Fix gql response interpretation - Githubissues

acmcsufoss / lc-dailies

Daily Leetcode challenges for members to practice their algorithms.

https://acmcsuf.com/lc-dailies

MIT License

2 stars 0 forks source link

Fix gql response interpretation #49

Closed EthanThatOneKid closed 9 months ago

EthanThatOneKid commented 9 months ago

Fixed error

TypeError: Cannot read properties of null (reading 'map')

Revision

      .then((json) =>
        json.data.recentAcSubmissionList
-          .map((
+          ?.map((
            acSubmission: {
              id: string;
              title: string;
@@ -154,7 +132,7 @@ export class LCClient {
            name: acSubmission.titleSlug,
            title: acSubmission.title,
            timestamp: acSubmission.timestamp,
-          }))
+          })) ?? []
      );

The use of the safe navigation operator (?.) ensures that if json.data.recentAcSubmissionList is null or undefined, the code won't attempt to call the map function on it, avoiding the error.
The nullish coalescing operator (??) is used to provide an empty array as the default value when json.data.recentAcSubmissionList is null or undefined.

Resolves #48.