You cannot select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
21 lines
774 B
TypeScript
21 lines
774 B
TypeScript
// `missingCaseError` is useful for compile-time checking that all `case`s in
|
|
// a `switch` statement have been handled, e.g.
|
|
//
|
|
// type AttachmentType = 'media' | 'documents';
|
|
//
|
|
// const type: AttachmentType = selectedTab;
|
|
// switch (type) {
|
|
// case 'media':
|
|
// return <MediaGridItem/>;
|
|
// case 'documents':
|
|
// return <DocumentListItem/>;
|
|
// default:
|
|
// return missingCaseError(type);
|
|
// }
|
|
//
|
|
// If we extended `AttachmentType` to `'media' | 'documents' | 'links'` the code
|
|
// above would trigger a compiler error stating that `'links'` has not been
|
|
// handled by our `switch` / `case` statement which is useful for code
|
|
// maintenance and system evolution.
|
|
export const missingCaseError = (x: never): TypeError => new TypeError(`Unhandled case: ${x}`);
|