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🔷 JavaScript with a safety net and a much better IDE experience

TypeScript adds a powerful static type system to JavaScript, catching errors at compile time and making large codebases dramatically easier to maintain and refactor. This category covers type primitives, generics, utility types, declaration files, strict mode, and the patterns that make TypeScript an upgrade rather than just added ceremony.

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Most referenced — TypeScript

TypeScript Interfaces vs Type Aliases 1 Template Literal Types 1 infer Keyword in Conditional Types 1 using & await using (TS 5.2 Explicit Resource Management) 1 satisfies Operator (TS 4.9) 1 const Type Parameters (TS 5.0) 1 TypeScript Function Overloads 1 Branded / Opaque Types in TypeScript 1

TypeScript Type System 1 TypeScript Enums vs Const Enums vs Union Types 1

TypeScript Enums vs Const Enums vs Union Types 74 TypeScript Utility Types 58 TypeScript Interfaces vs Type Aliases 57 Template Literal Types 38 const Type Parameters (TS 5.0) 32 Discriminated Unions 32 infer Keyword in Conditional Types 29 TypeScript Type System 29

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tsconfig.json 4.0

The TypeScript compiler configuration file — controlling which files are compiled, what JavaScript version is targeted, strictness settings, and module resolution.

2mo ago typescript intermediate

Diagram: TypeScript Generics

TypeScript Generics 2.0

Type parameters that allow functions, classes, and interfaces to work with any type while preserving type information — the TypeScript equivalent of PHP templates or Java generics.

2mo ago typescript advanced

Diagram: TypeScript Interfaces vs Type Aliases

TypeScript Interfaces vs Type Aliases 2.0

Both define object shapes, but interfaces are open (mergeable via declaration merging) while type aliases are closed — types are more flexible for unions and computed types.

2mo ago typescript intermediate

TypeScript Strict Mode 2.3

A tsconfig flag that enables the strictest type-checking options — strictNullChecks, noImplicitAny, and others — catching the most common TypeScript pitfalls.

2mo ago typescript intermediate

TypeScript Type System 2.0

TypeScript adds static types to JavaScript — catching type errors at compile time rather than runtime, while remaining a superset that compiles to plain JavaScript.

2mo ago typescript intermediate

Diagram: TypeScript Utility Types

TypeScript Utility Types 2.1

Built-in generic types that transform existing types — Partial, Required, Pick, Omit, Record, Readonly, ReturnType — eliminating the need to manually duplicate type definitions.

2mo ago typescript intermediate

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