@matheus-releaserun

Vitest Reference: Config, Mocking, React Testing Library, Snapshots and MSW

17m ago · 2 min read · Vitest reference — Jest-compatible but faster, native ESM, no config for TypeScript. The migration from Jest is mostly changing one import // Jest: import { describe, it, expect, jest } from "@jest/globals"; const mock = jest.fn(); // Vitest: import...

AWS SDK v3 TypeScript Reference: S3, DynamoDB, SES, SQS, SSM and Lambda

17m ago · 2 min read · AWS SDK v3 TypeScript reference — the patterns you'll use in every AWS project. v2 → v3 migration: commands are classes now // v2 (legacy): const data = await s3.getObject({ Bucket: "b", Key: "k" }).promise(); // v3: import { S3Client, GetObjectComm...

Zod Reference: Schemas, safeParse, Transforms, React Hook Form and Advanced Patterns

32m ago · 2 min read · Zod reference — define once, get TypeScript types and runtime validation. The core pattern: z.infer eliminates duplicate type definitions const userSchema = z.object({ id: z.number().int().positive(), name: z.string().min(1).max(100).trim(), ...

Pydantic V2 Reference: BaseModel, Validators, Settings, Serialization and TypeAdapter

32m ago · 1 min read · Pydantic V2 reference — what changed from V1 and what matters in production. V1 → V2 migration: the four things that changed # V1: from pydantic import validator class Model(BaseModel): class Config: orm_mode = True @validator("email"...

Prisma Reference: Schema, CRUD, Relations, Raw Queries, Transactions and Error Handling

47m ago · 2 min read · Prisma reference — what trips people up coming from raw SQL or other ORMs. select vs include — can't use both at the same level // include: add related records to the response const user = await prisma.user.findUnique({ where: { id: 1 }, include:...