/**
 * sx-ref.js — Generated from reference SX evaluator specification.
 *
 * Bootstrap-compiled from shared/sx/ref/{eval,render,primitives}.sx
 * Compare against hand-written sx.js for correctness verification.
 *
 * DO NOT EDIT — regenerate with: python bootstrap_js.py
 */
;(function(global) {
  "use strict";

  // =========================================================================
  // Types
  // =========================================================================

  var NIL = Object.freeze({ _nil: true, toString: function() { return "nil"; } });

  function isNil(x) { return x === NIL || x === null || x === undefined; }
  function isSxTruthy(x) { return x !== false && !isNil(x); }

  function Symbol(name) { this.name = name; }
  Symbol.prototype.toString = function() { return this.name; };
  Symbol.prototype._sym = true;

  function Keyword(name) { this.name = name; }
  Keyword.prototype.toString = function() { return ":" + this.name; };
  Keyword.prototype._kw = true;

  function Lambda(params, body, closure, name) {
    this.params = params;
    this.body = body;
    this.closure = closure || {};
    this.name = name || null;
  }
  Lambda.prototype._lambda = true;

  function Component(name, params, hasChildren, body, closure) {
    this.name = name;
    this.params = params;
    this.hasChildren = hasChildren;
    this.body = body;
    this.closure = closure || {};
  }
  Component.prototype._component = true;

  function Macro(params, restParam, body, closure, name) {
    this.params = params;
    this.restParam = restParam;
    this.body = body;
    this.closure = closure || {};
    this.name = name || null;
  }
  Macro.prototype._macro = true;

  function Thunk(expr, env) { this.expr = expr; this.env = env; }
  Thunk.prototype._thunk = true;

  function RawHTML(html) { this.html = html; }
  RawHTML.prototype._raw = true;

  function StyleValue(className, declarations, mediaRules, pseudoRules, keyframes) {
    this.className = className;
    this.declarations = declarations || "";
    this.mediaRules = mediaRules || [];
    this.pseudoRules = pseudoRules || [];
    this.keyframes = keyframes || [];
  }
  StyleValue.prototype._styleValue = true;

  function isSym(x) { return x != null && x._sym === true; }
  function isKw(x) { return x != null && x._kw === true; }

  function merge() {
    var out = {};
    for (var i = 0; i < arguments.length; i++) {
      var d = arguments[i];
      if (d) for (var k in d) out[k] = d[k];
    }
    return out;
  }

  function sxOr() {
    for (var i = 0; i < arguments.length; i++) {
      if (isSxTruthy(arguments[i])) return arguments[i];
    }
    return arguments.length ? arguments[arguments.length - 1] : false;
  }

  // =========================================================================
  // Platform interface — JS implementation
  // =========================================================================

  function typeOf(x) {
    if (isNil(x)) return "nil";
    if (typeof x === "number") return "number";
    if (typeof x === "string") return "string";
    if (typeof x === "boolean") return "boolean";
    if (x._sym) return "symbol";
    if (x._kw) return "keyword";
    if (x._thunk) return "thunk";
    if (x._lambda) return "lambda";
    if (x._component) return "component";
    if (x._macro) return "macro";
    if (x._raw) return "raw-html";
    if (x._styleValue) return "style-value";
    if (typeof Node !== "undefined" && x instanceof Node) return "dom-node";
    if (Array.isArray(x)) return "list";
    if (typeof x === "object") return "dict";
    return "unknown";
  }

  function symbolName(s) { return s.name; }
  function keywordName(k) { return k.name; }
  function makeSymbol(n) { return new Symbol(n); }
  function makeKeyword(n) { return new Keyword(n); }

  function makeLambda(params, body, env) { return new Lambda(params, body, merge(env)); }
  function makeComponent(name, params, hasChildren, body, env) {
    return new Component(name, params, hasChildren, body, merge(env));
  }
  function makeMacro(params, restParam, body, env, name) {
    return new Macro(params, restParam, body, merge(env), name);
  }
  function makeThunk(expr, env) { return new Thunk(expr, env); }

  function lambdaParams(f) { return f.params; }
  function lambdaBody(f) { return f.body; }
  function lambdaClosure(f) { return f.closure; }
  function lambdaName(f) { return f.name; }
  function setLambdaName(f, n) { f.name = n; }

  function componentParams(c) { return c.params; }
  function componentBody(c) { return c.body; }
  function componentClosure(c) { return c.closure; }
  function componentHasChildren(c) { return c.hasChildren; }
  function componentName(c) { return c.name; }

  function macroParams(m) { return m.params; }
  function macroRestParam(m) { return m.restParam; }
  function macroBody(m) { return m.body; }
  function macroClosure(m) { return m.closure; }

  function isThunk(x) { return x != null && x._thunk === true; }
  function thunkExpr(t) { return t.expr; }
  function thunkEnv(t) { return t.env; }

  function isCallable(x) { return typeof x === "function" || (x != null && x._lambda === true); }
  function isLambda(x) { return x != null && x._lambda === true; }
  function isComponent(x) { return x != null && x._component === true; }
  function isMacro(x) { return x != null && x._macro === true; }

  function isStyleValue(x) { return x != null && x._styleValue === true; }
  function styleValueClass(x) { return x.className; }
  function styleValue_p(x) { return x != null && x._styleValue === true; }

  function buildKeyframes(kfName, steps, env) {
    // Platform implementation of defkeyframes
    var parts = [];
    for (var i = 0; i < steps.length; i++) {
      var step = steps[i];
      var selector = isSym(step[0]) ? step[0].name : String(step[0]);
      var body = trampoline(evalExpr(step[1], env));
      var decls = isStyleValue(body) ? body.declarations : String(body);
      parts.push(selector + "{" + decls + "}");
    }
    var kfRule = "@keyframes " + kfName + "{" + parts.join("") + "}";
    var cn = "sx-ref-kf-" + kfName;
    var sv = new StyleValue(cn, "animation-name:" + kfName, [], [], [[kfName, kfRule]]);
    env[kfName] = sv;
    return sv;
  }

  function envHas(env, name) { return name in env; }
  function envGet(env, name) { return env[name]; }
  function envSet(env, name, val) { env[name] = val; }
  function envExtend(env) { return merge(env); }
  function envMerge(base, overlay) { return merge(base, overlay); }

  function dictSet(d, k, v) { d[k] = v; }
  function dictGet(d, k) { var v = d[k]; return v !== undefined ? v : NIL; }

  // Render-expression detection — lets the evaluator delegate to the active adapter.
  // Matches HTML tags, SVG tags, <>, raw!, ~components, html: prefix, custom elements.
  function isRenderExpr(expr) {
    if (!Array.isArray(expr) || !expr.length) return false;
    var h = expr[0];
    if (!h || !h._sym) return false;
    var n = h.name;
    return !!(n === "<>" || n === "raw!" ||
              n.charAt(0) === "~" || n.indexOf("html:") === 0 ||
              (typeof HTML_TAGS !== "undefined" && HTML_TAGS.indexOf(n) >= 0) ||
              (typeof SVG_TAGS !== "undefined" && SVG_TAGS.indexOf(n) >= 0) ||
              (n.indexOf("-") > 0 && expr.length > 1 && expr[1] && expr[1]._kw));
  }

  // Render dispatch — call the active adapter's render function.
  // Set by each adapter when loaded; defaults to identity (no rendering).
  var _renderExprFn = null;
  function renderExpr(expr, env) {
    if (_renderExprFn) return _renderExprFn(expr, env);
    // No adapter loaded — just return the expression as-is
    return expr;
  }

  function stripPrefix(s, prefix) {
    return s.indexOf(prefix) === 0 ? s.slice(prefix.length) : s;
  }

  function error(msg) { throw new Error(msg); }
  function inspect(x) { return JSON.stringify(x); }

  // =========================================================================
  // Primitives
  // =========================================================================

  var PRIMITIVES = {};

  // Arithmetic
  PRIMITIVES["+"] = function() { var s = 0; for (var i = 0; i < arguments.length; i++) s += arguments[i]; return s; };
  PRIMITIVES["-"] = function(a, b) { return arguments.length === 1 ? -a : a - b; };
  PRIMITIVES["*"] = function() { var s = 1; for (var i = 0; i < arguments.length; i++) s *= arguments[i]; return s; };
  PRIMITIVES["/"] = function(a, b) { return a / b; };
  PRIMITIVES["mod"] = function(a, b) { return a % b; };
  PRIMITIVES["inc"] = function(n) { return n + 1; };
  PRIMITIVES["dec"] = function(n) { return n - 1; };
  PRIMITIVES["abs"] = Math.abs;
  PRIMITIVES["floor"] = Math.floor;
  PRIMITIVES["ceil"] = Math.ceil;
  PRIMITIVES["round"] = Math.round;
  PRIMITIVES["min"] = Math.min;
  PRIMITIVES["max"] = Math.max;
  PRIMITIVES["sqrt"] = Math.sqrt;
  PRIMITIVES["pow"] = Math.pow;
  PRIMITIVES["clamp"] = function(x, lo, hi) { return Math.max(lo, Math.min(hi, x)); };

  // Comparison
  PRIMITIVES["="] = function(a, b) { return a == b; };
  PRIMITIVES["!="] = function(a, b) { return a != b; };
  PRIMITIVES["<"] = function(a, b) { return a < b; };
  PRIMITIVES[">"] = function(a, b) { return a > b; };
  PRIMITIVES["<="] = function(a, b) { return a <= b; };
  PRIMITIVES[">="] = function(a, b) { return a >= b; };

  // Logic
  PRIMITIVES["not"] = function(x) { return !isSxTruthy(x); };

  // String
  PRIMITIVES["str"] = function() {
    var p = [];
    for (var i = 0; i < arguments.length; i++) {
      var v = arguments[i]; if (isNil(v)) continue; p.push(String(v));
    }
    return p.join("");
  };
  PRIMITIVES["upper"] = function(s) { return String(s).toUpperCase(); };
  PRIMITIVES["lower"] = function(s) { return String(s).toLowerCase(); };
  PRIMITIVES["trim"] = function(s) { return String(s).trim(); };
  PRIMITIVES["split"] = function(s, sep) { return String(s).split(sep || " "); };
  PRIMITIVES["join"] = function(sep, coll) { return coll.join(sep); };
  PRIMITIVES["replace"] = function(s, old, nw) { return s.split(old).join(nw); };
  PRIMITIVES["starts-with?"] = function(s, p) { return String(s).indexOf(p) === 0; };
  PRIMITIVES["ends-with?"] = function(s, p) { var str = String(s); return str.indexOf(p, str.length - p.length) !== -1; };
  PRIMITIVES["slice"] = function(c, a, b) { return b !== undefined ? c.slice(a, b) : c.slice(a); };
  PRIMITIVES["concat"] = function() {
    var out = [];
    for (var i = 0; i < arguments.length; i++) if (arguments[i]) out = out.concat(arguments[i]);
    return out;
  };
  PRIMITIVES["strip-tags"] = function(s) { return String(s).replace(/<[^>]+>/g, ""); };

  // Predicates
  PRIMITIVES["nil?"] = isNil;
  PRIMITIVES["number?"] = function(x) { return typeof x === "number"; };
  PRIMITIVES["string?"] = function(x) { return typeof x === "string"; };
  PRIMITIVES["list?"] = Array.isArray;
  PRIMITIVES["dict?"] = function(x) { return x !== null && typeof x === "object" && !Array.isArray(x) && !x._sym && !x._kw; };
  PRIMITIVES["empty?"] = function(c) { return isNil(c) || (Array.isArray(c) ? c.length === 0 : typeof c === "string" ? c.length === 0 : Object.keys(c).length === 0); };
  PRIMITIVES["contains?"] = function(c, k) {
    if (typeof c === "string") return c.indexOf(String(k)) !== -1;
    if (Array.isArray(c)) return c.indexOf(k) !== -1;
    return k in c;
  };
  PRIMITIVES["odd?"] = function(n) { return n % 2 !== 0; };
  PRIMITIVES["even?"] = function(n) { return n % 2 === 0; };
  PRIMITIVES["zero?"] = function(n) { return n === 0; };

  // Collections
  PRIMITIVES["list"] = function() { return Array.prototype.slice.call(arguments); };
  PRIMITIVES["dict"] = function() {
    var d = {};
    for (var i = 0; i < arguments.length - 1; i += 2) d[arguments[i]] = arguments[i + 1];
    return d;
  };
  PRIMITIVES["range"] = function(a, b, step) {
    var r = []; step = step || 1;
    for (var i = a; step > 0 ? i < b : i > b; i += step) r.push(i);
    return r;
  };
  PRIMITIVES["get"] = function(c, k, def) { var v = (c && c[k]); return v !== undefined ? v : (def !== undefined ? def : NIL); };
  PRIMITIVES["len"] = function(c) { return Array.isArray(c) ? c.length : typeof c === "string" ? c.length : Object.keys(c).length; };
  PRIMITIVES["first"] = function(c) { return c && c.length > 0 ? c[0] : NIL; };
  PRIMITIVES["last"] = function(c) { return c && c.length > 0 ? c[c.length - 1] : NIL; };
  PRIMITIVES["rest"] = function(c) { return c ? c.slice(1) : []; };
  PRIMITIVES["nth"] = function(c, n) { return c && n >= 0 && n < c.length ? c[n] : NIL; };
  PRIMITIVES["cons"] = function(x, c) { return [x].concat(c || []); };
  PRIMITIVES["append"] = function(c, x) { return (c || []).concat([x]); };
  PRIMITIVES["keys"] = function(d) { return Object.keys(d || {}); };
  PRIMITIVES["vals"] = function(d) { var r = []; for (var k in d) r.push(d[k]); return r; };
  PRIMITIVES["merge"] = function() {
    var out = {};
    for (var i = 0; i < arguments.length; i++) { var d = arguments[i]; if (d && !isNil(d)) for (var k in d) out[k] = d[k]; }
    return out;
  };
  PRIMITIVES["assoc"] = function(d) {
    var out = {}; if (d && !isNil(d)) for (var k in d) out[k] = d[k];
    for (var i = 1; i < arguments.length - 1; i += 2) out[arguments[i]] = arguments[i + 1];
    return out;
  };
  PRIMITIVES["dissoc"] = function(d) {
    var out = {}; for (var k in d) out[k] = d[k];
    for (var i = 1; i < arguments.length; i++) delete out[arguments[i]];
    return out;
  };
  PRIMITIVES["chunk-every"] = function(c, n) {
    var r = []; for (var i = 0; i < c.length; i += n) r.push(c.slice(i, i + n)); return r;
  };
  PRIMITIVES["zip-pairs"] = function(c) {
    var r = []; for (var i = 0; i < c.length - 1; i++) r.push([c[i], c[i + 1]]); return r;
  };
  PRIMITIVES["into"] = function(target, coll) {
    if (Array.isArray(target)) return Array.isArray(coll) ? coll.slice() : Object.entries(coll);
    var r = {}; for (var i = 0; i < coll.length; i++) { var p = coll[i]; if (Array.isArray(p) && p.length >= 2) r[p[0]] = p[1]; }
    return r;
  };

  // Format
  PRIMITIVES["format-decimal"] = function(v, p) { return Number(v).toFixed(p || 2); };
  PRIMITIVES["parse-int"] = function(v, d) { var n = parseInt(v, 10); return isNaN(n) ? (d || 0) : n; };
  PRIMITIVES["pluralize"] = function(n, s, p) {
    if (s || (p && p !== "s")) return n == 1 ? (s || "") : (p || "s");
    return n == 1 ? "" : "s";
  };
  PRIMITIVES["escape"] = function(s) {
    return String(s).replace(/&/g,"&amp;").replace(/</g,"&lt;").replace(/>/g,"&gt;").replace(/"/g,"&quot;");
  };
  PRIMITIVES["format-date"] = function(s, fmt) {
    if (!s) return "";
    try {
      var d = new Date(s);
      if (isNaN(d.getTime())) return String(s);
      var months = ["January","February","March","April","May","June","July","August","September","October","November","December"];
      var short_months = ["Jan","Feb","Mar","Apr","May","Jun","Jul","Aug","Sep","Oct","Nov","Dec"];
      return fmt.replace(/%-d/g, d.getDate()).replace(/%d/g, ("0"+d.getDate()).slice(-2))
        .replace(/%B/g, months[d.getMonth()]).replace(/%b/g, short_months[d.getMonth()])
        .replace(/%Y/g, d.getFullYear()).replace(/%m/g, ("0"+(d.getMonth()+1)).slice(-2))
        .replace(/%H/g, ("0"+d.getHours()).slice(-2)).replace(/%M/g, ("0"+d.getMinutes()).slice(-2));
    } catch (e) { return String(s); }
  };
  PRIMITIVES["parse-datetime"] = function(s) { return s ? String(s) : NIL; };
  PRIMITIVES["split-ids"] = function(s) {
    if (!s) return [];
    return String(s).split(",").map(function(x) { return x.trim(); }).filter(function(x) { return x; });
  };
  PRIMITIVES["css"] = function() {
    // Stub — CSSX requires style dictionary which is browser-only
    var atoms = [];
    for (var i = 0; i < arguments.length; i++) {
      var a = arguments[i];
      if (isNil(a) || a === false) continue;
      atoms.push(isKw(a) ? a.name : String(a));
    }
    if (!atoms.length) return NIL;
    return new StyleValue("sx-" + atoms.join("-"), atoms.join(";"), [], [], []);
  };
  PRIMITIVES["merge-styles"] = function() {
    var valid = [];
    for (var i = 0; i < arguments.length; i++) {
      if (isStyleValue(arguments[i])) valid.push(arguments[i]);
    }
    if (!valid.length) return NIL;
    if (valid.length === 1) return valid[0];
    var allDecls = valid.map(function(v) { return v.declarations; }).join(";");
    return new StyleValue("sx-merged", allDecls, [], [], []);
  };

  function isPrimitive(name) { return name in PRIMITIVES; }
  function getPrimitive(name) { return PRIMITIVES[name]; }

  // Higher-order helpers used by the transpiled code
  function map(fn, coll) { return coll.map(fn); }
  function mapIndexed(fn, coll) { return coll.map(function(item, i) { return fn(i, item); }); }
  function filter(fn, coll) { return coll.filter(function(x) { return isSxTruthy(fn(x)); }); }
  function reduce(fn, init, coll) {
    var acc = init;
    for (var i = 0; i < coll.length; i++) acc = fn(acc, coll[i]);
    return acc;
  }
  function some(fn, coll) {
    for (var i = 0; i < coll.length; i++) { var r = fn(coll[i]); if (isSxTruthy(r)) return r; }
    return NIL;
  }
  function forEach(fn, coll) { for (var i = 0; i < coll.length; i++) fn(coll[i]); return NIL; }
  function isEvery(fn, coll) {
    for (var i = 0; i < coll.length; i++) { if (!isSxTruthy(fn(coll[i]))) return false; }
    return true;
  }
  function mapDict(fn, d) { var r = {}; for (var k in d) r[k] = fn(k, d[k]); return r; }

  // List primitives used directly by transpiled code
  var len = PRIMITIVES["len"];
  var first = PRIMITIVES["first"];
  var last = PRIMITIVES["last"];
  var rest = PRIMITIVES["rest"];
  var nth = PRIMITIVES["nth"];
  var cons = PRIMITIVES["cons"];
  var append = PRIMITIVES["append"];
  var isEmpty = PRIMITIVES["empty?"];
  var contains = PRIMITIVES["contains?"];
  var startsWith = PRIMITIVES["starts-with?"];
  var slice = PRIMITIVES["slice"];
  var concat = PRIMITIVES["concat"];
  var str = PRIMITIVES["str"];
  var join = PRIMITIVES["join"];
  var keys = PRIMITIVES["keys"];
  var get = PRIMITIVES["get"];
  var assoc = PRIMITIVES["assoc"];
  var range = PRIMITIVES["range"];
  function zip(a, b) { var r = []; for (var i = 0; i < Math.min(a.length, b.length); i++) r.push([a[i], b[i]]); return r; }
  function append_b(arr, x) { arr.push(x); return arr; }
  var apply = function(f, args) { return f.apply(null, args); };

  // Additional primitive aliases used by adapter/engine transpiled code
  var split = PRIMITIVES["split"];
  var trim = PRIMITIVES["trim"];
  var upper = PRIMITIVES["upper"];
  var lower = PRIMITIVES["lower"];
  var replace_ = function(s, old, nw) { return s.split(old).join(nw); };
  var endsWith = PRIMITIVES["ends-with?"];
  var parseInt_ = PRIMITIVES["parse-int"];
  var dict_fn = PRIMITIVES["dict"];

  // HTML rendering helpers
  function escapeHtml(s) {
    return String(s).replace(/&/g,"&amp;").replace(/</g,"&lt;").replace(/>/g,"&gt;").replace(/"/g,"&quot;");
  }
  function escapeAttr(s) { return escapeHtml(s); }
  function rawHtmlContent(r) { return r.html; }
  function makeRawHtml(s) { return { _raw: true, html: s }; }

  // Serializer
  function serialize(val) {
    if (isNil(val)) return "nil";
    if (typeof val === "boolean") return val ? "true" : "false";
    if (typeof val === "number") return String(val);
    if (typeof val === "string") return '"' + val.replace(/\\/g, "\\\\").replace(/"/g, '\\"') + '"';
    if (isSym(val)) return val.name;
    if (isKw(val)) return ":" + val.name;
    if (Array.isArray(val)) return "(" + val.map(serialize).join(" ") + ")";
    return String(val);
  }

  function isSpecialForm(n) { return n in {
    "if":1,"when":1,"cond":1,"case":1,"and":1,"or":1,"let":1,"let*":1,
    "lambda":1,"fn":1,"define":1,"defcomp":1,"defmacro":1,"defstyle":1,
    "defkeyframes":1,"defhandler":1,"begin":1,"do":1,
    "quote":1,"quasiquote":1,"->":1,"set!":1
  }; }
  function isHoForm(n) { return n in {
    "map":1,"map-indexed":1,"filter":1,"reduce":1,"some":1,"every?":1,"for-each":1
  }; }

  // processBindings and evalCond — exposed for DOM adapter render forms
  function processBindings(bindings, env) {
    var local = merge(env);
    for (var i = 0; i < bindings.length; i++) {
      var pair = bindings[i];
      if (Array.isArray(pair) && pair.length >= 2) {
        var name = isSym(pair[0]) ? pair[0].name : String(pair[0]);
        local[name] = trampoline(evalExpr(pair[1], local));
      }
    }
    return local;
  }
  function evalCond(clauses, env) {
    for (var i = 0; i < clauses.length; i += 2) {
      var test = clauses[i];
      if (isSym(test) && test.name === ":else") return clauses[i + 1];
      if (isKw(test) && test.name === "else") return clauses[i + 1];
      if (isSxTruthy(trampoline(evalExpr(test, env)))) return clauses[i + 1];
    }
    return null;
  }

  function isDefinitionForm(name) {
    return name === "define" || name === "defcomp" || name === "defmacro" ||
           name === "defstyle" || name === "defkeyframes" || name === "defhandler";
  }

  function indexOf_(s, ch) {
    return typeof s === "string" ? s.indexOf(ch) : -1;
  }

  function dictHas(d, k) { return d != null && k in d; }
  function dictDelete(d, k) { delete d[k]; }

  function forEachIndexed(fn, coll) {
    for (var i = 0; i < coll.length; i++) fn(i, coll[i]);
    return NIL;
  }

  // === Transpiled from eval ===

  // trampoline
  var trampoline = function(val) { return (function() {
  var result = val;
  return (isSxTruthy(isThunk(result)) ? trampoline(evalExpr(thunkExpr(result), thunkEnv(result))) : result);
})(); };

  // eval-expr
  var evalExpr = function(expr, env) { return (function() { var _m = typeOf(expr); if (_m == "number") return expr; if (_m == "string") return expr; if (_m == "boolean") return expr; if (_m == "nil") return NIL; if (_m == "symbol") return (function() {
  var name = symbolName(expr);
  return (isSxTruthy(envHas(env, name)) ? envGet(env, name) : (isSxTruthy(isPrimitive(name)) ? getPrimitive(name) : (isSxTruthy((name == "true")) ? true : (isSxTruthy((name == "false")) ? false : (isSxTruthy((name == "nil")) ? NIL : error((String("Undefined symbol: ") + String(name))))))));
})(); if (_m == "keyword") return keywordName(expr); if (_m == "dict") return mapDict(function(k, v) { return trampoline(evalExpr(v, env)); }, expr); if (_m == "list") return (isSxTruthy(isEmpty(expr)) ? [] : evalList(expr, env)); return expr; })(); };

  // eval-list
  var evalList = function(expr, env) { return (function() {
  var head = first(expr);
  var args = rest(expr);
  return (isSxTruthy(!sxOr((typeOf(head) == "symbol"), (typeOf(head) == "lambda"), (typeOf(head) == "list"))) ? map(function(x) { return trampoline(evalExpr(x, env)); }, expr) : (isSxTruthy((typeOf(head) == "symbol")) ? (function() {
  var name = symbolName(head);
  return (isSxTruthy((name == "if")) ? sfIf(args, env) : (isSxTruthy((name == "when")) ? sfWhen(args, env) : (isSxTruthy((name == "cond")) ? sfCond(args, env) : (isSxTruthy((name == "case")) ? sfCase(args, env) : (isSxTruthy((name == "and")) ? sfAnd(args, env) : (isSxTruthy((name == "or")) ? sfOr(args, env) : (isSxTruthy((name == "let")) ? sfLet(args, env) : (isSxTruthy((name == "let*")) ? sfLet(args, env) : (isSxTruthy((name == "lambda")) ? sfLambda(args, env) : (isSxTruthy((name == "fn")) ? sfLambda(args, env) : (isSxTruthy((name == "define")) ? sfDefine(args, env) : (isSxTruthy((name == "defcomp")) ? sfDefcomp(args, env) : (isSxTruthy((name == "defmacro")) ? sfDefmacro(args, env) : (isSxTruthy((name == "defstyle")) ? sfDefstyle(args, env) : (isSxTruthy((name == "defkeyframes")) ? sfDefkeyframes(args, env) : (isSxTruthy((name == "defhandler")) ? sfDefhandler(args, env) : (isSxTruthy((name == "defpage")) ? sfDefpage(args, env) : (isSxTruthy((name == "defquery")) ? sfDefquery(args, env) : (isSxTruthy((name == "defaction")) ? sfDefaction(args, env) : (isSxTruthy((name == "begin")) ? sfBegin(args, env) : (isSxTruthy((name == "do")) ? sfBegin(args, env) : (isSxTruthy((name == "quote")) ? sfQuote(args, env) : (isSxTruthy((name == "quasiquote")) ? sfQuasiquote(args, env) : (isSxTruthy((name == "->")) ? sfThreadFirst(args, env) : (isSxTruthy((name == "set!")) ? sfSetBang(args, env) : (isSxTruthy((name == "map")) ? hoMap(args, env) : (isSxTruthy((name == "map-indexed")) ? hoMapIndexed(args, env) : (isSxTruthy((name == "filter")) ? hoFilter(args, env) : (isSxTruthy((name == "reduce")) ? hoReduce(args, env) : (isSxTruthy((name == "some")) ? hoSome(args, env) : (isSxTruthy((name == "every?")) ? hoEvery(args, env) : (isSxTruthy((name == "for-each")) ? hoForEach(args, env) : (isSxTruthy((isSxTruthy(envHas(env, name)) && isMacro(envGet(env, name)))) ? (function() {
  var mac = envGet(env, name);
  return makeThunk(expandMacro(mac, args, env), env);
})() : (isSxTruthy(isRenderExpr(expr)) ? renderExpr(expr, env) : evalCall(head, args, env)))))))))))))))))))))))))))))))))));
})() : evalCall(head, args, env)));
})(); };

  // eval-call
  var evalCall = function(head, args, env) { return (function() {
  var f = trampoline(evalExpr(head, env));
  var evaluatedArgs = map(function(a) { return trampoline(evalExpr(a, env)); }, args);
  return (isSxTruthy((isSxTruthy(isCallable(f)) && isSxTruthy(!isLambda(f)) && !isComponent(f))) ? apply(f, evaluatedArgs) : (isSxTruthy(isLambda(f)) ? callLambda(f, evaluatedArgs, env) : (isSxTruthy(isComponent(f)) ? callComponent(f, args, env) : error((String("Not callable: ") + String(inspect(f)))))));
})(); };

  // call-lambda
  var callLambda = function(f, args, callerEnv) { return (function() {
  var params = lambdaParams(f);
  var local = envMerge(lambdaClosure(f), callerEnv);
  return (isSxTruthy((len(args) != len(params))) ? error((String(sxOr(lambdaName(f), "lambda")) + String(" expects ") + String(len(params)) + String(" args, got ") + String(len(args)))) : (forEach(function(pair) { return envSet(local, first(pair), nth(pair, 1)); }, zip(params, args)), makeThunk(lambdaBody(f), local)));
})(); };

  // call-component
  var callComponent = function(comp, rawArgs, env) { return (function() {
  var parsed = parseKeywordArgs(rawArgs, env);
  var kwargs = first(parsed);
  var children = nth(parsed, 1);
  var local = envMerge(componentClosure(comp), env);
  { var _c = componentParams(comp); for (var _i = 0; _i < _c.length; _i++) { var p = _c[_i]; local[p] = sxOr(dictGet(kwargs, p), NIL); } }
  if (isSxTruthy(componentHasChildren(comp))) {
  local["children"] = children;
}
  return makeThunk(componentBody(comp), local);
})(); };

  // parse-keyword-args
  var parseKeywordArgs = function(rawArgs, env) { return (function() {
  var kwargs = {};
  var children = [];
  var i = 0;
  reduce(function(state, arg) { return (function() {
  var idx = get(state, "i");
  var skip = get(state, "skip");
  return (isSxTruthy(skip) ? assoc(state, "skip", false, "i", (idx + 1)) : (isSxTruthy((isSxTruthy((typeOf(arg) == "keyword")) && ((idx + 1) < len(rawArgs)))) ? (dictSet(kwargs, keywordName(arg), trampoline(evalExpr(nth(rawArgs, (idx + 1)), env))), assoc(state, "skip", true, "i", (idx + 1))) : (append_b(children, trampoline(evalExpr(arg, env))), assoc(state, "i", (idx + 1)))));
})(); }, {["i"]: 0, ["skip"]: false}, rawArgs);
  return [kwargs, children];
})(); };

  // sf-if
  var sfIf = function(args, env) { return (function() {
  var condition = trampoline(evalExpr(first(args), env));
  return (isSxTruthy((isSxTruthy(condition) && !isNil(condition))) ? makeThunk(nth(args, 1), env) : (isSxTruthy((len(args) > 2)) ? makeThunk(nth(args, 2), env) : NIL));
})(); };

  // sf-when
  var sfWhen = function(args, env) { return (function() {
  var condition = trampoline(evalExpr(first(args), env));
  return (isSxTruthy((isSxTruthy(condition) && !isNil(condition))) ? (forEach(function(e) { return trampoline(evalExpr(e, env)); }, slice(args, 1, (len(args) - 1))), makeThunk(last(args), env)) : NIL);
})(); };

  // sf-cond
  var sfCond = function(args, env) { return (isSxTruthy((isSxTruthy((typeOf(first(args)) == "list")) && (len(first(args)) == 2))) ? sfCondScheme(args, env) : sfCondClojure(args, env)); };

  // sf-cond-scheme
  var sfCondScheme = function(clauses, env) { return (isSxTruthy(isEmpty(clauses)) ? NIL : (function() {
  var clause = first(clauses);
  var test = first(clause);
  var body = nth(clause, 1);
  return (isSxTruthy(sxOr((isSxTruthy((typeOf(test) == "symbol")) && sxOr((symbolName(test) == "else"), (symbolName(test) == ":else"))), (isSxTruthy((typeOf(test) == "keyword")) && (keywordName(test) == "else")))) ? makeThunk(body, env) : (isSxTruthy(trampoline(evalExpr(test, env))) ? makeThunk(body, env) : sfCondScheme(rest(clauses), env)));
})()); };

  // sf-cond-clojure
  var sfCondClojure = function(clauses, env) { return (isSxTruthy((len(clauses) < 2)) ? NIL : (function() {
  var test = first(clauses);
  var body = nth(clauses, 1);
  return (isSxTruthy(sxOr((isSxTruthy((typeOf(test) == "keyword")) && (keywordName(test) == "else")), (isSxTruthy((typeOf(test) == "symbol")) && sxOr((symbolName(test) == "else"), (symbolName(test) == ":else"))))) ? makeThunk(body, env) : (isSxTruthy(trampoline(evalExpr(test, env))) ? makeThunk(body, env) : sfCondClojure(slice(clauses, 2), env)));
})()); };

  // sf-case
  var sfCase = function(args, env) { return (function() {
  var matchVal = trampoline(evalExpr(first(args), env));
  var clauses = rest(args);
  return sfCaseLoop(matchVal, clauses, env);
})(); };

  // sf-case-loop
  var sfCaseLoop = function(matchVal, clauses, env) { return (isSxTruthy((len(clauses) < 2)) ? NIL : (function() {
  var test = first(clauses);
  var body = nth(clauses, 1);
  return (isSxTruthy(sxOr((isSxTruthy((typeOf(test) == "keyword")) && (keywordName(test) == "else")), (isSxTruthy((typeOf(test) == "symbol")) && sxOr((symbolName(test) == "else"), (symbolName(test) == ":else"))))) ? makeThunk(body, env) : (isSxTruthy((matchVal == trampoline(evalExpr(test, env)))) ? makeThunk(body, env) : sfCaseLoop(matchVal, slice(clauses, 2), env)));
})()); };

  // sf-and
  var sfAnd = function(args, env) { return (isSxTruthy(isEmpty(args)) ? true : (function() {
  var val = trampoline(evalExpr(first(args), env));
  return (isSxTruthy(!val) ? val : (isSxTruthy((len(args) == 1)) ? val : sfAnd(rest(args), env)));
})()); };

  // sf-or
  var sfOr = function(args, env) { return (isSxTruthy(isEmpty(args)) ? false : (function() {
  var val = trampoline(evalExpr(first(args), env));
  return (isSxTruthy(val) ? val : sfOr(rest(args), env));
})()); };

  // sf-let
  var sfLet = function(args, env) { return (function() {
  var bindings = first(args);
  var body = rest(args);
  var local = envExtend(env);
  (isSxTruthy((isSxTruthy((typeOf(first(bindings)) == "list")) && (len(first(bindings)) == 2))) ? forEach(function(binding) { return (function() {
  var vname = (isSxTruthy((typeOf(first(binding)) == "symbol")) ? symbolName(first(binding)) : first(binding));
  return envSet(local, vname, trampoline(evalExpr(nth(binding, 1), local)));
})(); }, bindings) : (function() {
  var i = 0;
  return reduce(function(acc, pairIdx) { return (function() {
  var vname = (isSxTruthy((typeOf(nth(bindings, (pairIdx * 2))) == "symbol")) ? symbolName(nth(bindings, (pairIdx * 2))) : nth(bindings, (pairIdx * 2)));
  var valExpr = nth(bindings, ((pairIdx * 2) + 1));
  return envSet(local, vname, trampoline(evalExpr(valExpr, local)));
})(); }, NIL, range(0, (len(bindings) / 2)));
})());
  { var _c = slice(body, 0, (len(body) - 1)); for (var _i = 0; _i < _c.length; _i++) { var e = _c[_i]; trampoline(evalExpr(e, local)); } }
  return makeThunk(last(body), local);
})(); };

  // sf-lambda
  var sfLambda = function(args, env) { return (function() {
  var paramsExpr = first(args);
  var body = nth(args, 1);
  var paramNames = map(function(p) { return (isSxTruthy((typeOf(p) == "symbol")) ? symbolName(p) : p); }, paramsExpr);
  return makeLambda(paramNames, body, env);
})(); };

  // sf-define
  var sfDefine = function(args, env) { return (function() {
  var nameSym = first(args);
  var value = trampoline(evalExpr(nth(args, 1), env));
  if (isSxTruthy((isSxTruthy(isLambda(value)) && isNil(lambdaName(value))))) {
  value.name = symbolName(nameSym);
}
  env[symbolName(nameSym)] = value;
  return value;
})(); };

  // sf-defcomp
  var sfDefcomp = function(args, env) { return (function() {
  var nameSym = first(args);
  var paramsRaw = nth(args, 1);
  var body = nth(args, 2);
  var compName = stripPrefix(symbolName(nameSym), "~");
  var parsed = parseCompParams(paramsRaw);
  var params = first(parsed);
  var hasChildren = nth(parsed, 1);
  return (function() {
  var comp = makeComponent(compName, params, hasChildren, body, env);
  env[symbolName(nameSym)] = comp;
  return comp;
})();
})(); };

  // parse-comp-params
  var parseCompParams = function(paramsExpr) { return (function() {
  var params = [];
  var hasChildren = false;
  var inKey = false;
  { var _c = paramsExpr; for (var _i = 0; _i < _c.length; _i++) { var p = _c[_i]; if (isSxTruthy((typeOf(p) == "symbol"))) {
  (function() {
  var name = symbolName(p);
  return (isSxTruthy((name == "&key")) ? (inKey = true) : (isSxTruthy((name == "&rest")) ? (hasChildren = true) : (isSxTruthy((name == "&children")) ? (hasChildren = true) : (isSxTruthy(hasChildren) ? NIL : (isSxTruthy(inKey) ? append_b(params, name) : append_b(params, name))))));
})();
} } }
  return [params, hasChildren];
})(); };

  // sf-defmacro
  var sfDefmacro = function(args, env) { return (function() {
  var nameSym = first(args);
  var paramsRaw = nth(args, 1);
  var body = nth(args, 2);
  var parsed = parseMacroParams(paramsRaw);
  var params = first(parsed);
  var restParam = nth(parsed, 1);
  return (function() {
  var mac = makeMacro(params, restParam, body, env, symbolName(nameSym));
  env[symbolName(nameSym)] = mac;
  return mac;
})();
})(); };

  // parse-macro-params
  var parseMacroParams = function(paramsExpr) { return (function() {
  var params = [];
  var restParam = NIL;
  reduce(function(state, p) { return (isSxTruthy((isSxTruthy((typeOf(p) == "symbol")) && (symbolName(p) == "&rest"))) ? assoc(state, "in-rest", true) : (isSxTruthy(get(state, "in-rest")) ? ((restParam = (isSxTruthy((typeOf(p) == "symbol")) ? symbolName(p) : p)), state) : (append_b(params, (isSxTruthy((typeOf(p) == "symbol")) ? symbolName(p) : p)), state))); }, {["in-rest"]: false}, paramsExpr);
  return [params, restParam];
})(); };

  // sf-defstyle
  var sfDefstyle = function(args, env) { return (function() {
  var nameSym = first(args);
  var value = trampoline(evalExpr(nth(args, 1), env));
  env[symbolName(nameSym)] = value;
  return value;
})(); };

  // sf-defkeyframes
  var sfDefkeyframes = function(args, env) { return (function() {
  var kfName = symbolName(first(args));
  var steps = rest(args);
  return buildKeyframes(kfName, steps, env);
})(); };

  // sf-begin
  var sfBegin = function(args, env) { return (isSxTruthy(isEmpty(args)) ? NIL : (forEach(function(e) { return trampoline(evalExpr(e, env)); }, slice(args, 0, (len(args) - 1))), makeThunk(last(args), env))); };

  // sf-quote
  var sfQuote = function(args, env) { return (isSxTruthy(isEmpty(args)) ? NIL : first(args)); };

  // sf-quasiquote
  var sfQuasiquote = function(args, env) { return qqExpand(first(args), env); };

  // qq-expand
  var qqExpand = function(template, env) { return (isSxTruthy(!(typeOf(template) == "list")) ? template : (isSxTruthy(isEmpty(template)) ? [] : (function() {
  var head = first(template);
  return (isSxTruthy((isSxTruthy((typeOf(head) == "symbol")) && (symbolName(head) == "unquote"))) ? trampoline(evalExpr(nth(template, 1), env)) : reduce(function(result, item) { return (isSxTruthy((isSxTruthy((typeOf(item) == "list")) && isSxTruthy((len(item) == 2)) && isSxTruthy((typeOf(first(item)) == "symbol")) && (symbolName(first(item)) == "splice-unquote"))) ? (function() {
  var spliced = trampoline(evalExpr(nth(item, 1), env));
  return (isSxTruthy((typeOf(spliced) == "list")) ? concat(result, spliced) : (isSxTruthy(isNil(spliced)) ? result : append(result, spliced)));
})() : append(result, qqExpand(item, env))); }, [], template));
})())); };

  // sf-thread-first
  var sfThreadFirst = function(args, env) { return (function() {
  var val = trampoline(evalExpr(first(args), env));
  return reduce(function(result, form) { return (isSxTruthy((typeOf(form) == "list")) ? (function() {
  var f = trampoline(evalExpr(first(form), env));
  var restArgs = map(function(a) { return trampoline(evalExpr(a, env)); }, rest(form));
  var allArgs = cons(result, restArgs);
  return (isSxTruthy((isSxTruthy(isCallable(f)) && !isLambda(f))) ? apply(f, allArgs) : (isSxTruthy(isLambda(f)) ? trampoline(callLambda(f, allArgs, env)) : error((String("-> form not callable: ") + String(inspect(f))))));
})() : (function() {
  var f = trampoline(evalExpr(form, env));
  return (isSxTruthy((isSxTruthy(isCallable(f)) && !isLambda(f))) ? f(result) : (isSxTruthy(isLambda(f)) ? trampoline(callLambda(f, [result], env)) : error((String("-> form not callable: ") + String(inspect(f))))));
})()); }, val, rest(args));
})(); };

  // sf-set!
  var sfSetBang = function(args, env) { return (function() {
  var name = symbolName(first(args));
  var value = trampoline(evalExpr(nth(args, 1), env));
  env[name] = value;
  return value;
})(); };

  // expand-macro
  var expandMacro = function(mac, rawArgs, env) { return (function() {
  var local = envMerge(macroClosure(mac), env);
  { var _c = mapIndexed(function(i, p) { return [p, i]; }, macroParams(mac)); for (var _i = 0; _i < _c.length; _i++) { var pair = _c[_i]; local[first(pair)] = (isSxTruthy((nth(pair, 1) < len(rawArgs))) ? nth(rawArgs, nth(pair, 1)) : NIL); } }
  if (isSxTruthy(macroRestParam(mac))) {
  local[macroRestParam(mac)] = slice(rawArgs, len(macroParams(mac)));
}
  return trampoline(evalExpr(macroBody(mac), local));
})(); };

  // call-fn
  var callFn = function(f, args, env) { return (isSxTruthy(isLambda(f)) ? trampoline(callLambda(f, args, env)) : (isSxTruthy(isCallable(f)) ? apply(f, args) : error((String("Not callable in HO form: ") + String(inspect(f)))))); };

  // ho-map
  var hoMap = function(args, env) { return (function() {
  var f = trampoline(evalExpr(first(args), env));
  var coll = trampoline(evalExpr(nth(args, 1), env));
  return map(function(item) { return callFn(f, [item], env); }, coll);
})(); };

  // ho-map-indexed
  var hoMapIndexed = function(args, env) { return (function() {
  var f = trampoline(evalExpr(first(args), env));
  var coll = trampoline(evalExpr(nth(args, 1), env));
  return mapIndexed(function(i, item) { return callFn(f, [i, item], env); }, coll);
})(); };

  // ho-filter
  var hoFilter = function(args, env) { return (function() {
  var f = trampoline(evalExpr(first(args), env));
  var coll = trampoline(evalExpr(nth(args, 1), env));
  return filter(function(item) { return callFn(f, [item], env); }, coll);
})(); };

  // ho-reduce
  var hoReduce = function(args, env) { return (function() {
  var f = trampoline(evalExpr(first(args), env));
  var init = trampoline(evalExpr(nth(args, 1), env));
  var coll = trampoline(evalExpr(nth(args, 2), env));
  return reduce(function(acc, item) { return callFn(f, [acc, item], env); }, init, coll);
})(); };

  // ho-some
  var hoSome = function(args, env) { return (function() {
  var f = trampoline(evalExpr(first(args), env));
  var coll = trampoline(evalExpr(nth(args, 1), env));
  return some(function(item) { return callFn(f, [item], env); }, coll);
})(); };

  // ho-every
  var hoEvery = function(args, env) { return (function() {
  var f = trampoline(evalExpr(first(args), env));
  var coll = trampoline(evalExpr(nth(args, 1), env));
  return isEvery(function(item) { return callFn(f, [item], env); }, coll);
})(); };

  // ho-for-each
  var hoForEach = function(args, env) { return (function() {
  var f = trampoline(evalExpr(first(args), env));
  var coll = trampoline(evalExpr(nth(args, 1), env));
  return forEach(function(item) { return callFn(f, [item], env); }, coll);
})(); };


  // === Transpiled from render (core) ===

  // HTML_TAGS
  var HTML_TAGS = ["html", "head", "body", "title", "meta", "link", "script", "style", "noscript", "header", "nav", "main", "section", "article", "aside", "footer", "h1", "h2", "h3", "h4", "h5", "h6", "hgroup", "div", "p", "blockquote", "pre", "figure", "figcaption", "address", "details", "summary", "a", "span", "em", "strong", "small", "b", "i", "u", "s", "mark", "sub", "sup", "abbr", "cite", "code", "time", "br", "wbr", "hr", "ul", "ol", "li", "dl", "dt", "dd", "table", "thead", "tbody", "tfoot", "tr", "th", "td", "caption", "colgroup", "col", "form", "input", "textarea", "select", "option", "optgroup", "button", "label", "fieldset", "legend", "output", "datalist", "img", "video", "audio", "source", "picture", "canvas", "iframe", "svg", "math", "path", "circle", "ellipse", "rect", "line", "polyline", "polygon", "text", "tspan", "g", "defs", "use", "clipPath", "mask", "pattern", "linearGradient", "radialGradient", "stop", "filter", "feGaussianBlur", "feOffset", "feBlend", "feColorMatrix", "feComposite", "feMerge", "feMergeNode", "feTurbulence", "feComponentTransfer", "feFuncR", "feFuncG", "feFuncB", "feFuncA", "feDisplacementMap", "feFlood", "feImage", "feMorphology", "feSpecularLighting", "feDiffuseLighting", "fePointLight", "feSpotLight", "feDistantLight", "animate", "animateTransform", "foreignObject", "template", "slot", "dialog", "menu"];

  // VOID_ELEMENTS
  var VOID_ELEMENTS = ["area", "base", "br", "col", "embed", "hr", "img", "input", "link", "meta", "param", "source", "track", "wbr"];

  // BOOLEAN_ATTRS
  var BOOLEAN_ATTRS = ["async", "autofocus", "autoplay", "checked", "controls", "default", "defer", "disabled", "formnovalidate", "hidden", "inert", "ismap", "loop", "multiple", "muted", "nomodule", "novalidate", "open", "playsinline", "readonly", "required", "reversed", "selected"];

  // definition-form?
  var isDefinitionForm = function(name) { return sxOr((name == "define"), (name == "defcomp"), (name == "defmacro"), (name == "defstyle"), (name == "defkeyframes"), (name == "defhandler")); };

  // parse-element-args
  var parseElementArgs = function(args, env) { return (function() {
  var attrs = {};
  var children = [];
  reduce(function(state, arg) { return (function() {
  var skip = get(state, "skip");
  return (isSxTruthy(skip) ? assoc(state, "skip", false, "i", (get(state, "i") + 1)) : (isSxTruthy((isSxTruthy((typeOf(arg) == "keyword")) && ((get(state, "i") + 1) < len(args)))) ? (function() {
  var val = trampoline(evalExpr(nth(args, (get(state, "i") + 1)), env));
  attrs[keywordName(arg)] = val;
  return assoc(state, "skip", true, "i", (get(state, "i") + 1));
})() : (append_b(children, arg), assoc(state, "i", (get(state, "i") + 1)))));
})(); }, {["i"]: 0, ["skip"]: false}, args);
  return [attrs, children];
})(); };

  // render-attrs
  var renderAttrs = function(attrs) { return join("", map(function(key) { return (function() {
  var val = dictGet(attrs, key);
  return (isSxTruthy((isSxTruthy(contains(BOOLEAN_ATTRS, key)) && val)) ? (String(" ") + String(key)) : (isSxTruthy((isSxTruthy(contains(BOOLEAN_ATTRS, key)) && !val)) ? "" : (isSxTruthy(isNil(val)) ? "" : (isSxTruthy((isSxTruthy((key == "style")) && isStyleValue(val))) ? (String(" class=\"") + String(styleValueClass(val)) + String("\"")) : (String(" ") + String(key) + String("=\"") + String(escapeAttr((String(val)))) + String("\""))))));
})(); }, keys(attrs))); };


  // === Transpiled from adapter-dom ===

  // SVG_NS
  var SVG_NS = "http://www.w3.org/2000/svg";

  // MATH_NS
  var MATH_NS = "http://www.w3.org/1998/Math/MathML";

  // render-to-dom
  var renderToDom = function(expr, env, ns) { return (function() { var _m = typeOf(expr); if (_m == "nil") return createFragment(); if (_m == "boolean") return createFragment(); if (_m == "raw-html") return domParseHtml(rawHtmlContent(expr)); if (_m == "string") return createTextNode(expr); if (_m == "number") return createTextNode((String(expr))); if (_m == "symbol") return renderToDom(trampoline(evalExpr(expr, env)), env, ns); if (_m == "keyword") return createTextNode(keywordName(expr)); if (_m == "dom-node") return expr; if (_m == "dict") return createFragment(); if (_m == "list") return (isSxTruthy(isEmpty(expr)) ? createFragment() : renderDomList(expr, env, ns)); if (_m == "style-value") return createTextNode(styleValueClass(expr)); return createTextNode((String(expr))); })(); };

  // render-dom-list
  var renderDomList = function(expr, env, ns) { return (function() {
  var head = first(expr);
  return (isSxTruthy((typeOf(head) == "symbol")) ? (function() {
  var name = symbolName(head);
  var args = rest(expr);
  return (isSxTruthy((name == "raw!")) ? renderDomRaw(args, env) : (isSxTruthy((name == "<>")) ? renderDomFragment(args, env, ns) : (isSxTruthy(startsWith(name, "html:")) ? renderDomElement(slice(name, 5), args, env, ns) : (isSxTruthy(isRenderDomForm(name)) ? (isSxTruthy((isSxTruthy(contains(HTML_TAGS, name)) && sxOr((isSxTruthy((len(args) > 0)) && (typeOf(first(args)) == "keyword")), ns))) ? renderDomElement(name, args, env, ns) : dispatchRenderForm(name, expr, env, ns)) : (isSxTruthy((isSxTruthy(envHas(env, name)) && isMacro(envGet(env, name)))) ? renderToDom(expandMacro(envGet(env, name), args, env), env, ns) : (isSxTruthy(contains(HTML_TAGS, name)) ? renderDomElement(name, args, env, ns) : (isSxTruthy(startsWith(name, "~")) ? (function() {
  var comp = envGet(env, name);
  return (isSxTruthy(isComponent(comp)) ? renderDomComponent(comp, args, env, ns) : renderDomUnknownComponent(name));
})() : (isSxTruthy((isSxTruthy((indexOf_(name, "-") > 0)) && isSxTruthy((len(args) > 0)) && (typeOf(first(args)) == "keyword"))) ? renderDomElement(name, args, env, ns) : (isSxTruthy(ns) ? renderDomElement(name, args, env, ns) : renderToDom(trampoline(evalExpr(expr, env)), env, ns))))))))));
})() : (isSxTruthy(sxOr(isLambda(head), (typeOf(head) == "list"))) ? renderToDom(trampoline(evalExpr(expr, env)), env, ns) : (function() {
  var frag = createFragment();
  { var _c = expr; for (var _i = 0; _i < _c.length; _i++) { var x = _c[_i]; domAppend(frag, renderToDom(x, env, ns)); } }
  return frag;
})()));
})(); };

  // render-dom-element
  var renderDomElement = function(tag, args, env, ns) { return (function() {
  var newNs = (isSxTruthy((tag == "svg")) ? SVG_NS : (isSxTruthy((tag == "math")) ? MATH_NS : ns));
  var el = domCreateElement(tag, newNs);
  var extraClass = NIL;
  reduce(function(state, arg) { return (function() {
  var skip = get(state, "skip");
  return (isSxTruthy(skip) ? assoc(state, "skip", false, "i", (get(state, "i") + 1)) : (isSxTruthy((isSxTruthy((typeOf(arg) == "keyword")) && ((get(state, "i") + 1) < len(args)))) ? (function() {
  var attrName = keywordName(arg);
  var attrVal = trampoline(evalExpr(nth(args, (get(state, "i") + 1)), env));
  (isSxTruthy(sxOr(isNil(attrVal), (attrVal == false))) ? NIL : (isSxTruthy((isSxTruthy((attrName == "style")) && isStyleValue(attrVal))) ? (extraClass = styleValueClass(attrVal)) : (isSxTruthy(contains(BOOLEAN_ATTRS, attrName)) ? (isSxTruthy(attrVal) ? domSetAttr(el, attrName, "") : NIL) : (isSxTruthy((attrVal == true)) ? domSetAttr(el, attrName, "") : domSetAttr(el, attrName, (String(attrVal)))))));
  return assoc(state, "skip", true, "i", (get(state, "i") + 1));
})() : ((isSxTruthy(!contains(VOID_ELEMENTS, tag)) ? domAppend(el, renderToDom(arg, env, newNs)) : NIL), assoc(state, "i", (get(state, "i") + 1)))));
})(); }, {["i"]: 0, ["skip"]: false}, args);
  if (isSxTruthy(extraClass)) {
  (function() {
  var existing = domGetAttr(el, "class");
  return domSetAttr(el, "class", (isSxTruthy(existing) ? (String(existing) + String(" ") + String(extraClass)) : extraClass));
})();
}
  return el;
})(); };

  // render-dom-component
  var renderDomComponent = function(comp, args, env, ns) { return (function() {
  var kwargs = {};
  var children = [];
  reduce(function(state, arg) { return (function() {
  var skip = get(state, "skip");
  return (isSxTruthy(skip) ? assoc(state, "skip", false, "i", (get(state, "i") + 1)) : (isSxTruthy((isSxTruthy((typeOf(arg) == "keyword")) && ((get(state, "i") + 1) < len(args)))) ? (function() {
  var val = trampoline(evalExpr(nth(args, (get(state, "i") + 1)), env));
  kwargs[keywordName(arg)] = val;
  return assoc(state, "skip", true, "i", (get(state, "i") + 1));
})() : (append_b(children, arg), assoc(state, "i", (get(state, "i") + 1)))));
})(); }, {["i"]: 0, ["skip"]: false}, args);
  return (function() {
  var local = envMerge(componentClosure(comp), env);
  { var _c = componentParams(comp); for (var _i = 0; _i < _c.length; _i++) { var p = _c[_i]; local[p] = (isSxTruthy(dictHas(kwargs, p)) ? dictGet(kwargs, p) : NIL); } }
  if (isSxTruthy(componentHasChildren(comp))) {
  (function() {
  var childFrag = createFragment();
  { var _c = children; for (var _i = 0; _i < _c.length; _i++) { var c = _c[_i]; domAppend(childFrag, renderToDom(c, env, ns)); } }
  return envSet(local, "children", childFrag);
})();
}
  return renderToDom(componentBody(comp), local, ns);
})();
})(); };

  // render-dom-fragment
  var renderDomFragment = function(args, env, ns) { return (function() {
  var frag = createFragment();
  { var _c = args; for (var _i = 0; _i < _c.length; _i++) { var x = _c[_i]; domAppend(frag, renderToDom(x, env, ns)); } }
  return frag;
})(); };

  // render-dom-raw
  var renderDomRaw = function(args, env) { return (function() {
  var frag = createFragment();
  { var _c = args; for (var _i = 0; _i < _c.length; _i++) { var arg = _c[_i]; (function() {
  var val = trampoline(evalExpr(arg, env));
  return (isSxTruthy((typeOf(val) == "string")) ? domAppend(frag, domParseHtml(val)) : (isSxTruthy((typeOf(val) == "dom-node")) ? domAppend(frag, domClone(val)) : (isSxTruthy(!isNil(val)) ? domAppend(frag, createTextNode((String(val)))) : NIL)));
})(); } }
  return frag;
})(); };

  // render-dom-unknown-component
  var renderDomUnknownComponent = function(name) { return (function() {
  var el = domCreateElement("div", NIL);
  domSetAttr(el, "style", "background:#fef2f2;border:1px solid #fca5a5;color:#991b1b;padding:4px 8px;margin:2px;border-radius:4px;font-size:12px;font-family:monospace");
  domAppend(el, createTextNode((String("Unknown component: ") + String(name))));
  return el;
})(); };

  // RENDER_DOM_FORMS
  var RENDER_DOM_FORMS = ["if", "when", "cond", "case", "let", "let*", "begin", "do", "define", "defcomp", "defmacro", "defstyle", "defkeyframes", "defhandler", "map", "map-indexed", "filter", "for-each"];

  // render-dom-form?
  var isRenderDomForm = function(name) { return contains(RENDER_DOM_FORMS, name); };

  // dispatch-render-form
  var dispatchRenderForm = function(name, expr, env, ns) { return (isSxTruthy((name == "if")) ? (function() {
  var condVal = trampoline(evalExpr(nth(expr, 1), env));
  return (isSxTruthy(condVal) ? renderToDom(nth(expr, 2), env, ns) : (isSxTruthy((len(expr) > 3)) ? renderToDom(nth(expr, 3), env, ns) : createFragment()));
})() : (isSxTruthy((name == "when")) ? (isSxTruthy(!trampoline(evalExpr(nth(expr, 1), env))) ? createFragment() : (function() {
  var frag = createFragment();
  { var _c = range(2, len(expr)); for (var _i = 0; _i < _c.length; _i++) { var i = _c[_i]; domAppend(frag, renderToDom(nth(expr, i), env, ns)); } }
  return frag;
})()) : (isSxTruthy((name == "cond")) ? (function() {
  var branch = evalCond(rest(expr), env);
  return (isSxTruthy(branch) ? renderToDom(branch, env, ns) : createFragment());
})() : (isSxTruthy((name == "case")) ? renderToDom(trampoline(evalExpr(expr, env)), env, ns) : (isSxTruthy(sxOr((name == "let"), (name == "let*"))) ? (function() {
  var local = processBindings(nth(expr, 1), env);
  var frag = createFragment();
  { var _c = range(2, len(expr)); for (var _i = 0; _i < _c.length; _i++) { var i = _c[_i]; domAppend(frag, renderToDom(nth(expr, i), local, ns)); } }
  return frag;
})() : (isSxTruthy(sxOr((name == "begin"), (name == "do"))) ? (function() {
  var frag = createFragment();
  { var _c = range(1, len(expr)); for (var _i = 0; _i < _c.length; _i++) { var i = _c[_i]; domAppend(frag, renderToDom(nth(expr, i), env, ns)); } }
  return frag;
})() : (isSxTruthy(isDefinitionForm(name)) ? (trampoline(evalExpr(expr, env)), createFragment()) : (isSxTruthy((name == "map")) ? (function() {
  var f = trampoline(evalExpr(nth(expr, 1), env));
  var coll = trampoline(evalExpr(nth(expr, 2), env));
  var frag = createFragment();
  { var _c = coll; for (var _i = 0; _i < _c.length; _i++) { var item = _c[_i]; (function() {
  var val = (isSxTruthy(isLambda(f)) ? renderLambdaDom(f, [item], env, ns) : renderToDom(apply(f, [item]), env, ns));
  return domAppend(frag, val);
})(); } }
  return frag;
})() : (isSxTruthy((name == "map-indexed")) ? (function() {
  var f = trampoline(evalExpr(nth(expr, 1), env));
  var coll = trampoline(evalExpr(nth(expr, 2), env));
  var frag = createFragment();
  forEachIndexed(function(i, item) { return (function() {
  var val = (isSxTruthy(isLambda(f)) ? renderLambdaDom(f, [i, item], env, ns) : renderToDom(apply(f, [i, item]), env, ns));
  return domAppend(frag, val);
})(); }, coll);
  return frag;
})() : (isSxTruthy((name == "filter")) ? renderToDom(trampoline(evalExpr(expr, env)), env, ns) : (isSxTruthy((name == "for-each")) ? (function() {
  var f = trampoline(evalExpr(nth(expr, 1), env));
  var coll = trampoline(evalExpr(nth(expr, 2), env));
  var frag = createFragment();
  { var _c = coll; for (var _i = 0; _i < _c.length; _i++) { var item = _c[_i]; (function() {
  var val = (isSxTruthy(isLambda(f)) ? renderLambdaDom(f, [item], env, ns) : renderToDom(apply(f, [item]), env, ns));
  return domAppend(frag, val);
})(); } }
  return frag;
})() : renderToDom(trampoline(evalExpr(expr, env)), env, ns)))))))))))); };

  // render-lambda-dom
  var renderLambdaDom = function(f, args, env, ns) { return (function() {
  var local = envMerge(lambdaClosure(f), env);
  forEachIndexed(function(i, p) { return envSet(local, p, nth(args, i)); }, lambdaParams(f));
  return renderToDom(lambdaBody(f), local, ns);
})(); };


  // =========================================================================
  // Platform interface — DOM adapter (browser-only)
  // =========================================================================

  var _hasDom = typeof document !== "undefined";

  // Register DOM adapter as the render dispatch target for the evaluator.
  _renderExprFn = function(expr, env) { return renderToDom(expr, env, null); };

  var SVG_NS = "http://www.w3.org/2000/svg";
  var MATH_NS = "http://www.w3.org/1998/Math/MathML";

  function domCreateElement(tag, ns) {
    if (!_hasDom) return null;
    if (ns) return document.createElementNS(ns, tag);
    return document.createElement(tag);
  }

  function createTextNode(s) {
    return _hasDom ? document.createTextNode(s) : null;
  }

  function createFragment() {
    return _hasDom ? document.createDocumentFragment() : null;
  }

  function domAppend(parent, child) {
    if (parent && child) parent.appendChild(child);
  }

  function domPrepend(parent, child) {
    if (parent && child) parent.insertBefore(child, parent.firstChild);
  }

  function domSetAttr(el, name, val) {
    if (el && el.setAttribute) el.setAttribute(name, val);
  }

  function domGetAttr(el, name) {
    if (!el || !el.getAttribute) return NIL;
    var v = el.getAttribute(name);
    return v === null ? NIL : v;
  }

  function domRemoveAttr(el, name) {
    if (el && el.removeAttribute) el.removeAttribute(name);
  }

  function domHasAttr(el, name) {
    return !!(el && el.hasAttribute && el.hasAttribute(name));
  }

  function domParseHtml(html) {
    if (!_hasDom) return null;
    var tpl = document.createElement("template");
    tpl.innerHTML = html;
    return tpl.content;
  }

  function domClone(node) {
    return node && node.cloneNode ? node.cloneNode(true) : node;
  }

  function domParent(el) { return el ? el.parentNode : null; }
  function domId(el) { return el && el.id ? el.id : NIL; }
  function domNodeType(el) { return el ? el.nodeType : 0; }
  function domNodeName(el) { return el ? el.nodeName : ""; }
  function domTextContent(el) { return el ? el.textContent || el.nodeValue || "" : ""; }
  function domSetTextContent(el, s) { if (el) { if (el.nodeType === 3 || el.nodeType === 8) el.nodeValue = s; else el.textContent = s; } }
  function domIsFragment(el) { return el ? el.nodeType === 11 : false; }
  function domIsChildOf(child, parent) { return !!(parent && child && child.parentNode === parent); }
  function domIsActiveElement(el) { return _hasDom && el === document.activeElement; }
  function domIsInputElement(el) {
    if (!el || !el.tagName) return false;
    var t = el.tagName;
    return t === "INPUT" || t === "TEXTAREA" || t === "SELECT";
  }
  function domFirstChild(el) { return el ? el.firstChild : null; }
  function domNextSibling(el) { return el ? el.nextSibling : null; }

  function domChildList(el) {
    if (!el || !el.childNodes) return [];
    return Array.prototype.slice.call(el.childNodes);
  }

  function domAttrList(el) {
    if (!el || !el.attributes) return [];
    var r = [];
    for (var i = 0; i < el.attributes.length; i++) {
      r.push([el.attributes[i].name, el.attributes[i].value]);
    }
    return r;
  }

  function domInsertBefore(parent, node, ref) {
    if (parent && node) parent.insertBefore(node, ref || null);
  }

  function domInsertAfter(ref, node) {
    if (ref && ref.parentNode && node) {
      ref.parentNode.insertBefore(node, ref.nextSibling);
    }
  }

  function domRemoveChild(parent, child) {
    if (parent && child && child.parentNode === parent) parent.removeChild(child);
  }

  function domReplaceChild(parent, newChild, oldChild) {
    if (parent && newChild && oldChild) parent.replaceChild(newChild, oldChild);
  }

  function domSetInnerHtml(el, html) {
    if (el) el.innerHTML = html;
  }

  function domInsertAdjacentHtml(el, pos, html) {
    if (el && el.insertAdjacentHTML) el.insertAdjacentHTML(pos, html);
  }

  function domGetStyle(el, prop) {
    return el && el.style ? el.style[prop] || "" : "";
  }

  function domSetStyle(el, prop, val) {
    if (el && el.style) el.style[prop] = val;
  }

  function domGetProp(el, name) { return el ? el[name] : NIL; }
  function domSetProp(el, name, val) { if (el) el[name] = val; }

  function domAddClass(el, cls) {
    if (el && el.classList) el.classList.add(cls);
  }

  function domRemoveClass(el, cls) {
    if (el && el.classList) el.classList.remove(cls);
  }

  function domDispatch(el, name, detail) {
    if (!_hasDom || !el) return false;
    var evt = new CustomEvent(name, { bubbles: true, cancelable: true, detail: detail || {} });
    return el.dispatchEvent(evt);
  }

  function domQuery(sel) {
    return _hasDom ? document.querySelector(sel) : null;
  }

  function domQueryAll(root, sel) {
    if (!root || !root.querySelectorAll) return [];
    return Array.prototype.slice.call(root.querySelectorAll(sel));
  }

  function domTagName(el) { return el && el.tagName ? el.tagName : ""; }


  // =========================================================================
  // Post-transpilation fixups
  // =========================================================================
  // The reference spec's call-lambda only handles Lambda objects, but HO forms
  // (map, reduce, etc.) may receive native primitives. Wrap to handle both.
  var _rawCallLambda = callLambda;
  callLambda = function(f, args, callerEnv) {
    if (typeof f === "function") return f.apply(null, args);
    return _rawCallLambda(f, args, callerEnv);
  };

  // Expose render functions as primitives so SX code can call them
  if (typeof renderToDom === "function") PRIMITIVES["render-to-dom"] = renderToDom;

  // Minimal fallback parser (no parser adapter)
  function parse(text) {
    throw new Error("Parser adapter not included — cannot parse SX source at runtime");
  }

  // =========================================================================
  // Public API
  // =========================================================================

  var componentEnv = {};

  function loadComponents(source) {
    var exprs = parse(source);
    for (var i = 0; i < exprs.length; i++) {
      trampoline(evalExpr(exprs[i], componentEnv));
    }
  }

  function render(source) {
    var exprs = parse(source);
    var frag = document.createDocumentFragment();
    for (var i = 0; i < exprs.length; i++) frag.appendChild(renderToDom(exprs[i], merge(componentEnv), null));
    return frag;
  }

  var Sx = {
    VERSION: "ref-2.0",
    parse: parse,
    parseAll: parse,
    eval: function(expr, env) { return trampoline(evalExpr(expr, env || merge(componentEnv))); },
    loadComponents: loadComponents,
    render: render,
    
    serialize: serialize,
    NIL: NIL,
    Symbol: Symbol,
    Keyword: Keyword,
    isTruthy: isSxTruthy,
    isNil: isNil,
    componentEnv: componentEnv,
    renderToDom: _hasDom ? function(expr, env, ns) { return renderToDom(expr, env || merge(componentEnv), ns || null); } : null,
    _version: "ref-2.0 (dom, bootstrap-compiled)"
  };

  if (typeof module !== "undefined" && module.exports) module.exports = Sx;
  else global.Sx = Sx;

})(typeof globalThis !== "undefined" ? globalThis : typeof window !== "undefined" ? window : this);