20 lines
725 B
Plaintext
20 lines
725 B
Plaintext
|
/**
|
|||
|
|
* 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
|