Cannot read property 'loc' of undefined

Tell us about your environment

• ESLint Version: v7.13.0
• Node Version: v14.15.1
• npm Version: 6.14.9

What parser (default, @babel/eslint-parser, @typescript-eslint/parser, etc.) are you using? @typescript-eslint/parser Please show your full configuration:

Configuration

{
    "root": true,
    "extends": ["xxx", "xxx", "plugin:jest/recommended"],
    "parser": "@typescript-eslint/parser",
    "parserOptions": {
        "sourceType": "module",
        "ecmaVersion": 6,
        "ecmaFeatures": {
            "jsx": true
        },
        "project": "./tsconfig.json"
    },
    "env": {
        "browser": true,
        "mocha": true,
        "node": true,
        "jest": true
    },
    "plugins": ["jest"],
    "rules": {
        "indent": ["error", 4, { "SwitchCase": 1 }],
        "@typescript-eslint/no-namespace": "off",
        "@typescript-eslint/ban-ts-ignore": "off",
        "jest/no-commented-out-tests": "off"
    },
    "globals": {
        "jQuery": false,
        "$": false,
    },
    "overrides": [
        {
            "files": ["test/integration/**/*"],
            "rules":{
                "@typescript-eslint/no-require-imports": "off"
            }
        }
    ]
}

What did you do? Please include the actual source code causing the issue, as well as the command that you used to run ESLint. type const in ts file , output above error messages

[Error - 6:22:23 PM] ESLint stack trace: [Error - 6:22:23 PM] TypeError: Cannot read property ‘loc’ of undefined Occurred while linting /Users/xxx/xxx/test/unit/xxx/src/core/xxxx/xxx/cell/xxxx.spec.ts:1 at Object.VariableDeclaration [as listener] (/Users/xxxx/xxx/node_modules/eslint/lib/rules/indent.js:1422:69) at /Users/xxx/xxx/node_modules/eslint/lib/rules/indent.js:1634:55 at Array.forEach () at Program:exit (/Users/xxxx/xxx/node_modules/eslint/lib/rules/indent.js:1634:26) at /Users/xxxx/xxxx/node_modules/eslint/lib/linter/safe-emitter.js:45:58 at Array.forEach () at Object.emit (/Users/xxxx/sheet/node_modules/eslint/lib/linter/safe-emitter.js:45:38) at NodeEventGenerator.applySelector (/Users/xxx/xxxx/node_modules/eslint/lib/linter/node-event-generator.js:254:26) at NodeEventGenerator.applySelectors (/Users/xxx/xxx/node_modules/eslint/lib/linter/node-event-generator.js:283:22) at NodeEventGenerator.leaveNode (/Users/xxxx/xxx/node_modules/eslint/lib/linter/node-event-generator.js:306:14)

What did you expect to happen?

What actually happened? Please include the actual, raw output from ESLint.

Are you willing to submit a pull request to fix this bug?

[mdjermanovic]

Hi @zhongzhong0505, thanks for the issue!

Some core rules don’t work well with typescript code. In that case, replacement rules from @typescript-eslint/eslint-plugin should be used instead. You can find more details here:

https://github.com/typescript-eslint/typescript-eslint/blob/master/docs/getting-started/linting/FAQ.md#i-am-using-a-rule-from-eslint-core-and-it-doesnt-work-correctly-with-typescript-code.

Can you try with @typescript-eslint/indent instead of the core indent rule:

{
  "indent": "off",
  "@typescript-eslint/indent": ["error"]
}

[ddialar]

{
  "indent": "off",
  "@typescript-eslint/indent": ["error"]
}

I would recommend to include the amount of indents that are wished:

{
  "indent": "off",
  "@typescript-eslint/indent": ["error", 2]
}