Alosaur 🦖

Alosaur - Deno web framework 🦖.

test

  • Area - these are the modules of your application.
  • Controller - are responsible for controlling the flow of the application execution.
  • Middleware - provide a convenient mechanism for filtering HTTP requests entering your application.
  • Decorators - for query, cookie, parametrs, routes and etc.
  • Dependency Injection - for all controllers by default from microsoft/TSyringe (more about alosaur injection)

Documentation

Simple example:

Controller:

import { Controller, Get, Area, App } from 'https://deno.land/x/alosaur/src/mod.ts';

@Controller('/home')
export class HomeController {
    @Get('/text')
    text() {
        return 'Hello world';
    }
    @Get('/json')
    json() {
        return { text: 'test' };
    }
}

// Declare module
@Area({
    controllers: [HomeController],
})
export class HomeArea {}

// Create alosaur application
const app = new App({
    areas: [HomeArea],
});

app.listen();

tsconfig.app.json:

{
    "compilerOptions": {
        "experimentalDecorators": true,
        "emitDecoratorMetadata": true
    }
}

And run

deno run --allow-net --allow-read --config ./src/tsconfig.app.json app.ts

TODO

  • Add render views: dejs and handlebars

  • Add return value JSON

  • Add decorators:

    • @Area
    • @QueryParam
    • @Param param from url: /:id
    • @Body
    • @Cookie
    • @Req
    • @Res
    • @Middleware with regex route
    • @Cache Cache to actions {duration: number} number in ms

  • Add middleware

  • Add static middleware (example: app.useStatic)

  • Add CORS middleware

  • Add SPA middleware

  • Add DI

  • Add std exceptions

  • Add CI with minimal tests.

  • Add OpenAPI v3 generator (see /examples/basic/openapi.ts)

  • Add OpenAPI type reference

  • Add GraphQl

  • Add WebSocket

  • Add validators example class-validator

  • Add microservice connector with wasm

  • Add benchmarks

  • Transfer to Alosaur github organization

  • Add docs and more examples

Plugins & modules

Examples

  • Add basic example
  • Add di example
  • Add static serve example
  • Add dejs view render example
  • Add example with sql drivers (postgres)
  • Add basic example in Docker container
  • Add websockets example
  • Add example with wasm

OpenAPI v3

Example in examples/basic/openapi.ts

Generate openAPI file:

deno run -A --config ./src/tsconfig.lib.json examples/basic/openapi.ts

Middleware

You can create middleware and register it in area or all application layer.

@Middleware(new RegExp('/'))
export class Log implements MiddlewareTarget {
    date: Date = new Date();

    onPreRequest(request: ServerRequest, responce: ServerResponse) {
        return new Promise((resolve, reject) => {
            this.date = new Date();
            resolve();
        });
    }

    onPostRequest(request: ServerRequest, responce: ServerResponse) {
        return new Promise((resolve, reject) => {
            console.log(new Date().getTime() - this.date.getTime());
            resolve();
        });
    }
}

Register in app settings

const settings: AppSettings = {
    areas: [HomeArea, InfoArea],
    middlewares: [Log],
};

or in app

const app = new App(settings);

app.use(/\//, new Log());

Transformers and validators

You can use different transformers

For example class-validator and class-transformer for body

post.model.ts:

import validator from "https://dev.jspm.io/class-validator@0.8.5";

const { Length, Contains, IsInt, Min, Max, IsEmail, IsFQDN, IsDate } =
  validator;

export class PostModel {
  @Length(10, 20)
  title?: string;

  @Contains("hello")
  text?: string;

  @IsInt()
  @Min(0)
  @Max(10)
  rating?: number;

  @IsEmail()
  email?: string;
}

app.ts

import validator from "https://dev.jspm.io/class-validator@0.8.5";
import transformer from "https://dev.jspm.io/class-transformer@0.2.3";
import { App, Area, Controller, Post, Body } from 'https://deno.land/x/alosaur/src/mod.ts';
import { PostModel } from './post.model.ts';

const { validate } = validator;
const { plainToClass } = transformer;

// Create controller
@Controller()
export class HomeController {

    @Post('/')
    async post(@Body(PostModel) data: PostModel) {

        return {
            data,
            errors: await validate(data)
        }
    }
}

// Declare controller in area
@Area({
    controllers: [HomeController],
})
export class HomeArea { }

// Create app
const app = new App({
    areas: [HomeArea],
});

// added tranform function
app.useTransform({
    type: 'body', // parse body params
    getTransform: (transform: any, body: any) => {
        return plainToClass(transform, body);
    }
})

// serve application
app.listen();

You can also use just a function instead of a transformer.

function parser(body): ParsedObject {
    // your code
    return body;
}

...
@Post('/')
post(@Body(parser) data: ParsedObject) {

}