Hello there,
Having over 6 years of expertise in the website and mobile app development field, I'm Anamika Tiwari, an enthusiastic and highly skilled freelancer. I have a strong command over JavaScript, jQuery, and CSS, which are all vital to accomplishing your project of creating a customizable JS wrapper for the diagram component with ease. I've previously handled complex tasks that involve effective data handling and domain modeling, which closely aligns with your requirement of converting saving-loading to OOP format in Javascript types.
Moreover, my proficiency in utilizing frameworks like NodeJS, PHP, Angular, and ReactJS complements my understanding of developing high-level functions for adding/deleting diagram elements. As you mentioned about moving connections up a level for single access from the wrapper, my competence in handling interconnections through backend-looping(API/Database) actions can efficiently aid that requirement as well.
I'm confident that my skills and experience make me a great fit for your project. Let's talk more about how I can help you.
Best regards,
Lisa