Name: Wrocław TypeScript #8: The One with Everything
Start: 2019-10-30T18:30:00+01:00
End: 2019-10-30T20:00:00+01:00
Location: The Place

TypeScript 3.7 is so big it should have its own meetup group. Let's dissect the upcoming features together.

🔊 Talks

Evan Seaward: Dive into Optional Chaining and Nullish Coalescing
-------------------------------------------------------------------------------------------

After entering stage 3 of proposal Optional Chaining and Nullish Coalescing has arrived in TypeScript 3.7, let's have a deep dive into these new features and explore how this will improve your code.

About Evan:

Senior Front-end Aussie developer working at Fox Heap here in Wrocław, currently developing in React and Typescript.

- https://twitter.com/seawardevan

Piotr Monwid-Olechnowicz: Power of Preconditions: Why assertion signatures are huge for me
-----------------------------------------------------------------------------------------------------------

TypeScript 3.7 brings us an amazing tool to concisely write preconditions that can't be described in a function signature. With assertion signatures we can get rid of these ugly "if (not cool) throw new Error("totally not cool")" blocks.

We're gonna talk about partial and total functions, returning vs throwing errors and I'll show you how assertion signatures make my React code safer.

About Piotr:

I write stupid stuff fast and I trust that the type system will protect me from myself.

- https://twitter.com/hasparus

Aleksandra Sikora: Persistent data structures thanks to recursive type aliases
----------------------------------------------------------------------------------------------------------

It's well known that mutability is evil and often troublesome,
but you can stop shallow copying arrays (or god-forbid deep copying)
every time you want to change them.

About Aleksandra:

Full-stack developer at Ingrid. Working with Go and TypeScript. Interested in functional programming.

- https://twitter.com/aleksandrasays

📜 Code of Conduct:
https://github.com/WrocTypeScript/talks/blob/master/CODE_OF_CONDUCT.md

Damian Paszkowski

Karol Majewski

Krzysztof Żuraw

Aleksandra Sikora

Piotr Monwid-Olechnowicz

Wrocław TypeScript

Technology

New Technology

Computer Programming

Open Source

JavaScript Frameworks

Software Development

JavaScript

Web Development

Front-end Development

Typescript

Wrocław TypeScript #8: The One with Everything

The Place

Share

What does your past 12 months of Meetup reveal about you? It's time to relive your personal highlights!

Don't miss your <highlight>2025 recap!</highlight>

Wrocław TypeScript

Wrocław TypeScript #8: The One with Everything

Wrocław TypeScript

Details

TypeScript 3.7 is so big it should have its own meetup group. Let's dissect the upcoming features together.

🔊 Talks

Evan Seaward: Dive into Optional Chaining and Nullish Coalescing

Members are also interested in

Wrocław TypeScript #8: The One with Everything

Wrocław TypeScript

Details

TypeScript 3.7 is so big it should have its own meetup group. Let's dissect the upcoming features together. 🔊 Talks Evan Seaward: Dive into Optional Chaining and Nullish Coalescing

Members are also interested in

TypeScript 3.7 is so big it should have its own meetup group. Let's dissect the upcoming features together.

🔊 Talks

Evan Seaward: Dive into Optional Chaining and Nullish Coalescing