refactor(runtime-dom): avoid unnecessary typeof checks during props patching

packages/runtime-dom/src/modules/props.ts

@@ -24,6 +24,7 @@ export function patchDOMProp(
     el[key] = value == null ? '' : value
     return
   }
+
   if (key === 'value' && el.tagName !== 'PROGRESS') {
     // store value as _value as well since
     // non-string values will be stringified.
@@ -34,18 +35,26 @@ export function patchDOMProp(
     }
     return
   }
-  if (value === '' && typeof el[key] === 'boolean') {
+
+  if (value === '' || value == null) {
+    const type = typeof el[key]
+    if (value === '' && type === 'boolean') {
       // e.g. <select multiple> compiles to { multiple: '' }
       el[key] = true
-  } else if (value == null && typeof el[key] === 'string') {
+      return
+    } else if (value == null && type === 'string') {
       // e.g. <div :id="null">
       el[key] = ''
       el.removeAttribute(key)
-  } else if ((value == null || value === '') && typeof el[key] === 'number') {
+      return
+    } else if (type === 'number') {
       // e.g. <img :width="null">
       el[key] = 0
       el.removeAttribute(key)
-  } else {
+      return
+    }
+  }
+
   // some properties perform value validation and throw
   try {
     el[key] = value
@@ -59,4 +68,3 @@ export function patchDOMProp(
     }
   }
 }
-}