stenciljs + amplify auth

package.json

{
  "name": "test-amplify",
  "private": true,
  "version": "0.0.1",
  "description": "Stencil App Starter",
  "scripts": {
    "build": "stencil build",
    "start": "stencil build --dev --watch --serve",
    "test": "stencil test --spec --e2e",
    "test.watch": "stencil test --spec --e2e --watchAll",
    "generate": "stencil generate"
  },
  "devDependencies": {
    "@stencil/core": "^1.12.2",
    "@stencil/router": "^1.0.1",
    "rollup-plugin-node-polyfills": "^0.2.1"
  },
  "license": "MIT",
  "dependencies": {
    "@aws-amplify/auth": "^3.2.1"
  }
}

stencil.config.js

import { Config } from '@stencil/core';

// https://stenciljs.com/docs/config

export const config: Config = {
  globalStyle: 'src/global/app.css',
  globalScript: 'src/global/app.ts',
  taskQueue: 'async',
  outputTargets: [
    {
      type: 'www',
      // comment the following line to disable service workers in production
      serviceWorker: null,
      baseUrl: 'https://myapp.local/'
    }
  ],
  nodeResolve: {
    browser: true,
    preferBuiltins: true
  },
  commonjs: {
    namedExports: {
      'node_modules/@aws-crypto/sha256-js/build/index.js': ['Sha256'],
      'node_modules/@aws-sdk/fetch-http-handler/build/index.js': ['FetchHttpHandler'],
      'node_modules/@aws-crypto/sha256-browser/build/index.js': ['Sha256'],
      'node_modules/@aws-sdk/util-uri-escape/build/index.js': ['escapeUri'],
      'node_modules/@aws-sdk/config-resolver/build/index.js': ['resolveRegionConfig', 'resolveEndpointsConfig'],
      'node_modules/@aws-sdk/middleware-signing/build/index.js': ['resolveAwsAuthConfig', 'getAwsAuthPlugin'],
      'node_modules/@aws-sdk/middleware-retry/build/index.js': ['getRetryPlugin', 'resolveRetryConfig'],
      'node_modules/@aws-sdk/middleware-user-agent/build/index.js': ['getUserAgentPlugin', 'resolveUserAgentConfig'],
      'node_modules/@aws-sdk/smithy-client/build/index.js': ['Client', 'Command', 'isa'],
      'node_modules/@aws-sdk/protocol-http/build/index.js': ['HttpRequest'],
      'node_modules/@aws-sdk/middleware-serde/build/index.js': ['getSerdePlugin'],
      'node_modules/@aws-sdk/property-provider/build/index.js': ['ProviderError'],
      'node_modules/js-cookie/src/js.cookie.js': ['set', 'get', 'remove']
    }
  },
};