Artifacts

An interactive Python prompt running on Pyodide with several runtime versions and command history.

Runs JavaScript inside a QuickJS WebAssembly sandbox with a synchronous fetch helper and example snippets.

Runs the Redis AR* array commands against an in-memory instance compiled to WebAssembly.

Counts source lines by language from pasted code, a GitHub repo or a ZIP and estimates effort with COCOMO.

Parses SQLite SELECT queries into an abstract syntax tree shown as JSON and Python.

Shows the VDBE bytecode SQLite generates for a query, using EXPLAIN.

Runs SQLite in WebAssembly and shows query results in about twenty formats including boxes, CSV, JSON and Markdown.

Runs a query in browser-based Python SQLite and annotates EXPLAIN and query plan output in plain English.

Formats, parses, validates and tokenizes SQLite SQL in the browser using a compiled parser.