TypeScript

TypeScript

Introduction

References

• Typescript style guide
• Sams Introduction to Typescript
• NodeJS packages
• https://www.typescriptlang.org/docs/handbook/utility-types.html
• https://www.typescriptlang.org/docs/handbook/2/objects.html
• https://www.tutorialsteacher.com/typescript/typescript-array
• https://www.typescripttutorial.net/typescript-tutorial/typescript-default-parameters/
• https://basarat.gitbook.io/typescript/type-system/exceptions
• https://thispointer.com/convert-array-to-string-without-comma-in-javascript/
• https://www.samanthaming.com/tidbits/83-4-ways-to-convert-string-to-character-array/
• https://www.tutorialspoint.com/typescript/typescript_operators.htm
• https://sjohnsonaz.github.io/cascade/0-Overview/0.5-Arrays-and-Hashes/
• https://www.typescriptlang.org/

Scratch pad

• npm i

• npm run start

• date

• Stun

  • https://stackoverflow.com/questions/17084865/how-to-query-a-stun-server-with-javascript-to-get-public-ip-and-port

• Screen output

  • console.log/console.warn/console.error - pretty prints json objects
    • Formatting console output
    • https://nodejs.org/dist/latest-v5.x/docs/api/console.html#console_console_log_data
  • process.stdout.write - write json structure in a single line
    • https://nodejs.org/dist/latest-v5.x/docs/api/process.html#process_process_stdout
    • Is Console.log() and process.stdout.write different?

• check is object is empty: Object.keys(my_object).length === 0

  • https://stackoverflow.com/questions/44337856/check-if-specific-object-is-empty-in-typescript/44338054

• dns.lookup

  • https://nodejs.org/api/dns.html#class-dnsresolver
  • https://nodejs.org/api/dns.html#dnspromiseslookuphostname-options
  • https://www.tabnine.com/code/javascript/functions/dns/lookup

• hash-map: https://stackoverflow.com/questions/42211175/typescript-hashmap-dictionary-interface

Promises

• https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Promise
• https://stackoverflow.com/questions/39032333/get-a-value-inside-a-promise-typescript
• https://basarat.gitbook.io/typescript/future-javascript/async-await#async-await-support-in-typescript
• https://stackoverflow.com/questions/39032333/get-a-value-inside-a-promise-typescript
• https://stackoverflow.com/questions/5010288/how-to-make-a-function-wait-until-a-callback-has-been-called-using-node-js
• https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Statements/async_function
• https://stackoverflow.com/questions/43881192/returning-a-promise-in-an-async-function-in-typescript
• https://blog.bitsrc.io/keep-your-promises-in-typescript-using-async-await-7bdc57041308
• https://stackoverflow.com/questions/39238167/how-to-return-a-proper-promise-with-typescript