inoxjs: require the classt list of components to start with a capital…

…ized class name

internal/inoxjs/inox-component.js

@@ -101,6 +101,11 @@
  function initComponent(arg) {
  const componentRoot = arg.element ?? /** @type {HTMLElement} */(me())
 
+ if(! isComponentRootElement(componentRoot)){
+ console.error(componentRoot, 'is not a valid component root element, class list should start with a capitalized class name')
+ return
+ }
+
  //register signals
 
  const signals = arg.signals ?? {}
@@ -251,8 +256,6 @@
  }
  }
  }
-
- console.log(node)
  })
 
  //rendering
@@ -518,7 +521,14 @@
  * @returns {boolean}
  */
  function isComponentRootElement(node) {
- return (node instanceof HTMLElement) && Array.from(node.classList).some(className => className[0].toUpperCase() == className[0])
+ if(!(node instanceof HTMLElement)) {
+ return false
+ } 
+ const firstClassName = node.classList.item(0)
+ if(firstClassName === null){
+ return false
+ }
+ return (/[A-Z]/).test(firstClassName[0])
  }
 
  /**