monorepo-tsconfig-experiment

First, install dependencies:

$ npm run install-all

Then run app:

$ cd apps/app
$ npm start
> app@0.0.0 start
> ts-node src/app.ts

/monorepo-tsconfig-experiment/apps/app/node_modules/ts-node/src/index.ts:513
    return new TSError(diagnosticText, diagnosticCodes)
           ^
TSError: ⨯ Unable to compile TypeScript:
../../libs/lib/src/index.ts:4:3 - error TS2564: Property 'uninitializedProperty' has no initializer and is not definitely assigned in the constructor.

4   uninitializedProperty: string
    ~~~~~~~~~~~~~~~~~~~~~

    at createTSError (/monorepo-tsconfig-experiment/apps/app/node_modules/ts-node/src/index.ts:513:12)
    at reportTSError (/monorepo-tsconfig-experiment/apps/app/node_modules/ts-node/src/index.ts:517:19)
    at getOutput (/monorepo-tsconfig-experiment/apps/app/node_modules/ts-node/src/index.ts:752:36)
    at Object.compile (/monorepo-tsconfig-experiment/apps/app/node_modules/ts-node/src/index.ts:968:32)
    at Module.m._compile (/monorepo-tsconfig-experiment/apps/app/node_modules/ts-node/src/index.ts:1056:42)
    at Module._extensions..js (node:internal/modules/cjs/loader:1138:10)
    at Object.require.extensions.<computed> [as .ts] (/monorepo-tsconfig-experiment/apps/app/node_modules/ts-node/src/index.ts:1059:12)
    at Module.load (node:internal/modules/cjs/loader:989:32)
    at Function.Module._load (node:internal/modules/cjs/loader:829:14)
    at Module.require (node:internal/modules/cjs/loader:1013:19)

So app fails because a property has no initializer in lib, but if we go to lib and run its tests it works fine:

$ cd ../../libs/lib 
$ npm test
Ran all test suites.

This failure occurs because lib contains Typescript code that fails when strict is true, but is okay when strict is false. And app enables strict, and lib has it disabled.

But somehow app uses its own tsconfig file when running lib code, resulting in the above error. But I want lib code to run with the settings it specifies. How can I do that?