Cannot parse enum where key contains a slash

[brunoparga]

• I have tried restarting my IDE and the issue persists.
• I have updated to the latest version of the packages. (Not TypeScript, see below)
• I have read the FAQ and my problem is not listed.

Repro

The minimal repo I created did not have the bug. The bug happens in my repo cicero, branch eslint-issue, file ./src/grammar/grammarCategories.ts, line 19 ('Masculine/Feminine' = 'masculine/feminine', inside an enum). I have isolated this by running eslint against every .ts and .tsx file in the repo, and every enum in the relevant file - everything runs fine except for this file when this line is present.

Expected Result

When running eslint ./src/grammar/grammarCategories.ts, I expected eslint to check the file and list any errors it finds.

Actual Result

I get the following error, which removing the slash and the quotes around the key solves:

➜  cicero git:(main) ✗ eslint ./src/grammar/grammarCategories.ts

Oops! Something went wrong! :(

ESLint: 7.12.1

AssertionError [ERR_ASSERTION]: Node must be provided when reporting error if location is not provided
    at assertValidNodeInfo (/home/bruno/code/projects/js/cicero/node_modules/.pnpm/eslint@7.12.1/node_modules/eslint/lib/linter/report-translator.js:98:9)
    at /home/bruno/code/projects/js/cicero/node_modules/.pnpm/eslint@7.12.1/node_modules/eslint/lib/linter/report-translator.js:315:9
    at Object.report (/home/bruno/code/projects/js/cicero/node_modules/.pnpm/eslint@7.12.1/node_modules/eslint/lib/linter/linter.js:920:41)
    at Program:exit (/home/bruno/code/projects/js/cicero/node_modules/.pnpm/eslint@7.12.1/node_modules/eslint/lib/rules/no-unused-vars.js:622:33)
    at /home/bruno/code/projects/js/cicero/node_modules/.pnpm/eslint@7.12.1/node_modules/eslint/lib/linter/safe-emitter.js:45:58
    at Array.forEach (<anonymous>)
    at Object.emit (/home/bruno/code/projects/js/cicero/node_modules/.pnpm/eslint@7.12.1/node_modules/eslint/lib/linter/safe-emitter.js:45:38)
    at NodeEventGenerator.applySelector (/home/bruno/code/projects/js/cicero/node_modules/.pnpm/eslint@7.12.1/node_modules/eslint/lib/linter/node-event-generator.js:254:26)
    at NodeEventGenerator.applySelectors (/home/bruno/code/projects/js/cicero/node_modules/.pnpm/eslint@7.12.1/node_modules/eslint/lib/linter/node-event-generator.js:283:22)
    at NodeEventGenerator.leaveNode (/home/bruno/code/projects/js/cicero/node_modules/.pnpm/eslint@7.12.1/node_modules/eslint/lib/linter/node-event-generator.js:306:14)

Additional Info

  eslint:cli CLI args: [ './src/grammar/grammarCategories.ts', '--debug' ] +0ms
  eslint:cli Running on files +7ms
  eslint:ignore-pattern Create with: [ IgnorePattern { patterns: [ '/**/node_modules/*' ], basePath: '/home/bruno/code/projects/js/cicero', loose: false } ] +0ms
  eslint:ignore-pattern   processed: { basePath: '/home/bruno/code/projects/js/cicero', patterns: [ '/**/node_modules/*' ] } +6ms
  eslint:ignore-pattern Create with: [ IgnorePattern { patterns: [ '/**/node_modules/*' ], basePath: '/home/bruno/code/projects/js/cicero', loose: false } ] +2ms
  eslint:ignore-pattern   processed: { basePath: '/home/bruno/code/projects/js/cicero', patterns: [ '/**/node_modules/*' ] } +1ms
  eslint:file-enumerator Start to iterate files: [ './src/grammar/grammarCategories.ts' ] +0ms
  eslint:file-enumerator File: /home/bruno/code/projects/js/cicero/src/grammar/grammarCategories.ts +2ms
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  eslint:rules Loading rule 'template-curly-spacing' (remaining=6) +2ms
  eslint:rules Loading rule 'yield-star-spacing' (remaining=5) +1ms
  eslint:rules Loading rule 'strict' (remaining=4) +37ms
  eslint:ignore-pattern Create with: [ IgnorePattern { patterns: [ '/**/node_modules/*' ], basePath: '/home/bruno/code/projects/js/cicero', loose: false } ] +5s
  eslint:ignore-pattern   processed: { basePath: '/home/bruno/code/projects/js/cicero', patterns: [ '/**/node_modules/*' ] } +0ms
  eslint:ignore-pattern Check {
  filePath: '/home/bruno/code/projects/js/cicero/src/grammar/grammarCategories.ts',
  dot: false,
  relativePath: 'src/grammar/grammarCategories.ts',
  result: false
} +2ms
  eslint:cli-engine Lint /home/bruno/code/projects/js/cicero/src/grammar/grammarCategories.ts +0ms
  eslint:linter Linting code for /home/bruno/code/projects/js/cicero/src/grammar/grammarCategories.ts (pass 1) +0ms
  eslint:linter Verify +0ms
  eslint:linter With ConfigArray: /home/bruno/code/projects/js/cicero/src/grammar/grammarCategories.ts +1ms
  eslint:linter An error occurred while traversing +207ms
  eslint:linter Filename: /home/bruno/code/projects/js/cicero/src/grammar/grammarCategories.ts +0ms
  eslint:linter Line: 2 +0ms
  eslint:linter Parser Options: {
  ecmaVersion: 9,
  ecmaFeatures: {
    globalReturn: false,
    jsx: true,
    generators: false,
    objectLiteralDuplicateProperties: false
  },
  sourceType: 'module'
} +1ms
  eslint:linter Parser Path: /home/bruno/code/projects/js/cicero/node_modules/.pnpm/@typescript-eslint/parser@4.6.1_eslint@7.12.1+typescript@3.9.7/node_modules/@typescript-eslint/parser/dist/index.js +0ms
  eslint:linter Settings: {
  'import/resolver': { node: { extensions: [Array] } },
  react: { pragma: 'React', version: 'detect' },
  propWrapperFunctions: [ 'forbidExtraProps', 'exact', 'Object.freeze' ],
  'import/extensions': [ '.js', '.mjs', '.jsx' ],
  'import/core-modules': [],
  'import/ignore': [ 'node_modules', '\\.(coffee|scss|css|less|hbs|svg|json)$' ]
} +0ms

[normal output without --debug flag follows]

Versions

package	version
@typescript-eslint/parser	4.6.1
TypeScript	3.9.7
ESLint	7.12.1
node	14.15.0

(TypeScript is not at the latest version because of this issue)

[bradzacher]

Looking at your config, you're not using our rule.

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

[brunoparga]

Oops. Thank you. That solves the issue.