tsgo on SvelteKit project reporting more issues than tsc

[KieranP]

Steps to reproduce

Have a SvelteKit application using Prisma ORM. Setup tsc and tsgo side-by-side.

tsc reports no issues, tsgo reports 4 errors.

It could be either because tsgo is picking up hidden .svelte-kit folder where tsc didn't previously?

Or some type of incompatibility with the way pnpm structures the node_modules folder?

Behavior with typescript@5.9

› pnpm tsc --noEmit

(no output, i.e no errors or warnings)

Behavior with tsgo

› pnpm tsgo --noEmit
.svelte-kit/types/src/routes/clients/[id]/edit/proxy+page.server.ts:16:14 - error TS2742: The inferred type of 'load' cannot be named without a reference to '.pnpm/@prisma+client@6.18.0_prisma@6.18.0_typescript@5.9.3__typescript@5.9.3/node_modules/.prisma/client'. This is likely not portable. A type annotation is necessary.

16 export const load = async ({ params, locals }: Parameters<PageServerLoad>[0]) => {
                ~~~~

.svelte-kit/types/src/routes/clients/[id]/proxy+page.server.ts:8:14 - error TS2742: The inferred type of 'load' cannot be named without a reference to '.pnpm/@prisma+client@6.18.0_prisma@6.18.0_typescript@5.9.3__typescript@5.9.3/node_modules/.prisma/client'. This is likely not portable. A type annotation is necessary.

8 export const load = async ({ params, locals }: Parameters<PageServerLoad>[0]) => {
               ~~~~

.svelte-kit/types/src/routes/clients/[id]/terms/proxy+page.server.ts:8:14 - error TS2742: The inferred type of 'load' cannot be named without a reference to '.pnpm/@prisma+client@6.18.0_prisma@6.18.0_typescript@5.9.3__typescript@5.9.3/node_modules/.prisma/client'. This is likely not portable. A type annotation is necessary.

8 export const load = async ({ params, locals }: Parameters<PageServerLoad>[0]) => {
               ~~~~

.svelte-kit/types/src/routes/proxy+page.server.ts:6:14 - error TS2742: The inferred type of 'load' cannot be named without a reference to '.pnpm/@prisma+client@6.18.0_prisma@6.18.0_typescript@5.9.3__typescript@5.9.3/node_modules/.prisma/client'. This is likely not portable. A type annotation is necessary.

6 export const load = async ({ locals }: Parameters<PageServerLoad>[0]) => {
               ~~~~


Found 4 errors in 4 files.

Errors  Files
     1  .svelte-kit/types/src/routes/clients/[id]/edit/proxy+page.server.ts:16
     1  .svelte-kit/types/src/routes/clients/[id]/proxy+page.server.ts:8
     1  .svelte-kit/types/src/routes/clients/[id]/terms/proxy+page.server.ts:8
     1  .svelte-kit/types/src/routes/proxy+page.server.ts:6

[DreierF]

That's likely a duplicate of #1034