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| /**
| * A utility type for choosing between synchronous and asynchronous return
| * values.
| *
| * This is used as the return value for plugins like {@link CustomFunction},
| * {@link Importer}, and {@link FileImporter} so that TypeScript enforces that
| * asynchronous plugins are only passed to {@link compileAsync} and {@link
| * compileStringAsync}, not {@link compile} or {@link compileString}.
| *
| * @typeParam sync - If this is `'sync'`, this can only be a `T`. If it's
| * `'async'`, this can be either a `T` or a `Promise<T>`.
| *
| * @category Other
| */
| export type PromiseOr<T, sync extends 'sync' | 'async'> = sync extends 'async'
| ? T | Promise<T>
| : T;
|
|
