var pass = tapdance.pass
+var fail = tapdance.fail
 var run = tapdance.run
 
 var simulacra = require('../lib')
@@ -129,12 +131,14 @@ run(function () {
   ok(outlet.querySelector('.size').textContent === 'XXL',
     'continues to work after error')
 
-  comment('test rebinding')
-  outlet.innerHTML = ''
-  outlet.appendChild(simulacra({
-    name: 'babby'
-  }, bindings))
-  ok(outlet.textContent === 'babby!', 'rebinding works')
+  comment('rebinding should fail')
+  try {
+    simulacra({}, bindings)
+    fail('should have failed')
+  }
+  catch (error) {
+    pass('rebinding does not work')
+  }
 })