fix(deps): update dependency eslint to v9

[renovate]

This PR contains the following updates:

Package	Change	Age	Adoption	Passing	Confidence
eslint (source)	^8.57.0 -> ^9.3.0

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Release Notes

eslint/eslint (eslint)

v9.3.0

Compare Source

v9.2.0

Compare Source

v9.1.1

Compare Source

v9.1.0

Compare Source

v9.0.0

Compare Source

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[renovate]

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[tuanphamcybozu]

The flat config file format has been the default configuration file format since ESLint v9.0.0
Ref: https://eslint.org/docs/latest/use/configure/migration-guide#start-using-flat-config-files

The previous format, eslintrc, is now deprecated .

[tuanphamcybozu]

If you are using FlatCompat from the @eslint/eslintrc package, you may not be able to access each of the plugins that are referenced inside of an eslintrc-style configuration. In that case, you can use the fixupConfigRules() function to wrap all plugins, as in this example:

// eslint.config.js
import { fixupConfigRules } from "@eslint/compat";
import { FlatCompat } from "@eslint/eslintrc";

const flatCompat = new FlatCompat();

export default [

    ...fixupConfigRules(
        flatCompat.extends("my-config")
    )

    // other config
];

Ref: https://eslint.org/blog/2024/05/eslint-compatibility-utilities/#using-with-flatcompat

[tuanphamcybozu]

• import FlatCompat and create a new instance to convert an existing eslintrc config. For example, if the npm package eslint-config-my-config is in eslintrc format.
  Ref: https://eslint.org/docs/latest/use/configure/migration-guide#using-eslintrc-configs-in-flat-config

• TypeError: Missing parameter 'recommendedConfig' in FlatCompat constructor
  => The recommendedConfig option is required when any config uses eslint:recommended, including any config in an extends clause. To fix this, using @eslint/js to provide the eslint:recommended config.
  Ref: https://github.com/eslint/eslintrc?tab=readme-ov-file#troubleshooting

[tuanphamcybozu]

Example: https://eslint.org/docs/latest/use/configure/migration-guide#eslintrc-examples

[tuanphamcybozu]

The following CLI flags are no longer supported with the flat config file format:

--rulesdir
--ext
--resolve-plugins-relative-to

Ref: https://eslint.org/docs/latest/use/configure/migration-guide#cli-flag-changes

[tuanphamcybozu]

Using the recommended config from @eslint/js in a configuration file enables this rule.
Ref: https://eslint.org/docs/latest/rules/no-constant-condition