The Education Rank

polubis 4 months ago

All about JavaScript promises

We'll explore JavaScript Promises, covering their theory, APIs, useful methods, and tricks to master them efficiently

javascript, typescript, promises, language, syntax, theory, full-guide

polubis about 1 month ago

Dependency injection does not need to be complex

We'll dive into the most important topics of Dependency Injection and explore concepts like DI Container, DI Tokens, and Hierarchical DI

angular, react, techniques, clean-code, maintenance, quality, stories

polubis 10 days ago

Everything about barrel exports in JavaScript

Barrel exports are a common pattern in web development for organizing imports. Let’s explore their pros and cons to understand them better

performance, patterns, barrel-exports, webpack, bundlers

polubis about 2 months ago

Putting users first in web development

Let’s dive into some mythical clean code buzzwords, disregarding user needs and pushing refactors that make the application more fragile in the long run

tech-dept, maintenance, react, stories, soft, lightweight, thoughts

polubis 5 days ago

Searching for the Holy Grail in validation world

We'll compare the top 5 validation libraries that are used by the community, and try to determine which one is the best for developers and users

zod, joi, yup, class-validator, superstruct, validation, libraries, comparison

polubis about 1 month ago

Reflections on test coverage in web development

Test coverage is just a metric, an additional piece of information. However, in my opinion, it should not be enforced - I'll give you reasons why

tech-dept, maintenance, jest, code-quality, testing

polubis 3 months ago

Inferring iterables with TypeScript

We'll learn how the infer mechanism works in TypeScript and understand how to infer function arguments and specific array or tuple types

typescript, infer, typesafety, mapped-types, type-magic

polubis 5 months ago

Implementing Queue in JavaScript

We'll build a dynamic queue mechanism to perform async operations in the correct order, following the First in, First Out (FIFO) principle

react, typescript, javascript, data-structures, promises, race-conditions

polubis 6 months ago

Uploading images with Firebase and React

We'll check how to validate images and upload them with React, Firebase, and Cloud Functions

react, firebase, cloud, typescript, javascript, storage

polubis 8 months ago

Folder and file naming conventions go wild

We embark on a journey through the diverse realm of conventions governing folder and file names, pondering the profound impact of their abundance

polubis about 1 month ago

Creating own state manager for React

Let's try to implement our state manager. It will be similar to Zustand, with some changes. All done to understand the useSyncExternalStore hook

react, zustand, state-management, practice, typescript, advanced, hooks

polubis about 2 months ago

Dealing with tech debt in applications

A cohesive guide on how tech debt is created, tracked, and managed, featuring shared perspectives and experiences from various projects

code-quality, maintenance, tech-dept, processes, stories

polubis 2 months ago

Consider using type imports in TypeScript

The import "type" syntax is currently a standard in most project generators. It's good to know the benefits this syntax offers. Let's dive in

typescript, javascript, performance, optimization, daily-development, firebase, maintenance, bundlers

polubis 3 months ago

Ugly relationship between tuples in TypeScript and JavaScript

Let's check what a tuple really is and how it's possible that it works according to the definition in TypeScript, but not in JavaScript

javascript, typescript, typesafety, type-inference, swift, tuples, data-structures, generics

polubis 3 months ago

Command Query Separation principle

Command Query Separation is a handy principle that separates logic into commands, which modify, and queries, which read. We'll explain its impact on the codebase

javascript, typescript, principles, patterns, code-quality, practices, clean-code

polubis 4 months ago

Mediator pattern in TypeScript

The Mediator is a behavioral design pattern that reduces coupling and dependencies between application modules or classes. Let's understand and implement it

design-patterns, mediator, typescript, javascript, practices, relationships, refactors

polubis 4 months ago

Writing a parsing utility for Zod

We'll parse schemas with the "Zod" library, investigate how we can reduce the amount of boilerplate, and make our parsing logic consistent

zod, validation, type-safety, error-management, backend, typescript

polubis 4 months ago

Dealing with property is not matching index signature

Let's solve common error: "Property is not matching index signature". We'll learn how to create type definitions for complex objects

typescript, techniques, type-definitions, common-problems

polubis 5 months ago

Why you should start using Zod

Let's explore what Zod can do and how it simplifies your daily work routine. We'll cover validation, type safety, and the general benefits of using this tool

react, zod, typesafety, react-hook-form, trpc

polubis 5 months ago

Using Zod and TypeScript to write type safe code

We'll implement 100% type safety for some code written in TypeScript. We'll do it without Zod, and later we'll build it up with Zod to see the difference

zod, react, typescript, javascript, typesafety, typeguards