tslint how to disable error “someVariable is declared but its value is never read ”

Question

I\'m using tslint, and got the error.

\'myVariable\' is declared but its value is never read.

I went to the website that documents the rules

Answer 1

First turn off noUnusedLocals in tsconfig.json:

{
  "compilerOptions": {
    "noUnusedLocals": false,
  }
}

Then fix eslint rules in .eslintrc.js:

module.exports = {
  rules: {
    'no-unused-vars': ['warn', { 'varsIgnorePattern': '^_' }],
    '@typescript-eslint/no-unused-vars': ['warn', { 'varsIgnorePattern': '^_' }],
  },
};

And If using @typescript-eslint/naming-convention rule should add leadingUnderscore: 'allow', For example, if you are using Airbnb config:

'@typescript-eslint/naming-convention': [
  'error',
  {
    selector: 'variable',
    format: ['camelCase', 'PascalCase', 'UPPER_CASE'],
    leadingUnderscore: 'allow',
  },
  {
    selector: 'function',
    format: ['camelCase', 'PascalCase'],
  },
  {
    selector: 'typeLike',
    format: ['PascalCase'],
  },
],