20 lines
725 B
TypeScript
20 lines
725 B
TypeScript
/**
|
||
* Checks if a value has the shape of a WHATWG URL object.
|
||
*
|
||
* Using a symbol or instanceof would not be able to recognize URL objects
|
||
* coming from other implementations (e.g. in Electron), so instead we are
|
||
* checking some well known properties for a lack of a better test.
|
||
*
|
||
* We use `href` and `protocol` as they are the only properties that are
|
||
* easy to retrieve and calculate due to the lazy nature of the getters.
|
||
*
|
||
* We check for auth attribute to distinguish legacy url instance with
|
||
* WHATWG URL instance.
|
||
*
|
||
* @param {unknown} fileUrlOrPath
|
||
* File path or URL.
|
||
* @returns {fileUrlOrPath is URL}
|
||
* Whether it’s a URL.
|
||
*/
|
||
export function isUrl(fileUrlOrPath: unknown): fileUrlOrPath is URL
|