Ivan Hofer

Svelte ♥ TypeScript and so will you

The Svelte Context API can be error-prone. Discover a powerful pattern using object references as keys to make it completely type-safe.

Svelte ♥ TypeScript and so will you
#1about 3 minutes

The benefits of using TypeScript with Svelte

TypeScript provides essential static type checking for long-running Svelte projects, improving maintainability and collaboration among developers.

#2about 3 minutes

Setting up a SvelteKit project with TypeScript

Initialize a new SvelteKit application with TypeScript support and review the key configuration files like tsconfig.json and svelte.config.js.

#3about 3 minutes

Defining and using typed component props

Add the `lang="ts"` attribute to script tags and define typed props to get auto-completion and error checking when using components.

#4about 2 minutes

Running project-wide type checks with svelte-check

Use the `svelte-check` command in watch mode or in a CI/CD pipeline to perform static type analysis across your entire Svelte project.

#5about 2 minutes

Handling optional props and discriminated unions

Make component props optional by assigning a default value and safely handle complex data structures like discriminated unions in your templates.

#6about 3 minutes

Creating generic components with `$$Generic`

Use the special `$$Generic` type to create reusable Svelte components that can work with multiple data types while maintaining full type safety.

#7about 4 minutes

Typing passthrough props with `$$restProps` and `$$Props`

Build wrapper components like custom buttons that accept standard HTML attributes with full type safety by using `$$restProps` and `$$Props`.

#8about 3 minutes

Implementing a type-safe Svelte context

Overcome the limitations of Svelte's default context API by creating a typed wrapper that eliminates the need for string keys and provides type inference.

#9about 2 minutes

Type-safe routing and endpoints in SvelteKit

Leverage SvelteKit's auto-generated types for file-based routes to create type-safe API endpoints with validated dynamic URL parameters.

#10about 2 minutes

Resources for learning Svelte with TypeScript

Find additional learning resources, including a dedicated GitHub repository with examples, to continue exploring Svelte and TypeScript integration.

Related jobs
Jobs that call for the skills explored in this talk.

Angular Developer

Picnic Technologies B.V.
Amsterdam, Netherlands

Intermediate
Senior

Matching moments

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30:50 MIN

How to convince your team to adopt TypeScript

4 Steps from JavaScript to TypeScript

Final thoughts and review of developing with Svelte
42:09 MIN

Final thoughts and review of developing with Svelte

On tour with heroes == Moving from Angular to WebComponents

Using Web Components and Svelte as an alternative
04:03 MIN

Using Web Components and Svelte as an alternative

On tour with heroes == Moving from Angular to WebComponents

Why TypeScript is essential for building large applications
22:24 MIN

Why TypeScript is essential for building large applications

Building a large, complex product from the ground up with typescript & Atomic Design:lessons learned

Improving the in-editor experience with better types
08:23 MIN

Improving the in-editor experience with better types

Why pair programming is the best usability testing tool for developer focused products?

Building the UI with Svelte and a Convex backend
03:44 MIN

Building the UI with Svelte and a Convex backend

How to Automate your Murder Mystery

Strategies for migrating large codebases to TypeScript
32:12 MIN

Strategies for migrating large codebases to TypeScript

WeAreDevelopers LIVE - Whats Nuxt and Next for app development, 20 years AJAX and more

Evaluating the strengths and limitations of TypeScript
38:46 MIN

Evaluating the strengths and limitations of TypeScript

Don't compromise on speedy delivery nor type-safety by choosing TypeScript

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