TypeError [ERR_INVALID_ARG_TYPE]: The "path" argument must be of type string. Received type undefined

[hqm19]

What happens?

Use umi-server with ssr config "disableExternal: true" got a runtime error:

➜  normal git:(master) ✗ node server.js
internal/validators.js:125
    throw new ERR_INVALID_ARG_TYPE(name, 'string', value);
    ^

TypeError [ERR_INVALID_ARG_TYPE]: The "path" argument must be of type string. Received type undefined
    at validateString (internal/validators.js:125:11)
    at Object.dirname (path.js:1260:5)
    at resolve (/.../umi-server/examples/normal/dist/umi.server.js:1273:22)
    at module.exports../node_modules/_app-root-path@2.2.1@app-root-path/lib/app-root-path.js.module.exports (/.../umi-server/examples/normal/dist/umi.server.js:1156:20)
    at Object.<anonymous> (/.../umi-server/examples/normal/dist/umi.server.js:1119:18)
    at Object../node_modules/_app-root-path@2.2.1@app-root-path/index.js (/.../umi-server/examples/normal/dist/umi.server.js:1120:30)
    at __webpack_require__ (/.../umi-server/examples/normal/dist/umi.server.js:687:30)
    at fn (/.../umi-server/examples/normal/dist/umi.server.js:61:20)
    at createLocalStorage (/.../umi-server/examples/normal/dist/umi.server.js:22395:23)
    at Object../src/pages/index.tsx (/.../umi-server/examples/normal/dist/umi.server.js:63967:67)

Mini Showcase Repository(REQUIRED)

Just the official umi-server examples:
https://github.com/umijs/umi-server/tree/master/examples/normal

How To Reproduce

1. git clone https://github.com/umijs/umi-server.git && cd examples/normal && cnpm i
2. modify .umirc.ts, change ssr config to

  //ssr: true,
  ssr: {
    disableExternal: true,
  },

3. cnpm install localstorage-ponyfill -S
4. modify src/pages/index.tsx as below

import React from 'react';
import styles from './index.css';
import { createLocalStorage } from "localstorage-ponyfill"

export const localStorage = createLocalStorage()
export default function() {
  localStorage.setItem("key1", "v1")
  let v1 = localStorage.getItem("key1")
  console.log("v1:"+v1)
  return (
    ...
  );
}

5. umi dev
6. after umi dev ready, ctrl-c to break it. get dist generated as below

➜  normal git:(master) ✗ ll dist
total 9816
drwxr-xr-x   9  staff      288  5  5 10:45 .
-rw-r--r--   1  staff  2309225  5  5 10:45 umi.server.js.map
-rw-r--r--   1  staff  2413680  5  5 10:45 umi.server.js
-rw-r--r--   1  staff      172  5  5 10:45 ssr-client-mainifest.json
-rw-r--r--   1  staff      324  5  5 10:08 index.html
-rw-r--r--   1  staff   283820  5  5 10:08 umi.js
-rw-r--r--   1  staff      549  5  5 10:08 umi.css
drwxr-xr-x   3  staff       96  5  5 10:08 static
drwxr-xr-x  22  staff      704  5  5 10:08 ..

if use 'umi build' here directly, the config "disableExternal: true" sames doesn't work, and umi.server.js doesn't contains the dependencies.

7. node server.js

internal/validators.js:125
    throw new ERR_INVALID_ARG_TYPE(name, 'string', value);
    ^

TypeError [ERR_INVALID_ARG_TYPE]: The "path" argument must be of type string. Received type undefined
    at validateString (internal/validators.js:125:11)
    at Object.dirname (path.js:1260:5)
    at resolve (/.../umi-server/examples/normal/dist/umi.server.js:1273:22)
    ...

Context

• Umi Version:
  2.13.13
• Node Version:
  v10.16.3
• Platform:
  Darwin Kernel Version 19.3.0
  macOS 10.15.3