Lars Hupel

Advanced Typing in TypeScript

What if your types could track data transformations at compile time? Learn the advanced TypeScript patterns that make rock-solid, dynamic APIs possible.

Advanced Typing in TypeScript
#1about 4 minutes

Understanding the core design principles of TypeScript

TypeScript's design is based on core tenets like structural typing, powerful type inference, and support for common JavaScript patterns.

#2about 6 minutes

A practical example of typing the DOM API

The `addEventListener` method is typed using string literal types, the `keyof` operator, and an event map interface to provide type safety for different event types.

#3about 5 minutes

Designing a type-safe data pipeline inspired by Pandas

A type-safe data processing API can be designed to overcome the runtime errors common in libraries like Pandas by tracking the shape of data frames.

#4about 4 minutes

Using generic record types for table columns

The `Table` interface uses a generic type parameter constrained to `Record<string, any>` to represent named columns with specific types.

#5about 7 minutes

Implementing and demonstrating the data pipeline API

A live demo showcases the API's type inference capabilities for selecting, computing, and dropping columns from a table without explicit type annotations.

#6about 3 minutes

Answering questions on partial types and inference

The Q&A covers handling partial objects in constructors and demonstrates how TypeScript correctly infers the types of newly computed columns.

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Matching moments

An introduction to TypeScript's core type system
06:53 MIN

An introduction to TypeScript's core type system

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

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Understanding the power and popularity of TypeScript
02:11 MIN

Understanding the power and popularity of TypeScript

End-to-End TypeScript: Completing the Modern Development Stack

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Why TypeScript is essential for building large applications
03:47 MIN

Why TypeScript is essential for building large applications

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

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Understanding TypeScript's origins and role in scalability
02:37 MIN

Understanding TypeScript's origins and role in scalability

All you need is types

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Understanding TypeScript's type-level programming capabilities
06:35 MIN

Understanding TypeScript's type-level programming capabilities

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

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Final takeaways for building modern TypeScript applications
01:21 MIN

Final takeaways for building modern TypeScript applications

End-to-End TypeScript: Completing the Modern Development Stack

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Exploring the key benefits of adopting TypeScript
01:56 MIN

Exploring the key benefits of adopting TypeScript

Do TypeScript without TypeScript

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Evaluating the strengths and limitations of TypeScript
04:07 MIN

Evaluating the strengths and limitations of TypeScript

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