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This is all configured through package.json and tsconfig.json. If Pulumi is using dist/index.js instead of ./index.ts, it must be configured that way. Generally, you don't need a ./dist folder or to run tsc ever: by default, Pulumi's TS configuration uses ts-node and transpiles invisibly.

how does this look for my tsconfig? aiming for aws usage only.

{
  "extends": "./tsconfig.build.json",
  "compilerOptions": {
    "rootDir": ".",
    "noEmit": true,
    "strict": true,
    "outDir": "dist",
    "target": "es2016",
    "module": "commonjs",
    "moduleResolution": "node",
    "sourceMap": true,
    "experimentalDecorators": true,
    "pretty": true,
    "noFallthroughCasesInSwitch": true,
    "noImplicitReturns": true,
    "forceConsistentCasingInFileNames": true
  },
  "ts-node": {
    "swc": true
  },
  "include": [
    "."
  ],
  "exclude": [
    "node_modules",
    "dist"
  ],
  "files": [
    "src/index.ts"
  ]
}

Looks fairly different to mine, but I can't see your tsconfig.build.json. I think you need compiler option

"declaaration": true

, and

noEmit

probably shouldn't be there (or should be

false

). It's probably a good idea to specify

"types": ["node"]

and whichever

lib

value you use.