Fix logical operator “!” and “!==“ for twig

Author: Macavity

src/Compiler.php

@@ -398,6 +398,8 @@ protected function sanitizeCondition(string $condition)
     {
         $condition = str_replace('&&', 'and', $condition);
         $condition = str_replace('||', 'or', $condition);
+        $condition = str_replace('!==', '!=', $condition);
+        $condition = preg_replace('/!([^=])/', 'not $1', $condition);
 
         foreach (Replacements::getConstants() as $constant => $value) {
             $condition = str_replace($value, Replacements::getSanitizedConstant($constant), $condition);

tests/fixtures/vue-if/simple-if-2.twig

@@ -2,4 +2,7 @@
   {% if someVar %}
     <div>Text</div>
   {% endif %}
+  {% if not someVar and mobile != true %}
+    <div>Mobile</div>
+  {% endif %}
 </div>

tests/fixtures/vue-if/simple-if-2.vue

@@ -1,5 +1,6 @@
 <template>
   <div>
     <div v-if="someVar">Text</div>
+    <div v-if="!someVar && mobile !== true">Mobile</div>
   </div>
 </template>