Enforce that boolean variables are prefixed with an allowed verb

[isBatak]

{
  "@typescript-eslint/naming-convention": [
    "error",
    {
      "selector": "variable",
      "types": ["boolean"],
      "format": ["StrictPascalCase"],
      "prefix": ["is", "should", "has", "can", "did", "will"]
    }
  ]
}

Based on this rules https://github.com/kettanaito/naming-cheatsheet#prefixes
"prefix": ["is", "should", "has"]

[fvoska]

I like this, but it will probably cause many errors on some projects. Maybe make it a warning?

[isBatak]

Fix them when you touch that file...

[isBatak]

And I think we can't because we already have error rule set for interface naming. We just have to extend it to more use-cases.

"@typescript-eslint/naming-convention": [
"error",
  {
    "selector": "interface",
    "format": ["PascalCase"],
    "custom": {
      "regex": "^I[A-Z]",
      "match": true
    }
  },
  {
    "selector": ["enum", "enumMember"],
    "format": ["StrictPascalCase"]
  },
  {
  "selector": "variable",
  "types": ["boolean"],
  "format": ["StrictPascalCase"],
  "prefix": ["is", "should", "has"]
  }
]

[fvoska]

@isBatak do you have time to create a PR with this rule added?