| import { formatServerError } from './format-server-error' | |
| describe('formatServerError', () => { | |
| it('should not append message several times', () => { | |
| const err = new Error( | |
| 'Class extends value undefined is not a constructor or null' | |
| ) | |
| // Before | |
| expect(err.message).toMatchInlineSnapshot( | |
| `"Class extends value undefined is not a constructor or null"` | |
| ) | |
| // After | |
| formatServerError(err) | |
| expect(err.message).toMatchInlineSnapshot(` | |
| "Class extends value undefined is not a constructor or null | |
| This might be caused by a React Class Component being rendered in a Server Component, React Class Components only works in Client Components. Read more: https://nextjs.org/docs/messages/class-component-in-server-component" | |
| `) | |
| // After second | |
| formatServerError(err) | |
| expect(err.message).toMatchInlineSnapshot(` | |
| "Class extends value undefined is not a constructor or null | |
| This might be caused by a React Class Component being rendered in a Server Component, React Class Components only works in Client Components. Read more: https://nextjs.org/docs/messages/class-component-in-server-component" | |
| `) | |
| }) | |
| }) | |