Module jsonfile 

One parse per JSON file per process: installed.json and the global config.json are read by the scope analysis, the layout, the transaction, the installer and the autoloader in the same run. The parsed value is kept by path and validated on each read against the file’s (mtime ns, size) — a file rewritten mid-run (installed.json by the installer) is parsed again; a file removed comes back as absent.

Functions

read

The parsed JSON of path: None when the file is absent, unreadable or not JSON (the same answer every caller gave those cases).