The browser playground
Don't want to install anything just to try a snippet? Open exemples/playground.html in any browser (no server needed) for a live code editor with a "Run" button and example snippets to load.
The playground runs ton618-lite.js, a JavaScript re-implementation of the language, entirely client-side — nothing is sent anywhere, and no installation is required. It mirrors the real interpreter closely: the full grammar (including switch/case), and the ton.random, ton.time, ton.json, ton.mathutils, and ton.strings built-in modules, since none of those need anything a browser can't already do.
Since beta-2.0.0 it supports the whole 2.0 language (classes, method syntax, arrow functions, f-strings, ranges, slices, destructuring, |>, ?....) and the new standard functions — CI runs the tests/ suite through both the real interpreter and ton618-lite.js and checks they print exactly the same thing. On the documentation website, the Run button on a code example opens it in the playground.
What it can't do, because a browser sandbox has no filesystem, sockets, or CLI arguments to back them with:
ton.sys,ton.os,ton.requests— real process/filesystem/network access; importing any of these gives a clear error explaining why, instead of silently behaving differently from the real interpreterton.encoding,ton.regex,ton.path— not reimplemented in JavaScript yet (they exist in the real interpreter)IMPORT://<file>for your own module files (no filesystem to read them from)get/post/serve(no HTTP server),readfile/writefile(no disk access)
One cosmetic difference: printing a float can show more decimal digits in the playground than in the real interpreter (JavaScript's and C++'s default number-to-string conversions round differently) — the value is identical either way, only its printed form differs.
For anything beyond quick experiments — and for the full standard library — install the real interpreter (see Installing & building above).