devCola

new Promise((resolve, reject) => reject(1))
    .catch((result) => {
        console.log(result);
        return new Promise((resolve, reject) => resolve(2))
    })
    .then((result) => console.log(result))
    
  // result: 1, 2

devCola

// temporary fix for any 3rd party lib. without TS definition 
declare module 'any-module' {
  const a: any | {
    default: any
  };
  export = a;
}

devCola

// yarn add ramda @types-ramda

import {
  curry,
} from 'ramda';

function test(a: string, b: number, c: boolean) {
  // ...
}
const curried1 = curry(test); 

devCola

Node Settings

Why NVM:

1. Permission 문제 해결:
   • System Node 로 설치되있으면:
     • npm install -g typescript 했을 때 permission 에러 (sudo 써야)
     • 해결 하려면 (sudo 안쓰려면): /usr/local/??? 등의 폴더들에게 permission 줘야
     • 사용자가 늘면 group permission 도 하고
     • ... 으아!

• NVM 으로 node 설치하면

devCola

function* generateRandomNumber() {
  let count = 1;
  // tslint:disable
  while (true) {
    count++;
    console.log(count);
    yield Math.random();
  }
}

devCola

{
  "extends": "tslint-microsoft-contrib",
  "rules": {
      "completed-docs": false,
      "trailing-comma": [
        true,
        {
          "multiline": "always",
          "singleline": {
            "functions": "ignore",

devCola

async function withErrorHandler(
  run: () => Promise<HTTPResponseType>, 
  options?: {
  },
) {
  try {
    return run();
  } catch (e) {
    // handle error here.

devCola

// NOT MINE - FROM SOMEONE @ INTERNET
// same as scala's stripMargin

export function stripMargin(template: TemplateStringsArray, ...expressions: any[]) {
  let result = template.reduce((accumulator, part, i) => {
    return accumulator + expressions[i - 1] + part
  })

  return result.replace(/\r?(\n)\s*\|/g, '$1');
}