Is there a way to block onSuccess until DTS is finished?

[chrisbenincasa]

Config:

export default defineConfig({
  entry: {
    index: 'src/index.ts',
    'constants/index': 'src/util/constants.ts',
    'util/index': 'src/util/index.ts',
    'types/index': 'src/types/index.ts',
  },
  dts: true,
  splitting: false,
  format: 'esm',
  outDir: 'build',
  sourcemap: true,
  async onSuccess() {
    console.log('ON SUCCESS');
  },
});

Sample output:

@tunarr/shared:build: CLI Building entry: {"index":"src/index.ts","constants/index":"src/util/constants.ts","util/index":"src/util/index.ts","types/index":"src/types/index.ts"}
@tunarr/shared:build: CLI Using tsconfig: tsconfig.json
@tunarr/shared:build: CLI tsup v8.0.2
@tunarr/shared:build: CLI Using tsup config: /home/christian/Code/tunarr/shared/tsup.config.ts
@tunarr/shared:build: CLI Target: es2022
@tunarr/shared:build: ESM Build start
@tunarr/shared:build: ESM build/index.js               19.68 KB
@tunarr/shared:build: ESM build/types/index.js         33.00 B
@tunarr/shared:build: ESM build/util/index.js          3.63 KB
@tunarr/shared:build: ESM build/constants/index.js     776.00 B
@tunarr/shared:build: ESM build/index.js.map           45.73 KB
@tunarr/shared:build: ESM build/types/index.js.map     71.00 B
@tunarr/shared:build: ESM build/util/index.js.map      7.67 KB
@tunarr/shared:build: ESM build/constants/index.js.map 1.30 KB
@tunarr/shared:build: ESM ⚡️ Build success in 30ms
@tunarr/shared:build: ON SUCCESS
@tunarr/shared:build: DTS Build start
@tunarr/shared:build: DTS ⚡️ Build success in 2432ms
@tunarr/shared:build: DTS build/index.d.ts           1.19 KB
@tunarr/shared:build: DTS build/constants/index.d.ts 611.00 B
@tunarr/shared:build: DTS build/util/index.d.ts      1.35 KB
@tunarr/shared:build: DTS build/types/index.d.ts     626.00 B

This is in the context of a monorepo. When a leaf node runs it's bundle, we'll kick off bundle on the shared libraries - however there is a race condition where if the DTS files are not finished by tsup in a shared library before they are needed for typechecking in a leaf node, we'll get an error. You can see in the output that the onSuccess handler is fired before the DTS even begins building

[chrisbenincasa]

Also, it seems that experimentalDts does not suffer from this issue.