feat: Adds community scanner package (#18946)

Co-authored-by: Elias Meire <elias@meire.dev>

packages/@n8n/scan-community-package/scanner/eslint-plugin.mjs

@@ -0,0 +1,89 @@
+const restrictedGlobals = [
+	"clearInterval",
+	"clearTimeout",
+	"global",
+	"process",
+	"setInterval",
+	"setTimeout",
+];
+
+const allowedModules = [
+	"n8n-workflow",
+	"lodash",
+	"moment",
+	"p-limit",
+	"luxon",
+	"zod",
+	"crypto",
+	"node:crypto"
+];
+
+const isModuleAllowed = (modulePath) => {
+	// Allow relative paths
+	if (modulePath.startsWith("./") || modulePath.startsWith("../")) return true;
+
+	// Extract module name from imports that might contain additional path
+	const moduleName = modulePath.startsWith("@")
+		? modulePath.split("/").slice(0, 2).join("/")
+		: modulePath.split("/")[0];
+	return allowedModules.includes(moduleName);
+};
+
+/** @type {import('@types/eslint').ESLint.Plugin} */
+const plugin = {
+	rules: {
+		"no-restricted-globals": {
+			create(context) {
+				return {
+					Identifier(node) {
+						if (
+							restrictedGlobals.includes(node.name) &&
+							(!node.parent ||
+								node.parent.type !== "MemberExpression" ||
+								node.parent.object === node)
+						) {
+							context.report({
+								node,
+								message: `Use of restricted global '${node.name}' is not allowed`,
+							});
+						}
+					},
+				};
+			},
+		},
+
+		"no-restricted-imports": {
+			create(context) {
+				return {
+					ImportDeclaration(node) {
+						const modulePath = node.source.value;
+						if (!isModuleAllowed(modulePath)) {
+							context.report({
+								node,
+								message: `Import of '${modulePath}' is not allowed.`,
+							});
+						}
+					},
+
+					CallExpression(node) {
+						if (
+							node.callee.name === "require" &&
+							node.arguments.length > 0 &&
+							node.arguments[0].type === "Literal"
+						) {
+							const modulePath = node.arguments[0].value;
+							if (!isModuleAllowed(modulePath)) {
+								context.report({
+									node,
+									message: `Require of '${modulePath}' is not allowed.`,
+								});
+							}
+						}
+					},
+				};
+			},
+		},
+	},
+};
+
+export default plugin;