How can I get exact resolved version of dependency?

[jjangga0214]

Hi!
I need to get the exact version(not semver) of the dependency by programmatic way.
For example, if I want to know the version of foo, then I can run this code.
(readPkgUp is a function that walks up recursively to find package.json)

const packageName = 'foo'
const { packageJson: { version } } = await readPkgUp({  
  cwd: path.dirname(require.resolve(packageName)),
})

However, the above snippet works only with npm, pnpm, and yarn classic.
For yarn berry with PnP, it does not work.
So I tried this approach.

import * as lockfile from '@yarnpkg/lockfile'

const file = await fs.readFile('path/to/yarn.lock', { encoding: 'utf8' })
const result = lockfile.parse(file)

But it seems this also does not work with yarn berry.
I guess @yarnpkg/lockfile only works with yarn classic, though there's no documentation.

Therefore I parsed the yarn.lock file to json directly.

import yaml from 'yaml'

const file = await fs.readFile('path/to/yarn.lock', { encoding: 'utf8' })
const json = yaml.parse(file)

By this, I could parse the version.

However, I worry that lockfile's schema can be different by yarn version.
Or I can be changed in the future.

I am a library author, and I need a way to get the dependency version in a stable way.
No matter whether a user of my library use yarn classic, yarn 2, yarn 3, etc.

Is there such a way?

Thanks very much in advance.