Linting: Prefer optional chaining

Author: henrymercer

eslint.config.mjs

@@ -131,6 +131,7 @@ export default [
       "no-sequences": "error",
       "no-shadow": "off",
       "@typescript-eslint/no-shadow": "error",
+      "@typescript-eslint/prefer-optional-chain": "error",
       "one-var": ["error", "never"],
     },
   },

lib/analyze-action.js

@@ -943,7 +943,7 @@ async function getRemoteConfig(
   );
   const pieces = format.exec(configFile);
   // 5 = 4 groups + the whole expression
-  if (pieces === null || pieces.groups === undefined || pieces.length < 5) {
+  if (pieces?.groups === undefined || pieces.length < 5) {
     throw new ConfigurationError(
       errorMessages.getConfigFileRepoFormatInvalidMessage(configFile),
     );

lib/init-action-post.js

@@ -380,10 +380,7 @@ function combineQueries(
   const result: QuerySpec[] = [];
 
   // Query settings obtained from the repository properties have the highest precedence.
-  if (
-    augmentationProperties.repoPropertyQueries &&
-    augmentationProperties.repoPropertyQueries.input
-  ) {
+  if (augmentationProperties.repoPropertyQueries?.input) {
     logger.info(
       `Found query configuration in the repository properties (${RepositoryPropertyName.EXTRA_QUERIES}): ` +
         `${augmentationProperties.repoPropertyQueries.input.map((q) => q.uses).join(", ")}`,