Cant run

Error on tests and same error on main:
```bash
yarn test
yarn run v1.22.17
$ node build/test/ts/index.js
node:internal/modules/cjs/loader:936
throw err;
^

Error: Cannot find module '/home/gavr/Projects/smallballoon-master/build/test/ts/index.js'
at Function.Module._resolveFilename (node:internal/modules/cjs/loader:933:15)
at Function.Module._load (node:internal/modules/cjs/loader:778:27)
at Function.executeUserEntryPoint [as runMain] (node:internal/modules/run_main:81:12)
at node:internal/main/run_main_module:17:47 {
code: 'MODULE_NOT_FOUND',
requireStack: []
}

Node.js v17.3.0
error Command failed with exit code 1.
info Visit https://yarnpkg.com/en/docs/cli/run for documentation about this command.
```

Linux: Arch
Node: v17.3.0

Start by running yarn test and inspect why the referenced entry point, build/test/ts/index.js, is missing on the main branch. Check the TypeScript build and test configuration that should produce this path. Done means yarn test runs successfully without the MODULE_NOT_FOUND error.

Written by the indexing model from the issue text.