chore: Enforce extraneous dependencies in Oxlint (no-changelog) (#39281)

scripts/lint-parity/OXLINT_MIGRATION_BLOCKERS.md

@@ -1,6 +1,6 @@
 # Oxlint migration blockers
 
-Last reviewed: 2026-09-18  
+Last reviewed: 2026-09-22
 Oxlint version: 1.78.0
 
 This file is the working backlog for the ESLint to Oxlint migration. It focuses on rules that block an Oxlint-only lint command for many packages. `oxlint-gap.json` is the machine-readable source of truth for shared-layer parity.
@@ -21,7 +21,6 @@ These rules come from the shared base or backend layers. Resolve these first bec
 
 | Priority | Rule | Blocker | Suggested next action |
 | --- | --- | --- | --- |
-| P0 | `import-x/no-extraneous-dependencies` | Oxlint reserves the `import-x` plugin name. The JS plugin bridge has not been validated with an alias. | Test `eslint-plugin-import-x` under an alias. If that is unstable, implement a native package-manifest check. |
 | P1 | `no-restricted-syntax` | Oxlint has no AST-selector rule. The base layer uses it for the raw-enum restriction. | Add a purpose-built syntax rule for each active selector. Start with the raw-enum rule. |
 | P1 | `typescript/consistent-type-imports` | Oxlint does not honor the `emitDecoratorMetadata` exception. Its fixer can remove imports that DI needs at runtime. | Wait for upstream support or add a tested shim that skips decorated files. Do not enable the current fixer. |
 | P1 | `typescript/prefer-optional-chain` | The native nursery rule changes guarded undeclared globals incorrectly. | Re-test after the rule leaves nursery or after the upstream fixer issue is resolved. |
@@ -150,13 +149,12 @@ The main exceptions are:
 
 ## Work order
 
-1. Resolve or isolate `import-x/no-extraneous-dependencies`.
-2. Replace active `no-restricted-syntax` selectors with focused rules.
-3. Resolve decorator-safe `consistent-type-imports` behavior.
-4. Audit and reduce `naming-convention` package overrides.
-5. Re-test the two nursery rules.
-6. Run a JS-plugin bridge spike for `n8n-nodes-base`.
-7. Keep a template-only ESLint pass for Vue until native template support exists.
+1. Replace active `no-restricted-syntax` selectors with focused rules.
+2. Resolve decorator-safe `consistent-type-imports` behavior.
+3. Audit and reduce `naming-convention` package overrides.
+4. Re-test the two nursery rules.
+5. Run a JS-plugin bridge spike for `n8n-nodes-base`.
+6. Keep a template-only ESLint pass for Vue until native template support exists.
 
 ## Validation commands
 

scripts/lint-parity/oxlint-gap.json

@@ -21,13 +21,6 @@
 		"impact": "Near zero.",
 		"replacement": "No action unless non-module source becomes supported."
 	},
-	"import-x/no-extraneous-dependencies": {
-		"layer": "base",
-		"native": null,
-		"reason": "`import-x` is a reserved plugin name in oxlint, so `eslint-plugin-import-x` cannot load as a jsPlugin under its own name (`Plugin name 'import-x' is reserved`). An alias would permanently change the rule ids, and these rules are the slowest in ESLint and unvalidated through the alpha bridge.",
-		"impact": "A package can import a dependency it does not declare. Left out of the spike deliberately.",
-		"replacement": "Validate eslint-plugin-import-x with an alias, or replace the dependency check with a native package-manifest rule."
-	},
 	"typescript/prefer-optional-chain": {
 		"layer": "base",
 		"native": "typescript/prefer-optional-chain",

scripts/lint-parity/oxlint-parity.mjs

@@ -61,6 +61,7 @@ const SCOPE_BY_NAMESPACE = {
 /** Namespaces oxlint can only reach through a jsPlugin, so ids stay as ESLint wrote them. */
 const JS_PLUGIN_NAMESPACES = new Set([
 	'@stylistic',
+	'import-x-alias',
 	'lodash',
 	'unused-imports',
 	'n8n-local-rules',
@@ -77,13 +78,17 @@ function oxlintRuleIds() {
 		encoding: 'utf8',
 		maxBuffer: 32 * 1024 * 1024,
 	});
-	const start = out.stdout.indexOf('[');
+	const arrayLine = out.stdout.lastIndexOf('\n[');
+	const start = arrayLine === -1 ? out.stdout.indexOf('[') : arrayLine + 1;
 	if (start === -1) throw new Error(`oxlint --rules failed: ${(out.stderr || out.stdout).trim()}`);
 	return new Set(JSON.parse(out.stdout.slice(start)).map((r) => `${r.scope}/${r.value}`));
 }
 
 /** ESLint id -> the oxlint id we would write in a config, or null if oxlint has no such rule. */
 function toOxlintId(eslintId, native) {
+	if (eslintId === 'import-x/no-extraneous-dependencies') {
+		return 'import-x-alias/no-extraneous-dependencies';
+	}
 	const [ns, name] = splitId(eslintId);
 	if (JS_PLUGIN_NAMESPACES.has(ns)) return eslintId;
 	if (ns === '') return native.has(`eslint/${name}`) ? name : null;