Support for defining custom tag syntax #366

Example:

I want to use supported JSDoc tags with @custom-elements-manifest/analyzer:

/**
 * @prop {string} dir - The directionality of the element.
 * @prop {string} lang - The language of the element.
 */

Problem:

There is no way to define custom tags that support this format.

// tsdoc.json
{
  "$schema": "https://developer.microsoft.com/json-schemas/tsdoc/v0/tsdoc.schema.json",
  "extends": ["@microsoft/api-extractor/extends/tsdoc-base.json"],
  "tagDefinitions": [
    {
      "tagName": "@prop",
      "syntaxKind": "modifier",
      "allowMultiple": true
    }
  ],
  "supportForTags": {
    "@prop": true
  }
}

ESLint will not pass.

Proposal:

Support custom tag syntax, perhaps through regex. Further, it would be nice if you could omit specifying the syntax kind, such that the parser would allow the content following the tag to be whatever.