Michał Załęcki – Medium

Michał Załęcki

Michał Załęcki

TypeScript: Template Literal Types

Literal types in TypeScript allow for narrowing down the type to the exact value. You can communicate in the type system that the value…

Nov 24, 2020

TypeScript: Template Literal Types

Nov 24, 2020

Michał Załęcki

Review: Writing for Software Developers by Philip Kiely

In September, I took two weeks off to enjoy some time in nature before the rainy autumn hits. Apart from the time for relaxation, the…

Nov 24, 2020

Review: Writing for Software Developers by Philip Kiely

Nov 24, 2020

Michał Załęcki

Fighting Legacy JavaScript Code

When legacy code is giving you a hard time, it’s a good time to learn yourself a few new tricks. You might not think there’s a method to…

Oct 7, 2020

Fighting Legacy JavaScript Code

Oct 7, 2020

Michał Załęcki
in
The Startup

Do Not Relay on NODE_ENV. Hygiene of Environment Variables

Learn how to set up a server to allow for a secure SFTP file transfer without giving users access to the shell

Jan 5, 2020

Do Not Relay on NODE_ENV. Hygiene of Environment Variables

Jan 5, 2020

Michał Załęcki

How to Set up a Secure SFTP Server

Learn how to set up a server to allow for a secure SFTP file transfer without giving users access to the shell

Jan 5, 2020

How to Set up a Secure SFTP Server

Jan 5, 2020

Michał Załęcki
in
Level Up Coding

Generate Unique Id in the Browser Without a Library

Random, unique value to use on the client-side. Spare your users some additional bytes

Jan 5, 2020

Generate Unique Id in the Browser Without a Library

Jan 5, 2020

Michał Załęcki

Just Enough Kubernetes for JavaScript Developers

Straightforward setup of a Kubernetes cluster for multiple apps, databases, with HTTPS and other k8s goodies

Jan 5, 2020

Just Enough Kubernetes for JavaScript Developers

Jan 5, 2020

Michał Załęcki

Upload source maps to Rollbar

Automate uploading source maps pre-deploy to Rollbar with a shell script

Jan 5, 2020

Upload source maps to Rollbar

Jan 5, 2020

Michał Załęcki
in
Tooploox

Bridging Static and Runtime Types with io-ts

How to build up confidence in your TypeScript application by enforcing data types from external sources like REST API

Apr 26, 2019

Bridging Static and Runtime Types with io-ts

Apr 26, 2019

Michał Załęcki
in
WarsawJS

An elegant solution for handling errors in Express

Use Boom and Joi with Express for lean controllers and ability to return pretty formatted HTTP errors

Dec 8, 2018

An elegant solution for handling errors in Express

Dec 8, 2018

Michał Załęcki

Michał Załęcki

Senior Software Engineer at @Hotjar. I particularly enjoy TypeScript. I focus on unit testing, software design, and architecture.

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