Then make sure that `d.ts` file is referenced in your `tsconfig.json`. If it reads something like `"include": ["src/**/*"]` and your `d.ts` file is inside `src`, it should work. You may need to reload for the changes to take effect.
Since Svelte version 4.2 / `svelte-check` version 3.5 / VS Code extension version 107.10.0 you can also declare the typings by augmenting the the `svelte/elements` module like this:
Since Svelte version 4.2 / `svelte-check` version 3.5 / VS Code extension version 107.10.0 you can also declare the typings by augmenting the `svelte/elements` module like this: