[BUG] Project-wide Linting errors

[hxrshxz]

Description

Right now, running npm run lint throws a lot of errors and warnings across the codebase. This issue is here to track and organize the work needed to clean them up so we can fix all the linting errors

Current Behavior

When npm run lint is executed, 176 problems (6 errors and 170 warnings).

Expected Behavior

What should be happening?
The npm run lint command should complete successfully with 0 errors and 0 warnings.

Steps to Reproduce

1.Run npm run lint in the terminal.
2. A lot of linting error appears

Screenshots

Linting Cleanup Checklist

• cart-invoice-card.tsx
• display-products.tsx
• product-invoice-card.tsx
• timeout.ts
• fetch-service.ts
• types.ts
• marketplace.tsx
• cache-service.ts
• nostr-manager.ts
• nostr-signer.ts
• context.ts
• _app.tsx
• keypress-handler.ts
• chat-button.test.tsx
• message-feed.tsx
• messages.test.tsx
• marketplace.test.tsx
• messages.tsx
• chat-panel.test.tsx
• chat-message.tsx
• chat-button.tsx
• my-listings.test.tsx
• product-form.tsx
• shop-profile-form.test.tsx
• user-profile-form.test.tsx
• shop-profile-form.tsx
• user-profile-form.tsx
• image-carousel.test.tsx
• migration-prompt-modal.test.tsx
• product-card.test.tsx
• request-passphrase-modal.test.tsx
• shopstr-slider.test.tsx
• shopstr-switch.test.tsx
• volume-selector.test.tsx
• checkout-card.tsx
• location-dropdown.test.tsx
• country-dropdown.tsx
• location-dropdown.tsx
• file-uploader.tsx
• nostr-context-provider.tsx
• profile-avatart.test.tsx
• profile-dropdown.test.tsx
• mint-button.test.tsx
• index.tsx
• shop-profile.tsx
• user-profile.tsx
• encryption-migration.test.ts
• nostr-manager.test.ts
• encryption-migration.ts
• nostr-nip07-signer.test.ts
• nostr-nip46-signer.test.ts
• nostr-nsec-signer.test.ts
• nostr-nip07-signer.ts
• nostr-nip46-signer.ts
• nostr-nsec-signer.ts