Easy API

Installing

npm i @propero/easy-api

yarn add @propero/easy-api

pnpm add @propero/easy-api

Documentation

In progress... maybe... hopefully... within the next decade or so... no guarantees though

Examples

For further examples check out the example directory.

Simple Hello World Service

import express from "express";
import { Service, createService, Get, Param } from "@propero/easy-api";

@Service("/hello")
class HelloService {
  @Get("/:name?")
  public async hello(@Param("name") name: string = "world") {
    return `Hello ${name}!`;
  }
}

const app = express();
app.use("/api/v1", createService(new HelloService()));
app.listen(3000, () => console.log("http://localhost:3000/api/v1/hello"));

Simple Custom Injection Decorator

import express from "express";
import { createInjectorMiddleware, Post, Catch, CatchError } from "@propero/easy-api";
import { validateOrReject, ValidatorOptions, IsEmail } from "class-validator";
import { plainToClass } from "class-transformer";

const Validated = (Cls: unknown, validateOptions?: ValidatorOptions) => createInjectorMiddleware(() => async (req) => {
  const casted = plainToClass(Cls, req.body);
  await validateOrReject(casted, validateOptions);
  return casted;
});

class SubmitFormBody {
  @IsEmail()
  email: string;
}

@Service("/submit-form")
class SubmitFormService {
  @Post()
  public async onSubmit(@Validated(SubmitFormBody) body: SubmitFormBody) {
    console.log(body);
  }

  // Classes is set to array since class-validator does not throw an error but an array of errors
  @Catch({ status: 400, classes: Array })
  public async onError(@CatchError errors: ValidationError[]) {
    return { errors };
  }
}


const app = express();
app.use(createService(new SubmitFormService()));
app.listen(3000, () => console.log("http://localhost:3000/"));