Yarn 2 PnP error - Cannot find type definition file for 'svelte'

Describe the bug If .svelte file has no <script></script>, Svelte for VSCode reports Cannot find type definition file for 'svelte' error from js extension - see screenshot for more.

To Reproduce

1. Clone https://github.com/ochmanski/sveltejs-language-tools-pnp-issue
2. Go to src/routes/about.svelte to see the issue
3. Go to src/routes/about-script-workaround.svelte to see how issue disappears when there's a script tag

Expected behaviour There should be no error. Sapper / Svelte compiles fine, run yarn dev to verify that.

Screenshots Issue:

Workaround:

System (please complete the following information):

• OS: macOS
• IDE: VSCode
• Plugin/Package: Svelte for VSCode
• Yarn version: 2.4.1
• VSCode version: 1.56.2