feat(assertion): Add toBeDefined assertion method

ts/00_commitinfo_data.ts

@@ -1,8 +1,8 @@
 /**
- * autocreated commitinfo by @pushrocks/commitinfo
+ * autocreated commitinfo by @push.rocks/commitinfo
  */
 export const commitinfo = {
   name: '@push.rocks/smartexpect',
-  version: '1.0.21',
-  description: 'manage expectations in code'
+  version: '1.1.0',
+  description: 'A testing library to manage expectations in code, offering both synchronous and asynchronous assertion methods.'
 }

ts/smartexpect.classes.assertion.ts

@@ -71,6 +71,22 @@ export class Assertion {
     }
   }
 
+  /**
+   * checks if the given object is defined
+   */
+  public toBeDefined() {
+    return this.runCheck(() => {
+      if (this.getObjectToTestReference() === undefined) {
+        throw new Error(
+          `${this.baseReference} with drill down ${this.propertyDrillDown} is not defined`
+        );
+      }
+    });
+  }
+
+  /**
+   * checks if the given object is not defined
+   */
   public toBeTypeofString() {
     return this.runCheck(() => {
       if (typeof this.getObjectToTestReference() !== 'string') {