RunKit + npm: @pounce-lang/core

var core = require("@pounce-lang/core") var interp = core.interpreter(core.parse("21 dup +"), {logLevel:1}); var pounceState = interp.next(); while (pounceState.value.active) { const stack = core.unParse(pounceState.value.stack); const prog = core.unParse(pounceState.value.prog); console.log(`${stack} | ${prog}`); pounceState = interp.next(); } console.log(pounceState.value.stack);