TS2339: Property '_params' does not exist on type '(Anonymous class)'.

[tymiao1220]

I am using npm to install latest version of AMI, and when I import to use them, I got error syntax like TS2339: Property ' ' does not exist on type '(Anonymous class)'. How should I fix that? here is my wepack config:

const path = require('path');
const webpack = require('webpack');
module.exports = {
    mode: 'development',
    entry: './src/main.js',
    output: {
    path: path.resolve(__dirname, './public'),
    filename: 'app.bundle.js'
    },
    resolve: {
        extensions: ['.ts', '.js', '.css', '.html']
    },
    module:{
        rules:[
            {
                test: /\.js$/,
                exclude: /(node_modules|bower_components)/,
                use: {
                    loader: 'babel-loader',
                    options: {
                            presets: ['env']
                        }
                    }
            },
            {
                test: /\.ts$/,
                use: {
                        loader: 'ts-loader'
                    }
            
            }]
    },
    plugins:[
        new webpack.ProvidePlugin({
            THREE: 'three'
        })
    ],
    devServer: {
        host: '0.0.0.0',
        port:8888,
        disableHostCheck: true,
        contentBase: [path.join(__dirname, "public"),path.join("/")]
   }
};

and tsconfig.json

{
  "compilerOptions": {
    "target": "es5" /* Specify ECMAScript target version: 'ES3' (default), 'ES5', 'ES2015', 'ES2016', 'ES2017','ES2018' or 'ESNEXT'. */,
    "module": "commonjs" /* Specify module code generation: 'none', 'commonjs', 'amd', 'system', 'umd', 'es2015', or 'ESNext'. */,
    "declaration": false /* Generates corresponding '.d.ts' file. */,
    "declarationMap": false /* Generates a sourcemap for each corresponding '.d.ts' file. */,
    "sourceMap": true /* Generates corresponding '.map' file. */,
    "outDir": "./" /* Redirect output structure to the directory. */,
    "strict": false /* Enable all strict type-checking options. */,
    "esModuleInterop": true /* Enables emit interoperability between CommonJS and ES Modules via creation of namespace objects for all imports. Implies 'allowSyntheticDefaultImports'. */
    // "lib": "es6"
  },
}

Thank you.