@minsky-org/tsconfig

Four configs. base carries the strictness the org treats as non-negotiable, and the other three only add an environment.

| File | Use for | | -------------- | ------------------------------------------------------ | | base.json | anything, extended by the rest | | node.json | servers, workers, CLIs (types: ["node"], noEmit) | | react.json | browser apps (jsx: react-jsx, DOM libs, noEmit) | | library.json | publishable packages (declarations, src -> dist) |

{
  "extends": "@minsky-org/tsconfig/library.json",
  "include": ["src"],
  "exclude": ["src/**/*.test.ts"]
}

Two flags do most of the work and are the ones people try to turn off:

• exactOptionalPropertyTypes: { x: undefined } is not a valid x?: string. Build the object with a conditional spread, ...(cond ? { x } : {}).
• noUncheckedIndexedAccess: arr[0] and record[key] are T | undefined, because they are. Narrow at the access.