TypeScript • Topic Section2 scenarios

TypeScript from Scratch & Strict Architecture

Project setup, tsconfig strict 2026, path aliases, and ESLint v9

Fundamental start in TypeScript: environment initialization, strict compiler flags (noUncheckedIndexedAccess, isolatedDeclarations), path aliases, and linting.

tsconfig strictPath AliasesisolatedDeclarationsESLint v9 Flattsc-watch

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+100 XP~75 min

AI Technical InterviewPractice Senior interview questions

Interactive Lab Outage SimulatorHands-on debugging and incident response

Engineering RoadmapTrack mastery milestones

Practical Section Scenarios

2 scenarios available

Difficulty level:

Junior35 min+50 XP

TypeScript Project Setup from Scratch: tsconfig strict 2026, path aliases, ESLint v9 flat config, and tsc-watch

Пошаговый производственный рецепт инициализации строгого TypeScript-проекта с нуля: оптимальная конфигурация tsconfig.json (noUncheckedIndexedAccess, exactOptionalPropertyTypes, isolatedDeclarations), настройка абсолютных путей @/*, современный Flat Config ESLint v9 и автоматический вотчер компилятора.

TypeScript 5.8+ESLint 9 (Flat Config)Node.js 24 LTSpnpmtsc-watch

Production ScenarioOpen workflow

Middle40 min+50 XP

Discriminated Unions and Custom Type Guards: Making Impossible States Impossible and Exhaustiveness Checking

Глубокое освоение выразительной системы типов TypeScript: проектирование предметной области через размеченные объединения (Discriminated Unions), исчерпывающая проверка ветвей через тип never, создание надежных предикатов типов (arg is Type) и assertion-функций для исключения невозможных состояний.

TypeScript 5.8+Tagged UnionsUser-Defined Type GuardsAssertion Functions

Production ScenarioOpen workflow

Other sections in TypeScript

Explore adjacent topics for comprehensive specialization mastery.

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2 scenarios

Advanced TypeScript: Generics & Validation

Type-safe contracts, Generic API client, Result<T, E>, and Zod DTO

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