practal-system

Practal is a system for creating and working with precise abstractions on the basis of abstraction logic. It consists of a server and of clients connecting to it. This package contains the server, practal-server, and the command-line client, practal-cli, as two self-contained executables, together with the web client that the server serves. It needs Node.js 22.13 or later and nothing else.

npm install -g practal-system
practal-server                 # a server at http://127.0.0.1:7777/, with a local socket for the command line
practal-cli login              # the default user, which needs no password
practal-cli whoami
practal-cli --help
practal-server --help

Opening http://127.0.0.1:7777/ loads the web client, which connects either to this server or to a server running inside the browser itself, offline.

At present the server does one thing: it lets users log in. Every server has a default user, default, that logs in without a password; it is disabled with practal-server --no-default-user, and the server refuses to listen beyond the local machine while it is enabled.

See https://practal.com.