Function getOrCall

packages/upgrade/src/common/src/upgrade_helper.ts:326–328

(property: T | Function, ...args: any[])

}

function getOrCall<T>(property: T | Function, ...args: any[]): T {
  return isFunction(property) ? property(...args) : property;
}

// NOTE: Only works for `typeof T !== 'object'`.
function isMap<T>(value: SingleOrListOrMap<T>): value is {[key: string]: T} {