Strange issue on a SimpleBarChartComponent realized in code behind

[fededim]

In my Blazor WebAssembly solution I have these 2 files

CameraReliability.razor

@page "/CameraReliability"

<h1>CameraReliability</h1>

<p>Current count: @currentCount</p>

<button class="btn btn-primary" @onclick="IncrementCount">Click me</button>

<Chart @ref="_barChart"
       Config="@_barChartConfig"
       TConfig="ChartJs.Blazor.ChartJS.BarChart.BarConfig"
       Width="600"
       Height="300" />

CameraReliability.razor.cs

using System;
using System.Collections.Generic;
using System.Linq;
using System.Net.Http;
using ChartJs.Blazor.ChartJS.BarChart;
using ChartJs.Blazor.ChartJS.BarChart.Axes;
using ChartJs.Blazor.ChartJS.Common.Axes;
using ChartJs.Blazor.ChartJS.Common.Axes.Ticks;
using ChartJs.Blazor.ChartJS.Common.Properties;
using ChartJs.Blazor.Charts;
using ChartJs.Blazor.Util;
using Microsoft.AspNetCore.Components;

namespace SincroADR_GUI.Client.Pages
{
    public partial class CameraReliability
    {
        private readonly HttpClient Http;
        private int currentCount = 0;

        private BarConfig _barChartConfig;
        private ChartJsBarChart _barChart;
        private BarDataset<double> _barDataSet;

        protected override void OnInitialized()
        {
            _barChartConfig = new BarConfig
            {
                Options = new BarOptions
                {
                    Title = new OptionsTitle
                    {
                        Display = true,
                        Text = "Simple Bar Chart"
                    },
                    Scales = new BarScales
                    {
                        XAxes = new List<CartesianAxis>
                    {
                        new BarCategoryAxis
                        {
                            BarPercentage = 0.5,
                            BarThickness = BarThickness.Flex
                        }
                    },
                        YAxes = new List<CartesianAxis>
                    {
                        new BarLinearCartesianAxis
                        {
                            Ticks = new LinearCartesianTicks
                            {
                                BeginAtZero = true
                            }
                        }
                    }
                    }
                }
            };

            _barChartConfig.Data.Labels.AddRange(new[] { "A", "B", "C", "D" });

            _barDataSet = new BarDataset<double>
            {
                Label = "My double dataset",
                BackgroundColor = new[] { ColorUtil.RandomColorString(), ColorUtil.RandomColorString(), ColorUtil.RandomColorString(), ColorUtil.RandomColorString() },
                BorderWidth = 0,
                HoverBackgroundColor = ColorUtil.RandomColorString(),
                HoverBorderColor = ColorUtil.RandomColorString(),
                HoverBorderWidth = 1,
                BorderColor = "#ffffff"
            };

            _barDataSet.AddRange(new double[] { 8, 5, 3, 7 });
            _barChartConfig.Data.Datasets.Add(_barDataSet);

            _barChart.Config = _barChartConfig;
        }


        public CameraReliability()
        {
        }

        public CameraReliability(HttpClient httpClient) : this()
        {
            Http = httpClient;
        }


        public void IncrementCount()
        {
            currentCount++;
        }
    }
}

which are extracted (separeted into code behind) from the SimpleBarChartComponent.razor of the examples of your ChartsJs.Blazor library. If I try to compile the code I get these 2 errors:

1. Error CS0452 The type 'double' must be a reference type in order to use it as parameter 'TData' in the generic type or method 'BarDataset' SincroADR_GUI.Client C:\Users\dimarco\source\repos\SincroADR\SincroADR_GUI\Client\Pages\CameraReliability.razor.cs 23 Active
2. Error CS1503 Argument 1: cannot convert from 'ChartJs.Blazor.ChartJS.BarChart.BarDataset' to 'ChartJs.Blazor.ChartJS.MixedChart.IMixableDataset' SincroADR_GUI.Client C:\Users\dimarco\source\repos\SincroADR\SincroADR_GUI\Client\Pages\CameraReliability.razor.cs 74 Active

   For the first problem if you check the class BarDataset it requires a class in the generic type (hence double is not possible), however I am wondering why if you use it in a pure razor file it compiles and works fine. For the second problem it's again the same reason.

   Can anybody tell me why this happens ?

[fededim]

Ok the problem was that the latest released Nuget package (1.1.0) was not updated, I switched to the prerelease v.2.0.0-preview1 and the errors are gone (now BarDataset accept also non class types). I close the issue.

[fededim]

I closed the issue too early. With the prerelease package the previous compilation errors are gone, however I have now this error:

1. Error TS18003 No inputs were found in config file 'C:/Users/dimarco/.nuget/packages/chartjs.blazor/2.0.0-preview1/contentFiles/any/netstandard2.1/tsbuild/release/tsconfig.json'. Specified 'include' paths were '["../../wwwroot/ts/*.ts"]' and 'exclude' paths were '[]'. C:\Users\dimarco.nuget\packages\chartjs.blazor\2.0.0-preview1\contentFiles\any\netstandard2.1\tsbuild\release\tsconfig.json 1 Active

The content of tsconfig.json (inside .nuget folder, not a file of my solution)

{
    "compilerOptions": {
        "allowJs": true,
        "module": "none",
        "target": "es2018",
        "lib": [
            "dom",
            "es2018"
        ],
        "outFile": "../../wwwroot/ChartJsBlazorInterop.js",
        "sourceMap": false,
        "typeRoots": [
            "../../wwwroot/ts/types/"
        ],
        "alwaysStrict": true
    },
    "include": [
        "../../wwwroot/ts/*.ts"
    ],
    "compileOnSave": true
}

It seems that VisualStudio is trying to compile TypeScript files, why ? Since there are no typescript files, I am wondering why it returns an error.

[fededim]

I have also tried to add the package Microsoft.TypeScript.MSBuild as suggested by VisualStudio, however the error remains.

[fededim]

There is already an issue about my problem, I close again this one and I'll continue there.