getFileExtension()function
getFileExtension(file: Nullish<string>): string | undefined
| Param | Type | |
|---|---|---|
file | Nullish<string> | The filename to read the extension from, or a nullish value. required |
| Return | |
|---|---|
string | undefined | The extension (no leading dot), or undefined if the input has no extension. |
Get the file extension from a file path, e.g. "md", or return undefined if the input has no extension.
Examples
getFileExtension("readme.md") // "md"