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TINYHOUSE

TypeScript

ts config

ts config

How to watch and reload ts-node when TypeScript files change

{
  "scripts": {
    "start": "nodemon src/index.ts"
  }
}

This is it! nodemon and ts-node

tsc

By invoking tsc with no input files and a --project (or just -p) command line option that specifies the path of a directory containing a tsconfig.json file, or a path to a valid .json file containing the configurations.

tsc -p ./

eslint

typescript-eslint

curl

man page

GraphQL

  • intuitive: client specifies exactly what data it needs
  • performant: no useless data needs to be transferred
  • typed: every field in the schema is type-defined
  • self-documenting
  • single endpoint

Resolver

  • Arguments
    • obj - object returned from the parent resolver
    • args - arguments provides to the field
    • context - value provided to every resolver
    • info - info about the execution state of the query

Proxying API Requests in Development

Routing

Server-side routing

  • Pros

    • only request the webpage that the user is viewing
    • initial page will be faster
    • improved SEO

  • Cons

    • every URL change will result in a full-page refresh
    • data that doesn't change might be requested over and over again

Client-side routing

  • Pros

    • navigate between routes is extremely fast
    • no white screen flash when waiting for a page to load

  • Cons

    • the whole web app needs to be loaded on the first request
    • serch engine crawling is less optimized

TODO

  • Use passport.js as Google OAuth 2
    • another alternative method grant
  • Switch to TypeORM and TypeGraphQL

MongoDB

Indexes

Without indexes, MongoDB must perform a clollection scan(i.e. scan for every document in a collection) to select the documents that match a query statement.

When we define an index for a certain field, we tell the database to create a different data structure to store the values of that field for every document in the collection.

MongoDB indexes use a B-tree data structure.

  • default _id index

    • MongoDB automatically creates a unique index on the _id field during the creation of a collection.
    • The _id index is unique.
    • MongoDB also offers many other different index types such as geospatial, text, etc.

Cloud-Based Image Management Service

  • we don't have to store images directly in our database anymore
  • can make our app more responsive since we don't have to query large amounts of image data