requireFileExtension()function

requireFileExtension(file: string, caller: AnyCaller = requireFileExtension): string

Param	Type
`file`	`string`	The filename to read the extension from. required
`caller`	`AnyCaller`	Function to attribute a thrown error to (defaults to `requireFileExtension`). Defaults to `requireFileExtension`

Return
`string`	The extension (no leading dot).

Throws
`unknown`	`RequiredError` if the input has no extension.

Get the file extension from a file path e.g. "tsx", or throw RequiredError if the input has no extension.

Examples

requireFileExtension("component.tsx") // "tsx"