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eslint-plugin-ts-expect-error-validator

v0.0.5

Published

A rule that enforces proper usage and validation of TypeScript's @ts-expect-error comments for easier error management

Downloads

428

Readme

eslint-plugin-ts-expect-error-validator

A rule that enforces proper usage and validation of TypeScript's "@ts-expect-error" comments for easier error management

Installation

yarn add -D eslint-plugin-ts-expect-error-validator

Usage

Add it to your ESLint configuration:

{
  "plugins": [
    "ts-expect-error-validator"
  ],
  "rules": {
    "ts-expect-error-validator/no-empty-expect-error": "error"
  }
}

Configure the rule to use strict or default validation mode:

{
  "plugins": [
    "ts-expect-error-validator"
  ],
  "rules": {
    "ts-expect-error-validator/no-empty-expect-error": [
      "error",
      {
        "validationMode": "strict"
      }
    ]
  }
}

Options:

| Option | Description | |------------------|------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------| | validationMode | Specifies the validation mode to use. Can be either default or strict. In default mode, only the expected error codes are validated. In strict mode, the error code and error message are validated. Default is default. |

Rule Details

This rule enforces the following rules for @ts-expect-error comments:

  • Each @ts-expect-error comment should contain at least one TypeScript error code, enclosed in square brackets ( e.g. [TS123]).
  • If using the strict validation mode, each error code should be followed by an error description, separated by a hyphen (e.g. [TS2532 - Object is possibly 'undefined']).
  • The TypeScript error code should start with TS.

Example Usage:

// @ts-expect-error [TS6133] - ignore the 'myNumber' is declared but its value is never read message
let myNumber: string | undefined;

// You can also ignore more then one error for a line: 
// @ts-expect-error [TS2322, TS6133]
const object: { a: number } = { b: 5 };

Hits

  • There is a package for validation specified signatures.

License

This library is released under the MIT License.