ESLint v8.51.0 released

Highlights

New CLI option --no-warn-ignored

This release includes a new CLI option --no-warn-ignored that, when on, suppresses warnings about ignored files that were explicitly passed in the file list. The new option is available only in the flat config mode.

This option is particularly useful when ESLint is run with --max-warnings 0 from tools that pass a list of individual files, such as lint-staged, as it prevents exit code 1 when an ignored file is passed.

{
    "lint-staged": {
        "*.js": "eslint --max-warnings 0 --no-warn-ignored"
    }
}

API

As part of this change, FlatESLint constructor has a new option warnIgnored: boolean, default true.

The warnIgnored option of FlatESLint#lintText() is still available, but it now defaults to the value of the constructor option. Effectively, its default value is changed from false to true. In order to retain previous behavior, pass warnIgnored: false to FlatESLint#lintText():

const eslint = new FlatESLint();

await eslint.lintFiles(patterns);
await eslint.lintText(code, { filePath, warnIgnored: false });

Features

• 0a9c433 feat: Add --no-warn-ignored CLI option for flat config (#17569) (Domantas Petrauskas)
• 977e67e feat: logical-assignment-operators to report expressions with 3 operands (#17600) (Yosuke Ota)

Bug Fixes

• f976b2f fix: make rule severity case-sensitive in flat config (#17619) (Milos Djermanovic)
• 0edfe36 fix: Ensure crash error messages are not duplicated (#17584) (Nicholas C. Zakas)
• dd79abc fix: eslint-disable to be able to parse quoted rule names (#17612) (Yosuke Ota)
• d2f6801 fix: Ensure correct code path for && followed by ?? (#17618) (Nicholas C. Zakas)

Documentation

• ee5be81 docs: default to sourceType: "module" in rule examples (#17615) (Francesco Trotta)
• 1aa26df docs: Add more examples for multiline-ternary (#17610) (George Ashiotis)
• 47d0b44 docs: Update README (GitHub Actions Bot)
• dbf831e docs: use generated og image (#17601) (Percy Ma)
• 1866da5 docs: Update README (GitHub Actions Bot)

Chores

• 1ef39ea chore: upgrade @eslint/js@8.51.0 (#17624) (Milos Djermanovic)
• f8c7403 chore: package.json update for @eslint/js release (ESLint Jenkins)
• 2665552 test: fix flat config linter tests to use Linter in flat config mode (#17616) (Milos Djermanovic)
• 7b77bcc chore: Refactor CodePathState (#17510) (Nicholas C. Zakas)
• bc77c9a chore: Document and refactor ForkContext (#17566) (Nicholas C. Zakas)
• 24e1f14 chore: Refactor and document CodePath (#17558) (Nicholas C. Zakas)