Error: '<variable>' is assigned to itself

[probablykasper]

Before You File a Bug Report Please Confirm You Have Done The Following...

• I have tried restarting my IDE and the issue persists.
• I have updated to the latest version of the packages.

What version of ESLint are you using?

8.39.0

What version of eslint-plugin-svelte are you using?

2.27.1

What did you do?

Configuration

module.exports = {
	root: true,
	extends: [
		'eslint:recommended',
		'plugin:@typescript-eslint/recommended',
		'plugin:svelte/recommended',
		'prettier'
	],
	parser: '@typescript-eslint/parser',
	plugins: ['@typescript-eslint'],
	ignorePatterns: ['*.cjs'],
	parserOptions: {
		sourceType: 'module',
		ecmaVersion: 2020,
		extraFileExtensions: ['.svelte']
	},
	env: {
		browser: true,
		es2017: true,
		node: true
	},
	overrides: [
		{
			files: ['*.svelte'],
			parser: 'svelte-eslint-parser',
			parserOptions: {
				parser: '@typescript-eslint/parser'
			}
		}
	]
};

1. npm create svelte@latest
2. Put the following in src/routes/+page.svelte

<script lang="ts">
	let x = new Date();
	setTimeout(() => {
		x.setFullYear(2020);
		x = x;
	}, 1000);
</script>

What did you expect to happen?

Expected no error because self-assignments are used in Svelte to trigger updates

What actually happened?

ESLint emits this error when using the default config provided with npm create svelte@latest:

  5:9  error  'x' is assigned to itself  no-self-assign

Link to GitHub Repo with Minimal Reproducible Example

https://github.com/probablykasper/eslint-svelte-self-assign-bug

Additional comments

No response

[brunocontreras]

This issue was resolved in PR #455 but was rolled back in release #457 by the bot

[ota-meshi]

thanks for letting me know.