sequelts | pgtyped | |
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3 | 34 | |
28 | 2,822 | |
- | - | |
0.0 | 8.7 | |
over 1 year ago | 1 day ago | |
TypeScript | TypeScript | |
- | MIT License |
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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 – 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.
pgtyped
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Type-Safe Printf() in TypeScript
There is an implementation of SQL that operates on a table shaped type, entirely at type level. For your amusement: https://github.com/codemix/ts-sql
There are a bunch of more practical takes that codegen types from your database and generate types for your queries, eg: https://github.com/adelsz/pgtyped
To me the second approach seems much more pragmatic because you don’t need to run a SQL parser in a fairly potato interpreter on every build
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ORMs are nice but they are the wrong abstraction
ORMs suck, but raw SQL embedded in your code sucks too.
This might be good time to plug my TypeScript non-ORM: https://jawj.github.io/zapatos/.
I should say I also like what I've seen of https://kysely.dev/ and https://pgtyped.dev/.
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An effective way to build a heavy CRUD Rest API?
Thank you for suggestions they helped me finding what I was looking for. I will either pick kysely or https://pgtyped.dev/, but first I will do some tests. Thanks!
- PostgresJs: The Fastest full featured PostgreSQL client for Node.js and Deno
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compile-time SQL validations and type generation in TypeScript & Node
Cool. How does this compare to SafeQL, PgTyped, and Postgres language server ?
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Petrol: embedding a type-safe SQL API in OCaml using GADTs
I would instead rely on code generation like https://github.com/adelsz/pgtyped, because the embedded type-safe SQL will never fully cover all the features of vanilla SQL, for example Common Table Expression (CTE), window functions etc.
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Deno 1.33: Deno 2 is coming
There's pgtyped, which I believe does almost the same as sqlc
https://github.com/adelsz/pgtyped
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Kysely: TypeScript SQL Query Builder
For Postgres there is https://github.com/adelsz/pgtyped, sounds pretty much like what you describe?
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Is postgresql-typed a good starting library for a production application?
Avoiding the cost of learning EDSL that many Haskell DB libraries provide, I found out that only postgresql-typed and postgresql-simple allow to write only raw SQL queries easily. As I extensively use pgtyped for production Node.js application, I am thinking about using postgresql-typed. While I could find many resources for postgresql-simple, the same cannot be said try for postgresql-typed.
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This package is so underrated.
I would highly recommend trying out pgTyped if you want typesafe queries with postgres. It's fantastic!
What are some alternatives?
liveviewjs - LiveView-based library for reactive app development in NodeJS and Deno
slonik - A Node.js PostgreSQL client with runtime and build time type safety, and composable SQL.
flyweight - An ORM for SQLite
kysely - A type-safe typescript SQL query builder [Moved to: https://github.com/kysely-org/kysely]
kysely-codegen - Generate Kysely type definitions from your database.
TypeORM - ORM for TypeScript and JavaScript. Supports MySQL, PostgreSQL, MariaDB, SQLite, MS SQL Server, Oracle, SAP Hana, WebSQL databases. Works in NodeJS, Browser, Ionic, Cordova and Electron platforms.
ts-sql - A SQL database implemented purely in TypeScript type annotations.
Prisma - Next-generation ORM for Node.js & TypeScript | PostgreSQL, MySQL, MariaDB, SQL Server, SQLite, MongoDB and CockroachDB
assert-combinators - Functional assertion combinators.
typesafe-query-builder - Generate SQL queries leveraging type inference and Postgres Json functions
postgresql-typed - Haskell PostgreSQL library with compile-time type inference
kysely - A type-safe typescript SQL query builder