Regression: cannot build with tsup starting with version 2.1.0

[razor-x]

See error (collapsed) below. Confirmed in this PR https://github.com/seamapi/fake-seam-connect/pull/32

Details

> tsup

CLI Building entry: src/index.ts
CLI Using tsconfig: tsconfig.build.json
CLI tsup v7.1.0
CLI Using tsup config: /home/runner/work/fake-template/fake-template/tsup.config.ts
CLI Target: es2021
CLI Cleaning output folder
ESM Build start
CJS Build start
DTS Build start
DTS ⚡️ Build success in 4582ms
DTS dist/index.d.ts  3.64 KB
DTS dist/index.d.cts 3.64 KB

<--- Last few GCs --->

[2169:0x58d7d00]    40727 ms: Mark-sweep (reduce) 2028.5 (2083.1) -> 2026.4 (2081.5) MB, 2440.7 / 0.0 ms  (+ 2.6 ms in 3 steps since start of marking, biggest step 2.4 ms, walltime since start of marking 2451 ms) (average mu = 0.293, current mu = 0.167) a[2169:0x58d7d00]    43245 ms: Mark-sweep (reduce) 2026.8 (2081.7) -> 2026.8 (2082.0) MB, 2514.4 / 0.0 ms  (average mu = 0.153, current mu = 0.001) allocation failure; GC in old space requested


<--- JS stacktrace --->

FATAL ERROR: Reached heap limit Allocation failed - JavaScript heap out of memory
 1: 0xb7a940 node::Abort() [node]
 2: 0xa8e823  [node]
 3: 0xd5c990 v8::Utils::ReportOOMFailure(v8::internal::Isolate*, char const*, bool) [node]
 4: 0xd5cd37 v8::internal::V8::FatalProcessOutOfMemory(v8::internal::Isolate*, char const*, bool) [node]
 5: 0xf3a435  [node]
 6: 0xf4c91d v8::internal::Heap::CollectGarbage(v8::internal::AllocationSpace, v8::internal::GarbageCollectionReason, v8::GCCallbackFlags) [node]
 7: 0xf2701e v8::internal::HeapAllocator::AllocateRawWithLightRetrySlowPath(int, v8::internal::AllocationType, v8::internal::AllocationOrigin, v8::internal::AllocationAlignment) [node]
 8: 0xf283e7 v8::internal::HeapAllocator::AllocateRawWithRetryOrFailSlowPath(int, v8::internal::AllocationType, v8::internal::AllocationOrigin, v8::internal::AllocationAlignment) [node]
 9: 0xf095ba v8::internal::Factory::NewFillerObject(int, v8::internal::AllocationAlignment, v8::internal::AllocationType, v8::internal::AllocationOrigin) [node]
10: 0x12ce9bd v8::internal::Runtime_AllocateInOldGeneration(int, unsigned long*, v8::internal::Isolate*) [node]
11: 0x16fb6f9  [node]
Aborted (core dumped)
Error: Process completed with exit code 134.