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$ curl repovive.com/roadmaps/frontend-system-design-interview-prep/modal-system-design/component-architecture

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Component Architecture - Modal System Design | Frontend System Design Interview Prep | Repovive

Repovive.

Frontend System Design Interview Prep17 sections · 206 units12h total

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Component Architecture

Modal system structure

Design a flexible modal system.

Component tree:

ModalProvider (context)
├── ModalContainer (portal target)
│   └── ModalWrapper (per modal)
│       ├── Backdrop
│       └── ModalContent
│           ├── ModalHeader
│           ├── ModalBody
│           └── ModalFooter

API design:

const { openModal, closeModal } = useModal();

openModal(<ConfirmDialog onConfirm={handleConfirm} />);

Portal rendering: Render modals outside component tree to avoid z-index issues.