fix(toHaveProperty): add a fix for .toHaveProperty('')

packages/expect/src/utils.ts

@@ -45,7 +45,11 @@ export const getPath = (
   propertyPath: string | Array<string>,
 ): GetPath => {
   if (!Array.isArray(propertyPath)) {
+    console.log('before', {propertyPath});
+
     propertyPath = pathAsArray(propertyPath);
+
+    console.log('after', {propertyPath});
   }
 
   if (propertyPath.length) {
@@ -373,9 +377,15 @@ export const partition = <T>(
 };
 
 export const pathAsArray = (propertyPath: string): Array<any> => {
+  const properties: Array<string> = [];
+
+  if (propertyPath === '') {
+    properties.push('');
+    return properties;
+  }
+
   // will match everything that's not a dot or a bracket, and "" for consecutive dots.
   const pattern = RegExp('[^.[\\]]+|(?=(?:\\.)(?:\\.|$))', 'g');
-  const properties: Array<string> = [];
 
   // Because the regex won't match a dot in the beginning of the path, if present.
   if (propertyPath[0] === '.') {