Constrepresents your js-runtime's current working directory (acquired via defaultGetCwd).
represents the absWorkingDir option provided to your esbuild build config.
note that in almost all cases, if esbuild's absWorkingDir option was not specified,
then we fallback to the current working director (i.e. DIRECTORY.CWD).
this includes the node package scanner function validResolveDirFinder
(generated by findResolveDirOfNpmPackageFactory), inside of the npm-plugin (npmPluginSetup).
an enum that represents special directories.
currently, it is only being used in NpmPluginSetupConfig.nodeModulesDirs, and NpmAutoInstallCliConfig.dir.