custom-app
Version:
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18 lines (15 loc) • 481 B
Flow
// @flow
/**
* Takes an argument and if it's an array, returns the first item in the array,
* otherwise returns the argument. Used for Preact compatibility.
*/
export const unwrapArray = (arg: *): * => (Array.isArray(arg) ? arg[0] : arg);
/**
* Takes a maybe-undefined function and arbitrary args and invokes the function
* only if it is defined.
*/
export const safeInvoke = (fn: ?Function, ...args: *) => {
if (typeof fn === "function") {
return fn(...args);
}
}