closure.log

gulp-google-closure-compiler: /polymer.html_script_0.js:20: WARNING - Returned type does not match declared return type.
Expected : Object|null
Found    : undefined

    return window.Polymer._polymerFn(info);
    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

/polymer.html_script_10.js:144: WARNING - Property name never defined on trigger of type Object
      let triggerPath = trigger.name;
                        ^^^^^^^^^^^^

/polymer.html_script_10.js:168: WARNING - Property property never defined on info of type {methodName:?}
    let changedProp = info.property;
                      ^^^^^^^^^^^^^

/polymer.html_script_10.js:170: WARNING - Property __data never defined on inst of type Object
      fn.call(inst, inst.__data[changedProp], oldProps[changedProp]);
                    ^^^^^^^^^^^

/polymer.html_script_10.js:195: WARNING - Property __notifyEffects never defined on inst of type Element
    let fxs = inst.__notifyEffects;
              ^^^^^^^^^^^^^^^^^^^^

/polymer.html_script_10.js:225: WARNING - Missing return statement. Function expected to return boolean.
  function notifyPath(inst, path, props) {
  ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

/polymer.html_script_10.js:273: WARNING - Property __data never defined on inst of type Element
    let value = path ? Polymer.Path.get(inst, path) : inst.__data[property];
                                                      ^^^^^^^^^^^

/polymer.html_script_10.js:298: WARNING - Property detail never defined on event of type Event
    let detail = event.detail;
                 ^^^^^^^^^^^^

/polymer.html_script_10.js:308: WARNING - Property _setPendingPropertyOrPath never defined on inst of type Object
      if (inst._setPendingPropertyOrPath(toPath, value, true, Boolean(fromPath))
          ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

/polymer.html_script_10.js:310: WARNING - Property _invalidateProperties never defined on inst of type Object
        inst._invalidateProperties();
        ^^^^^^^^^^^^^^^^^^^^^^^^^^

/polymer.html_script_10.js:330: WARNING - Property sanitizeDOMValue never defined on Polymer of type Polymer<|function({is:string}):HTMLElement|>{prototype:?}
      value = Polymer.sanitizeDOMValue(value, info.attrName, 'attribute', inst);
              ^^^^^^^^^^^^^^^^^^^^^^^^

/polymer.html_script_10.js:332: WARNING - Property _propertyToAttribute never defined on inst of type {__data:Object}
    inst._propertyToAttribute(property, info.attrName, value);
    ^^^^^^^^^^^^^^^^^^^^^^^^^

/polymer.html_script_10.js:352: WARNING - Property __computeEffects never defined on inst of type Element
    let computeEffects = inst.__computeEffects;
                         ^^^^^^^^^^^^^^^^^^^^^

/polymer.html_script_10.js:356: WARNING - Invalid type for parameter 1 of function Object.assign.
Expected : Object
Found    : Object|null
More details:
The found type is a union that includes an unexpected type: null
        Object.assign(oldProps, inst.__dataOld);
                      ^^^^^^^^

/polymer.html_script_10.js:356: WARNING - Property __dataOld never defined on inst of type Element
        Object.assign(oldProps, inst.__dataOld);
                                ^^^^^^^^^^^^^^

/polymer.html_script_10.js:357: WARNING - Invalid type for parameter 1 of function Object.assign.
Expected : Object
Found    : Object|null
More details:
The found type is a union that includes an unexpected type: null
        Object.assign(changedProps, inst.__dataPending);
                      ^^^^^^^^^^^^

/polymer.html_script_10.js:444: WARNING - Property negate never defined on $jscomp$destructuring$var0 of type {event:?}
      let {event, negate} = binding.parts[0];
                  ^^^^^^

/polymer.html_script_10.js:470: WARNING - Property target never defined on binding of type {kind:string}
      if (binding.kind === 'attribute' && binding.target[0] === '-') {
                                          ^^^^^^^^^^^^^^

/polymer.html_script_10.js:471: WARNING - Property target never defined on binding of type {kind:string}
        console.warn('Cannot set attribute ' + binding.target +
                                               ^^^^^^^^^^^^^^

/polymer.html_script_10.js:474: WARNING - Property dependencies never defined on part of type Object
        let dependencies = part.dependencies;
                           ^^^^^^^^^^^^^^^^^

/polymer.html_script_10.js:512: WARNING - Property binding never defined on info of type {index:number}
    let binding = info.binding;
                  ^^^^^^^^^^^^

/polymer.html_script_10.js:513: WARNING - Property part never defined on info of type {index:number}
    let part = info.part;
               ^^^^^^^^^

/polymer.html_script_10.js:522: WARNING - Property _enqueueClient never defined on inst of type Element
        inst._enqueueClient(node);
        ^^^^^^^^^^^^^^^^^^^

/polymer.html_script_10.js:525: WARNING - Property evaluator never defined on info of type {index:number}
      let value = info.evaluator._evaluateBinding(inst, part, path, props, oldProps, hasPaths);
                  ^^^^^^^^^^^^^^

/polymer.html_script_10.js:545: WARNING - Property sanitizeDOMValue never defined on Polymer of type Polymer<|function({is:string}):HTMLElement|>{prototype:?}
      value = Polymer.sanitizeDOMValue(value, binding.target, binding.kind, node);
              ^^^^^^^^^^^^^^^^^^^^^^^^

/polymer.html_script_10.js:545: WARNING - Property kind never defined on binding of type {target:?}
      value = Polymer.sanitizeDOMValue(value, binding.target, binding.kind, node);
                                                              ^^^^^^^^^^^^

/polymer.html_script_10.js:549: WARNING - Property target never defined on binding of type {kind:?}
      inst._valueToNodeAttribute(node, value, binding.target);
                                              ^^^^^^^^^^^^^^

/polymer.html_script_10.js:552: WARNING - Property target never defined on binding of type {kind:?}
      let prop = binding.target;
                 ^^^^^^^^^^^^^^

/polymer.html_script_10.js:582: WARNING - Property kind never defined on binding of type Object
    if (binding.kind !== 'attribute') {
        ^^^^^^^^^^^^

/polymer.html_script_10.js:584: WARNING - Property target never defined on binding of type Object
      if (binding.target === 'textContent' ||
          ^^^^^^^^^^^^^^

/polymer.html_script_10.js:585: WARNING - Property target never defined on binding of type Object
          (node.localName == 'input' && binding.target == 'value')) {
                                        ^^^^^^^^^^^^^^

/polymer.html_script_10.js:623: WARNING - Property nodeInfoList never defined on $jscomp$destructuring$var1 of type {nodeList:?}
    let {nodeList, nodeInfoList} = templateInfo;
                   ^^^^^^^^^^^^

/polymer.html_script_10.js:710: WARNING - Property methodName never defined on sig of type Object
    let dynamicFn = sig.static || dynamicFns && dynamicFns[sig.methodName];
                                                           ^^^^^^^^^^^^^^

/polymer.html_script_10.js:712: WARNING - Property methodName never defined on sig of type Object
      methodName: sig.methodName,
                  ^^^^^^^^^^^^^^

/polymer.html_script_10.js:713: WARNING - Property args never defined on sig of type Object
      args: sig.args,
            ^^^^^^^^

/polymer.html_script_10.js:717: WARNING - Property args never defined on sig of type Object
    for (let i=0, arg; (i<sig.args.length) && (arg=sig.args[i]); i++) {
                          ^^^^^^^^

/polymer.html_script_10.js:717: WARNING - Property args never defined on sig of type Object
    for (let i=0, arg; (i<sig.args.length) && (arg=sig.args[i]); i++) {
                                                   ^^^^^^^^

/polymer.html_script_10.js:725: WARNING - Property methodName never defined on sig of type Object
      model._addPropertyEffect(sig.methodName, type, {
                               ^^^^^^^^^^^^^^

/polymer.html_script_10.js:753: WARNING - Property __data never defined on inst of type Object
      let args = marshalArgs(inst.__data, info.args, property, props);
                             ^^^^^^^^^^^

/polymer.html_script_10.js:753: WARNING - Property args never defined on info of type {methodName:?}
      let args = marshalArgs(inst.__data, info.args, property, props);
                                          ^^^^^^^^^

/polymer.html_script_10.js:923: WARNING - Property value never defined on arg of type {literal:truthy, name:?}
        v = arg.value;
            ^^^^^^^^^

/polymer.html_script_10.js:967: WARNING - Property notifyPath never defined on inst of type Element
    inst.notifyPath(splicesPath, { indexSplices: splices });
    ^^^^^^^^^^^^^^^

/polymer.html_script_10.js:968: WARNING - Property notifyPath never defined on inst of type Element
    inst.notifyPath(path + '.length', array.length);
    ^^^^^^^^^^^^^^^

/polymer.html_script_10.js:970: WARNING - Property __data never defined on inst of type Element
    inst.__data[splicesPath] = {indexSplices: null};
    ^^^^^^^^^^^

/polymer.html_script_10.js:1049: WARNING - propertyEffectsBase extends non-object type ?.

    const propertyEffectsBase = Polymer.TemplateStamp(Polymer.PropertyAccessors(superClass));
                                ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

/polymer.html_script_10.js:1089: WARNING - Invalid type for parameter 1 of function Object.create.
Expected : Object|null
Found    : *

        this.__data = Object.create(props);
                                    ^^^^^

/polymer.html_script_10.js:1090: WARNING - Invalid type for parameter 1 of function Object.create.
Expected : Object|null
Found    : *

        this.__dataPending = Object.create(props);
                                           ^^^^^

/polymer.html_script_10.js:1101: WARNING - Property __readOnly never defined on this of type PropertyEffects
        let readOnly = this.__readOnly;
                       ^^^^^^^^^^^^^^^

/polymer.html_script_10.js:1102: WARNING - For/in expects an object, found type *.
        for (let prop in props) {
                         ^^^^^

/polymer.html_script_10.js:1106: WARNING - Cannot access property [prop] of non-object type *.
            this.__data[prop] = this.__dataPending[prop] = props[prop];
                                                           ^^^^^

/polymer.html_script_10.js:1367: WARNING - Missing return statement. Function expected to return boolean.
      _setPendingProperty(property, value, shouldNotify) {
      ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

/polymer.html_script_10.js:1529: WARNING - Invalid type for parameter 1 of function runComputedEffects.
Expected : Element|null
Found    : PropertyEffects{__dataHasPaths:boolean}

        runComputedEffects(this, changedProps, oldProps, hasPaths);
                           ^^^^

/polymer.html_script_10.js:1529: WARNING - Invalid type for parameter 2 of function runComputedEffects.
Expected : Object|null
Found    : *

        runComputedEffects(this, changedProps, oldProps, hasPaths);
                                 ^^^^^^^^^^^^

/polymer.html_script_10.js:1529: WARNING - Invalid type for parameter 3 of function runComputedEffects.
Expected : Object|null
Found    : *

        runComputedEffects(this, changedProps, oldProps, hasPaths);
                                               ^^^^^^^^

/polymer.html_script_10.js:1531: WARNING - Invalid type for parameter 1 of function computeLinkedPaths.
Expected : Element|null
Found    : PropertyEffects{__dataHasPaths:boolean}

        computeLinkedPaths(this, changedProps, hasPaths);
                           ^^^^

/polymer.html_script_10.js:1531: WARNING - Invalid type for parameter 2 of function computeLinkedPaths.
Expected : Object|null
Found    : *

        computeLinkedPaths(this, changedProps, hasPaths);
                                 ^^^^^^^^^^^^

/polymer.html_script_10.js:1537: WARNING - Invalid type for parameter 1 of function this._propagatePropertyChanges.
Expected : Object|null
Found    : *

        this._propagatePropertyChanges(changedProps, oldProps, hasPaths);
                                       ^^^^^^^^^^^^

/polymer.html_script_10.js:1537: WARNING - Invalid type for parameter 2 of function this._propagatePropertyChanges.
Expected : Object|null
Found    : *

        this._propagatePropertyChanges(changedProps, oldProps, hasPaths);
                                                     ^^^^^^^^

/polymer.html_script_10.js:1541: WARNING - Property __reflectEffects never defined on this of type PropertyEffects{__dataHasPaths:boolean, __dataToNotify:null}
        runEffects(this, this.__reflectEffects, changedProps, oldProps, hasPaths);
                         ^^^^^^^^^^^^^^^^^^^^^

/polymer.html_script_10.js:1541: WARNING - Invalid type for parameter 3 of function runEffects.
Expected : Object|null
Found    : *

        runEffects(this, this.__reflectEffects, changedProps, oldProps, hasPaths);
                                                ^^^^^^^^^^^^

/polymer.html_script_10.js:1541: WARNING - Invalid type for parameter 4 of function runEffects.
Expected : Object|null|undefined
Found    : *

        runEffects(this, this.__reflectEffects, changedProps, oldProps, hasPaths);
                                                              ^^^^^^^^

/polymer.html_script_10.js:1543: WARNING - Property __observeEffects never defined on this of type PropertyEffects{__dataHasPaths:boolean, __dataToNotify:null}
        runEffects(this, this.__observeEffects, changedProps, oldProps, hasPaths);
                         ^^^^^^^^^^^^^^^^^^^^^

/polymer.html_script_10.js:1543: WARNING - Invalid type for parameter 3 of function runEffects.
Expected : Object|null
Found    : *

        runEffects(this, this.__observeEffects, changedProps, oldProps, hasPaths);
                                                ^^^^^^^^^^^^

/polymer.html_script_10.js:1543: WARNING - Invalid type for parameter 4 of function runEffects.
Expected : Object|null|undefined
Found    : *

        runEffects(this, this.__observeEffects, changedProps, oldProps, hasPaths);
                                                              ^^^^^^^^

/polymer.html_script_10.js:1546: WARNING - Invalid type for parameter 1 of function runNotifyEffects.
Expected : Element|null
Found    : PropertyEffects{__dataHasPaths:boolean, __dataToNotify:null}

          runNotifyEffects(this, notifyProps, changedProps, oldProps, hasPaths);
                           ^^^^

/polymer.html_script_10.js:1546: WARNING - Invalid type for parameter 3 of function runNotifyEffects.
Expected : Object|null
Found    : *

          runNotifyEffects(this, notifyProps, changedProps, oldProps, hasPaths);
                                              ^^^^^^^^^^^^

/polymer.html_script_10.js:1546: WARNING - Invalid type for parameter 4 of function runNotifyEffects.
Expected : Object|null
Found    : *

          runNotifyEffects(this, notifyProps, changedProps, oldProps, hasPaths);
                                                            ^^^^^^^^

/polymer.html_script_10.js:1549: WARNING - Property __dataCounter never defined on this of type PropertyEffects{__dataHasPaths:boolean, __dataToNotify:null}
        if (this.__dataCounter == 1) {
            ^^^^^^^^^^^^^^^^^^

/polymer.html_script_10.js:1641: WARNING - Invalid type for parameter 1 of function notifySplices.
Expected : Element|null
Found    : PropertyEffects

        notifySplices(this, array, info.path, splices);
                      ^^^^

/polymer.html_script_10.js:1641: WARNING - Property path never defined on info of type Object{}
        notifySplices(this, array, info.path, splices);
                                   ^^^^^^^^^

/polymer.html_script_10.js:1719: WARNING - Invalid type for parameter 1 of function notifySplice.
Expected : Element|null
Found    : PropertyEffects

          notifySplice(this, array, info.path, len, items.length, []);
                       ^^^^

/polymer.html_script_10.js:1719: WARNING - Property path never defined on info of type Object{}
          notifySplice(this, array, info.path, len, items.length, []);
                                    ^^^^^^^^^

/polymer.html_script_10.js:1743: WARNING - Invalid type for parameter 1 of function notifySplice.
Expected : Element|null
Found    : PropertyEffects

          notifySplice(this, array, info.path, array.length, 0, [ret]);
                       ^^^^

/polymer.html_script_10.js:1743: WARNING - Property path never defined on info of type Object{}
          notifySplice(this, array, info.path, array.length, 0, [ret]);
                                    ^^^^^^^^^

/polymer.html_script_10.js:1779: WARNING - Invalid type for parameter 1 of function notifySplice.
Expected : Element|null
Found    : PropertyEffects

          notifySplice(this, array, info.path, start, items.length, ret);
                       ^^^^

/polymer.html_script_10.js:1779: WARNING - Property path never defined on info of type Object{}
          notifySplice(this, array, info.path, start, items.length, ret);
                                    ^^^^^^^^^

/polymer.html_script_10.js:1803: WARNING - Invalid type for parameter 1 of function notifySplice.
Expected : Element|null
Found    : PropertyEffects

          notifySplice(this, array, info.path, 0, 0, [ret]);
                       ^^^^

/polymer.html_script_10.js:1803: WARNING - Property path never defined on info of type Object{}
          notifySplice(this, array, info.path, 0, 0, [ret]);
                                    ^^^^^^^^^

/polymer.html_script_10.js:1827: WARNING - Invalid type for parameter 1 of function notifySplice.
Expected : Element|null
Found    : PropertyEffects

          notifySplice(this, array, info.path, 0, items.length, []);
                       ^^^^

/polymer.html_script_10.js:1827: WARNING - Property path never defined on info of type Object{}
          notifySplice(this, array, info.path, 0, items.length, []);
                                    ^^^^^^^^^

/polymer.html_script_10.js:1851: WARNING - Property path never defined on info of type Object{}
          propPath = info.path;
                     ^^^^^^^^^

/polymer.html_script_10.js:1882: WARNING - Dangerous use of the global THIS object
            this._setProperty(property, value);
            ^^^^

/polymer.html_script_10.js:2080: WARNING - Property nodeList never defined on dom of type DocumentFragment
        templateInfo.nodeList = dom.nodeList;
                                ^^^^^^^^^^^^

/polymer.html_script_10.js:2093: WARNING - Property propertyEffects never defined on templateInfo of type {childNodes:Array<?>=, nodeList:?, wasPreBound:truthy=}
          runEffects(this, templateInfo.propertyEffects, this.__data, null,
                           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^

/polymer.html_script_10.js:2109: WARNING - Property templateInfo never defined on dom of type DocumentFragment
        let templateInfo = dom.templateInfo;
                           ^^^^^^^^^^^^^^^^

/polymer.html_script_10.js:2143: WARNING - Property _parseTemplateNode never defined on propertyEffectsBase of type propertyEffectsBase<|function(new:propertyEffectsBase):?|>
        let noted = super._parseTemplateNode(node, templateInfo, nodeInfo);
                    ^^^^^^^^^^^^^^^^^^^^^^^^

/polymer.html_script_10.js:2151: WARNING - Function addBinding: called with 6 argument(s). Function requires at least 7 argument(s) and at most 7.
            addBinding(this, templateInfo, nodeInfo, 'text', 'textContent', parts);
            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

/polymer.html_script_10.js:2187: WARNING - Property setAttribute never defined on node of type Node
            node.setAttribute(name, literal);
            ^^^^^^^^^^^^^^^^^

/polymer.html_script_10.js:2194: WARNING - Property setAttribute never defined on node of type Node
            node.setAttribute(origName, '');
            ^^^^^^^^^^^^^^^^^

/polymer.html_script_10.js:2197: WARNING - Property removeAttribute never defined on node of type Node
          node.removeAttribute(origName);
          ^^^^^^^^^^^^^^^^^^^^

/polymer.html_script_10.js:2208: WARNING - Property _parseTemplateNodeAttribute never defined on propertyEffectsBase of type propertyEffectsBase<|function(new:propertyEffectsBase):?|>
          return super._parseTemplateNodeAttribute(node, templateInfo, nodeInfo, name, value);
                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

/polymer.html_script_10.js:2226: WARNING - Property _parseTemplateNestedTemplate never defined on propertyEffectsBase of type propertyEffectsBase<|function(new:propertyEffectsBase):?|>
        let noted = super._parseTemplateNestedTemplate(node, templateInfo, nodeInfo);
                    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

/polymer.html_script_10.js:2232: WARNING - Function addBinding: called with 6 argument(s). Function requires at least 7 argument(s) and at most 7.
          addBinding(this, templateInfo, nodeInfo, 'property', '_host_' + source, parts);
          ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

/polymer.html_script_10.js:2270: WARNING - Missing return statement. Function expected to return Array<Object|null>|null.
      static _parseBindings(text, templateInfo) {
      ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

/polymer.html_script_10.js:2299: WARNING - Property args never defined on $jscomp$destructuring$var2 of type Object
            let {args, methodName} = signature;
                 ^^^^

/polymer.html_script_10.js:2299: WARNING - Property methodName never defined on $jscomp$destructuring$var2 of type Object
            let {args, methodName} = signature;
                       ^^^^^^^^^^

/polymer.html_script_10.js:2352: WARNING - Property source never defined on part of type Object
        } else if (path != part.source) {
                           ^^^^^^^^^^^

/polymer.html_script_10.js:2353: WARNING - Property source never defined on part of type Object
          value = Polymer.Path.get(inst, part.source);
                                         ^^^^^^^^^^^

/polymer.html_script_10.js:2358: WARNING - Property __data never defined on inst of type HTMLElement
            value = inst.__data[path];
                    ^^^^^^^^^^^

/polymer.html_script_11.js:105: WARNING - polymerElementBase extends non-object type ?.

    const polymerElementBase = Polymer.PropertyEffects(base);
                               ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

/polymer.html_script_11.js:126: WARNING - Property properties never defined on klass of type HTMLElement
          klass.properties : {};
          ^^^^^^^^^^^^^^^^

/polymer.html_script_11.js:144: WARNING - Property observers never defined on klass of type HTMLElement
          klass.observers : [];
          ^^^^^^^^^^^^^^^

/polymer.html_script_11.js:155: WARNING - Type annotation references non-existent type Objecg.
     * @return {Objecg} The input `flattenedProps` bag
                ^^^^^^

/polymer.html_script_11.js:184: WARNING - Property prototype never defined on klass of type HTMLElement{__classProperties:?}
        let superCtor = Object.getPrototypeOf(klass.prototype).constructor;
                                              ^^^^^^^^^^^^^^^

/polymer.html_script_11.js:187: WARNING - Invalid type for parameter 1 of function propertiesForClass.
Expected : HTMLElement|null
Found    : Function

            Object.create(propertiesForClass(superCtor)),
                                             ^^^^^^^^^

/polymer.html_script_11.js:241: WARNING - Property prototype never defined on klass of type HTMLElement
      let proto = klass.prototype;
                  ^^^^^^^^^^^^^^^

/polymer.html_script_11.js:260: WARNING - Property prototype never defined on klass of type HTMLElement{__finalized:boolean}
      let proto = klass.prototype;
                  ^^^^^^^^^^^^^^^

/polymer.html_script_11.js:274: WARNING - Property template never defined on klass of type HTMLElement{__finalized:boolean, is:truthy=}
      let template = klass.template;
                     ^^^^^^^^^^^^^^

/polymer.html_script_11.js:318: WARNING - Property _createMethodObserver never defined on proto of type HTMLElement
        proto._createMethodObserver(observers[i], dynamicFns);
        ^^^^^^^^^^^^^^^^^^^^^^^^^^^

/polymer.html_script_11.js:390: WARNING - Property _hasReadOnlyEffect never defined on proto of type HTMLElement
      if (info.computed  && !proto._hasReadOnlyEffect(name)) {
                             ^^^^^^^^^^^^^^^^^^^^^^^^

/polymer.html_script_11.js:391: WARNING - Property _createComputedProperty never defined on proto of type HTMLElement
        proto._createComputedProperty(name, info.computed, allProps);
        ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

/polymer.html_script_11.js:393: WARNING - Property _hasReadOnlyEffect never defined on proto of type HTMLElement
      if (info.readOnly && !proto._hasReadOnlyEffect(name)) {
                            ^^^^^^^^^^^^^^^^^^^^^^^^

/polymer.html_script_11.js:394: WARNING - Property _createReadOnlyProperty never defined on proto of type HTMLElement
        proto._createReadOnlyProperty(name, !info.computed);
        ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

/polymer.html_script_11.js:396: WARNING - Property _hasReflectEffect never defined on proto of type HTMLElement
      if (info.reflectToAttribute && !proto._hasReflectEffect(name)) {
                                      ^^^^^^^^^^^^^^^^^^^^^^^

/polymer.html_script_11.js:397: WARNING - Property _createReflectedProperty never defined on proto of type HTMLElement
        proto._createReflectedProperty(name);
        ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

/polymer.html_script_11.js:399: WARNING - Property _hasNotifyEffect never defined on proto of type HTMLElement
      if (info.notify && !proto._hasNotifyEffect(name)) {
                          ^^^^^^^^^^^^^^^^^^^^^^

/polymer.html_script_11.js:400: WARNING - Property _createNotifyingProperty never defined on proto of type HTMLElement
        proto._createNotifyingProperty(name);
        ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

/polymer.html_script_11.js:404: WARNING - Property _createPropertyObserver never defined on proto of type HTMLElement
        proto._createPropertyObserver(name, info.observer, allProps[info.observer]);
        ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

/polymer.html_script_11.js:433: WARNING - Invalid type for parameter 1 of function window.ShadyCSS.prepareTemplate.
Expected : HTMLTemplateElement
Found    : HTMLTemplateElement|null
More details:
The found type is a union that includes an unexpected type: null
        window.ShadyCSS.prepareTemplate(template, is, ext);
                                        ^^^^^^^^

/polymer.html_script_11.js:435: WARNING - Property _bindTemplate never defined on proto of type HTMLElement
      proto._bindTemplate(template);
      ^^^^^^^^^^^^^^^^^^^

/polymer.html_script_11.js:458: WARNING - Invalid type for parameter 1 of function propertiesForClass.
Expected : HTMLElement|null
Found    : PolymerElement

          let properties = propertiesForClass(this);
                                              ^^^^

/polymer.html_script_11.js:524: WARNING - Property is never defined on this of type PolymerElement
          this._template = Polymer.DomModule.import(this.is, 'template') ||
                                                    ^^^^^^^

/polymer.html_script_11.js:528: WARNING - Property prototype never defined on this of type PolymerElement
            Object.getPrototypeOf(this.prototype).constructor.template;
                                  ^^^^^^^^^^^^^^

/polymer.html_script_11.js:546: WARNING - Property is never defined on this of type PolymerElement
            const module = Polymer.DomModule.import(this.is);
                                                    ^^^^^^^

/polymer.html_script_11.js:548: WARNING - Property prototype never defined on this of type PolymerElement
            Object.getPrototypeOf(this.prototype).constructor.importPath;
                                  ^^^^^^^^^^^^^^

/polymer.html_script_11.js:573: WARNING - Function Polymer.ResolveUrl.resolveUrl: called with 1 argument(s). Function requires at least 2 argument(s) and at most 2.
            importPath ? Polymer.ResolveUrl.resolveUrl(importPath) : '';
                         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

/polymer.html_script_11.js:574: WARNING - Invalid type for parameter 1 of function finalizeTemplate.
Expected : HTMLElement|null
Found    : Object|null
More details:
The found type is a union that includes an unexpected type: Object
          finalizeTemplate(this.__proto__, this._template, baseURI,
                           ^^^^^^^^^^^^^^

/polymer.html_script_11.js:575: WARNING - Property localName never defined on this of type PolymerElement{_template:HTMLTemplateElement{__polymerFinalized:boolean}, constructor:Function}
            this.localName);
            ^^^^^^^^^^^^^^

/polymer.html_script_11.js:582: WARNING - Invalid type for parameter 1 of function propertyDefaultsForClass.
Expected : HTMLElement|null
Found    : Function

        let p$ = propertyDefaultsForClass(this.constructor);
                                          ^^^^^^^^^^^^^^^^

/polymer.html_script_11.js:618: WARNING - Invalid type for parameter 1 of function window.ShadyCSS.styleElement.
Expected : HTMLElement
Found    : PolymerElement{_template:truthy}

          window.ShadyCSS.styleElement(this);
                                       ^^^^

/polymer.html_script_11.js:643: WARNING - Property $ never defined on this.root of type DocumentFragment
          this.$ = this.root.$;
                   ^^^^^^^^^^^

/polymer.html_script_11.js:676: WARNING - Missing return statement. Function expected to return Node|null.
      _attachDom(dom) {
      ^^^^^^^^^^^^^^^^^

/polymer.html_script_11.js:719: WARNING - Invalid type for parameter 1 of function propertiesForClass.
Expected : HTMLElement|null
Found    : Function|null
More details:
The found type is a union that includes an unexpected type: Function
          let type = propertiesForClass(this.constructor)[property].type;
                                        ^^^^^^^^^^^^^^^^

/polymer.html_script_11.js:721: WARNING - Invalid type for parameter 1 of function this._attributeToProperty.
Expected : string
Found    : *

            this._attributeToProperty(name, value, type);
                                      ^^^^

/polymer.html_script_11.js:721: WARNING - Invalid type for parameter 2 of function this._attributeToProperty.
Expected : string
Found    : *

            this._attributeToProperty(name, value, type);
                                            ^^^^^

/polymer.html_script_11.js:744: WARNING - Invalid type for parameter 1 of function window.ShadyCSS.styleSubtree.
Expected : HTMLElement
Found    : PolymerElement

          window.ShadyCSS.styleSubtree(this, properties);
                                       ^^^^

/polymer.html_script_11.js:761: WARNING - Function Polymer.ResolveUrl.resolveUrl: called with 1 argument(s). Function requires at least 2 argument(s) and at most 2.
          base = Polymer.ResolveUrl.resolveUrl(this.importPath);
                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

/polymer.html_script_11.js:776: WARNING - Property _parseTemplateContent never defined on polymerElementBase of type polymerElementBase<|function(new:polymerElementBase):?|>
        return super._parseTemplateContent(template, templateInfo, nodeInfo);
               ^^^^^^^^^^^^^^^^^^^^^^^^^^^

/polymer.html_script_11.js:812: WARNING - Dangerous use of the global THIS object
      if (this.stack.length) {
          ^^^^

/polymer.html_script_11.js:813: WARNING - Dangerous use of the global THIS object
        let host = this.stack[this.stack.length-1];
                   ^^^^

/polymer.html_script_11.js:813: WARNING - Dangerous use of the global THIS object
        let host = this.stack[this.stack.length-1];
                              ^^^^

/polymer.html_script_11.js:819: WARNING - Dangerous use of the global THIS object
      this.stack.push(inst);
      ^^^^

/polymer.html_script_11.js:823: WARNING - Dangerous use of the global THIS object
      let stackLen = this.stack.length;
                     ^^^^

/polymer.html_script_11.js:824: WARNING - Dangerous use of the global THIS object
      if (stackLen && this.stack[stackLen-1] == inst) {
                      ^^^^

/polymer.html_script_11.js:825: WARNING - Dangerous use of the global THIS object
        this.stack.pop();
        ^^^^

/polymer.html_script_11.js:847: WARNING - Type annotation references non-existent type Polymer.Element.
     * @type {Array<Polymer.Element>}
                    ^^^^^^^^^^^^^^^

/polymer.html_script_11.js:855: WARNING - Property is never defined on prototype of type HTMLElement
      console.log('[' + prototype.is + ']: registered')
                        ^^^^^^^^^^^^

/polymer.html_script_11.js:863: WARNING - Dangerous use of the global THIS object
      this.registrations.push(prototype);
      ^^^^

/polymer.html_script_11.js:864: WARNING - Dangerous use of the global THIS object
      Polymer.log && this._regLog(prototype);
                     ^^^^

/polymer.html_script_11.js:871: WARNING - Dangerous use of the global THIS object
      this.registrations.forEach(this._regLog);
      ^^^^

/polymer.html_script_11.js:871: WARNING - Dangerous use of the global THIS object
      this.registrations.forEach(this._regLog);
                                 ^^^^

/polymer.html_script_12.js:60: WARNING - Type annotation references non-existent type Polymer.Debouncer.
   * @param {Polymer.Debouncer?} debouncer Debouncer object.
             ^^^^^^^^^^^^^^^^^

/polymer.html_script_13.js:246: WARNING - Returned type does not match declared return type.
Expected : HTMLElement|null
Found    : Element|null
More details:
The found type is a union that includes an unexpected type: Element
      return node;
      ^^^^^^^^^^^^

/polymer.html_script_13.js:258: WARNING - Returned type does not match declared return type.
Expected : HTMLElement|null
Found    : Document|Element|ShadowRoot|Window
More details:
The found type is a union that includes an unexpected type: Window
        return ev.composedPath()[0];
        ^^^^^^^^^^^^^^^^^^^^^^^^^^^^

/polymer.html_script_13.js:261: WARNING - Returned type does not match declared return type.
Expected : HTMLElement|null
Found    : EventTarget|null
More details:
The found type is a union that includes an unexpected type: EventTarget
      return ev.target;
      ^^^^^^^^^^^^^^^^^

/polymer.html_script_13.js:283: WARNING - Property changedTouches never defined on ev of type Event
          let t = ev.changedTouches[0];
                  ^^^^^^^^^^^^^^^^^

/polymer.html_script_13.js:286: WARNING - Property touches never defined on ev of type Event
            if (ev.touches.length === 1) {
                ^^^^^^^^^^

/polymer.html_script_13.js:330: WARNING - Property changedTouches never defined on ev of type Event
      let t = ev.changedTouches[0];
              ^^^^^^^^^^^^^^^^^

/polymer.html_script_13.js:371: WARNING - Missing return statement. Function expected to return boolean.
    addListener: function(node, evType, handler) {
                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

/polymer.html_script_13.js:372: WARNING - Dangerous use of the global THIS object
      if (this.gestures[evType]) {
          ^^^^

/polymer.html_script_13.js:373: WARNING - Dangerous use of the global THIS object
        this._add(node, evType, handler);
        ^^^^

/polymer.html_script_13.js:388: WARNING - Missing return statement. Function expected to return boolean.
    removeListener: function(node, evType, handler) {
                    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

/polymer.html_script_13.js:389: WARNING - Dangerous use of the global THIS object
      if (this.gestures[evType]) {
          ^^^^

/polymer.html_script_13.js:390: WARNING - Dangerous use of the global THIS object
        this._remove(node, evType, handler);
        ^^^^

/polymer.html_script_13.js:401: WARNING - Bad type annotation. missing opening ( See https://github.com/google/closure-compiler/wiki/Bad-Type-Annotation for more information.
     * @param {function} handler Event handler function.
                       ^

/polymer.html_script_13.js:404: WARNING - Dangerous use of the global THIS object
      let recognizer = this.gestures[evType];
                       ^^^^

/polymer.html_script_13.js:422: WARNING - Dangerous use of the global THIS object
          node.addEventListener(dep, this._handleNative);
                                     ^^^^

/polymer.html_script_13.js:429: WARNING - Dangerous use of the global THIS object
        this.setTouchAction(node, recognizer.touchAction);
        ^^^^

/polymer.html_script_13.js:439: WARNING - Bad type annotation. missing opening ( See https://github.com/google/closure-compiler/wiki/Bad-Type-Annotation for more information.
     * @param {function} handler Event handler function.
                       ^

/polymer.html_script_13.js:442: WARNING - Dangerous use of the global THIS object
      let recognizer = this.gestures[evType];
                       ^^^^

/polymer.html_script_13.js:454: WARNING - Dangerous use of the global THIS object
              node.removeEventListener(dep, this._handleNative);
                                            ^^^^

/polymer.html_script_13.js:470: WARNING - Dangerous use of the global THIS object
      this.recognizers.push(recog);
      ^^^^

/polymer.html_script_13.js:472: WARNING - Dangerous use of the global THIS object
        this.gestures[recog.emits[i]] = recog;
        ^^^^

/polymer.html_script_13.js:482: WARNING - Dangerous use of the global THIS object
      for (let i = 0, r; i < this.recognizers.length; i++) {
                             ^^^^

/polymer.html_script_13.js:483: WARNING - Dangerous use of the global THIS object
        r = this.recognizers[i];
            ^^^^

/polymer.html_script_13.js:506: WARNING - Property style never defined on node of type Node
        node.style.touchAction = value;
        ^^^^^^^^^^

/polymer.html_script_13.js:539: WARNING - Dangerous use of the global THIS object
      let recognizer = this._findRecognizerByEvent(evName);
                       ^^^^

/polymer.html_script_13.js:576: WARNING - Dangerous use of the global THIS object
      untrackDocument(this.info);
                      ^^^^

/polymer.html_script_13.js:597: WARNING - Dangerous use of the global THIS object
      trackDocument(this.info, movefn, upfn);
                    ^^^^

/polymer.html_script_13.js:598: WARNING - Dangerous use of the global THIS object
      this._fire('down', t, e);
      ^^^^

/polymer.html_script_13.js:601: WARNING - Dangerous use of the global THIS object
      this._fire('down', Gestures._findOriginalTarget(e), e.changedTouches[0], e);
      ^^^^

/polymer.html_script_13.js:604: WARNING - Dangerous use of the global THIS object
      this._fire('up', Gestures._findOriginalTarget(e), e.changedTouches[0], e);
      ^^^^

/polymer.html_script_13.js:636: WARNING - Dangerous use of the global THIS object
        if (this.moves.length > TRACK_LENGTH) {
            ^^^^

/polymer.html_script_13.js:637: WARNING - Dangerous use of the global THIS object
          this.moves.shift();
          ^^^^

/polymer.html_script_13.js:639: WARNING - Dangerous use of the global THIS object
        this.moves.push(move);
        ^^^^

/polymer.html_script_13.js:647: WARNING - Dangerous use of the global THIS object
      this.info.state = 'start';
      ^^^^

/polymer.html_script_13.js:648: WARNING - Dangerous use of the global THIS object
      this.info.started = false;
      ^^^^

/polymer.html_script_13.js:649: WARNING - Dangerous use of the global THIS object
      this.info.moves = [];
      ^^^^

/polymer.html_script_13.js:650: WARNING - Dangerous use of the global THIS object
      this.info.x = 0;
      ^^^^

/polymer.html_script_13.js:651: WARNING - Dangerous use of the global THIS object
      this.info.y = 0;
      ^^^^

/polymer.html_script_13.js:652: WARNING - Dangerous use of the global THIS object
      this.info.prevent = false;
      ^^^^

/polymer.html_script_13.js:653: WARNING - Dangerous use of the global THIS object
      untrackDocument(this.info);
                      ^^^^

/polymer.html_script_13.js:657: WARNING - Dangerous use of the global THIS object
      if (this.info.prevent) {
          ^^^^

/polymer.html_script_13.js:660: WARNING - Dangerous use of the global THIS object
      if (this.info.started) {
          ^^^^

/polymer.html_script_13.js:663: WARNING - Dangerous use of the global THIS object
      let dx = Math.abs(this.info.x - x);
                        ^^^^

/polymer.html_script_13.js:664: WARNING - Dangerous use of the global THIS object
      let dy = Math.abs(this.info.y - y);
                        ^^^^

/polymer.html_script_13.js:702: WARNING - Dangerous use of the global THIS object
      trackDocument(this.info, movefn, upfn);
                    ^^^^

/polymer.html_script_13.js:703: WARNING - Dangerous use of the global THIS object
      this.info.x = e.clientX;
      ^^^^

/polymer.html_script_13.js:704: WARNING - Dangerous use of the global THIS object
      this.info.y = e.clientY;
      ^^^^

/polymer.html_script_13.js:709: WARNING - Dangerous use of the global THIS object
      this.info.x = ct.clientX;
      ^^^^

/polymer.html_script_13.js:710: WARNING - Dangerous use of the global THIS object
      this.info.y = ct.clientY;
      ^^^^

/polymer.html_script_13.js:717: WARNING - Dangerous use of the global THIS object
      if (this.hasMovedEnough(x, y)) {
          ^^^^

/polymer.html_script_13.js:718: WARNING - Dangerous use of the global THIS object
        if (this.info.state === 'start') {
            ^^^^

/polymer.html_script_13.js:722: WARNING - Dangerous use of the global THIS object
        this.info.addMove({x: x, y: y});
        ^^^^

/polymer.html_script_13.js:723: WARNING - Dangerous use of the global THIS object
        this._fire(t, ct);
        ^^^^

/polymer.html_script_13.js:724: WARNING - Dangerous use of the global THIS object
        this.info.state = 'track';
        ^^^^

/polymer.html_script_13.js:725: WARNING - Dangerous use of the global THIS object
        this.info.started = true;
        ^^^^

/polymer.html_script_13.js:733: WARNING - Dangerous use of the global THIS object
      if (this.info.started) {
          ^^^^

/polymer.html_script_13.js:735: WARNING - Dangerous use of the global THIS object
        this.info.state = 'end';
        ^^^^

/polymer.html_script_13.js:736: WARNING - Dangerous use of the global THIS object
        this.info.addMove({x: ct.clientX, y: ct.clientY});
        ^^^^

/polymer.html_script_13.js:737: WARNING - Dangerous use of the global THIS object
        this._fire(t, ct, e);
        ^^^^

/polymer.html_script_13.js:742: WARNING - Dangerous use of the global THIS object
      let secondlast = this.info.moves[this.info.moves.length - 2];
                       ^^^^

/polymer.html_script_13.js:742: WARNING - Dangerous use of the global THIS object
      let secondlast = this.info.moves[this.info.moves.length - 2];
                                       ^^^^

/polymer.html_script_13.js:743: WARNING - Dangerous use of the global THIS object
      let lastmove = this.info.moves[this.info.moves.length - 1];
                     ^^^^

/polymer.html_script_13.js:743: WARNING - Dangerous use of the global THIS object
      let lastmove = this.info.moves[this.info.moves.length - 1];
                                     ^^^^

/polymer.html_script_13.js:744: WARNING - Dangerous use of the global THIS object
      let dx = lastmove.x - this.info.x;
                            ^^^^

/polymer.html_script_13.js:745: WARNING - Dangerous use of the global THIS object
      let dy = lastmove.y - this.info.y;
                            ^^^^

/polymer.html_script_13.js:752: WARNING - Dangerous use of the global THIS object
        state: this.info.state,
               ^^^^

/polymer.html_script_13.js:782: WARNING - Dangerous use of the global THIS object
      this.info.x = NaN;
      ^^^^

/polymer.html_script_13.js:783: WARNING - Dangerous use of the global THIS object
      this.info.y = NaN;
      ^^^^

/polymer.html_script_13.js:784: WARNING - Dangerous use of the global THIS object
      this.info.prevent = false;
      ^^^^

/polymer.html_script_13.js:787: WARNING - Dangerous use of the global THIS object
      this.info.x = e.clientX;
      ^^^^

/polymer.html_script_13.js:788: WARNING - Dangerous use of the global THIS object
      this.info.y = e.clientY;
      ^^^^

/polymer.html_script_13.js:793: WARNING - Dangerous use of the global THIS object
        this.save(e);
        ^^^^

/polymer.html_script_13.js:798: WARNING - Dangerous use of the global THIS object
        this.forward(e);
        ^^^^

/polymer.html_script_13.js:803: WARNING - Dangerous use of the global THIS object
      this.save(e.changedTouches[0], e);
      ^^^^

/polymer.html_script_13.js:806: WARNING - Dangerous use of the global THIS object
      this.forward(e.changedTouches[0], e);
      ^^^^

/polymer.html_script_13.js:810: WARNING - Dangerous use of the global THIS object
      let dx = Math.abs(e.clientX - this.info.x);
                                    ^^^^

/polymer.html_script_13.js:811: WARNING - Dangerous use of the global THIS object
      let dy = Math.abs(e.clientY - this.info.y);
                                    ^^^^

/polymer.html_script_13.js:816: WARNING - Dangerous use of the global THIS object
        if (!this.info.prevent) {
             ^^^^

/polymer.html_script_14.js:6: WARNING - All constants must be typed. The compiler could not infer the type of constant gestures. Please use an explicit type annotation. For more information, see:
https://github.com/google/closure-compiler/wiki/Using-NTI-(new-type-inference)#warnings-about-uninferred-constants
  const gestures = Polymer.Gestures;
        ^^^^^^^^^^^^^^^^^^^^^^^^^^^

/polymer.html_script_14.js:28: WARNING - GestureEventListeners extends non-object type ?.

    class GestureEventListeners extends superClass {
    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

/polymer.html_script_15.js:91: WARNING - Returned type does not match declared return type.
Expected : HTMLLinkElement|null
Found    : Element{__dynamicImportLoaded:truthy=, href:string=, parentNode:Node|null, rel:string=}

    return link;
    ^^^^^^^^^^^^

/polymer.html_script_18.js:51: WARNING - Dangerous use of the global THIS object
          if (this.equals(current[currentStart + j - 1], old[oldStart + i - 1]))
              ^^^^

/polymer.html_script_18.js:166: WARNING - Dangerous use of the global THIS object
        prefixCount = this.sharedPrefix(current, old, minLength);
                      ^^^^

/polymer.html_script_18.js:169: WARNING - Dangerous use of the global THIS object
        suffixCount = this.sharedSuffix(current, old, minLength - prefixCount);
                      ^^^^

/polymer.html_script_18.js:188: WARNING - Dangerous use of the global THIS object
      let ops = this.spliceOperationsFromEditDistances(
                ^^^^

/polymer.html_script_18.js:189: WARNING - Dangerous use of the global THIS object
          this.calcEditDistances(current, currentStart, currentEnd,
          ^^^^

/polymer.html_script_18.js:242: WARNING - Dangerous use of the global THIS object
        if (!this.equals(current[i], old[i]))
             ^^^^

/polymer.html_script_18.js:251: WARNING - Dangerous use of the global THIS object
      while (count < searchLength && this.equals(current[--index1], old[--index2]))
                                     ^^^^

/polymer.html_script_18.js:258: WARNING - Dangerous use of the global THIS object
      return this.calcSplices(current, 0, current.length, previous, 0,
             ^^^^

/polymer.html_script_19.js:36: WARNING - Misplaced function annotation. This JSDoc is not attached to a function node. Are you missing parentheses?
  class FlattenedNodesObserver {
  ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

/polymer.html_script_19.js:51: WARNING - Invalid type for parameter 1 of function isSlot.
Expected : {localName:?} (loose)
Found    : Node|null
More details:
The found type is a union that includes an unexpected type: null
      if (isSlot(node)) {
                 ^^^^

/polymer.html_script_19.js:52: WARNING - Property assignedNodes never defined on node of type Node
        return node.assignedNodes({flatten: true});
               ^^^^^^^^^^^^^^^^^^

/polymer.html_script_19.js:166: WARNING - Returned type does not match declared return type.
Expected : boolean
Found    : undefined

        return;
        ^^^^^^^

/polymer.html_script_21.js:6: WARNING - All constants must be typed. The compiler could not infer the type of constant normalizedMatchesSelector. Please use an explicit type annotation. For more information, see:
https://github.com/google/closure-compiler/wiki/Using-NTI-(new-type-inference)#warnings-about-uninferred-constants
  const normalizedMatchesSelector = p.matches || p.matchesSelector ||
        ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

/polymer.html_script_21.js:140: WARNING - Type annotation references non-existent type type.
     * @return {type} Description
                ^^^^

/polymer.html_script_21.js:181: WARNING - Dangerous use of the global THIS object
        return this.node[method].apply(this.node, arguments);
               ^^^^

/polymer.html_script_21.js:181: WARNING - Dangerous use of the global THIS object
        return this.node[method].apply(this.node, arguments);
                                       ^^^^

/polymer.html_script_21.js:191: WARNING - Dangerous use of the global THIS object
          return this.node[name];
                 ^^^^

/polymer.html_script_21.js:203: WARNING - Dangerous use of the global THIS object
          return this.node[name];
                 ^^^^

/polymer.html_script_21.js:206: WARNING - Dangerous use of the global THIS object
          this.node[name] = value;
          ^^^^

/polymer.html_script_21.js:320: WARNING - Property polyfillWrapFlushCallback never defined on window.customElements of type CustomElementRegistry
    !(window.customElements.polyfillWrapFlushCallback);
      ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

/polymer.html_script_22.js:30: WARNING - legacyElementBase extends non-object type ?.

    const legacyElementBase = Polymer.GestureEventListeners(Polymer.ElementMixin(base));
                              ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

/polymer.html_script_22.js:45: WARNING - Cannot implement non-interface ?
     * @implements {Polymer_LegacyElement}
                    ^

/polymer.html_script_22.js:45: WARNING - Type annotation references non-existent type Polymer_LegacyElement.
     * @implements {Polymer_LegacyElement}
                    ^^^^^^^^^^^^^^^^^^^^^

/polymer.html_script_22.js:63: WARNING - Cannot add property isAttached to a struct instance after it is constructed.
        this.isAttached = true;
        ^^^^^^^^^^^^^^^

/polymer.html_script_22.js:75: WARNING - Cannot add property isAttached to a struct instance after it is constructed.
        this.isAttached = false;
        ^^^^^^^^^^^^^^^

/polymer.html_script_22.js:88: WARNING - Function this.attributeChanged: called with 3 argument(s). Function requires at least 0 argument(s) and at most 0.
          this.attributeChanged(name, old, value);
          ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

/polymer.html_script_22.js:172: WARNING - Returned type does not match declared return type.
Expected : string
Found    : string|undefined
More details:
The found type is a union that includes an unexpected type: undefined
        return this._serializeValue(value);
        ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

/polymer.html_script_22.js:217: WARNING - Invalid type for parameter 1 of function this._valueToNodeAttribute.
Expected : Element|null
Found    : Element|LegacyElement
More details:
The found type is a union that includes an unexpected type: LegacyElement
        this._valueToNodeAttribute(node || this, value, attribute);
                                   ^^^^^^^^^^^^

/polymer.html_script_22.js:314: WARNING - Property cancelable never defined on options of type {bubbles:boolean|undefined}
          cancelable: Boolean(options.cancelable),
                              ^^^^^^^^^^^^^^^^^^

/polymer.html_script_22.js:332: WARNING - The right side in the assignment is not a subtype of the left side.
Expected : Element|null
Found    : Element|LegacyElement
More details:
The found type is a union that includes an unexpected type: LegacyElement
        node = node || this;
        ^^^^^^^^^^^^^^^^^^^

/polymer.html_script_22.js:334: WARNING - Cannot add property __boundListeners to a struct instance after it is constructed.
          (this.__boundListeners = new WeakMap());
           ^^^^^^^^^^^^^^^^^^^^^

/polymer.html_script_22.js:357: WARNING - The right side in the assignment is not a subtype of the left side.
Expected : Element|null
Found    : Element|LegacyElement
More details:
The found type is a union that includes an unexpected type: LegacyElement
        node = node || this;
        ^^^^^^^^^^^^^^^^^^^

/polymer.html_script_22.js:404: WARNING - Property getRootNode never defined on this of type LegacyElement
        let root = this.getRootNode();
                   ^^^^^^^^^^^^^^^^

/polymer.html_script_22.js:405: WARNING - Property host never defined on root of type DocumentFragment
        return (root instanceof DocumentFragment) ? root.host : root;
                                                    ^^^^^^^^^

/polymer.html_script_22.js:418: WARNING - Property forceRender never defined on any type in the program
          this.shadowRoot.forceRender();
          ^^^^^^^^^^^^^^^^^^^^^^^^^^^

/polymer.html_script_22.js:431: WARNING - Property getEffectiveChildNodes may not be present on DomApi|EventApi.
        return Polymer.dom(this).getEffectiveChildNodes();
               ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

/polymer.html_script_22.js:431: WARNING - Invalid type for parameter 1 of function Polymer.dom.
Expected : Event|Node|null
Found    : LegacyElement

        return Polymer.dom(this).getEffectiveChildNodes();
                           ^^^^

/polymer.html_script_22.js:442: WARNING - Property queryDistributedElements may not be present on DomApi|EventApi.
        return Polymer.dom(this).queryDistributedElements(selector);
               ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

/polymer.html_script_22.js:442: WARNING - Invalid type for parameter 1 of function Polymer.dom.
Expected : Event|Node|null
Found    : LegacyElement

        return Polymer.dom(this).queryDistributedElements(selector);
                           ^^^^

/polymer.html_script_22.js:455: WARNING - Invalid type for parameter 1 of function list.filter.
Expected : function(this:?,Node|null,number,Array<Node|null>):?|null
Found    : function({nodeType:?} (loose)):boolean

        return list.filter(function(n) {
                           ^^^^^^^^^^^^^

/polymer.html_script_22.js:513: WARNING - Property getDistributedNodes may not be present on DomApi|EventApi.
        return content ? Polymer.dom(content).getDistributedNodes() : [];
                         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

/polymer.html_script_22.js:543: WARNING - Cannot perform strict equality / inequality comparisons on incompatible types:
left : LegacyElement
right: Node|null
        return this !== node && this.contains(node) &&
               ^^^^

/polymer.html_script_22.js:543: WARNING - Property contains never defined on this of type LegacyElement
        return this !== node && this.contains(node) &&
                                ^^^^^^^^^^^^^

/polymer.html_script_22.js:544: WARNING - Property getRootNode never defined on this of type LegacyElement
            this.getRootNode() === node.getRootNode();
            ^^^^^^^^^^^^^^^^

/polymer.html_script_22.js:598: WARNING - Cannot add property _debouncers to a struct instance after it is constructed.
        this._debouncers = this._debouncers || {};
        ^^^^^^^^^^^^^^^^

/polymer.html_script_22.js:612: WARNING - Cannot add property _debouncers to a struct instance after it is constructed.
        this._debouncers = this._debouncers || {};
        ^^^^^^^^^^^^^^^^

/polymer.html_script_22.js:623: WARNING - Cannot add property _debouncers to a struct instance after it is constructed.
        this._debouncers = this._debouncers || {};
        ^^^^^^^^^^^^^^^^

/polymer.html_script_22.js:636: WARNING - Cannot add property _debouncers to a struct instance after it is constructed.
        this._debouncers = this._debouncers || {}
        ^^^^^^^^^^^^^^^^

/polymer.html_script_22.js:657: WARNING - Invalid type(s) for operator BITNOT.
Expected : number
Found    : *

            ~Polymer.Async.microTask.run(callback.bind(this));
             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

/polymer.html_script_22.js:727: WARNING - Invalid type for parameter 1 of function Polymer.dom.matchesSelector.
Expected : Node|null
Found    : Element|LegacyElement
More details:
The found type is a union that includes an unexpected type: LegacyElement
        return Polymer.dom.matchesSelector(node || this, selector);
                                           ^^^^^^^^^^^^

/polymer.html_script_22.js:739: WARNING - The right side in the assignment is not a subtype of the left side.
Expected : HTMLElement|null|undefined
Found    : HTMLElement|LegacyElement
More details:
The found type is a union that includes an unexpected type: LegacyElement
        node = node || this;
        ^^^^^^^^^^^^^^^^^^^

/polymer.html_script_22.js:760: WARNING - The right side in the assignment is not a subtype of the left side.
Expected : HTMLElement|null|undefined
Found    : HTMLElement|LegacyElement
More details:
The found type is a union that includes an unexpected type: LegacyElement
        node = node || this;
        ^^^^^^^^^^^^^^^^^^^

/polymer.html_script_22.js:779: WARNING - The right side in the assignment is not a subtype of the left side.
Expected : HTMLElement|null|undefined
Found    : HTMLElement|LegacyElement
More details:
The found type is a union that includes an unexpected type: LegacyElement
        node = node || this;
        ^^^^^^^^^^^^^^^^^^^

/polymer.html_script_22.js:795: WARNING - The right side in the assignment is not a subtype of the left side.
Expected : HTMLElement|null|undefined
Found    : HTMLElement|LegacyElement
More details:
The found type is a union that includes an unexpected type: LegacyElement
        node = node || this;
        ^^^^^^^^^^^^^^^^^^^

/polymer.html_script_22.js:825: WARNING - Function this.splice: called with 3 argument(s). Function requires at least 4 argument(s) and at most 4.
            return this.splice(arrayOrPath, index, 1);
                   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

/polymer.html_script_22.js:857: WARNING - parameter var_args does not appear in LegacyElement.prototype._log's parameter list
      _log(...args) {
      ^^^^^^^^^^^^^^^

/polymer.html_script_22.js:866: WARNING - parameter var_args does not appear in LegacyElement.prototype._warn's parameter list
      _warn(...args) {
      ^^^^^^^^^^^^^^^^

/polymer.html_script_22.js:875: WARNING - parameter var_args does not appear in LegacyElement.prototype._error's parameter list
      _error(...args) {
      ^^^^^^^^^^^^^^^^^

/polymer.html_script_22.js:887: WARNING - parameter methodName does not appear in LegacyElement.prototype._logf's parameter list
      _logf(...args) {
      ^^^^^^^^^^^^^^^^

/polymer.html_script_22.js:887: WARNING - parameter var_args does not appear in LegacyElement.prototype._logf's parameter list
      _logf(...args) {
      ^^^^^^^^^^^^^^^^

/polymer.html_script_22.js:888: WARNING - Returned type does not match declared return type.
Expected : string
Found    : Array<?>

        return ['[%s::%s]', this.is, ...args];
        ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

/polymer.html_script_22.js:888: WARNING - Property is never defined on this of type LegacyElement
        return ['[%s::%s]', this.is, ...args];
                            ^^^^^^^

/polymer.html_script_23.js:49: WARNING - Invalid type for parameter 1 of function _mixinBehaviors.
Expected : {length:?} (loose)
Found    : Array<?>|null
More details:
The found type is a union that includes an unexpected type: null
      klass = _mixinBehaviors(behaviors, klass);
                              ^^^^^^^^^

/polymer.html_script_23.js:141: WARNING - Property is never defined on this of type PolymerGenerated
            Polymer.DomModule.import(this.is, 'template') ||
                                     ^^^^^^^

/polymer.html_script_23.js:146: WARNING - Property prototype never defined on this of type PolymerGenerated
            this.prototype._template;
            ^^^^^^^^^^^^^^

/polymer.html_script_23.js:177: WARNING - Property _addMethodEventListenerToNode never defined on this of type PolymerGenerated
              this._addMethodEventListenerToNode(this, l, info.listeners[l]);
              ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

/polymer.html_script_23.js:188: WARNING - Property _ensureAttribute never defined on this of type PolymerGenerated
              this._ensureAttribute(a, info.hostAttributes[a]);
              ^^^^^^^^^^^^^^^^^^^^^

/polymer.html_script_23.js:304: WARNING - Type annotation references non-existent type Polymer.LegacyElement.
     * @return {Polymer.LegacyElement} Generated class
                ^^^^^^^^^^^^^^^^^^^^^

/polymer.html_script_23.js:313: WARNING - Invalid type for parameter 2 of function mixinBehaviors.
Expected : HTMLElement|null
Found    : HTMLElement<|function(new:HTMLElement):?|>

        mixinBehaviors(info.behaviors, HTMLElement) :
                                       ^^^^^^^^^^^

/polymer.html_script_23.js:316: WARNING - Property is never defined on info of type Object
      klass.is = info.is;
                 ^^^^^^^

/polymer.html_script_24.js:19: WARNING - Type annotation references non-existent type Polymer.LegacyElement.
     * @return {Polymer.LegacyElement} Generated class
                ^^^^^^^^^^^^^^^^^^^^^

/polymer.html_script_24.js:21: WARNING - Found two declarations for property _polymerFn on window.Polymer.

    window.Polymer._polymerFn = function(info) {
    ^^^^^^^^^^^^^^^^^^^^^^^^^

/polymer.html_script_25.js:67: WARNING - MutableData extends non-object type ?.

    class MutableData extends superClass {
    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

/polymer.html_script_25.js:138: WARNING - OptionalMutableData extends non-object type ?.

    class OptionalMutableData extends superClass {
    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

/polymer.html_script_25.js:170: WARNING - Property mutableData never defined on this of type OptionalMutableData
        return mutablePropertyChange(this, property, value, old, this.mutableData);
                                                                 ^^^^^^^^^^^^^^^^

/polymer.html_script_26.js:17: WARNING - All constants must be typed. The compiler could not infer the type of constant DataTemplate. Please use an explicit type annotation. For more information, see:
https://github.com/google/closure-compiler/wiki/Using-NTI-(new-type-inference)#warnings-about-uninferred-constants
    const DataTemplate = Polymer.PropertyEffects(HTMLTemplateElementExtension);
          ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

/polymer.html_script_26.js:18: WARNING - All constants must be typed. The compiler could not infer the type of constant MutableDataTemplate. Please use an explicit type annotation. For more information, see:
https://github.com/google/closure-compiler/wiki/Using-NTI-(new-type-inference)#warnings-about-uninferred-constants
    const MutableDataTemplate = Polymer.MutableData(DataTemplate);
          ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

/polymer.html_script_26.js:38: WARNING - Property __dataHost never defined on this of type TemplateInstanceBase
        this.root = this._stampTemplate(this.__dataHost);
                                        ^^^^^^^^^^^^^^^

/polymer.html_script_26.js:45: WARNING - Property __templatizeOwner never defined on this of type TemplateInstanceBase{children:Array<?>, root:DocumentFragment}
        if (this.__templatizeOwner.__hideTemplateChildren__) {
            ^^^^^^^^^^^^^^^^^^^^^^

/polymer.html_script_26.js:50: WARNING - Property __templatizeOptions never defined on this of type TemplateInstanceBase{children:Array<?>, root:DocumentFragment}
        let options = this.__templatizeOptions;
                      ^^^^^^^^^^^^^^^^^^^^^^^^

/polymer.html_script_26.js:62: WARNING - Property __templatizeOptions never defined on this of type TemplateInstanceBase
        let options = this.__templatizeOptions;
                      ^^^^^^^^^^^^^^^^^^^^^^^^

/polymer.html_script_26.js:66: WARNING - Function this._setPendingProperty: called with 2 argument(s). Function requires at least 3 argument(s) and at most 3.
              this._setPendingProperty(iprop, props[iprop]);
              ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

/polymer.html_script_26.js:70: WARNING - Property __hostProps never defined on this of type TemplateInstanceBase
        for (let hprop in this.__hostProps) {
                          ^^^^^^^^^^^^^^^^

/polymer.html_script_26.js:71: WARNING - Function this._setPendingProperty: called with 2 argument(s). Function requires at least 3 argument(s) and at most 3.
          this._setPendingProperty(hprop, this.__dataHost['_host_' + hprop]);
          ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

/polymer.html_script_26.js:71: WARNING - Property __dataHost never defined on this of type TemplateInstanceBase
          this._setPendingProperty(hprop, this.__dataHost['_host_' + hprop]);
                                          ^^^^^^^^^^^^^^^

/polymer.html_script_26.js:86: WARNING - Property __dataHost never defined on this of type TemplateInstanceBase
          this.__dataHost._enqueueClient(this);
          ^^^^^^^^^^^^^^^

/polymer.html_script_26.js:93: WARNING - Property __templatizeOptions never defined on this of type TemplateInstanceBase{_methodHost:truthy}
        if (this._methodHost && this.__templatizeOptions.parentModel) {
                                ^^^^^^^^^^^^^^^^^^^^^^^^

/polymer.html_script_26.js:103: WARNING - Property __dataHost never defined on this of type TemplateInstanceBase{_methodHost:truthy=}
          let templateHost = this.__dataHost.__dataHost;
                             ^^^^^^^^^^^^^^^

/polymer.html_script_26.js:165: WARNING - Type annotation references non-existent type Polymer.PropertyEffectsInterface.
       * @return {Polymer.PropertyEffectsInterface} The parent model of this instance
                  ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

/polymer.html_script_26.js:168: WARNING - Property __parentModel never defined on this of type TemplateInstanceBase
        let model = this.__parentModel;
                    ^^^^^^^^^^^^^^^^^^

/polymer.html_script_26.js:175: WARNING - Property __dataHost never defined on model of type TemplateInstanceBase
            model = model.__dataHost.__dataHost;
                    ^^^^^^^^^^^^^^^^

/polymer.html_script_26.js:177: WARNING - Cannot add property __parentModel to a struct instance after it is constructed.
          this.__parentModel = model;
          ^^^^^^^^^^^^^^^^^^

/polymer.html_script_26.js:183: WARNING - All constants must be typed. The compiler could not infer the type of constant MutableTemplateInstanceBase. Please use an explicit type annotation. For more information, see:
https://github.com/google/closure-compiler/wiki/Using-NTI-(new-type-inference)#warnings-about-uninferred-constants
    const MutableTemplateInstanceBase = Polymer.MutableData(TemplateInstanceBase);
          ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

/polymer.html_script_26.js:204: WARNING - Property _bindTemplate never defined on klass.prototype of type klass.prototype
      klass.prototype._bindTemplate(template);
      ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

/polymer.html_script_26.js:222: WARNING - Property _addPropertyEffect never defined on klass.prototype of type $polymer_html_script_26$classdecl$var1.prototype
            klass.prototype._addPropertyEffect('_host_' + prop,
            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

/polymer.html_script_26.js:223: WARNING - Property PROPERTY_EFFECT_TYPES never defined on klass.prototype of type $polymer_html_script_26$classdecl$var1.prototype
              klass.prototype.PROPERTY_EFFECT_TYPES.PROPAGATE,
              ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

/polymer.html_script_26.js:225: WARNING - Property _createNotifyingProperty never defined on klass.prototype of type $polymer_html_script_26$classdecl$var1.prototype
            klass.prototype._createNotifyingProperty('_host_' + prop);
            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

/polymer.html_script_26.js:391: WARNING - Cannot access property constructor of non-object type *.
        let templateInfo = owner.constructor._parseTemplate(template);
                           ^^^^^

/polymer.html_script_26.js:396: WARNING - Invalid type for parameter 3 of function createTemplatizerClass.
Expected : Object
Found    : *

          baseClass = createTemplatizerClass(template, templateInfo, options);
                                                                     ^^^^^^^

/polymer.html_script_26.js:400: WARNING - Invalid type for parameter 3 of function addPropagateEffects.
Expected : {forwardHostProp:?} (loose)
Found    : *

        addPropagateEffects(template, templateInfo, options);
                                                    ^^^^^^^

/polymer.html_script_26.js:407: WARNING - Returned type does not match declared return type.
Expected : TemplateInstanceBase|null
Found    : $polymer_html_script_26$classdecl$var2<|function(new:$polymer_html_script_26$classdecl$var2,...?):undefined|>{prototype:$polymer_html_script_26$classdecl$var2.prototype}

        return klass;
        ^^^^^^^^^^^^^

/polymer.html_script_26.js:448: WARNING - The right side in the assignment is not a subtype of the left side.
Expected : HTMLElement|null
Found    : Node|null
More details:
The found type is a union that includes an unexpected type: Node
            el = el.parentNode;
            ^^^^^^^^^^^^^^^^^^

/polymer.html_script_27.js:80: WARNING - Dangerous use of the global THIS object
        this._templatizerTemplate = template;
        ^^^^

/polymer.html_script_27.js:81: WARNING - Dangerous use of the global THIS object
        this.ctor = Polymer.Templatize.templatize(template, this, {
        ^^^^

/polymer.html_script_27.js:83: WARNING - Dangerous use of the global THIS object
          parentModel: this._parentModel,
                       ^^^^

/polymer.html_script_27.js:83: WARNING - Property _parentModel never defined on any type in the program
          parentModel: this._parentModel,
                       ^^^^^^^^^^^^^^^^^

/polymer.html_script_27.js:84: WARNING - Dangerous use of the global THIS object
          instanceProps: this._instanceProps,
                         ^^^^

/polymer.html_script_27.js:84: WARNING - Property _instanceProps never defined on any type in the program
          instanceProps: this._instanceProps,
                         ^^^^^^^^^^^^^^^^^^^

/polymer.html_script_27.js:85: WARNING - Dangerous use of the global THIS object
          forwardHostProp: this._forwardHostPropV2,
                           ^^^^

/polymer.html_script_27.js:85: WARNING - Property _forwardHostPropV2 never defined on any type in the program
          forwardHostProp: this._forwardHostPropV2,
                           ^^^^^^^^^^^^^^^^^^^^^^^

/polymer.html_script_27.js:86: WARNING - Dangerous use of the global THIS object
          notifyInstanceProp: this._notifyInstancePropV2
                              ^^^^

/polymer.html_script_27.js:86: WARNING - Property _notifyInstancePropV2 never defined on any type in the program
          notifyInstanceProp: this._notifyInstancePropV2
                              ^^^^^^^^^^^^^^^^^^^^^^^^^^

/polymer.html_script_27.js:99: WARNING - Type annotation references non-existent type TemplateInstanceBase.
       * @return {TemplateInstanceBase} Returns the created instance of
                  ^^^^^^^^^^^^^^^^^^^^

/polymer.html_script_27.js:103: WARNING - Dangerous use of the global THIS object
        return new this.ctor(model);
                   ^^^^

/polymer.html_script_27.js:113: WARNING - Type annotation references non-existent type TemplateInstanceBase.
       * @return {TemplateInstanceBase} Model representing the binding scope for
                  ^^^^^^^^^^^^^^^^^^^^

/polymer.html_script_27.js:117: WARNING - Dangerous use of the global THIS object
        return Polymer.Templatize.modelForElement(this._templatizerTemplate, el);
                                                  ^^^^

/polymer.html_script_28.js:10: WARNING - Cannot implement non-interface ?
     * @implements {Polymer_GestureEventListener}
                    ^

/polymer.html_script_28.js:10: WARNING - Type annotation references non-existent type Polymer_GestureEventListener.
     * @implements {Polymer_GestureEventListener}
                    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^

/polymer.html_script_28.js:40: WARNING - Cannot add property mutableData to a struct instance after it is constructed.
        this.mutableData = true;
        ^^^^^^^^^^^^^^^^

/polymer.html_script_28.js:52: WARNING - Property root never defined on this of type DomBind{parentNode:Node}
        this.parentNode.insertBefore(this.root, this);
                                     ^^^^^^^^^

/polymer.html_script_28.js:58: WARNING - Property root never defined on this of type DomBind{__children:{length:number} (loose)}
            this.root.appendChild(this.__children[i]);
            ^^^^^^^^^

/polymer.html_script_28.js:77: WARNING - Function $jscomp$this.render: called with 1 argument(s). Function requires at least 0 argument(s) and at most 0.
                this.render(template);
                ^^^^^^^^^^^^^^^^^^^^^

/polymer.html_script_28.js:85: WARNING - Cannot add property root to a struct instance after it is constructed.
          this.root = this._stampTemplate(template);
          ^^^^^^^^^

/polymer.html_script_28.js:85: WARNING - Property _stampTemplate never defined on this of type DomBind
          this.root = this._stampTemplate(template);
                      ^^^^^^^^^^^^^^^^^^^

/polymer.html_script_28.js:86: WARNING - Cannot add property $ to a struct instance after it is constructed.
          this.$ = this.root.$;
          ^^^^^^

/polymer.html_script_28.js:86: WARNING - Property root never defined on this of type DomBind
          this.$ = this.root.$;
                   ^^^^^^^^^

/polymer.html_script_28.js:87: WARNING - Cannot add property __children to a struct instance after it is constructed.
          this.__children = [];
          ^^^^^^^^^^^^^^^

/polymer.html_script_28.js:88: WARNING - Property root never defined on this of type DomBind
          for (let n=this.root.firstChild; n; n=n.nextSibling) {
                     ^^^^^^^^^

/polymer.html_script_28.js:89: WARNING - Property __children never defined on this of type DomBind
            this.__children[this.__children.length] = n;
            ^^^^^^^^^^^^^^^

/polymer.html_script_28.js:89: WARNING - Property __children never defined on this of type DomBind
            this.__children[this.__children.length] = n;
                            ^^^^^^^^^^^^^^^

/polymer.html_script_28.js:91: WARNING - Property _flushProperties never defined on this of type DomBind
          this._flushProperties();
          ^^^^^^^^^^^^^^^^^^^^^

/polymer.html_script_30.js:274: WARNING - Property disconnectedCallback never defined on domRepeatBase.prototype of type domRepeatBase.prototype
      super.disconnectedCallback();
      ^^^^^^^^^^^^^^^^^^^^^^^^^^^^

/polymer.html_script_30.js:275: WARNING - Cannot add property __isDetached to a struct instance after it is constructed.
      this.__isDetached = true;
      ^^^^^^^^^^^^^^^^^

/polymer.html_script_30.js:282: WARNING - Property connectedCallback never defined on domRepeatBase.prototype of type domRepeatBase.prototype
      super.connectedCallback();
      ^^^^^^^^^^^^^^^^^^^^^^^^^

/polymer.html_script_30.js:286: WARNING - Property parentNode never defined on this of type DomRepeat{__isDetached:boolean}
        let parent = this.parentNode;
                     ^^^^^^^^^^^^^^^

/polymer.html_script_30.js:298: WARNING - Cannot add property template to a struct instance after it is constructed.
        let template = this.template = this.querySelector('template');
                       ^^^^^^^^^^^^^

/polymer.html_script_30.js:298: WARNING - Property querySelector never defined on this of type DomRepeat
        let template = this.template = this.querySelector('template');
                                       ^^^^^^^^^^^^^^^^^^

/polymer.html_script_30.js:302: WARNING - Property querySelector never defined on $jscomp$this of type DomRepeat
            if (this.querySelector('template')) {
                ^^^^^^^^^^^^^^^^^^

/polymer.html_script_30.js:309: WARNING - Invalid type for parameter 1 of function observer.observe.
Expected : Node|null
Found    : DomRepeat

          observer.observe(this, {childList: true});
                           ^^^^

/polymer.html_script_30.js:314: WARNING - Property as never defined on this of type DomRepeat
        instanceProps[this.as] = true;
                      ^^^^^^^

/polymer.html_script_30.js:315: WARNING - Property indexAs never defined on this of type DomRepeat
        instanceProps[this.indexAs] = true;
                      ^^^^^^^^^^^^

/polymer.html_script_30.js:316: WARNING - Property itemsIndexAs never defined on this of type DomRepeat
        instanceProps[this.itemsIndexAs] = true;
                      ^^^^^^^^^^^^^^^^^

/polymer.html_script_30.js:318: WARNING - Property mutableData never defined on this of type DomRepeat
          mutableData: this.mutableData,
                       ^^^^^^^^^^^^^^^^

/polymer.html_script_30.js:322: WARNING - Dangerous use of the global THIS object
            let i$ = this.__instances;
                     ^^^^

/polymer.html_script_30.js:328: WARNING - Dangerous use of the global THIS object
            if (Polymer.Path.matches(this.as, prop)) {
                                     ^^^^

/polymer.html_script_30.js:329: WARNING - Dangerous use of the global THIS object
              let idx = inst[this.itemsIndexAs];
                             ^^^^

/polymer.html_script_30.js:330: WARNING - Dangerous use of the global THIS object
              if (prop == this.as) {
                          ^^^^

/polymer.html_script_30.js:331: WARNING - Dangerous use of the global THIS object
                this.items[idx] = value;
                ^^^^

/polymer.html_script_30.js:333: WARNING - Dangerous use of the global THIS object
              let path = Polymer.Path.translate(this.as, 'items.' + idx, prop);
                                                ^^^^

/polymer.html_script_30.js:334: WARNING - Dangerous use of the global THIS object
              this.notifyPath(path, value);
              ^^^^

/polymer.html_script_30.js:348: WARNING - Property __dataHost never defined on this of type DomRepeat
      return this.__dataHost._methodHost || this.__dataHost;
             ^^^^^^^^^^^^^^^

/polymer.html_script_30.js:357: WARNING - Invalid type for parameter 1 of function this.__debounceRender.
Expected : function():?
Found    : function(this:DomRepeat):?

        this.__debounceRender(this.__render);
                              ^^^^^^^^^^^^^

/polymer.html_script_30.js:367: WARNING - Invalid type for parameter 1 of function this.__debounceRender.
Expected : function():?
Found    : function(this:DomRepeat):?

        this.__debounceRender(this.__render);
                              ^^^^^^^^^^^^^

/polymer.html_script_30.js:387: WARNING - Invalid type for parameter 1 of function this.__debounceRender.
Expected : function():?
Found    : function(this:DomRepeat):?

        this.__debounceRender(this.__requestRenderChunk);
                              ^^^^^^^^^^^^^^^^^^^^^^^^^

/polymer.html_script_30.js:400: WARNING - Property _targetFrameTime never defined on this of type DomRepeat
      let ratio = this._targetFrameTime / (currChunkTime - this.__lastChunkTime);
                  ^^^^^^^^^^^^^^^^^^^^^

/polymer.html_script_30.js:404: WARNING - Invalid type for parameter 1 of function this.__debounceRender.
Expected : function():?
Found    : function(this:DomRepeat):?

      this.__debounceRender(this.__render);
                            ^^^^^^^^^^^^^

/polymer.html_script_30.js:423: WARNING - Invalid type for parameter 1 of function this.__debounceRender.
Expected : function():?
Found    : function(this:DomRepeat):?

        this.__debounceRender(this.__render);
                              ^^^^^^^^^^^^^

/polymer.html_script_30.js:434: WARNING - Invalid type for parameter 1 of function this.__debounceRender.
Expected : function():?
Found    : function(this:DomRepeat):?

            this.__debounceRender(this.__render, this.delay);
                                  ^^^^^^^^^^^^^

/polymer.html_script_30.js:434: WARNING - Property delay never defined on this of type DomRepeat{__needFullRefresh:boolean, __observePaths:truthy}
            this.__debounceRender(this.__render, this.delay);
                                                 ^^^^^^^^^^

/polymer.html_script_30.js:448: WARNING - Invalid type for parameter 1 of function Polymer.Async.timeOut.after.
Expected : number
Found    : number|undefined
More details:
The found type is a union that includes an unexpected type: undefined
          , delay > 0 ? Polymer.Async.timeOut.after(delay) : Polymer.Async.microTask
                                                    ^^^^^

/polymer.html_script_30.js:463: WARNING - Invalid type for parameter 1 of function this.__debounceRender.
Expected : function():?
Found    : function(this:DomRepeat):?

      this.__debounceRender(this.__render);
                            ^^^^^^^^^^^^^

/polymer.html_script_30.js:480: WARNING - Property _setRenderedItemCount never defined on this of type DomRepeat{__pool:{length:number} (loose)}
      this._setRenderedItemCount(this.__instances.length);
      ^^^^^^^^^^^^^^^^^^^^^^^^^^

/polymer.html_script_30.js:482: WARNING - Property dispatchEvent never defined on this of type DomRepeat{__instances:{length:?} (loose), __pool:{length:number} (loose)}
      this.dispatchEvent(new CustomEvent('dom-change', {
      ^^^^^^^^^^^^^^^^^^

/polymer.html_script_30.js:491: WARNING - All constants must be typed. The compiler could not infer the type of constant items. Please use an explicit type annotation. For more information, see:
https://github.com/google/closure-compiler/wiki/Using-NTI-(new-type-inference)#warnings-about-uninferred-constants
      const items = this.items || [];
            ^^^^^^^^^^^^^^^^^^^^^^^^

/polymer.html_script_30.js:516: WARNING - Property as never defined on this of type DomRepeat{__instances:Object, __itemsIdxToInstIdx:Object{}, __limit:number, items:?=}
          inst._setPendingProperty(this.as, item);
                                   ^^^^^^^

/polymer.html_script_30.js:517: WARNING - Property indexAs never defined on this of type DomRepeat{__instances:Object, __itemsIdxToInstIdx:Object{}, __limit:number, items:?=}
          inst._setPendingProperty(this.indexAs, instIdx);
                                   ^^^^^^^^^^^^

/polymer.html_script_30.js:518: WARNING - Property itemsIndexAs never defined on this of type DomRepeat{__instances:Object, __itemsIdxToInstIdx:Object{}, __limit:number, items:?=}
          inst._setPendingProperty(this.itemsIndexAs, itemIdx);
                                   ^^^^^^^^^^^^^^^^^

/polymer.html_script_30.js:554: WARNING - Property as never defined on this of type DomRepeat
      model[this.as] = item;
            ^^^^^^^

/polymer.html_script_30.js:555: WARNING - Property indexAs never defined on this of type DomRepeat
      model[this.indexAs] = instIdx;
            ^^^^^^^^^^^^

/polymer.html_script_30.js:556: WARNING - Property itemsIndexAs never defined on this of type DomRepeat
      model[this.itemsIndexAs] = itemIdx;
            ^^^^^^^^^^^^^^^^^

/polymer.html_script_30.js:565: WARNING - Property as never defined on this of type DomRepeat{__pool:{pop:LOOSE_TOP_FUNCTION} (loose)}
        inst._setPendingProperty(this.as, item);
                                 ^^^^^^^

/polymer.html_script_30.js:566: WARNING - Property indexAs never defined on this of type DomRepeat{__pool:{pop:LOOSE_TOP_FUNCTION} (loose)}
        inst._setPendingProperty(this.indexAs, instIdx);
                                 ^^^^^^^^^^^^

/polymer.html_script_30.js:567: WARNING - Property itemsIndexAs never defined on this of type DomRepeat{__pool:{pop:LOOSE_TOP_FUNCTION} (loose)}
        inst._setPendingProperty(this.itemsIndexAs, itemIdx);
                                 ^^^^^^^^^^^^^^^^^

/polymer.html_script_30.js:574: WARNING - Property parentNode never defined on this of type DomRepeat{__instances:Object, __pool:{pop:LOOSE_TOP_FUNCTION} (loose)}
      this.parentNode.insertBefore(inst.root, beforeNode);
      ^^^^^^^^^^^^^^^

/polymer.html_script_30.js:601: WARNING - Property as never defined on this of type DomRepeat{__instances:Object, __itemsIdxToInstIdx:Object}
            let itemPath = this.as + (itemSubPath ? '.' + itemSubPath : '');
                           ^^^^^^^

/polymer.html_script_30.js:625: WARNING - Property as never defined on this of type DomRepeat
      return instance && instance[this.as];
                                  ^^^^^^^

/polymer.html_script_30.js:639: WARNING - Property indexAs never defined on this of type DomRepeat
      return instance && instance[this.indexAs];
                                  ^^^^^^^^^^^^

/polymer.html_script_30.js:656: WARNING - Type annotation references non-existent type TemplateInstanceBase.
     * @return {TemplateInstanceBase} Model representing the binding scope for
                ^^^^^^^^^^^^^^^^^^^^

/polymer.html_script_30.js:660: WARNING - Property template never defined on this of type DomRepeat
      return Polymer.Templatize.modelForElement(this.template, el);
                                                ^^^^^^^^^^^^^

/polymer.html_script_30.js:665: WARNING - Invalid type for parameter 2 of function customElements.define.
Expected : function(new:HTMLElement):?
Found    : DomRepeat<|function(new:DomRepeat):undefined|>

  customElements.define(DomRepeat.is, DomRepeat);
                                      ^^^^^^^^^

/polymer.html_script_31.js:142: WARNING - Property _lastIf never defined on this of type DomIf{__instance:?, if:?=, restamp:?=}
      if (this.if != this._lastIf) {
                     ^^^^^^^^^^^^

/polymer.html_script_31.js:143: WARNING - Property dispatchEvent never defined on this of type DomIf{__instance:?, if:?=, restamp:?=}
        this.dispatchEvent(new CustomEvent('dom-change', {
        ^^^^^^^^^^^^^^^^^^

/polymer.html_script_31.js:147: WARNING - Cannot add property _lastIf to a struct instance after it is constructed.
        this._lastIf = this.if;
        ^^^^^^^^^^^^

/polymer.html_script_31.js:152: WARNING - Property parentNode never defined on this of type DomIf
      let parentNode = this.parentNode;
                       ^^^^^^^^^^^^^^^

/polymer.html_script_31.js:156: WARNING - Property querySelector never defined on this of type DomIf
          let template = this.querySelector('template');
                         ^^^^^^^^^^^^^^^^^^

/polymer.html_script_31.js:160: WARNING - Property querySelector never defined on $jscomp$this of type DomIf
              if (this.querySelector('template')) {
                  ^^^^^^^^^^^^^^^^^^

/polymer.html_script_31.js:167: WARNING - Invalid type for parameter 1 of function observer.observe.
Expected : Node|null
Found    : DomIf

            observer.observe(this, {childList: true});
                             ^^^^

/polymer.html_script_31.js:170: WARNING - Cannot add property __ctor to a struct instance after it is constructed.
          this.__ctor = Polymer.Templatize.templatize(template, this, {
          ^^^^^^^^^^^

/polymer.html_script_31.js:175: WARNING - Dangerous use of the global THIS object
              if (this.__instance) {
                  ^^^^

/polymer.html_script_31.js:176: WARNING - Dangerous use of the global THIS object
                if (this.if) {
                    ^^^^

/polymer.html_script_31.js:177: WARNING - Dangerous use of the global THIS object
                  this.__instance.forwardHostProp(prop, value);
                  ^^^^

/polymer.html_script_31.js:183: WARNING - Dangerous use of the global THIS object
                  this.__invalidProps = this.__invalidProps || Object.create(null);
                  ^^^^

/polymer.html_script_31.js:183: WARNING - Dangerous use of the global THIS object
                  this.__invalidProps = this.__invalidProps || Object.create(null);
                                        ^^^^

/polymer.html_script_31.js:184: WARNING - Dangerous use of the global THIS object
                  this.__invalidProps[Polymer.Path.root(prop)] = true;
                  ^^^^

/polymer.html_script_31.js:198: WARNING - Property previousSibling never defined on this of type DomIf{__ctor:truthy=, __instance:{children:?} (loose)}
            let lastChild = this.previousSibling;
                            ^^^^^^^^^^^^^^^^^^^^

/polymer.html_script_31.js:214: WARNING - Property __dataHost never defined on this of type DomIf{__instance:{_setPendingProperty:LOOSE_TOP_FUNCTION} (loose)}
          this.__instance._setPendingProperty(prop, this.__dataHost[prop]);
                                                    ^^^^^^^^^^^^^^^

/polymer.html_script_31.js:237: WARNING - Property if never defined on this of type DomIf
      let hidden = this.__hideTemplateChildren__ || !this.if;
                                                     ^^^^^^^

/polymer.html_script_31.js:245: WARNING - Invalid type for parameter 2 of function customElements.define.
Expected : function(new:HTMLElement):?
Found    : DomIf<|function(new:DomIf):undefined|>

  customElements.define(DomIf.is, DomIf);
                                  ^^^^^

/polymer.html_script_32.js:86: WARNING - ArraySelectorMixin extends non-object type ?.

      constructor() {
      ^^^^^^^^^^^^^^^

/polymer.html_script_32.js:143: WARNING - Property items never defined on this of type ArraySelectorMixin
            if (selected.has(this.items[idx])) {
                             ^^^^^^^^^^

/polymer.html_script_32.js:144: WARNING - Property items never defined on this of type ArraySelectorMixin
              selected.set(this.items[idx], idx);
                           ^^^^^^^^^^

/polymer.html_script_32.js:155: WARNING - Property splice never defined on $jscomp$this of type ArraySelectorMixin{multi:truthy}
              this.splice('selected', sidx, 1);
              ^^^^^^^^^^^

/polymer.html_script_32.js:157: WARNING - Cannot add property selected to a struct instance after it is constructed.
              this.selected = this.selectedItem = null;
              ^^^^^^^^^^^^^

/polymer.html_script_32.js:157: WARNING - Cannot add property selectedItem to a struct instance after it is constructed.
              this.selected = this.selectedItem = null;
                              ^^^^^^^^^^^^^^^^^

/polymer.html_script_32.js:167: WARNING - Cannot add property __dataLinkedPaths to a struct instance after it is constructed.
        this.__dataLinkedPaths = {};
        ^^^^^^^^^^^^^^^^^^^^^^

/polymer.html_script_32.js:172: WARNING - Property linkPaths never defined on $jscomp$this of type ArraySelectorMixin
              this.linkPaths('items.' + idx, 'selected.' + sidx++);
              ^^^^^^^^^^^^^^

/polymer.html_script_32.js:177: WARNING - Property linkPaths never defined on $jscomp$this of type ArraySelectorMixin
            this.linkPaths('selected', 'items.' + idx);
            ^^^^^^^^^^^^^^

/polymer.html_script_32.js:178: WARNING - Property linkPaths never defined on $jscomp$this of type ArraySelectorMixin
            this.linkPaths('selectedItem', 'items.' + idx);
            ^^^^^^^^^^^^^^

/polymer.html_script_32.js:189: WARNING - Cannot add property __dataLinkedPaths to a struct instance after it is constructed.
        this.__dataLinkedPaths = {};
        ^^^^^^^^^^^^^^^^^^^^^^

/polymer.html_script_32.js:196: WARNING - Cannot add property selected to a struct instance after it is constructed.
        this.selected = this.multi ? [] : null
        ^^^^^^^^^^^^^

/polymer.html_script_32.js:197: WARNING - Cannot add property selectedItem to a struct instance after it is constructed.
        this.selectedItem = null;
        ^^^^^^^^^^^^^^^^^

/polymer.html_script_32.js:217: WARNING - Property items never defined on this of type ArraySelectorMixin
        return this.isSelected(this.items[idx]);
                               ^^^^^^^^^^

/polymer.html_script_32.js:233: WARNING - Property __dataLinkedPaths never defined on this of type ArraySelectorMixin
        let selected = this.__dataLinkedPaths['items.' + idx];
                       ^^^^^^^^^^^^^^^^^^^^^^

/polymer.html_script_32.js:254: WARNING - Property splice never defined on this
            this.splice('selected', sidx, 1);
            ^^^^^^^^^^^

/polymer.html_script_32.js:256: WARNING - Cannot add property selected to a struct instance after it is constructed.
            this.selected = this.selectedItem = null;
            ^^^^^^^^^^^^^

/polymer.html_script_32.js:256: WARNING - Cannot add property selectedItem to a struct instance after it is constructed.
            this.selected = this.selectedItem = null;
                            ^^^^^^^^^^^^^^^^^

/polymer.html_script_32.js:267: WARNING - Property items never defined on this of type ArraySelectorMixin
        this.deselect(this.items[idx]);
                      ^^^^^^^^^^

/polymer.html_script_32.js:277: WARNING - Property items never defined on this of type ArraySelectorMixin
        this.selectIndex(this.items.indexOf(item));
                         ^^^^^^^^^^

/polymer.html_script_32.js:287: WARNING - Property items never defined on this of type ArraySelectorMixin
        let item = this.items[idx];
                   ^^^^^^^^^^

/polymer.html_script_32.js:295: WARNING - Property push never defined on this of type ArraySelectorMixin{__selectedMap:{set:LOOSE_TOP_FUNCTION} (loose), multi:truthy}
            this.push('selected', item);
            ^^^^^^^^^

/polymer.html_script_32.js:297: WARNING - Cannot add property selected to a struct instance after it is constructed.
            this.selected = this.selectedItem = item;
            ^^^^^^^^^^^^^

/polymer.html_script_32.js:297: WARNING - Cannot add property selectedItem to a struct instance after it is constructed.
            this.selected = this.selectedItem = item;
                            ^^^^^^^^^^^^^^^^^

/polymer.html_script_32.js:391: WARNING - Invalid type for parameter 2 of function customElements.define.
Expected : function(new:HTMLElement):?
Found    : ArraySelector<|function(new:ArraySelector,...?):undefined|>

  customElements.define(ArraySelector.is, ArraySelector);
                                          ^^^^^^^^^^^^^

/polymer.html_script_33.js:47: WARNING - Returned type does not match declared return type.
Expected : HTMLStyleElement|null
Found    : undefined

        return;
        ^^^^^^^

/polymer.html_script_33.js:55: WARNING - Returned type does not match declared return type.
Expected : HTMLStyleElement|null
Found    : Element

      return this._style;
      ^^^^^^^^^^^^^^^^^^^

/polymer.html_script_34.js:132: WARNING - Dangerous use of the global THIS object
      return mutablePropertyChange(this, property, value, old, this.mutableData);
                                                               ^^^^

/polymer.html_script_4.js:37: WARNING - Dangerous use of the global THIS object
        cssText += this.cssFromModule(modules[i]);
                   ^^^^

/polymer.html_script_4.js:61: WARNING - Dangerous use of the global THIS object
          cssText += this.cssFromTemplate(t, m.assetpath);
                     ^^^^

/polymer.html_script_4.js:64: WARNING - Dangerous use of the global THIS object
        cssText += this.cssFromModuleImports(moduleId);
                   ^^^^

/polymer.html_script_4.js:93: WARNING - Dangerous use of the global THIS object
          cssText += this.cssFromModules(include);
                     ^^^^

/polymer.html_script_5.js:87: WARNING - Property importForElement never defined on HTMLImports of type HTMLImports
          HTMLImports.importForElement(this) || document : this.ownerDocument;
          ^^^^^^^^^^^^^^^^^^^^^^^^^^^^

/polymer.html_script_5.js:90: WARNING - Cannot add property __assetpath to a struct instance after it is constructed.
        this.__assetpath = Polymer.ResolveUrl.pathFromUrl(url);
        ^^^^^^^^^^^^^^^^

/polymer.html_script_6.js:121: WARNING - Dangerous use of the global THIS object
             this.isAncestor(base, path) ||
             ^^^^

/polymer.html_script_6.js:122: WARNING - Dangerous use of the global THIS object
             this.isDescendant(base, path);
             ^^^^

/polymer.html_script_6.js:172: WARNING - Dangerous use of the global THIS object
        return this.normalize(path).split('.');
               ^^^^

/polymer.html_script_6.js:191: WARNING - Dangerous use of the global THIS object
      let parts = this.split(path);
                  ^^^^

/polymer.html_script_6.js:218: WARNING - Dangerous use of the global THIS object
      let parts = this.split(path);
                  ^^^^

/polymer.html_script_8.js:103: WARNING - PropertyAccessors extends non-object type ?.

      constructor() {
      ^^^^^^^^^^^^^^^

/polymer.html_script_8.js:110: WARNING - Function this._attributeToProperty: called with 2 argument(s). Function requires at least 3 argument(s) and at most 3.
          this._attributeToProperty(name, value);
          ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

/polymer.html_script_8.js:190: WARNING - Property hasAttribute never defined on this of type PropertyAccessors
        if (!this.hasAttribute(attribute)) {
             ^^^^^^^^^^^^^^^^^

/polymer.html_script_8.js:191: WARNING - Invalid type for parameter 1 of function this._valueToNodeAttribute.
Expected : Element|null
Found    : PropertyAccessors

          this._valueToNodeAttribute(this, value, attribute);
                                     ^^^^

/polymer.html_script_8.js:223: WARNING - Invalid type for parameter 1 of function this._valueToNodeAttribute.
Expected : Element|null
Found    : PropertyAccessors{__serializing:boolean}

        this._valueToNodeAttribute(this, value,
                                   ^^^^

/polymer.html_script_8.js:373: WARNING - Dangerous use of the global THIS object
              return this.__data[property];
                     ^^^^

/polymer.html_script_8.js:376: WARNING - Dangerous use of the global THIS object
              this._setProperty(property, value);
              ^^^^

/polymer.html_script_8.js:417: WARNING - Missing return statement. Function expected to return boolean.
      _setPendingProperty(property, value) {
      ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

/polymer.html_script_9.js:106: WARNING - TemplateStamp extends non-object type ?.

    class TemplateStamp extends superClass {
    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

/polymer.html_script_9.js:110: WARNING - Cannot add property $ to a struct instance after it is constructed.
        this.$ = null;
        ^^^^^^

/polymer.html_script_9.js:215: WARNING - Property hasAttribute never defined on node of type Node
        if (node.localName == 'template' && !node.hasAttribute('preserve-content')) {
                                             ^^^^^^^^^^^^^^^^^

/polymer.html_script_9.js:258: WARNING - Invalid type for parameter 1 of function root.removeChild.
Expected : Node|null
Found    : {nextSibling:?, nodeType:number, textContent:number|string} (loose)

              root.removeChild(n);
                               ^

/polymer.html_script_9.js:315: WARNING - Invalid type for parameter 1 of function Array.from.
Expected : IArrayLike<Attr>|Iterable<Attr>|string
Found    : NamedNodeMap<Attr>|null
More details:
The found type is a union that includes an unexpected type: null
        let attrs = Array.from(node.attributes);
                               ^^^^^^^^^^^^^^^

/polymer.html_script_9.js:337: WARNING - Missing return statement. Function expected to return boolean.
      static _parseTemplateNodeAttribute(node, templateInfo, nodeInfo, name, value) {
      ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

/polymer.html_script_9.js:340: WARNING - Property removeAttribute never defined on node of type Node
          node.removeAttribute(name);
          ^^^^^^^^^^^^^^^^^^^^

/polymer.html_script_9.js:366: WARNING - Property __templateInfo never defined on template of type HTMLTemplateElement
        let templateInfo = template.__templateInfo;
                           ^^^^^^^^^^^^^^^^^^^^^^^

/polymer.html_script_9.js:396: WARNING - Property decorate never defined on HTMLTemplateElement of type HTMLTemplateElement<|function(new:HTMLTemplateElement):?|>
          HTMLTemplateElement.decorate(template);
          ^^^^^^^^^^^^^^^^^^^^^^^^^^^^

/polymer.html_script_9.js:412: WARNING - Returned type does not match declared return type.
Expected : DocumentFragment|null
Found    : Node{$:Object{}, __noInsertionPoint:boolean, nodeList:Array<?>}

        return dom;
        ^^^^^^^^^^^

externs/closure-types.js:217: WARNING - Invalid redeclaration of property _setPendingProperty.
inherited type  : function(this:Polymer_PropertyAccessors,string,*):boolean
overriding type : function(this:Polymer_PropertyEffects,*,*,*):?

Polymer_PropertyEffects.prototype._setPendingProperty = function(property, value, shouldNotify){};
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

externs/closure-types.js:378: WARNING - property connectedCallback not defined on any supertype of Polymer_ElementMixin
Polymer_ElementMixin.prototype.connectedCallback = function(){};
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

externs/closure-types.js:382: WARNING - property disconnectedCallback not defined on any supertype of Polymer_ElementMixin
Polymer_ElementMixin.prototype.disconnectedCallback = function(){};
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

externs/closure-types.js:402: WARNING - property attributeChangedCallback not defined on any supertype of Polymer_ElementMixin
Polymer_ElementMixin.prototype.attributeChangedCallback = function(name, old, value){};
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

externs/closure-types.js:717: WARNING - property mutableData on interface Polymer_OptionalMutableData is not implemented by type OptionalMutableData
Polymer_OptionalMutableData.prototype.mutableData;
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

externs/closure-types.js:731: WARNING - property items on interface Polymer_ArraySelectorMixin is not implemented by type ArraySelectorMixin
Polymer_ArraySelectorMixin.prototype.items;
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

externs/closure-types.js:734: WARNING - property multi on interface Polymer_ArraySelectorMixin is not implemented by type ArraySelectorMixin
Polymer_ArraySelectorMixin.prototype.multi;
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

externs/closure-types.js:737: WARNING - property selected on interface Polymer_ArraySelectorMixin is not implemented by type ArraySelectorMixin
Polymer_ArraySelectorMixin.prototype.selected;
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

externs/closure-types.js:740: WARNING - property selectedItem on interface Polymer_ArraySelectorMixin is not implemented by type ArraySelectorMixin
Polymer_ArraySelectorMixin.prototype.selectedItem;
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

externs/closure-types.js:743: WARNING - property toggle on interface Polymer_ArraySelectorMixin is not implemented by type ArraySelectorMixin
Polymer_ArraySelectorMixin.prototype.toggle;
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

0 error(s), 498 warning(s), 70.9% typed