TypeScript2 min read
Branded Types: Safer IDs, Money, and Domain Values
Use branded (nominal-ish) types to prevent mixing IDs and domain values, and learn safer alternatives to ‘just cast it’.
#Advanced Types#Interviews
Mar 01, 2026Practice
Practice
Frontend interview articles
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75 articles · page 4 of 9
TypeScript2 min read
Template Literal Types for Safe Routes, Events, and Keys
Use template literal types to make strings type-safe: route patterns, event names, CSS variables, and i18n keys—with realistic examples.
#Advanced Types#Interviews
Mar 01, 2026Practice
TypeScript2 min read
Strongly Typed pipe()/compose() (Variadic Tuples vs Overloads)
How to type function pipelines like a library author: overloads, variadic tuples, inference boundaries, and what interviewers really want to see.
#Advanced Types#Interviews
Mar 01, 2026Practice
TypeScript3 min read
Conditional Exports (node/browser) + Correct Types
How to publish different entry points for Node vs browser (or edge) using package.json exports conditions, without breaking TypeScript consumers.
#Modules#Tooling
Mar 01, 2026Practice
TypeScript3 min read
Path Aliases That Don’t Break Production (@/ Without Regret)
How to use tsconfig paths safely across Next.js, bundlers, Node scripts, and tsc builds—without ‘works locally, fails in prod’.
#Tooling#Modules
Mar 01, 2026Practice
TypeScript3 min read
moduleResolution: NodeNext vs Bundler (and Why It Breaks Builds)
How TypeScript resolves imports in modern toolchains, when to use NodeNext vs bundler, and how flags like verbatimModuleSyntax affect real projects.
#Modules#Tooling
Mar 01, 2026Practice
TypeScript2 min read
package.json exports + Types: Designing a Clean Public API
How to structure multi-entry TypeScript packages with package.json exports, prevent deep imports, and ship correct .d.ts for consumers.
#Modules#Tooling
Mar 01, 2026Practice
TypeScript4 min read
ESM vs CJS in TypeScript (Interop Without Tears)
Understand what TypeScript emits vs what Node runs, and how to avoid the common import/export traps in real codebases.
#JavaScript#Modules
Mar 01, 2026Practice
TypeScript2 min read
Type-Level Testing & API Design Patterns
How to validate TypeScript types, design safer APIs, and avoid unsafe assertions—interview-ready patterns.
#Interviews
Feb 08, 2026Practice