sklinov

sklinov

/* 
 Picked from https://blog.logrocket.com/interesting-use-cases-for-javascript-bitwise-operators/
**/

function rgbToHex ([red = 0, green = 0, blue = 0] = []) {
  return `#${(red << 16 | green << 8 | blue).toString(16)}`;
}

sklinov

/**
 * 
 * @param {any} item item you want to typecheck
 * @param {(keyof T)[]} keys keys that should be present in the type and not be undefined
 * @returns {boolean} Later in code item is of T type on success
 */

export const isType = <T extends unknown> (item: unknown, keys: (keyof T)[]):item is T  => {
  return item !== null && keys.every(key => (item as T)[key as keyof T] !== undefined)
}