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#validation (5)

Cheat sheets (5)

valibot — Modular and Tree-Shakable Schema Library

Package-level reference for valibot — schemas, transforms, pipes, branding, safeParse, and the tree-shaking advantage over zod.
npm package validation schema typescript

zod — TypeScript-first runtime validation

Package-level reference for zod on npm — install variants, v4 breaking changes (looseObject, mini build), companion packages, and alternatives.
npm package validation schema typescript

pydantic — Type-Driven Data Validation

Package-level reference for Pydantic on PyPI — install variants, v1 vs v2 split, optional extras, and alternatives.
pip package validation json

Zod — TypeScript-first schema validation with static type inference

TypeScript-first runtime validation library. Define schemas, validate inputs, infer static types — works at API boundaries, env config, forms, and tRPC.
javascript typescript zod validation schema

pydantic — Data Validation

Validate and parse data at runtime using Python type hints with Pydantic v2. Covers BaseModel, field validators, nested models, and JSON serialization.
python pydantic validation types models serialization