This document contains a list of features we want to add to the CLI. These will be filed as issues, once development is a bit further along.

• support jsonl (e.g. multiple JSON lines) for --input

• provide --output-format=simple,json,... to define the format of the result
• simple returns the (current) easy to read format: {foo: "bar", baz: [0, true]}
• json returns valid JSON output
• might add more if useful
• should default to json for maximum compatibility

• add --profile flag
• profile performance of TRL scripts
• execution time (total and per expression)
• memory allocations (https://docs.rs/dhat/0.1.1/dhat/)

• add --docs flag
• should open the TRL documentation in the browser
• add --examples flag
• should print a list of common input > program > result examples

• currently all TRL functions are implemented in Vector itself
• this means they aren't available in this CLI
• we should move those into a trl-contrib library
• this CLI (and Vector) will depend on that library
• this ensures feature parity between Vector and this CLI

• this one is only partially related to the CLI
• the goal is to compile TRL to wasm
• using that, provide a simple demo website that has two input fields
• one field takes a JSON payload
• the second a TRL program
• running the program shows the execution result on the page
• TRL runs locally in the browser, no web-server required