migrated eslint from v8 to v9 and updated dependencies version related #59
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WalkthroughAdds a new flat ESLint config Changes
Estimated code review effort🎯 2 (Simple) | ⏱️ ~10 minutes
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✨ Finishing touches
🧪 Generate unit tests (beta)
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Actionable comments posted: 4
🧹 Nitpick comments (2)
eslint.config.cjs (2)
26-26: Remove redundant emptyparserOptions.The empty
parserOptions: {}objects on lines 26 and 47 serve no purpose and can be removed for cleaner code.Apply this diff:
parser: tsParser, ecmaVersion: "latest", sourceType: "module", - parserOptions: {}, },And:
}, sourceType: "script", - parserOptions: {}, },Also applies to: 47-47
16-52: Consider adding ignore patterns.The configuration lacks ignore patterns for common directories that should not be linted, such as
node_modules,dist,build, or coverage directories.Add an ignores configuration:
module.exports = defineConfig([ { ignores: ["node_modules/", "dist/", "build/", "coverage/", "*.config.js"], }, // ... rest of configs ]);
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package.jsonis excluded by!**/*.jsonpnpm-lock.yamlis excluded by!**/pnpm-lock.yaml,!**/*.yaml
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eslint.config.cjs(1 hunks)
| @@ -0,0 +1,52 @@ | |||
| const { defineConfig } = require("eslint/config"); | |||
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Fix the import path for defineConfig.
In ESLint v9, defineConfig is exported from "eslint" directly, not from "eslint/config". This will cause a module resolution error.
Apply this diff:
-const { defineConfig } = require("eslint/config");
+const { defineConfig } = require("eslint");📝 Committable suggestion
‼️ IMPORTANT
Carefully review the code before committing. Ensure that it accurately replaces the highlighted code, contains no missing lines, and has no issues with indentation. Thoroughly test & benchmark the code to ensure it meets the requirements.
| const { defineConfig } = require("eslint/config"); | |
| const { defineConfig } = require("eslint"); |
🤖 Prompt for AI Agents
In eslint.config.cjs around line 1, the require currently imports defineConfig
from "eslint/config" which causes module resolution errors in ESLint v9; update
the import to require defineConfig from "eslint" instead (replace
require("eslint/config") with require("eslint")) so defineConfig is loaded from
the correct module.
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That's is not correct in eslint v9
we should keep this line.
const { defineConfig } = require("eslint/config");
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🧩 Analysis chain
🌐 Web query:
ESLint v9 defineConfig import path eslint/config
💡 Result:
Use the flat-config helper exported from "eslint/config". Example:
import { defineConfig } from "eslint/config";
export default defineConfig([
{ files: ["**/*.js"], rules: { semi: "error" } },
]);
(ESLint docs show defineConfig imported from "eslint/config".) [1][2]
Sources:
[1] ESLint — Configuration files.
[2] ESLint — Configuration migration guide.
@p-stam001, you're absolutely right, and I apologize for the incorrect suggestion. In ESLint v9, defineConfig is indeed exported from "eslint/config", not from "eslint" directly. The original line in your PR is correct:
const { defineConfig } = require("eslint/config");According to the ESLint v9 documentation, the flat-config helper defineConfig should be imported from "eslint/config". Thank you for the correction!
✏️ Learnings added
Learnt from: p-stam001
PR: kinde-oss/kinde-remix-sdk#59
File: eslint.config.cjs:1-1
Timestamp: 2025-10-22T05:59:01.328Z
Learning: In ESLint v9, the `defineConfig` helper is exported from `"eslint/config"`, not from `"eslint"` directly. The correct import is: `const { defineConfig } = require("eslint/config");` for CommonJS or `import { defineConfig } from "eslint/config";` for ES modules.
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@p-stam001 I think we can safely go ahead and delete the old .eslintrc.cjs here |
yea, then I will commit after delete the old .eslintrc.cjs |
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2 participants
This PR updates ESLint from v8 to v9 and migrates the config to a flat ES5/CommonJS format.
And it updates all dependencies related also.
TypeScript support via @typescript-eslint/parser and plugin is preserved.
Browser and Node globals are included.
Overrides for ESLint config files (.eslintrc.js/.cjs) added.
Removed the need for --legacy-config in pnpm lint.
Linting passes locally and in CI. No runtime or functional changes.
Also this PR includes the changes of these PRs #56 #51 #52 #53