Fix case where false resulted in a skipped node

Author: wooorm

lib/index.js

@@ -160,7 +160,9 @@ export const findAndReplace =
             value = value.length > 0 ? {type: 'text', value} : undefined
           }
 
-          if (value !== false) {
+          if (value === false) {
+            position = undefined
+          } else {
             if (start !== position) {
               nodes.push({
                 type: 'text',