General Express Server API with TypeScript

<form action="/new" method="post">
 
  <input name="title" type="text">
  <input name="description" type="text">
  <button type="submit">Submit Form</button>
 
</form>

npm install heroku-ssl-redirect

db.students.update(
   { _id: 1 },
   { $push: { scores: 89 } }
)

var mongoose = require('mongoose');
var Schema = mongoose.Schema;

const exampleSchema = new Schema({
    title: { type: String , required: true},
    content: [{type: String}]
});


var Example = mongoose.model('Example', exampleSchema);
module.exports = Example;

$ git status 
$ git add .
$ git commit -m "update information"
$ git push heroku master
$ git heroku open

var express = require("express");
var app = express();
const session = require('express-session');
var MemcachedStore = require('connect-memjs')(session);

// configure sessions
var store = new MemcachedStore({servers: [process.env.MEMCACHEDCLOUD_SERVERS], username: process.env.MEMCACHEDCLOUD_USERNAME, password: process.env.MEMCACHEDCLOUD_PASSWORD});
app.use(session({ secret: 'keyboard cat',
   resave: true,
   saveUninitialized: true,
   cookie: { secure: true }, 
   store: store
}))

router.post('/:id/edit', auth.requireLogin, (req, res, next) => {
  Post.findByIdAndUpdate(req.params.id, req.body, function(err, post) {
    if(err) { console.error(err) };

     res.redirect(`/`+req.params.id);
  });
});

function processSQLFile(fileName) {

  // Extract SQL queries from files. Assumes no ';' in the fileNames
  var queries = fs.readFileSync(fileName).toString()
    .replace(/(\r\n|\n|\r)/gm," ") // remove newlines
    .replace(/\s+/g, ' ') // excess white space
    .split(";") // split into all statements
    .map(Function.prototype.call, String.prototype.trim)
    .filter(function(el) {return el.length != 0}); // remove any empty ones

  // Execute each SQL query sequentially
  queries.forEach(function(query) {
    batch.push(function(done) {
      if (query.indexOf("COPY") === 0) { // COPY - needs special treatment
        var regexp = /COPY\ (.*)\ FROM\ (.*)\ DELIMITERS/gmi;
        var matches = regexp.exec(query);
        var table = matches[1];
        var fileName = matches[2];
        var copyString = "COPY " + table + " FROM STDIN DELIMITERS ',' CSV HEADER";
        var stream = client.copyFrom(copyString);
        stream.on('close', function () {
          done();
        });
        var csvFile = __dirname + '/' + fileName;
        var str = fs.readFileSync(csvFile);
        stream.write(str);
        stream.end();
      } else { // Other queries don't need special treatment
        client.query(query, function(result) {
          done();
        });
      }
    });
  });
}

array.sort((x, y) => +new Date(x.createdAt) - +new Date(y.createdAt));

var mongoose = require('mongoose');
var Schema = mongoose.Schema;
var slug = require('mongoose-slug-generator');

mongoose.plugin(slug);

const pageSchema = new Schema({
    title: { type: String , required: true},
    slug: { type: String, slug: "title" }
});

var Page = mongoose.model('Page', pageSchema);
module.exports = Page;

type FooFilter<T> = { type: 'Foo', foo: T }
type BarFilter<T> = { type: 'Bar', bar: T }
type Filter = FooFilter<unknown> | BarFilter<unknown>
type FilterShapeBase = [string, Filter][]

type ValueOf<F extends Filter> = 
F extends FooFilter<infer T> ? T
: F extends BarFilter<infer T> ? T
: never

type FilterValues<FilterShape extends FilterShapeBase> = FilterShape extends Array<infer U>
    ? U extends [infer K, infer F] 
        ? K extends string
            ? F extends Filter
                ? { [Key in K]: ValueOf<F> }
                : never
            : never
        : never
    : never

function f<FilterShape extends FilterShapeBase>(filters: FilterShape): FilterValues<FilterShape> {
    const tuples = filters.map(([key, filter]) => filter.type === 'Foo' ? [key, filter.foo] : [key, filter.bar])
    return Object.fromEntries(tuples)
}

/*
HOW TO CONFIGURE THE FILTER FilterShape:

type FilterShape = [
  ['foo_in', StringSearchFilter],
  ['bar_equals', EnumSelectOneFilter<MyEnum>]
]

const filters = [
  ['foo_in', { ... }],
  ['bar_equals', { ... }],
]
*/

const getModels = asyncHandler(async (req, res) => {
  const { modelName } = req.query;
  const dealership = await Dealership.aggregate([
    { $match: { _id: req.user.dealership } },
    {
      $project: {
        models: {
          $filter: {
            input: "$models",
            as: "models",
            cond: {
              $regexMatch: {
                input: "$$models.modelName",
                regex: `^${modelName}`,
                options: "i",
              },
            },
          },
        },
      },
    },
  ]);
  const models = dealership[0].models;
  return res.status(200).json({
    success: true,
    quesData: models,
  });
});

  constructor() {
    this.hotelForm = new FormGroup({
      name: new FormControl('', [
        Validators.required,
        Validators.minLength(5),
        Validators.maxLength(30),
      ]),
      city: new FormControl('', [
        Validators.required,
        Validators.pattern(/^[a-zA-Z áÁÍíéőöüéűŐÉÖÜ]{5,30}$/),
      ]),
      category: new FormControl('', Validators.required),
    });
  }

  ngOnInit(): void {}

  saveHotel(): any {
    const submittedHotel = this.hotelForm.value;
    console.log(submittedHotel);

    return submittedHotel;
  }
}
<section class="table-holder">
  <button id="get-button" (click)="getPostList()">Get Blog List</button>
  <table>
    <thead>
      <tr>
        <th>Title</th>
        <th>Text</th>
        <th>Category</th>
        <th></th>
      </tr>
    </thead>
    <tbody>
      <tr class="table-row" *ngFor="let post of blogPosts; let i = index">
        <td>{{ post.title }}</td>
        <td>{{ post.text }}</td>
        <td>{{ post.category }}</td>
        <td>
          <button id="delete-button" (click)="deletePost(post.id)">Delete</button>
        </td>
      </tr>
    </tbody>
  </table>
</section>