lukeggchapman

function memoize(_target: object, _key: string, descriptor: PropertyDescriptor) {
  const cache = {};
  const original = descriptor.value;

  descriptor.value = async function(...args: any[]) {
    const argsStr = JSON.stringify(args);

    cache[argsStr] = cache[argsStr] || original.apply(this, args);
    return cache[argsStr];
  };

lukeggchapman

find src -name "*.js" -exec sh -c 'mv "$0" "${0%.js}.ts"' {} \;

lukeggchapman

// Like array.map, but for objects
const mapObj = <U, T extends object>(
  obj: T,
  mapFn: (val: T[keyof T], key?: keyof T) => U
): { [K in keyof T]: U } => {
  return Object.assign(
    {},
    ...Object.entries(obj).map(([k, v]) => ({ [k]: mapFn(v, k as keyof T) }))
  );
};

lukeggchapman

// Like Promise.all, but for objects of {key: Promise}
const promsieAllObj = async <T>(obj: Record<string, Promise<T>>): Promise<Record<string, T>> => {
  const arr = Object.entries(obj).map(([key, value]) => value.then(res => [key, res]));
  return Object.assign(
    {},
    ...(await Promise.all(arr).then(res => res.map(([k, v]) => ({ [k as string]: v as T }))))
  );
};

lukeggchapman

{
  "React Component": {
    "prefix": "rcc",
    "body": [
      "import * as React from 'react'",
      "",
      "export interface ${1:IApp}Props {",
      "  ${2:}",
      "}",
      "",