Before You File a Proposal Please Confirm You Have Done The Following...

• I have searched for related issues and found none that match my proposal.
• I have searched the current rule list and found no rules that match my proposal.
• I have read the FAQ and my problem is not listed.

Relevant Package

typescript-estree

My proposal is suitable for this project

• I believe my proposal would be useful to the broader TypeScript community (meaning it is not a niche proposal).

Description

Spinning out from #6367 (comment): we have logic in typescript-estree to ensure provided configuration options are the expected types. But we don't show any indication about incorrect types to users who configure us incorrectly.

Fail

{
  parserOptions: {
    project: 123
  }
}

Pass

{
  parserOptions: {
    project: ['tsconfig.eslint.json']
  }
}

Additional Info

Proposal:

• console.warn in v6?
• throw an error in v7?