A web-based visualizer for ISO 8601 / ISO 8601-2 / IXDTF strings.

This module is a Plug.Router that can be mounted inside a Phoenix or Plug application, or run standalone during development via Tempo.Visualizer.Standalone.

What it does

Enter any ISO 8601, ISO 8601-2 (EDTF), or IXDTF string into the top input. The page renders a visual breakdown:

• The input echoed in large monospace.

• Each parsed component as its own box (year, month, day, hour, time zone, qualification, IXDTF suffix, …) with the canonical glyph above a short description.

• A details card showing every field of the parsed %Tempo{} / %Tempo.Interval{} / %Tempo.Duration{} / %Tempo.Set{} struct.

All state lives in the URL — share a link, share a parse.

Mounting in Phoenix / Plug

forward "/visualize", Tempo.Visualizer

Running standalone

Tempo.Visualizer.Standalone.start(port: 4001)
# Visit http://localhost:4001

Optional dependencies

The visualizer requires both :plug and :bandit. Both are declared optional: true in Tempo's mix.exs:

{:plug, "~> 1.15"},
{:bandit, "~> 1.5"}

The module is compiled only when both are available at build time. The core parser has no such dependency and will compile without either in place.