sequelts
Nest
sequelts | Nest | |
---|---|---|
3 | 313 | |
28 | 64,633 | |
- | 1.6% | |
0.0 | 9.9 | |
over 1 year ago | 4 days ago | |
TypeScript | TypeScript | |
- | MIT License |
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For example, an activity of 9.0 indicates that a project is amongst the top 10% of the most actively developed projects that we are tracking.
sequelts
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Kysely: TypeScript SQL Query Builder
You can use these template literal types + infer to build an entire SQL parser. I did a POC that infers SQL query types by parsing the SQL query on a type level:
https://github.com/nikeee/sequelts
However, building this parser is pretty cumbersome and supporting multiple SQL dialects would be lots of pain. While I'm not a fan of query builders per se, Kysely pretty much covers everything that my POC tried to cover (except that 0 runtime overhead). However, you get the option to use different DBMs in tests than in production (pg in prod, sqlite in tests), which is a huge benefit for a lot of people. sequelts was designed to work with sqlite only. And it's not a hack.
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Flyweight: An ORM for SQLite
The only thing I can imagine where this would be useful is when you don't have control about what DB is being used, for example, when building a product that should be compatible with Postgres and MariaDB (and each is getting used). However, in the age of containerization, this isn't a big problem any more.
In some ORMs, I need to create types that the result of a query containing JOINs is mapped to. Others don't support them _at all_. In TypeORM, there is a query builder which forces you to put in _some_ SQL for things like "WHERE a in (b, c)".
I created a proof of concept of a different approach: Just embrace SQL and provide static typing based on the query. The return type of a query is whatever that thing is that the query returns in the context of the database schema. It's possible to do in TypeScript, by parsing the SQL query at development time:
https://github.com/nikeee/sequelts
One benefit is that it does not need any runtime code, as it's just a type layer over SQL. You don't have to rely on some type-metadata that TypeScript emits. That's why it also works with JavaScript only.
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Deepkit ā High-Performance TypeScript Framework
I don't like ORMs that use runtime types either. Most of the time, I want to write raw SQL.
So as an experiment, I created a library that statically types raw SQL:
https://github.com/nikeee/sequelts
The idea is to parse the SQL queries using TS's type system. The parsed query is combined with the database schema and therefore, we know what type the query will return.
This is especially useful due to TS's structural type system.
Nest
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NestJS tip: how to change HTTP server timeouts
When using the NestJS framework, sometimes you may need to change some default timeout. You can define them just like you'd do in a plain Node.js HTTP server like so:
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Containerize your multi-services app with docker compose
Back: a graphQL server built with Nestjs
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Full Stack Web Development Concept map
NestJS - opinionated more scalable, but harder to learn docs
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Don't go all-in Clean Architecture: An alternative for NestJS applications
Pragmatically, we can apply this to a Nest application by creating an Interface for our services, separating the Presenter layer (Controller) from the Use Case (Services):
- Utilizando Testcontainers para Testes de IntegraĆ§Ć£o com NestJS e Prisma ORM
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A Gentle Introduction to Containerization and Docker
Itās a text document that contains all the commands a user could call to assemble an image. Letās check an example of a Dockerfile for a nodejs app in this case it will be a NestJS app and then explain each part.
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Scalable REST APIs with NestJS: A Testing-Driven Approach
describe('Create bookmarks', () => { const dto: CreateBookmarkDto = { title: 'NestJS', link: 'https://nestjs.com/', }; it('should create bookmark', () => { return pactum .spec() .post('/bookmarks') .withHeaders({ Authorization: 'Bearer $S{userAt}', }) .withBody(dto) .expectStatus(201) .stores('bookmarkId', 'id')//store the bookmark id in the variable bookmarkId .expectBodyContains(dto.title) .expectBodyContains(dto.link) }); });
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Rust GraphQL APIs for NodeJS Developers: Introduction
In my usual NodeJS tech stack, which includes GraphQL, NestJS, SQL (predominantly PostgreSQL with MikroORM), I encountered these limitations. To overcome them, I've developed a new stack utilizing Rust, which still offers some ease of development:
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A Step-by-Step Guide to Implement JWT Authentication in NestJS usingĀ Passport
The purpose of this article is to provide a step-by-step guide for implementing authentication system in a NestJS project using the Passport middleware module.
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From Frontend to Backend
That's exactly where I am. My manager gave me these links, that cover a lot of those words the backend uses, so I can identify what they mean and how to use them. 1. For inspiration and concepts: https://github.com/Sairyss/domain-driven-hexagon 2. Suggested to read the documentation for nest.js. They apply such concepts I don't understand: https://nestjs.com/
What are some alternatives?
liveviewjs - LiveView-based library for reactive app development in NodeJS and Deno
SailsJS - Realtime MVC Framework for Node.js
flyweight - An ORM for SQLite
Koa - Expressive middleware for node.js using ES2017 async functions
kysely-codegen - Generate Kysely type definitions from your database.
loopback-next - LoopBack makes it easy to build modern API applications that require complex integrations.
ts-sql - A SQL database implemented purely in TypeScript type annotations.
feathers - The API and real-time application framework
assert-combinators - Functional assertion combinators.
Ts.ED - :triangular_ruler: Ts.ED is a Node.js and TypeScript framework on top of Express to write your application with TypeScript (or ES6). It provides a lot of decorators and guideline to make your code more readable and less error-prone. āļø Star to support our work!
postgresql-typed - Haskell PostgreSQL library with compile-time type inference
Moleculer - :rocket: Progressive microservices framework for Node.js