@typescript-eslint/parser has stopped working

Describe the bug Viewing the AST generated by @typescript-eslint/parser is no longer possible. It worked a couple weeks ago.

To Reproduce Steps to reproduce the behavior:

1. Go to https://astexplorer.net/
2. For the parser choose @typescript-eslint/parser
3. Observe that the tree doesn’t update, and if you open the console there’s an error loading the parser

Expected behavior @typescript-eslint/parser loads and updates the tree

Screenshots

Browser (please complete the following information):

• OS: Mac OS 10.15.5
• Browser: Chrome
• Version: 84.0.4147.89 (Also repros with any other browser and OS I tried, including in incognito mode to ensure there’s not a problem with any cached stuff)

astexplorer settings:

• Selected parser: @typescript-eslint/parser
• Selected transformer (if applicable): none
• Contents of the local storage key explorerSettingsV1 (code can be removed if you don’t want it to be public)

{
  "showTransformPanel": false,
  "parserSettings": {},
  "parserPerCategory": {
    "javascript": "acorn"
  },
  "workbench": {
    "parser": "acorn",
    "code": "/**\n * Paste or drop some JavaScript here and explore\n * the syntax tree created by chosen parser.\n * You can use all the cool new features from ES6\n * and even more. Enjoy!\n */\n\nlet tips = [\n  \"Click on any AST node with a '+' to expand it\",\n\n  \"Hovering over a node highlights the \\\n   corresponding location in the source code\",\n\n  \"Shift click on an AST node to expand the whole subtree\"\n];\n\nfunction printTips() {\n  tips.forEach((tip, i) => console.log(`Tip ${i}:` + tip));\n}\n",
    "keyMap": "default",
    "transform": {
      "code": "",
      "transformer": null
    }
  }
}

[fkling]

Looks like we are somehow replacing a module that some part of typescript-eslint depends on. I have tried to tweak the webpack configuration but haven’t been successful yet. I’ll keep trying.

[fkling]

It should work again as of d0d46179a0014ee2826d38cb81b9867de3fbfd0a (already deployed) . Please let me know if it doesn’t.