Problem with integrating angular web component Vaadin 14

Hello Vaaadin Community, I am trying to integrate angular web component with Vaadin 14 project. I added my npm dependency to package.json and after npm install my project is available from node_modules. I also installed ts-loader and added my own web pack configuration to resolve typescript files but when i start my project i get ERROR in …/target/frontend/generated-flow-imports.js. Frontend compilation phase is looking for my project in frontend folder not in node_modules. Is that a problem with my java DesignerComponent class annotations? Or is it something wrong in configuration of web pack?

Webpack configuration:

const merge = require('webpack-merge');
const flowDefaults = require('./webpack.generated.js');

module.exports = merge(flowDefaults, {
    resolve: {
        extensions: ['.ts', '.tsx', '.js', '.jsx']

    },
    module: {
        rules: [
            {
                test: /\.ts$/,
                use: ['ts-loader']

            }
        ]
    }
});

I’ve created my Java class like this

package com.finastra.ffc.ui.components.designer.editor;

import com.vaadin.flow.component.Tag;
import com.vaadin.flow.component.dependency.JsModule;
import com.vaadin.flow.component.dependency.NpmPackage;

@Tag("ffc-designer")
@NpmPackage(value = "designer", version = "1.0.1-snapshot")
@JsModule("designer")
public class DesignerComponent {
}

When i run my project i get web pack error

------------------ Starting Frontend compilation. ------------------
2020-08-03 13:37:26.529  INFO 4224 --- [           main]
 dev-webpack                              : Running webpack to compile frontend resources. This may take a moment, please stand by...
2020-08-03 13:37:33.669 ERROR 4224 --- [        webpack]
 dev-webpack                              : ERROR in ../target/frontend/generated-flow-imports.js
2020-08-03 13:37:33.669 ERROR 4224 --- [        webpack]
 dev-webpack                              : Module not found: Error: Can't resolve 'designer' in 'C:\Project\target\frontend'
2020-08-03 13:37:33.669 ERROR 4224 --- [        webpack]
 dev-webpack                              :  @ ../target/frontend/generated-flow-imports.js 198:0-18
2020-08-03 13:37:33.669  INFO 4224 --- [           main]
 dev-webpack                              : Started webpack-dev-server. Time: 271786058ms

generated-flow-imports.js file fragment:
[Link to image]
(http://pasteboard.co/JkEl2LY.png)

Designer - angular web component in node_modules folder
[Link to image]
(https://pasteboard.co/JkEm2Gg.png)