Stencil: Any version of stencil above **v0.7.20** seems to cause errors on build.

[elebetsamer]

Stencil version:

 @stencil/[email protected]

npm -v = 5.6.0
node -v = v8.11.1 (also tried on 8.9.4)
Windows 10

I'm submitting a:

[x] bug report
[ ] feature request
[ ] support request => Please do not submit support requests here, use one of these channels: https://forum.ionicframework.com/ or https://stencil-worldwide.slack.com

Current behavior:

Any version of stencil above v0.7.20 seems to cause errors on build.

> stencil build

[26:16.9]  @stencil/core v0.7.21
[26:16.9]  build, app, prod mode, started ...
[26:16.9]  compile started ...
[26:28.4]  compile finished in 11.49 s

[ ERROR ]  typescript: ...site/node_modules/@types/node/index.d.ts, line: 2381
           Duplicate identifier 'URL'.

   L2380:      values(): IterableIterator<string>;
   L2381:      [Symbol.iterator](): IterableIterator<[string, string]>;

[ ERROR ]  typescript: ...site/node_modules/@types/node/index.d.ts, line: 2399
           Duplicate identifier 'URLSearchParams'.

   L2399:      export interface LookupOneOptions extends LookupOptions {
   L2400:          all?: false;

[ ERROR ]  typescript: ...site/node_modules/@types/node/index.d.ts, line: 2417
           Cannot export 'URL'. Only local declarations can be exported from a module.

   L2416:      export function lookup(hostname: string, callback: (err: NodeJS.ErrnoException, address: string, family: number) => void): void;
   L2418:      // NOTE: This namespace provides design-time support for util.promisify. Exported members do not exist at runtime.

[ ERROR ]  typescript: ...site/node_modules/@types/node/index.d.ts, line: 2417
           Cannot export 'URLSearchParams'. Only local declarations can be exported from a module.

   L2416:      export function lookup(hostname: string, callback: (err: NodeJS.ErrnoException, address: string, family: number) => void): void;
   L2418:      // NOTE: This namespace provides design-time support for util.promisify. Exported members do not exist at runtime.

[ ERROR ]  typescript: ...site/node_modules/typescript/lib/lib.dom.d.ts, line: 13401
           Duplicate identifier 'URL'.

  L13400:  interface URLSearchParams {
  L13402:       * Appends a specified key/value pair as a new search parameter.

[ ERROR ]  typescript: ...site/node_modules/typescript/lib/lib.dom.d.ts, line: 13424
           Duplicate identifier 'URLSearchParams'.

  L13424:      set(name: string, value: string): void;

[26:28.4]  build failed in 11.54 s

Expected behavior:

Expect the code to build as it does with stencil v0.7.20.

npm packages

"dependencies": {
    "@stencil/core": "0.7.21",
    "@stencil/router": "0.0.28",
    "izitoast": "^1.2.0",
    "luxon": "^1.2.0"
  },
  "devDependencies": {
    "@stencil/dev-server": "0.0.18",
    "@stencil/postcss": "0.0.4",
    "@stencil/sass": "0.0.3",
    "@stencil/utils": "latest",
    "@types/jest": "^21.1.10",
    "@types/marked": "^0.3.0",
    "autoprefixer": "^8.2.0",
    "copyfiles": "^2.0.0",
    "jest": "^21.2.1",
    "npm-run-all": "^4.1.2",
    "onchange": "^3.3.0",
    "rimraf": "^2.6.2"
  },

[tja4472]

Duplicate identifier with types/node 10.0
https://github.com/DefinitelyTyped/DefinitelyTyped/issues/25342

Temp fix

npm i @types/[email protected]