Response delay

You can control how long an operation takes to respond either statically, through the third settings argument, or dynamically from a resolver with setDelay. Both hold the response for the given number of milliseconds before it is sent.

Delay As A Setting

For a fixed delay on the whole handler, set delay in settings:

graphql.query('GetUsers', { data: { users: [] } }, { delay: 500 });

Every GetUsers request takes at least 500ms to respond. This is the simplest way to describe a consistently slow operation.

Delay From A Resolver

When the delay depends on the request, call setDelay inside a resolver. It returns a promise, so await it before responding.

graphql.query('GetUsers', async ({ setDelay }) => {
  await setDelay(500);
  return { data: { users: [] } };
});