resolve-value.js

// Used in real world eg. here: https://github.com/voxpelli/node-format-microformat/blob/5381268dbcdb1aef6a5757758710e4b9f75cbea3/index.js#L72-L78

// Works

/** @typedef {null|undefined|boolean|string|number|Array} NonObject */

/**
 * @template T
 * @typedef {T|Promise<T>} MaybePromised
 
/**
 * Resolves a value in a way so that it can be set either statically, dynamically or even asyncronously
 *
 * @template {NonObject} T
 * @template {any[]} P
 * @param {((...params: P) => MaybePromised<T>)|MaybePromised<T>} value
 * @param {P} valueArgs
 * @returns {Promise<T>}
 */
const resolveNonObjectValue = (value, ...valueArgs) => resolveValue(value, ...valueArgs);

// But preferably wouldn't want to limit myself to non-objects, but getting issues in Typescript thinking that `value` isn't always a callable when trying to do so

const resolveValue = async function (value, ...valueArgs) {
  if (typeof value === 'function') {
    value = value.apply(undefined, valueArgs);
  }

  return value;
};