example of specifing eslintrc and eslintignore file in webpack eslint-loader.

webpack-eslnt-loader-config-files.js

module.exports = {
  module: {
    rules: [{
      test: /\.ts?$/,
      exclude: [/node_modules/],
      enforce: "pre",
      use: {
        loader: "eslint-loader",
        options: {
          fix: true,
          configFile: path.resolve(__dirname, ".eslintrc.js"),  // config file path
          ignoreFile: path.resolve(__dirname, ".eslintignore"), // ignore file path
        },
      },
    }],
  },
};