node-param-default-wrong-for-fixed-collection.ts

import { utils } from "../ast/utils";
import { id } from "../ast/identifiers";
import { getters } from "../ast/getters";

export default utils.createRule({
	name: utils.getRuleName(module),
	meta: {
		type: "problem",
		docs: {
			description:
				"`default` for fixed-collection-type node parameter must be an object.",
			recommended: "strict",
		},
		fixable: "code",
		schema: [],
		messages: {
			setObjectDefault: "Set an object default [autofixable]",
		},
	},
	defaultOptions: [],
	create(context) {
		return {
			ObjectExpression(node) {
				if (!id.isNodeParameter(node)) return;

				if (!id.nodeParam.isFixedCollectionType(node)) return;

				const _default = getters.nodeParam.getDefault(node);

				if (!_default) return;

				if (
					!Array.isArray(_default.value) &&
					_default.value !== null &&
					typeof _default.value !== "object"
				) {
					context.report({
						messageId: "setObjectDefault",
						node: _default.ast,
						fix: (fixer) => fixer.replaceText(_default.ast, "default: {}"),
					});
				}
			},
		};
	},
});