CDKのコードにESLintを導入

.github/workflows/ci.yml

@@ -134,6 +134,7 @@ jobs:
           cache-dependency-path: cdk/package-lock.json
       - run: npm install
       - run: npm run fmt:check
+      - run: npm run lint
       - run: npm run build
       - run: npm test
       - run: npm run cdk synth

cdk/.eslintrc.json

@@ -0,0 +1,13 @@
+{
+  "env": {
+    "es2021": true
+  },
+  "extends": ["standard-with-typescript", "prettier"],
+  "overrides": [],
+  "parserOptions": {
+    "ecmaVersion": "latest",
+    "sourceType": "module",
+    "project": ["tsconfig.json"]
+  },
+  "ignorePatterns": ["cdk.out"]
+}

cdk/bin/cdk.ts

@@ -3,14 +3,15 @@ import "source-map-support/register";
 import * as cdk from "aws-cdk-lib";
 import { BeeSlackAppStack } from "../lib/bee-slack-app-stack";
 
-const stage = process.env.STAGE || "dev";
+const stage = process.env.STAGE ?? "dev";
 
 if (stage !== "dev" && stage !== "prod") {
   throw new Error("stage value is not supported.");
 }
 
 const app = new cdk.App();
 
+// eslint-disable-line no-new
 new BeeSlackAppStack(app, `BeeSlackAppStack-${stage}`, {
   stage,
   isProduction: stage === "prod",

cdk/lib/bee-slack-app-stack.ts

@@ -2,13 +2,8 @@ import { LambdaIntegration, RestApi } from "aws-cdk-lib/aws-apigateway";
 import { AttributeType, Table } from "aws-cdk-lib/aws-dynamodb";
 import { Runtime, Function, Code, Handler } from "aws-cdk-lib/aws-lambda";
 import { LambdaDestination } from "aws-cdk-lib/aws-logs-destinations";
-import {
-  StackProps,
-  Stack,
-  RemovalPolicy,
-  SecretValue,
-  Duration,
-} from "aws-cdk-lib";
+import { type StackProps } from "aws-cdk-lib";
+import { Stack, RemovalPolicy, SecretValue, Duration } from "aws-cdk-lib";
 import { Secret } from "aws-cdk-lib/aws-secretsmanager";
 import { Construct } from "constructs";
 import { join } from "path";