Can JsonLogic solve Fizz Buzz?

Although JsonLogic, itself, doesn’t have/need a looping construct, the rule for one integer is:

{
	"if": [
		{"==": [ { "%": [ { "var": "i" }, 15 ] }, 0]},
		"fizzbuzz",
		{"==": [ { "%": [ { "var": "i" }, 3 ] }, 0]},
		"fizz",
		{"==": [ { "%": [ { "var": "i" }, 5 ] }, 0]},
		"buzz",
		{ "var": "i" }
	]
}

(14 operators, 190 non-whitespace characters)

Which you’d use like:

for(var i=1; i<=30 ; i++){
	console.log(jsonLogic.apply(fizbuzz_rule, {"i":i}));
}

An alternative implementation is to use the map operator within your json-logic:

{
  "map": [
    { "var": "list" },
    {
      "if": [
        { "==": [{ "%": [{ "var": "" }, 15] }, 0] },
        "fizzbuzz",

        { "==": [{ "%": [{ "var": "" }, 3] }, 0] },
        "fizz",

        { "==": [{ "%": [{ "var": "" }, 5] }, 0] },
        "buzz",

        { "var": "" }
      ]
    }
  ]
}

Which you’d use like:

const list = [1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26,27,28,29,30]; 
console.log(jsonLogic.apply(fizbuzz_rule, {"list": list}));