Friday, October 22, 2021

Visual Studio Code + TypeScript + React - how to start in 10 minutes (fall 2021 tutorial)

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Just a short tutorial on how to start your adventure with TypeScript + React with Visual Studio Code. Without further ado: Install n...
Wednesday, October 20, 2021

IndexedDB can possibly fail on FireFox

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A couple of minutes and a good coffee spent on an issue. The idb , a wrapper over IndexedDB was failing silently. An isolated demo was luck...
Friday, October 1, 2021

tiny-totp.js, a tiny TOTP javascript implementation

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Just published the tiny-totp.js code on Github. It's super tiny Javascript RFC6328 implementation. If you wonder what's that, it...
Thursday, August 26, 2021

TypeScript puzzle No.1 (intermediate)

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There's a callable type definition type Callable = { description: string; (a: string): string; } It's pretty obvious tha...
Friday, July 30, 2021

Javascript Puzzle No.2

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Given the code let working = { foo: function() { console.log("working"); } }; let notworking = { foo() { console....
Friday, June 18, 2021

PrincipalContext::ValidateCredentials doesn't always work like you think it should (false positives!)

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We've recently stumbled upon a nasty issue with PrincipalContext::ValidateCredentials , the one you could use to authenticate users aga...
Tuesday, April 27, 2021

Microsoft Teams loads but renders a blank (white) window

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Today I've spent like an hour trying to fix a sudden issue - Teams loads, the loading window shows correctly but then, instead of a nor...