Changed from static to 11ty!

1 files changed, 1027 insertions, 0 deletions

diff --git a/node_modules/nunjucks/src/compiler.js b/node_modules/nunjucks/src/compiler.js
new file mode 100644
index 0000000..4958283
--- /dev/null
+++ b/node_modules/nunjucks/src/compiler.js
@@ -0,0 +1,1027 @@
+'use strict';
+
+function _inheritsLoose(subClass, superClass) { subClass.prototype = Object.create(superClass.prototype); subClass.prototype.constructor = subClass; _setPrototypeOf(subClass, superClass); }
+function _setPrototypeOf(o, p) { _setPrototypeOf = Object.setPrototypeOf ? Object.setPrototypeOf.bind() : function _setPrototypeOf(o, p) { o.__proto__ = p; return o; }; return _setPrototypeOf(o, p); }
+var parser = require('./parser');
+var transformer = require('./transformer');
+var nodes = require('./nodes');
+var _require = require('./lib'),
+  TemplateError = _require.TemplateError;
+var _require2 = require('./runtime'),
+  Frame = _require2.Frame;
+var _require3 = require('./object'),
+  Obj = _require3.Obj;
+
+// These are all the same for now, but shouldn't be passed straight
+// through
+var compareOps = {
+  '==': '==',
+  '===': '===',
+  '!=': '!=',
+  '!==': '!==',
+  '<': '<',
+  '>': '>',
+  '<=': '<=',
+  '>=': '>='
+};
+var Compiler = /*#__PURE__*/function (_Obj) {
+  _inheritsLoose(Compiler, _Obj);
+  function Compiler() {
+    return _Obj.apply(this, arguments) || this;
+  }
+  var _proto = Compiler.prototype;
+  _proto.init = function init(templateName, throwOnUndefined) {
+    this.templateName = templateName;
+    this.codebuf = [];
+    this.lastId = 0;
+    this.buffer = null;
+    this.bufferStack = [];
+    this._scopeClosers = '';
+    this.inBlock = false;
+    this.throwOnUndefined = throwOnUndefined;
+  };
+  _proto.fail = function fail(msg, lineno, colno) {
+    if (lineno !== undefined) {
+      lineno += 1;
+    }
+    if (colno !== undefined) {
+      colno += 1;
+    }
+    throw new TemplateError(msg, lineno, colno);
+  };
+  _proto._pushBuffer = function _pushBuffer() {
+    var id = this._tmpid();
+    this.bufferStack.push(this.buffer);
+    this.buffer = id;
+    this._emit("var " + this.buffer + " = \"\";");
+    return id;
+  };
+  _proto._popBuffer = function _popBuffer() {
+    this.buffer = this.bufferStack.pop();
+  };
+  _proto._emit = function _emit(code) {
+    this.codebuf.push(code);
+  };
+  _proto._emitLine = function _emitLine(code) {
+    this._emit(code + '\n');
+  };
+  _proto._emitLines = function _emitLines() {
+    var _this = this;
+    for (var _len = arguments.length, lines = new Array(_len), _key = 0; _key < _len; _key++) {
+      lines[_key] = arguments[_key];
+    }
+    lines.forEach(function (line) {
+      return _this._emitLine(line);
+    });
+  };
+  _proto._emitFuncBegin = function _emitFuncBegin(node, name) {
+    this.buffer = 'output';
+    this._scopeClosers = '';
+    this._emitLine("function " + name + "(env, context, frame, runtime, cb) {");
+    this._emitLine("var lineno = " + node.lineno + ";");
+    this._emitLine("var colno = " + node.colno + ";");
+    this._emitLine("var " + this.buffer + " = \"\";");
+    this._emitLine('try {');
+  };
+  _proto._emitFuncEnd = function _emitFuncEnd(noReturn) {
+    if (!noReturn) {
+      this._emitLine('cb(null, ' + this.buffer + ');');
+    }
+    this._closeScopeLevels();
+    this._emitLine('} catch (e) {');
+    this._emitLine('  cb(runtime.handleError(e, lineno, colno));');
+    this._emitLine('}');
+    this._emitLine('}');
+    this.buffer = null;
+  };
+  _proto._addScopeLevel = function _addScopeLevel() {
+    this._scopeClosers += '})';
+  };
+  _proto._closeScopeLevels = function _closeScopeLevels() {
+    this._emitLine(this._scopeClosers + ';');
+    this._scopeClosers = '';
+  };
+  _proto._withScopedSyntax = function _withScopedSyntax(func) {
+    var _scopeClosers = this._scopeClosers;
+    this._scopeClosers = '';
+    func.call(this);
+    this._closeScopeLevels();
+    this._scopeClosers = _scopeClosers;
+  };
+  _proto._makeCallback = function _makeCallback(res) {
+    var err = this._tmpid();
+    return 'function(' + err + (res ? ',' + res : '') + ') {\n' + 'if(' + err + ') { cb(' + err + '); return; }';
+  };
+  _proto._tmpid = function _tmpid() {
+    this.lastId++;
+    return 't_' + this.lastId;
+  };
+  _proto._templateName = function _templateName() {
+    return this.templateName == null ? 'undefined' : JSON.stringify(this.templateName);
+  };
+  _proto._compileChildren = function _compileChildren(node, frame) {
+    var _this2 = this;
+    node.children.forEach(function (child) {
+      _this2.compile(child, frame);
+    });
+  };
+  _proto._compileAggregate = function _compileAggregate(node, frame, startChar, endChar) {
+    var _this3 = this;
+    if (startChar) {
+      this._emit(startChar);
+    }
+    node.children.forEach(function (child, i) {
+      if (i > 0) {
+        _this3._emit(',');
+      }
+      _this3.compile(child, frame);
+    });
+    if (endChar) {
+      this._emit(endChar);
+    }
+  };
+  _proto._compileExpression = function _compileExpression(node, frame) {
+    // TODO: I'm not really sure if this type check is worth it or
+    // not.
+    this.assertType(node, nodes.Literal, nodes.Symbol, nodes.Group, nodes.Array, nodes.Dict, nodes.FunCall, nodes.Caller, nodes.Filter, nodes.LookupVal, nodes.Compare, nodes.InlineIf, nodes.In, nodes.Is, nodes.And, nodes.Or, nodes.Not, nodes.Add, nodes.Concat, nodes.Sub, nodes.Mul, nodes.Div, nodes.FloorDiv, nodes.Mod, nodes.Pow, nodes.Neg, nodes.Pos, nodes.Compare, nodes.NodeList);
+    this.compile(node, frame);
+  };
+  _proto.assertType = function assertType(node) {
+    for (var _len2 = arguments.length, types = new Array(_len2 > 1 ? _len2 - 1 : 0), _key2 = 1; _key2 < _len2; _key2++) {
+      types[_key2 - 1] = arguments[_key2];
+    }
+    if (!types.some(function (t) {
+      return node instanceof t;
+    })) {
+      this.fail("assertType: invalid type: " + node.typename, node.lineno, node.colno);
+    }
+  };
+  _proto.compileCallExtension = function compileCallExtension(node, frame, async) {
+    var _this4 = this;
+    var args = node.args;
+    var contentArgs = node.contentArgs;
+    var autoescape = typeof node.autoescape === 'boolean' ? node.autoescape : true;
+    if (!async) {
+      this._emit(this.buffer + " += runtime.suppressValue(");
+    }
+    this._emit("env.getExtension(\"" + node.extName + "\")[\"" + node.prop + "\"](");
+    this._emit('context');
+    if (args || contentArgs) {
+      this._emit(',');
+    }
+    if (args) {
+      if (!(args instanceof nodes.NodeList)) {
+        this.fail('compileCallExtension: arguments must be a NodeList, ' + 'use `parser.parseSignature`');
+      }
+      args.children.forEach(function (arg, i) {
+        // Tag arguments are passed normally to the call. Note
+        // that keyword arguments are turned into a single js
+        // object as the last argument, if they exist.
+        _this4._compileExpression(arg, frame);
+        if (i !== args.children.length - 1 || contentArgs.length) {
+          _this4._emit(',');
+        }
+      });
+    }
+    if (contentArgs.length) {
+      contentArgs.forEach(function (arg, i) {
+        if (i > 0) {
+          _this4._emit(',');
+        }
+        if (arg) {
+          _this4._emitLine('function(cb) {');
+          _this4._emitLine('if(!cb) { cb = function(err) { if(err) { throw err; }}}');
+          var id = _this4._pushBuffer();
+          _this4._withScopedSyntax(function () {
+            _this4.compile(arg, frame);
+            _this4._emitLine("cb(null, " + id + ");");
+          });
+          _this4._popBuffer();
+          _this4._emitLine("return " + id + ";");
+          _this4._emitLine('}');
+        } else {
+          _this4._emit('null');
+        }
+      });
+    }
+    if (async) {
+      var res = this._tmpid();
+      this._emitLine(', ' + this._makeCallback(res));
+      this._emitLine(this.buffer + " += runtime.suppressValue(" + res + ", " + autoescape + " && env.opts.autoescape);");
+      this._addScopeLevel();
+    } else {
+      this._emit(')');
+      this._emit(", " + autoescape + " && env.opts.autoescape);\n");
+    }
+  };
+  _proto.compileCallExtensionAsync = function compileCallExtensionAsync(node, frame) {
+    this.compileCallExtension(node, frame, true);
+  };
+  _proto.compileNodeList = function compileNodeList(node, frame) {
+    this._compileChildren(node, frame);
+  };
+  _proto.compileLiteral = function compileLiteral(node) {
+    if (typeof node.value === 'string') {
+      var val = node.value.replace(/\\/g, '\\\\');
+      val = val.replace(/"/g, '\\"');
+      val = val.replace(/\n/g, '\\n');
+      val = val.replace(/\r/g, '\\r');
+      val = val.replace(/\t/g, '\\t');
+      val = val.replace(/\u2028/g, "\\u2028");
+      this._emit("\"" + val + "\"");
+    } else if (node.value === null) {
+      this._emit('null');
+    } else {
+      this._emit(node.value.toString());
+    }
+  };
+  _proto.compileSymbol = function compileSymbol(node, frame) {
+    var name = node.value;
+    var v = frame.lookup(name);
+    if (v) {
+      this._emit(v);
+    } else {
+      this._emit('runtime.contextOrFrameLookup(' + 'context, frame, "' + name + '")');
+    }
+  };
+  _proto.compileGroup = function compileGroup(node, frame) {
+    this._compileAggregate(node, frame, '(', ')');
+  };
+  _proto.compileArray = function compileArray(node, frame) {
+    this._compileAggregate(node, frame, '[', ']');
+  };
+  _proto.compileDict = function compileDict(node, frame) {
+    this._compileAggregate(node, frame, '{', '}');
+  };
+  _proto.compilePair = function compilePair(node, frame) {
+    var key = node.key;
+    var val = node.value;
+    if (key instanceof nodes.Symbol) {
+      key = new nodes.Literal(key.lineno, key.colno, key.value);
+    } else if (!(key instanceof nodes.Literal && typeof key.value === 'string')) {
+      this.fail('compilePair: Dict keys must be strings or names', key.lineno, key.colno);
+    }
+    this.compile(key, frame);
+    this._emit(': ');
+    this._compileExpression(val, frame);
+  };
+  _proto.compileInlineIf = function compileInlineIf(node, frame) {
+    this._emit('(');
+    this.compile(node.cond, frame);
+    this._emit('?');
+    this.compile(node.body, frame);
+    this._emit(':');
+    if (node.else_ !== null) {
+      this.compile(node.else_, frame);
+    } else {
+      this._emit('""');
+    }
+    this._emit(')');
+  };
+  _proto.compileIn = function compileIn(node, frame) {
+    this._emit('runtime.inOperator(');
+    this.compile(node.left, frame);
+    this._emit(',');
+    this.compile(node.right, frame);
+    this._emit(')');
+  };
+  _proto.compileIs = function compileIs(node, frame) {
+    // first, we need to try to get the name of the test function, if it's a
+    // callable (i.e., has args) and not a symbol.
+    var right = node.right.name ? node.right.name.value
+    // otherwise go with the symbol value
+    : node.right.value;
+    this._emit('env.getTest("' + right + '").call(context, ');
+    this.compile(node.left, frame);
+    // compile the arguments for the callable if they exist
+    if (node.right.args) {
+      this._emit(',');
+      this.compile(node.right.args, frame);
+    }
+    this._emit(') === true');
+  };
+  _proto._binOpEmitter = function _binOpEmitter(node, frame, str) {
+    this.compile(node.left, frame);
+    this._emit(str);
+    this.compile(node.right, frame);
+  }
+
+  // ensure concatenation instead of addition
+  // by adding empty string in between
+  ;
+  _proto.compileOr = function compileOr(node, frame) {
+    return this._binOpEmitter(node, frame, ' || ');
+  };
+  _proto.compileAnd = function compileAnd(node, frame) {
+    return this._binOpEmitter(node, frame, ' && ');
+  };
+  _proto.compileAdd = function compileAdd(node, frame) {
+    return this._binOpEmitter(node, frame, ' + ');
+  };
+  _proto.compileConcat = function compileConcat(node, frame) {
+    return this._binOpEmitter(node, frame, ' + "" + ');
+  };
+  _proto.compileSub = function compileSub(node, frame) {
+    return this._binOpEmitter(node, frame, ' - ');
+  };
+  _proto.compileMul = function compileMul(node, frame) {
+    return this._binOpEmitter(node, frame, ' * ');
+  };
+  _proto.compileDiv = function compileDiv(node, frame) {
+    return this._binOpEmitter(node, frame, ' / ');
+  };
+  _proto.compileMod = function compileMod(node, frame) {
+    return this._binOpEmitter(node, frame, ' % ');
+  };
+  _proto.compileNot = function compileNot(node, frame) {
+    this._emit('!');
+    this.compile(node.target, frame);
+  };
+  _proto.compileFloorDiv = function compileFloorDiv(node, frame) {
+    this._emit('Math.floor(');
+    this.compile(node.left, frame);
+    this._emit(' / ');
+    this.compile(node.right, frame);
+    this._emit(')');
+  };
+  _proto.compilePow = function compilePow(node, frame) {
+    this._emit('Math.pow(');
+    this.compile(node.left, frame);
+    this._emit(', ');
+    this.compile(node.right, frame);
+    this._emit(')');
+  };
+  _proto.compileNeg = function compileNeg(node, frame) {
+    this._emit('-');
+    this.compile(node.target, frame);
+  };
+  _proto.compilePos = function compilePos(node, frame) {
+    this._emit('+');
+    this.compile(node.target, frame);
+  };
+  _proto.compileCompare = function compileCompare(node, frame) {
+    var _this5 = this;
+    this.compile(node.expr, frame);
+    node.ops.forEach(function (op) {
+      _this5._emit(" " + compareOps[op.type] + " ");
+      _this5.compile(op.expr, frame);
+    });
+  };
+  _proto.compileLookupVal = function compileLookupVal(node, frame) {
+    this._emit('runtime.memberLookup((');
+    this._compileExpression(node.target, frame);
+    this._emit('),');
+    this._compileExpression(node.val, frame);
+    this._emit(')');
+  };
+  _proto._getNodeName = function _getNodeName(node) {
+    switch (node.typename) {
+      case 'Symbol':
+        return node.value;
+      case 'FunCall':
+        return 'the return value of (' + this._getNodeName(node.name) + ')';
+      case 'LookupVal':
+        return this._getNodeName(node.target) + '["' + this._getNodeName(node.val) + '"]';
+      case 'Literal':
+        return node.value.toString();
+      default:
+        return '--expression--';
+    }
+  };
+  _proto.compileFunCall = function compileFunCall(node, frame) {
+    // Keep track of line/col info at runtime by settings
+    // variables within an expression. An expression in javascript
+    // like (x, y, z) returns the last value, and x and y can be
+    // anything
+    this._emit('(lineno = ' + node.lineno + ', colno = ' + node.colno + ', ');
+    this._emit('runtime.callWrap(');
+    // Compile it as normal.
+    this._compileExpression(node.name, frame);
+
+    // Output the name of what we're calling so we can get friendly errors
+    // if the lookup fails.
+    this._emit(', "' + this._getNodeName(node.name).replace(/"/g, '\\"') + '", context, ');
+    this._compileAggregate(node.args, frame, '[', '])');
+    this._emit(')');
+  };
+  _proto.compileFilter = function compileFilter(node, frame) {
+    var name = node.name;
+    this.assertType(name, nodes.Symbol);
+    this._emit('env.getFilter("' + name.value + '").call(context, ');
+    this._compileAggregate(node.args, frame);
+    this._emit(')');
+  };
+  _proto.compileFilterAsync = function compileFilterAsync(node, frame) {
+    var name = node.name;
+    var symbol = node.symbol.value;
+    this.assertType(name, nodes.Symbol);
+    frame.set(symbol, symbol);
+    this._emit('env.getFilter("' + name.value + '").call(context, ');
+    this._compileAggregate(node.args, frame);
+    this._emitLine(', ' + this._makeCallback(symbol));
+    this._addScopeLevel();
+  };
+  _proto.compileKeywordArgs = function compileKeywordArgs(node, frame) {
+    this._emit('runtime.makeKeywordArgs(');
+    this.compileDict(node, frame);
+    this._emit(')');
+  };
+  _proto.compileSet = function compileSet(node, frame) {
+    var _this6 = this;
+    var ids = [];
+
+    // Lookup the variable names for each identifier and create
+    // new ones if necessary
+    node.targets.forEach(function (target) {
+      var name = target.value;
+      var id = frame.lookup(name);
+      if (id === null || id === undefined) {
+        id = _this6._tmpid();
+
+        // Note: This relies on js allowing scope across
+        // blocks, in case this is created inside an `if`
+        _this6._emitLine('var ' + id + ';');
+      }
+      ids.push(id);
+    });
+    if (node.value) {
+      this._emit(ids.join(' = ') + ' = ');
+      this._compileExpression(node.value, frame);
+      this._emitLine(';');
+    } else {
+      this._emit(ids.join(' = ') + ' = ');
+      this.compile(node.body, frame);
+      this._emitLine(';');
+    }
+    node.targets.forEach(function (target, i) {
+      var id = ids[i];
+      var name = target.value;
+
+      // We are running this for every var, but it's very
+      // uncommon to assign to multiple vars anyway
+      _this6._emitLine("frame.set(\"" + name + "\", " + id + ", true);");
+      _this6._emitLine('if(frame.topLevel) {');
+      _this6._emitLine("context.setVariable(\"" + name + "\", " + id + ");");
+      _this6._emitLine('}');
+      if (name.charAt(0) !== '_') {
+        _this6._emitLine('if(frame.topLevel) {');
+        _this6._emitLine("context.addExport(\"" + name + "\", " + id + ");");
+        _this6._emitLine('}');
+      }
+    });
+  };
+  _proto.compileSwitch = function compileSwitch(node, frame) {
+    var _this7 = this;
+    this._emit('switch (');
+    this.compile(node.expr, frame);
+    this._emit(') {');
+    node.cases.forEach(function (c, i) {
+      _this7._emit('case ');
+      _this7.compile(c.cond, frame);
+      _this7._emit(': ');
+      _this7.compile(c.body, frame);
+      // preserve fall-throughs
+      if (c.body.children.length) {
+        _this7._emitLine('break;');
+      }
+    });
+    if (node.default) {
+      this._emit('default:');
+      this.compile(node.default, frame);
+    }
+    this._emit('}');
+  };
+  _proto.compileIf = function compileIf(node, frame, async) {
+    var _this8 = this;
+    this._emit('if(');
+    this._compileExpression(node.cond, frame);
+    this._emitLine(') {');
+    this._withScopedSyntax(function () {
+      _this8.compile(node.body, frame);
+      if (async) {
+        _this8._emit('cb()');
+      }
+    });
+    if (node.else_) {
+      this._emitLine('}\nelse {');
+      this._withScopedSyntax(function () {
+        _this8.compile(node.else_, frame);
+        if (async) {
+          _this8._emit('cb()');
+        }
+      });
+    } else if (async) {
+      this._emitLine('}\nelse {');
+      this._emit('cb()');
+    }
+    this._emitLine('}');
+  };
+  _proto.compileIfAsync = function compileIfAsync(node, frame) {
+    this._emit('(function(cb) {');
+    this.compileIf(node, frame, true);
+    this._emit('})(' + this._makeCallback());
+    this._addScopeLevel();
+  };
+  _proto._emitLoopBindings = function _emitLoopBindings(node, arr, i, len) {
+    var _this9 = this;
+    var bindings = [{
+      name: 'index',
+      val: i + " + 1"
+    }, {
+      name: 'index0',
+      val: i
+    }, {
+      name: 'revindex',
+      val: len + " - " + i
+    }, {
+      name: 'revindex0',
+      val: len + " - " + i + " - 1"
+    }, {
+      name: 'first',
+      val: i + " === 0"
+    }, {
+      name: 'last',
+      val: i + " === " + len + " - 1"
+    }, {
+      name: 'length',
+      val: len
+    }];
+    bindings.forEach(function (b) {
+      _this9._emitLine("frame.set(\"loop." + b.name + "\", " + b.val + ");");
+    });
+  };
+  _proto.compileFor = function compileFor(node, frame) {
+    var _this10 = this;
+    // Some of this code is ugly, but it keeps the generated code
+    // as fast as possible. ForAsync also shares some of this, but
+    // not much.
+
+    var i = this._tmpid();
+    var len = this._tmpid();
+    var arr = this._tmpid();
+    frame = frame.push();
+    this._emitLine('frame = frame.push();');
+    this._emit("var " + arr + " = ");
+    this._compileExpression(node.arr, frame);
+    this._emitLine(';');
+    this._emit("if(" + arr + ") {");
+    this._emitLine(arr + ' = runtime.fromIterator(' + arr + ');');
+
+    // If multiple names are passed, we need to bind them
+    // appropriately
+    if (node.name instanceof nodes.Array) {
+      this._emitLine("var " + i + ";");
+
+      // The object could be an arroy or object. Note that the
+      // body of the loop is duplicated for each condition, but
+      // we are optimizing for speed over size.
+      this._emitLine("if(runtime.isArray(" + arr + ")) {");
+      this._emitLine("var " + len + " = " + arr + ".length;");
+      this._emitLine("for(" + i + "=0; " + i + " < " + arr + ".length; " + i + "++) {");
+
+      // Bind each declared var
+      node.name.children.forEach(function (child, u) {
+        var tid = _this10._tmpid();
+        _this10._emitLine("var " + tid + " = " + arr + "[" + i + "][" + u + "];");
+        _this10._emitLine("frame.set(\"" + child + "\", " + arr + "[" + i + "][" + u + "]);");
+        frame.set(node.name.children[u].value, tid);
+      });
+      this._emitLoopBindings(node, arr, i, len);
+      this._withScopedSyntax(function () {
+        _this10.compile(node.body, frame);
+      });
+      this._emitLine('}');
+      this._emitLine('} else {');
+      // Iterate over the key/values of an object
+      var _node$name$children = node.name.children,
+        key = _node$name$children[0],
+        val = _node$name$children[1];
+      var k = this._tmpid();
+      var v = this._tmpid();
+      frame.set(key.value, k);
+      frame.set(val.value, v);
+      this._emitLine(i + " = -1;");
+      this._emitLine("var " + len + " = runtime.keys(" + arr + ").length;");
+      this._emitLine("for(var " + k + " in " + arr + ") {");
+      this._emitLine(i + "++;");
+      this._emitLine("var " + v + " = " + arr + "[" + k + "];");
+      this._emitLine("frame.set(\"" + key.value + "\", " + k + ");");
+      this._emitLine("frame.set(\"" + val.value + "\", " + v + ");");
+      this._emitLoopBindings(node, arr, i, len);
+      this._withScopedSyntax(function () {
+        _this10.compile(node.body, frame);
+      });
+      this._emitLine('}');
+      this._emitLine('}');
+    } else {
+      // Generate a typical array iteration
+      var _v = this._tmpid();
+      frame.set(node.name.value, _v);
+      this._emitLine("var " + len + " = " + arr + ".length;");
+      this._emitLine("for(var " + i + "=0; " + i + " < " + arr + ".length; " + i + "++) {");
+      this._emitLine("var " + _v + " = " + arr + "[" + i + "];");
+      this._emitLine("frame.set(\"" + node.name.value + "\", " + _v + ");");
+      this._emitLoopBindings(node, arr, i, len);
+      this._withScopedSyntax(function () {
+        _this10.compile(node.body, frame);
+      });
+      this._emitLine('}');
+    }
+    this._emitLine('}');
+    if (node.else_) {
+      this._emitLine('if (!' + len + ') {');
+      this.compile(node.else_, frame);
+      this._emitLine('}');
+    }
+    this._emitLine('frame = frame.pop();');
+  };
+  _proto._compileAsyncLoop = function _compileAsyncLoop(node, frame, parallel) {
+    var _this11 = this;
+    // This shares some code with the For tag, but not enough to
+    // worry about. This iterates across an object asynchronously,
+    // but not in parallel.
+
+    var i = this._tmpid();
+    var len = this._tmpid();
+    var arr = this._tmpid();
+    var asyncMethod = parallel ? 'asyncAll' : 'asyncEach';
+    frame = frame.push();
+    this._emitLine('frame = frame.push();');
+    this._emit('var ' + arr + ' = runtime.fromIterator(');
+    this._compileExpression(node.arr, frame);
+    this._emitLine(');');
+    if (node.name instanceof nodes.Array) {
+      var arrayLen = node.name.children.length;
+      this._emit("runtime." + asyncMethod + "(" + arr + ", " + arrayLen + ", function(");
+      node.name.children.forEach(function (name) {
+        _this11._emit(name.value + ",");
+      });
+      this._emit(i + ',' + len + ',next) {');
+      node.name.children.forEach(function (name) {
+        var id = name.value;
+        frame.set(id, id);
+        _this11._emitLine("frame.set(\"" + id + "\", " + id + ");");
+      });
+    } else {
+      var id = node.name.value;
+      this._emitLine("runtime." + asyncMethod + "(" + arr + ", 1, function(" + id + ", " + i + ", " + len + ",next) {");
+      this._emitLine('frame.set("' + id + '", ' + id + ');');
+      frame.set(id, id);
+    }
+    this._emitLoopBindings(node, arr, i, len);
+    this._withScopedSyntax(function () {
+      var buf;
+      if (parallel) {
+        buf = _this11._pushBuffer();
+      }
+      _this11.compile(node.body, frame);
+      _this11._emitLine('next(' + i + (buf ? ',' + buf : '') + ');');
+      if (parallel) {
+        _this11._popBuffer();
+      }
+    });
+    var output = this._tmpid();
+    this._emitLine('}, ' + this._makeCallback(output));
+    this._addScopeLevel();
+    if (parallel) {
+      this._emitLine(this.buffer + ' += ' + output + ';');
+    }
+    if (node.else_) {
+      this._emitLine('if (!' + arr + '.length) {');
+      this.compile(node.else_, frame);
+      this._emitLine('}');
+    }
+    this._emitLine('frame = frame.pop();');
+  };
+  _proto.compileAsyncEach = function compileAsyncEach(node, frame) {
+    this._compileAsyncLoop(node, frame);
+  };
+  _proto.compileAsyncAll = function compileAsyncAll(node, frame) {
+    this._compileAsyncLoop(node, frame, true);
+  };
+  _proto._compileMacro = function _compileMacro(node, frame) {
+    var _this12 = this;
+    var args = [];
+    var kwargs = null;
+    var funcId = 'macro_' + this._tmpid();
+    var keepFrame = frame !== undefined;
+
+    // Type check the definition of the args
+    node.args.children.forEach(function (arg, i) {
+      if (i === node.args.children.length - 1 && arg instanceof nodes.Dict) {
+        kwargs = arg;
+      } else {
+        _this12.assertType(arg, nodes.Symbol);
+        args.push(arg);
+      }
+    });
+    var realNames = [].concat(args.map(function (n) {
+      return "l_" + n.value;
+    }), ['kwargs']);
+
+    // Quoted argument names
+    var argNames = args.map(function (n) {
+      return "\"" + n.value + "\"";
+    });
+    var kwargNames = (kwargs && kwargs.children || []).map(function (n) {
+      return "\"" + n.key.value + "\"";
+    });
+
+    // We pass a function to makeMacro which destructures the
+    // arguments so support setting positional args with keywords
+    // args and passing keyword args as positional args
+    // (essentially default values). See runtime.js.
+    var currFrame;
+    if (keepFrame) {
+      currFrame = frame.push(true);
+    } else {
+      currFrame = new Frame();
+    }
+    this._emitLines("var " + funcId + " = runtime.makeMacro(", "[" + argNames.join(', ') + "], ", "[" + kwargNames.join(', ') + "], ", "function (" + realNames.join(', ') + ") {", 'var callerFrame = frame;', 'frame = ' + (keepFrame ? 'frame.push(true);' : 'new runtime.Frame();'), 'kwargs = kwargs || {};', 'if (Object.prototype.hasOwnProperty.call(kwargs, "caller")) {', 'frame.set("caller", kwargs.caller); }');
+
+    // Expose the arguments to the template. Don't need to use
+    // random names because the function
+    // will create a new run-time scope for us
+    args.forEach(function (arg) {
+      _this12._emitLine("frame.set(\"" + arg.value + "\", l_" + arg.value + ");");
+      currFrame.set(arg.value, "l_" + arg.value);
+    });
+
+    // Expose the keyword arguments
+    if (kwargs) {
+      kwargs.children.forEach(function (pair) {
+        var name = pair.key.value;
+        _this12._emit("frame.set(\"" + name + "\", ");
+        _this12._emit("Object.prototype.hasOwnProperty.call(kwargs, \"" + name + "\")");
+        _this12._emit(" ? kwargs[\"" + name + "\"] : ");
+        _this12._compileExpression(pair.value, currFrame);
+        _this12._emit(');');
+      });
+    }
+    var bufferId = this._pushBuffer();
+    this._withScopedSyntax(function () {
+      _this12.compile(node.body, currFrame);
+    });
+    this._emitLine('frame = ' + (keepFrame ? 'frame.pop();' : 'callerFrame;'));
+    this._emitLine("return new runtime.SafeString(" + bufferId + ");");
+    this._emitLine('});');
+    this._popBuffer();
+    return funcId;
+  };
+  _proto.compileMacro = function compileMacro(node, frame) {
+    var funcId = this._compileMacro(node);
+
+    // Expose the macro to the templates
+    var name = node.name.value;
+    frame.set(name, funcId);
+    if (frame.parent) {
+      this._emitLine("frame.set(\"" + name + "\", " + funcId + ");");
+    } else {
+      if (node.name.value.charAt(0) !== '_') {
+        this._emitLine("context.addExport(\"" + name + "\");");
+      }
+      this._emitLine("context.setVariable(\"" + name + "\", " + funcId + ");");
+    }
+  };
+  _proto.compileCaller = function compileCaller(node, frame) {
+    // basically an anonymous "macro expression"
+    this._emit('(function (){');
+    var funcId = this._compileMacro(node, frame);
+    this._emit("return " + funcId + ";})()");
+  };
+  _proto._compileGetTemplate = function _compileGetTemplate(node, frame, eagerCompile, ignoreMissing) {
+    var parentTemplateId = this._tmpid();
+    var parentName = this._templateName();
+    var cb = this._makeCallback(parentTemplateId);
+    var eagerCompileArg = eagerCompile ? 'true' : 'false';
+    var ignoreMissingArg = ignoreMissing ? 'true' : 'false';
+    this._emit('env.getTemplate(');
+    this._compileExpression(node.template, frame);
+    this._emitLine(", " + eagerCompileArg + ", " + parentName + ", " + ignoreMissingArg + ", " + cb);
+    return parentTemplateId;
+  };
+  _proto.compileImport = function compileImport(node, frame) {
+    var target = node.target.value;
+    var id = this._compileGetTemplate(node, frame, false, false);
+    this._addScopeLevel();
+    this._emitLine(id + '.getExported(' + (node.withContext ? 'context.getVariables(), frame, ' : '') + this._makeCallback(id));
+    this._addScopeLevel();
+    frame.set(target, id);
+    if (frame.parent) {
+      this._emitLine("frame.set(\"" + target + "\", " + id + ");");
+    } else {
+      this._emitLine("context.setVariable(\"" + target + "\", " + id + ");");
+    }
+  };
+  _proto.compileFromImport = function compileFromImport(node, frame) {
+    var _this13 = this;
+    var importedId = this._compileGetTemplate(node, frame, false, false);
+    this._addScopeLevel();
+    this._emitLine(importedId + '.getExported(' + (node.withContext ? 'context.getVariables(), frame, ' : '') + this._makeCallback(importedId));
+    this._addScopeLevel();
+    node.names.children.forEach(function (nameNode) {
+      var name;
+      var alias;
+      var id = _this13._tmpid();
+      if (nameNode instanceof nodes.Pair) {
+        name = nameNode.key.value;
+        alias = nameNode.value.value;
+      } else {
+        name = nameNode.value;
+        alias = name;
+      }
+      _this13._emitLine("if(Object.prototype.hasOwnProperty.call(" + importedId + ", \"" + name + "\")) {");
+      _this13._emitLine("var " + id + " = " + importedId + "." + name + ";");
+      _this13._emitLine('} else {');
+      _this13._emitLine("cb(new Error(\"cannot import '" + name + "'\")); return;");
+      _this13._emitLine('}');
+      frame.set(alias, id);
+      if (frame.parent) {
+        _this13._emitLine("frame.set(\"" + alias + "\", " + id + ");");
+      } else {
+        _this13._emitLine("context.setVariable(\"" + alias + "\", " + id + ");");
+      }
+    });
+  };
+  _proto.compileBlock = function compileBlock(node) {
+    var id = this._tmpid();
+
+    // If we are executing outside a block (creating a top-level
+    // block), we really don't want to execute its code because it
+    // will execute twice: once when the child template runs and
+    // again when the parent template runs. Note that blocks
+    // within blocks will *always* execute immediately *and*
+    // wherever else they are invoked (like used in a parent
+    // template). This may have behavioral differences from jinja
+    // because blocks can have side effects, but it seems like a
+    // waste of performance to always execute huge top-level
+    // blocks twice
+    if (!this.inBlock) {
+      this._emit('(parentTemplate ? function(e, c, f, r, cb) { cb(""); } : ');
+    }
+    this._emit("context.getBlock(\"" + node.name.value + "\")");
+    if (!this.inBlock) {
+      this._emit(')');
+    }
+    this._emitLine('(env, context, frame, runtime, ' + this._makeCallback(id));
+    this._emitLine(this.buffer + " += " + id + ";");
+    this._addScopeLevel();
+  };
+  _proto.compileSuper = function compileSuper(node, frame) {
+    var name = node.blockName.value;
+    var id = node.symbol.value;
+    var cb = this._makeCallback(id);
+    this._emitLine("context.getSuper(env, \"" + name + "\", b_" + name + ", frame, runtime, " + cb);
+    this._emitLine(id + " = runtime.markSafe(" + id + ");");
+    this._addScopeLevel();
+    frame.set(id, id);
+  };
+  _proto.compileExtends = function compileExtends(node, frame) {
+    var k = this._tmpid();
+    var parentTemplateId = this._compileGetTemplate(node, frame, true, false);
+
+    // extends is a dynamic tag and can occur within a block like
+    // `if`, so if this happens we need to capture the parent
+    // template in the top-level scope
+    this._emitLine("parentTemplate = " + parentTemplateId);
+    this._emitLine("for(var " + k + " in parentTemplate.blocks) {");
+    this._emitLine("context.addBlock(" + k + ", parentTemplate.blocks[" + k + "]);");
+    this._emitLine('}');
+    this._addScopeLevel();
+  };
+  _proto.compileInclude = function compileInclude(node, frame) {
+    this._emitLine('var tasks = [];');
+    this._emitLine('tasks.push(');
+    this._emitLine('function(callback) {');
+    var id = this._compileGetTemplate(node, frame, false, node.ignoreMissing);
+    this._emitLine("callback(null," + id + ");});");
+    this._emitLine('});');
+    var id2 = this._tmpid();
+    this._emitLine('tasks.push(');
+    this._emitLine('function(template, callback){');
+    this._emitLine('template.render(context.getVariables(), frame, ' + this._makeCallback(id2));
+    this._emitLine('callback(null,' + id2 + ');});');
+    this._emitLine('});');
+    this._emitLine('tasks.push(');
+    this._emitLine('function(result, callback){');
+    this._emitLine(this.buffer + " += result;");
+    this._emitLine('callback(null);');
+    this._emitLine('});');
+    this._emitLine('env.waterfall(tasks, function(){');
+    this._addScopeLevel();
+  };
+  _proto.compileTemplateData = function compileTemplateData(node, frame) {
+    this.compileLiteral(node, frame);
+  };
+  _proto.compileCapture = function compileCapture(node, frame) {
+    var _this14 = this;
+    // we need to temporarily override the current buffer id as 'output'
+    // so the set block writes to the capture output instead of the buffer
+    var buffer = this.buffer;
+    this.buffer = 'output';
+    this._emitLine('(function() {');
+    this._emitLine('var output = "";');
+    this._withScopedSyntax(function () {
+      _this14.compile(node.body, frame);
+    });
+    this._emitLine('return output;');
+    this._emitLine('})()');
+    // and of course, revert back to the old buffer id
+    this.buffer = buffer;
+  };
+  _proto.compileOutput = function compileOutput(node, frame) {
+    var _this15 = this;
+    var children = node.children;
+    children.forEach(function (child) {
+      // TemplateData is a special case because it is never
+      // autoescaped, so simply output it for optimization
+      if (child instanceof nodes.TemplateData) {
+        if (child.value) {
+          _this15._emit(_this15.buffer + " += ");
+          _this15.compileLiteral(child, frame);
+          _this15._emitLine(';');
+        }
+      } else {
+        _this15._emit(_this15.buffer + " += runtime.suppressValue(");
+        if (_this15.throwOnUndefined) {
+          _this15._emit('runtime.ensureDefined(');
+        }
+        _this15.compile(child, frame);
+        if (_this15.throwOnUndefined) {
+          _this15._emit("," + node.lineno + "," + node.colno + ")");
+        }
+        _this15._emit(', env.opts.autoescape);\n');
+      }
+    });
+  };
+  _proto.compileRoot = function compileRoot(node, frame) {
+    var _this16 = this;
+    if (frame) {
+      this.fail('compileRoot: root node can\'t have frame');
+    }
+    frame = new Frame();
+    this._emitFuncBegin(node, 'root');
+    this._emitLine('var parentTemplate = null;');
+    this._compileChildren(node, frame);
+    this._emitLine('if(parentTemplate) {');
+    this._emitLine('parentTemplate.rootRenderFunc(env, context, frame, runtime, cb);');
+    this._emitLine('} else {');
+    this._emitLine("cb(null, " + this.buffer + ");");
+    this._emitLine('}');
+    this._emitFuncEnd(true);
+    this.inBlock = true;
+    var blockNames = [];
+    var blocks = node.findAll(nodes.Block);
+    blocks.forEach(function (block, i) {
+      var name = block.name.value;
+      if (blockNames.indexOf(name) !== -1) {
+        throw new Error("Block \"" + name + "\" defined more than once.");
+      }
+      blockNames.push(name);
+      _this16._emitFuncBegin(block, "b_" + name);
+      var tmpFrame = new Frame();
+      _this16._emitLine('var frame = frame.push(true);');
+      _this16.compile(block.body, tmpFrame);
+      _this16._emitFuncEnd();
+    });
+    this._emitLine('return {');
+    blocks.forEach(function (block, i) {
+      var blockName = "b_" + block.name.value;
+      _this16._emitLine(blockName + ": " + blockName + ",");
+    });
+    this._emitLine('root: root\n};');
+  };
+  _proto.compile = function compile(node, frame) {
+    var _compile = this['compile' + node.typename];
+    if (_compile) {
+      _compile.call(this, node, frame);
+    } else {
+      this.fail("compile: Cannot compile node: " + node.typename, node.lineno, node.colno);
+    }
+  };
+  _proto.getCode = function getCode() {
+    return this.codebuf.join('');
+  };
+  return Compiler;
+}(Obj);
+module.exports = {
+  compile: function compile(src, asyncFilters, extensions, name, opts) {
+    if (opts === void 0) {
+      opts = {};
+    }
+    var c = new Compiler(name, opts.throwOnUndefined);
+
+    // Run the extension preprocessors against the source.
+    var preprocessors = (extensions || []).map(function (ext) {
+      return ext.preprocess;
+    }).filter(function (f) {
+      return !!f;
+    });
+    var processedSrc = preprocessors.reduce(function (s, processor) {
+      return processor(s);
+    }, src);
+    c.compile(transformer.transform(parser.parse(processedSrc, extensions, opts), asyncFilters, name));
+    return c.getCode();
+  },
+  Compiler: Compiler
+};
\ No newline at end of file