refactor: devScripts update

eslint.config.mjs

@@ -0,0 +1 @@
+export { default } from 'eslint-config-salesforce-typescript';

package.json

@@ -20,8 +20,14 @@
   "devDependencies": {
     "@oclif/plugin-command-snapshot": "^5.3.34",
     "@salesforce/cli-plugins-testkit": "^5.3.66",
-    "@salesforce/dev-scripts": "^11.0.4",
+    "@salesforce/dev-scripts": "^13.0.2",
     "@salesforce/plugin-command-reference": "^3.1.131",
+    "@types/chai": "^4.3.17",
+    "@types/mocha": "^10.0.10",
+    "@types/node": "^18",
+    "@types/sinon": "^10.0.20",
+    "eslint": "^10.4.0",
+    "eslint-config-salesforce-typescript": "^6.0.0",
     "eslint-plugin-sf-plugin": "^1.20.33",
     "nock": "^13.5.4",
     "oclif": "^4.23.30",
@@ -128,6 +134,7 @@
         "src/**/*.ts",
         "test/**/*.ts",
         "messages/**",
+        "**/eslint.config.*",
         "**/.eslint*",
         "**/tsconfig.json"
       ],

src/commands/api/request/rest.ts

@@ -128,7 +128,7 @@ export class Rest extends SfCommand<ApiResponseResult> {
     // else read from --file's body
     let body;
     if (method !== 'GET') {
-      if (flags.body && flags.body.startsWith('@')) {
+      if (flags.body?.startsWith('@')) {
         // remove the '@' and read it
         body = readFileSync(flags.body.substring(1));
       } else if (flags.body) {

test/commands/api/request/rest/rest.test.ts

@@ -240,7 +240,7 @@ describe('rest', () => {
         assert.fail('should have thrown');
       } catch (e) {
         const err = e as Error;
-        const causeStr = JSON.stringify(err.cause, Object.getOwnPropertyNames(err.cause as object));
+        const causeStr = JSON.stringify(err.cause, Object.getOwnPropertyNames(err.cause));
         expect(causeStr).to.not.include(testOrg.accessToken);
       }
     });