@lbu/code-gen

@lbu/code-gen

Collection of Lightbase backend utilities

Features

• Minimal project boilerplate
• Script runner, can watch & reload almost anything
• Flexible code generators supporting routers, validators, api clients, CRUD queries and more in the future.
• Opinionated structured logging
• Common Koa middleware wrapped in a single function
• Various utilities like loading .env files, executing other processes and a basic string templating system

Requirements

• Node.js >= 14
• Yarn 1.x.x

Why

Here at lightbase we had a constantly growing boilerplate for new projects. To facilitate our needs more and to stop copying and pasting things around this project was born. This project is for now tailored at monolithic projects.

Features breakdown

@lbu/cli:

• Run user scripts (in watch mode)
• Run the linter or tests
• A LBU based boilerplate

@lbu/lint-config:

• All necessary ESLint and Prettier dependencies
• Default configuration for ESLint and Prettier

@lbu/insight:

• A structured logger
  • Writing newline delimited JSON in production
  • Pretty printing for development
• Various utilities to get insight in the running process

@lbu/stdlib:

• Various lodash inspired utilities (isNil, isPlainObject, ...)
• Wrappers for child_process execution and spawning
• Basic templating system
• A mainFn wrapper that reads .env and calls the provided function if the file is the process entrypoint
• Replacements for CommonJS __dirname and __filename

@lbu/server:

• Wrapper around Koa instance creation
• 404 en error handling
• Handle CORS
• Send file helper
• Re-exports koa-session and koa-compose

@lbu/store:

• Wrapper around the Minio S3 client
• Wrapper around Postgres connection
• Utilities for providing temporary databases in a test environment
• Postgres migrations
• Postgres and S3 combined for file storage
• Caching files from S3 in memory or on local disk
• Postgres powered JobQueue implementation
  • Supports priority, scheduling, multiple async workers
• koa-session compatible SessionStore backed by Postgres

@lbu/code-gen:

• Code generators for the following:
  • router, with wildcard and path parameter support
  • validators, with pre- and postValidate hooks
  • queries, CRUD postgres queries
  • Axios based api client
  • Typescript or JSDoc types
• An extendable set of types:
  • boolean, number, string;
  • object, array, any;
  • date, uuid;
  • generic, anyOf, reference;
• Remote structure loader
• OpenAPI to LBU converter

Docs and development

See the website for the changelog, all available APIs and various guides.

For contributing see contributing.md.

New features

New features added should fall under the following categories:

• It improves the interface between api and client in some way. An example may be to support websockets in @lbu/code-gen
• It improves the developer experience one way or another while developing an api For example the lbu docker commands or various utilities provided by @lbu/stdlib

Although some parts heavily rely on conventions set by the packages, we currently aim not to be a framework. However, the idea of being a bit more of framework is not completely out of the door yet.