Error when call model.predict

[offchan42]

It's saying that there are a token |= but my code only has one file index.html and it has no such symbol.
What is the cause here?

SyntaxError: Unexpected token |=
    at new Function (<anonymous>)
    at u (https://off99555.github.io/HoNNeT/keras-js/keras.js:13:8807)
    at assigns_cwise_thunk (eval at r (https://off99555.github.io/HoNNeT/keras-js/keras.js:13:10619), <anonymous>:7:29)
    at Object.assigns_ndarrayops [as assigns] (eval at i (https://off99555.github.io/HoNNeT/keras-js/keras.js:1:6744), <anonymous>:3:44)
    at e.value (https://off99555.github.io/HoNNeT/keras-js/keras.js:7:19739)
    at e.value (https://off99555.github.io/HoNNeT/keras-js/keras.js:7:21879)
    at t.value (https://off99555.github.io/HoNNeT/keras-js/keras.js:4:15902)
    at t.<anonymous> (https://off99555.github.io/HoNNeT/keras-js/keras.js:4:16786)
    at o (https://off99555.github.io/HoNNeT/keras-js/keras.js:16:7592)
    at Generator._invoke (https://off99555.github.io/HoNNeT/keras-js/keras.js:16:9001)
    at Generator.t.(anonymous function) [as next] (https://off99555.github.io/HoNNeT/keras-js/keras.js:16:7771)
    at Generator.i (https://off99555.github.io/HoNNeT/keras-js/keras.js:11:1532)
    at u._promiseFulfilled (https://off99555.github.io/HoNNeT/keras-js/keras.js:9:22799)
    at t.<anonymous> (https://off99555.github.io/HoNNeT/keras-js/keras.js:9:24615)
From previous event:
    at t (https://off99555.github.io/HoNNeT/keras-js/keras.js:4:15972)
    at t.<anonymous> (https://off99555.github.io/HoNNeT/keras-js/keras.js:4:18474)
    at o (https://off99555.github.io/HoNNeT/keras-js/keras.js:16:7592)
    at Generator._invoke (https://off99555.github.io/HoNNeT/keras-js/keras.js:16:9001)
    at Generator.t.(anonymous function) [as next] (https://off99555.github.io/HoNNeT/keras-js/keras.js:16:7771)
From previous event:
    at t (https://off99555.github.io/HoNNeT/keras-js/keras.js:4:17225)
    at model.ready.then (https://off99555.github.io/HoNNeT/:165:16)
From previous event:
    at https://off99555.github.io/HoNNeT/:158:20

Here's the javascript part of that index.html file:

     const N_AVAIL_HEROES = 260
     const HERO_INPUT = new Array(2 * N_AVAIL_HEROES).fill(0)
     const vm = new Vue({
         el: '#app',
         data() {
             return {
                 model: null,
                 modelReady: false
             }
         },
         watch: {
             modelReady: function() {
                 if (this.modelReady)
                     console.log('the model is ready now')
             }
         }
     })
     const model = new KerasJS.Model({
         filepaths: {
             model: 'honnet_brain_architecture.json',
             weights: 'honnet_brain_weights_weights.buf',
             metadata: 'honnet_brain_weights_metadata.json'
         }
     })
     function getInputData(legion, hellbourne) {
        console.log('predicting with data')
        const inputData = {
            'hero_input': new Float32Array(HERO_INPUT)
        }
        return inputData
     }
     model.ready().then(() => {
         vm.model = model
         vm.modelReady = true

         // make predictions
         // outputData is an object keyed by names of the output layers
         // or `output` for Sequential models
         model.predict(getInputData([], [])).then(function(outputData) { // <====== error happens here!
             console.log('output')
             console.log(outputData)
         }).catch(err => {
             // handle error
             console.log('pred error: ')
             console.log(err)
         })
     }).catch(err => {
         // handle error
         console.log('ready error: ')
         console.log(err)
     })

[offchan42]

This is the full log message from the console:

predicting with data
keras.js:9 Warning: a promise was created in a handler at https://off99555.github.io/HoNNeT/:165:16 but was not returned from it, see http://goo.gl/rRqMUw
    at t.<anonymous> (https://off99555.github.io/HoNNeT/keras-js/keras.js:9:24552)
    at t (https://off99555.github.io/HoNNeT/keras-js/keras.js:4:17225)
    at model.ready.then (https://off99555.github.io/HoNNeT/:165:16)
From previous event:
    at https://off99555.github.io/HoNNeT/:158:20
N @ keras.js:9
O @ keras.js:9
g @ keras.js:9
n._warn @ keras.js:9
m @ keras.js:9
i._settlePromiseFromHandler @ keras.js:10
i._settlePromise @ keras.js:10
i._settlePromise0 @ keras.js:10
i._settlePromises @ keras.js:10
i._fulfill @ keras.js:10
i._settlePromise @ keras.js:10
i._settlePromise0 @ keras.js:10
i._settlePromises @ keras.js:10
i._fulfill @ keras.js:10
i._resolveCallback @ keras.js:10
i._settlePromiseFromHandler @ keras.js:10
i._settlePromise @ keras.js:10
i._settlePromise0 @ keras.js:10
i._settlePromises @ keras.js:10
i._fulfill @ keras.js:10
s._resolve @ keras.js:10
s._promiseFulfilled @ keras.js:10
i._settlePromise @ keras.js:10
i._settlePromise0 @ keras.js:10
i._settlePromises @ keras.js:10
(anonymous) @ keras.js:8
(index):140 the model is ready now
(index):170 pred error: 
(index):171 SyntaxError: Unexpected token |=
    at new Function (<anonymous>)
    at u (https://off99555.github.io/HoNNeT/keras-js/keras.js:13:8807)
    at assigns_cwise_thunk (eval at r (https://off99555.github.io/HoNNeT/keras-js/keras.js:13:10619), <anonymous>:7:29)
    at Object.assigns_ndarrayops [as assigns] (eval at i (https://off99555.github.io/HoNNeT/keras-js/keras.js:1:6744), <anonymous>:3:44)
    at e.value (https://off99555.github.io/HoNNeT/keras-js/keras.js:7:19739)
    at e.value (https://off99555.github.io/HoNNeT/keras-js/keras.js:7:21879)
    at t.value (https://off99555.github.io/HoNNeT/keras-js/keras.js:4:15902)
    at t.<anonymous> (https://off99555.github.io/HoNNeT/keras-js/keras.js:4:16786)
    at o (https://off99555.github.io/HoNNeT/keras-js/keras.js:16:7592)
    at Generator._invoke (https://off99555.github.io/HoNNeT/keras-js/keras.js:16:9001)
    at Generator.t.(anonymous function) [as next] (https://off99555.github.io/HoNNeT/keras-js/keras.js:16:7771)
    at Generator.i (https://off99555.github.io/HoNNeT/keras-js/keras.js:11:1532)
    at u._promiseFulfilled (https://off99555.github.io/HoNNeT/keras-js/keras.js:9:22799)
    at t.<anonymous> (https://off99555.github.io/HoNNeT/keras-js/keras.js:9:24615)
From previous event:
    at t (https://off99555.github.io/HoNNeT/keras-js/keras.js:4:15972)
    at t.<anonymous> (https://off99555.github.io/HoNNeT/keras-js/keras.js:4:18474)
    at o (https://off99555.github.io/HoNNeT/keras-js/keras.js:16:7592)
    at Generator._invoke (https://off99555.github.io/HoNNeT/keras-js/keras.js:16:9001)
    at Generator.t.(anonymous function) [as next] (https://off99555.github.io/HoNNeT/keras-js/keras.js:16:7771)
From previous event:
    at t (https://off99555.github.io/HoNNeT/keras-js/keras.js:4:17225)
    at model.ready.then (https://off99555.github.io/HoNNeT/:165:16)
From previous event:
    at https://off99555.github.io/HoNNeT/:158:20

[offchan42]

You can test the web here: https://off99555.github.io/HoNNeT/
Full code here: https://github.com/off99555/HoNNeT/blob/master/index.html

[offchan42]

OK. I'm closing this issue because I don't use keras-js in my repository now. I'm using a flask app instead.