This post explains how to configure cssnano when you have to support IE 11, and your CSS contains hacks targeted at it.
IE 11 and cssnano
TypeScript, preact, and unistore
When I tried to use unistore instead of redux in one of my pet projects, I discovered that its TypeScript typings are not very accurate. In this post I try to come up with better typings for unistore’s connect() function.
preact-cli 3 and sass-loader 8
When using sass-loader 8.0.0 with preact-cli 3.0.0-next.19, preact build fails with an error: Invalid options object. Sass Loader has been initialised using an options object that does not match the API schema. options has an unknown property ‘includePaths’. Quick fix: use sass-loader 7.3.1.
Store FormData object in localStorage
This post describes how to serialize a FormData object to JSON and how to fill the form back with the serialized data.
How to Enable Two Factor Authentication with pam-u2f
We live in a world where data is an incredibly valuable currency, and you are always at risk of loss. Because of this, you must do everything you can to ensure what you hold on your desktops and servers is safe. If you are looking to lock down your Linux servers and desktops as tight as possible, you should consider to make use of two-factor authentication. This article explains how to configure two factor authentication using pam_u2f.
CORS Proxy by Means of nginx
A CORS proxy is a service that allows sites to access resources from other websites, without having to own that website in case when no Access-Control-Allow-Origin header is present on the requested resource. This article shows how to create one with the help of nginx and without writing a single line of code.
SQL Diff Using SQLite Session API
SQLite Session Extension provides a convenient way to create “diffs” between two versions of a table. These “diffs” are binary and are usually much more compact than their SQL counterparts. This article shows how to create and apply such “diffs” to tables.
Mapping OpenSSL Cipher Suite Names to RFC Names
Correspondence between OpenSSL cipher suite names and RFC names taken from http://testssl.sh/openssl-rfc.mapping.html.
Signal Desktop and Failed to Map Segment from Shared Object Error
Signal is a great encrypted communications application built upon Electron framework. Couple of months ago I faced the issue that Signal had failed to start showing a message like this: “Uncaught Exception: Error: /tmp/.org.chromium.Chromium.j4ITUv: failed to map segment from shared object”.
Here is the solution.
How Slow Are C++ Exceptions?
In Systematic Error Handling in C++ Andrei Alexandrescu claims that C++ exceptions are very slow. And though I have no doubts because I know the internals of exception handling, it is interesting to see some proofs yourself by benchmarking how fast or slow exceptions are.