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graphql-express error handler

Blue-eyed Butterfly answered on September 15, 2023 Popularity 1/10 Helpfulness 1/10

answer graphql-express error handler

graphql-express error handler

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customErrorHandler = (err, req, res, next) => {
 const error = formatError(err);
  const { message, locations, path, extensions } = error;

  let statusCode = 500;
  let errorType = 'INTERNAL_SERVER_ERROR';
  let errorMessage = 'Internal server error. Please try again later.';

  if (extensions && extensions.exception) {
    const { name } = extensions.exception;

    if (name === 'ValidationError') {
      statusCode = 400;
      errorType = 'VALIDATION_ERROR';
      errorMessage = 'Invalid input. Please provide valid data for the following fields:';
    }
  }

  const response = {
    errorType,
    message: errorMessage,
    locations,
    path,
  };

  res.status(statusCode).json(response);
};

const app = express();
app.use('/graphql', graphqlHTTP({
  schema,
  rootValue,
  customErrorHandler,
  graphiql: true
}));

app.listen(4000, () => {
  console.log('Running a GraphQL API server at localhost:4000/graphql');
});

Popularity 1/10 Helpfulness 1/10 Language javascript

Source: inigo.io

Tags: handler javascript

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Contributed on Sep 15 2023

Blue-eyed Butterfly

0 Answers Avg Quality 2/10

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