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"build": "rm -rf dist && tsc --sourceMap -p ./"

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{
  "name": "Debug src/index.ts",
  "type": "node",
  "request": "launch",
  "env": {
    "TS_NODE_FILES": "true"
  },
  "runtimeArgs": ["-r", "ts-node/register"],
  "args": ["${workspaceFolder}/src/index.ts"]
}

PavelPolyakov

import * as fastify from "fastify";
import { Server, IncomingMessage, ServerResponse } from "http";

import statusRoutes from "../modules/routes/status";

describe("/status", () => {
  let server: fastify.FastifyInstance<Server, IncomingMessage, ServerResponse>;

  beforeAll(() => {});

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  "test": "NODE_ENV=test npx jest --verbose --runInBand"

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module.exports = {
  rootDir: "src",
  testMatch: ["**/__tests__/**/*.test.(ts|tsx|js|jsx)"],
  verbose: false,
  clearMocks: true,
  resetModules: true,
  coveragePathIgnorePatterns: [
    "/node_modules/",
    "/__fixtures__/",
    "/__tests__/",

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npm i jest ts-jest @types/jest

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// at the top
import vehiclesRoutes from "./modules/routes/vehicles";
import db from "./modules/db";

// after server was created
server.register(db, { uri: "mongodb://localhost:27017/vehicles" });
server.register(vehiclesRoutes);

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import * as fp from "fastify-plugin";

export default fp(async (server, opts, next) => {
  server.get("/vehicles/:id", {}, async (request, reply) => {
    try {
      const _id = request.params.id;

      const vehicle = await server.db.models.Vehicle.findOne({
        _id
      });

PavelPolyakov

import * as fastify from "fastify";
import * as http from "http";

import { Db } from "../modules/db";
declare module "fastify" {
  export interface FastifyInstance<
    HttpServer = http.Server,
    HttpRequest = http.IncomingMessage,
    HttpResponse = http.ServerResponse
  > {

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import { Model } from "mongoose";
import * as Mongoose from "mongoose";
import { VehicleModel, Vehicle } from "./models/vehicle";

import * as fp from "fastify-plugin";

export interface Models {
  Vehicle: Model<VehicleModel>;
}