From 4507fa51843c6847cfc6aa76184ed848a0022cbf Mon Sep 17 00:00:00 2001
From: Rafael Santana <rafaelsantana3095@gmail.com>
Date: Tue, 12 Oct 2021 18:41:27 -0300
Subject: [PATCH] refactor: accept `readonly` on `suggestions`

---
 packages/experimental-utils/src/ts-eslint/Rule.ts       | 2 +-
 packages/experimental-utils/src/ts-eslint/RuleTester.ts | 4 ++--
 2 files changed, 3 insertions(+), 3 deletions(-)

diff --git a/packages/experimental-utils/src/ts-eslint/Rule.ts b/packages/experimental-utils/src/ts-eslint/Rule.ts
index 860f3779e45c..d26e6f0aff30 100644
--- a/packages/experimental-utils/src/ts-eslint/Rule.ts
+++ b/packages/experimental-utils/src/ts-eslint/Rule.ts
@@ -117,7 +117,7 @@ type ReportFixFunction = (
   fixer: RuleFixer,
 ) => null | RuleFix | readonly RuleFix[] | IterableIterator<RuleFix>;
 type ReportSuggestionArray<TMessageIds extends string> =
-  SuggestionReportDescriptor<TMessageIds>[];
+  readonly SuggestionReportDescriptor<TMessageIds>[];
 
 interface ReportDescriptorBase<TMessageIds extends string> {
   /**
diff --git a/packages/experimental-utils/src/ts-eslint/RuleTester.ts b/packages/experimental-utils/src/ts-eslint/RuleTester.ts
index 9a255b242070..651842989694 100644
--- a/packages/experimental-utils/src/ts-eslint/RuleTester.ts
+++ b/packages/experimental-utils/src/ts-eslint/RuleTester.ts
@@ -1,7 +1,7 @@
 import { RuleTester as ESLintRuleTester } from 'eslint';
 import { AST_NODE_TYPES, AST_TOKEN_TYPES } from '../ts-estree';
-import { ParserOptions } from './ParserOptions';
 import { Linter } from './Linter';
+import { ParserOptions } from './ParserOptions';
 import {
   RuleCreateFunction,
   RuleModule,
@@ -108,7 +108,7 @@ interface TestCaseError<TMessageIds extends string> {
   /**
    * Reported suggestions.
    */
-  readonly suggestions?: SuggestionOutput<TMessageIds>[] | null;
+  readonly suggestions?: readonly SuggestionOutput<TMessageIds>[] | null;
   /**
    * The type of the reported AST node.
    */