FAIL src/components/Header.test.ts > Header component > Should render the component.
Svelte error: lifecycle_function_unavailable
`mount(...)` is not available on the server
❯ Module.lifecycle_function_unavailable node_modules/svelte/src/internal/server/errors.js:9:16
7| */
8| export function lifecycle_function_unavailable(name) {
9| const error = new Error(`lifecycle_function_unavailable\n\`${name}(...)\` is not available on the server`);
| ^
10|
11| error.name = 'Svelte error';
❯ Module.mount node_modules/svelte/src/index-server.js:30:24
❯ src/components/Header.test.ts:14:22