function resolveAbsolutePath(modulePath) {
    if (modulePath) {
        return path.join(ABSOLUTE_ROOT, modulePath);
    }
    return ABSOLUTE_ROOT;
}
Returns an absolute path to the given module path.
Module path should be relative, either path to a file or a directory.

This fn allows to calculate an absolute path for some global static values, such as
`__dirname` or `import.meta.url` that Turbopack will not embeds in compile time.
See ImportMetaBinding::code_generation for the usage.