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`test-utils` is not exported in `package.json`

See original GitHub issue

Describe the bug

Jest 28 started supporting exports field in package.json. Imports from react-intersection-observer/test-utils are not working. Having:

import { mockAllIsIntersecting } from 'react-intersection-observer/test-utils';

Test is failing with:

Cannot find module 'react-intersection-observer/test-utils' from 'test.test.tsx'

To Reproduce

Put following in any test, which runs in Jest 28:

import { mockAllIsIntersecting } from 'react-intersection-observer/test-utils';

Or run the following in Terminal in any project that has react-intersection-observer installed:

node -e 'require("react-intersection-observer/test-utils")'

Node.js fails to find an export:

node:internal/modules/cjs/loader:488
      throw e;
      ^

Error [ERR_PACKAGE_PATH_NOT_EXPORTED]: Package subpath './test-utils' is not defined by "exports" in /Users/aleks/bynder/paramount/node_modules/react-intersection-observer/package.json
    at new NodeError (node:internal/errors:371:5)
    at throwExportsNotFound (node:internal/modules/esm/resolve:440:9)
    at packageExportsResolve (node:internal/modules/esm/resolve:692:3)
    at resolveExports (node:internal/modules/cjs/loader:482:36)
    at Function.Module._findPath (node:internal/modules/cjs/loader:522:31)
    at Function.Module._resolveFilename (node:internal/modules/cjs/loader:919:27)
    at Function.Module._load (node:internal/modules/cjs/loader:778:27)
    at Module.require (node:internal/modules/cjs/loader:1005:19)
    at require (node:internal/modules/cjs/helpers:102:18)
    at [eval]:1:1 {
  code: 'ERR_PACKAGE_PATH_NOT_EXPORTED'
}

Expected behavior

Node.js could import test-utils.

Additional context

I tried react-intersection-observer 9.1.0 and 9.3.0.

Node.js v16.13.0