How to use graphql-extensions - 10 common examples

export async function collectCacheControlHints(
  schema: GraphQLSchema,
  source: string,
  options?: CacheControlExtensionOptions,
): Promise {
  enableGraphQLExtensions(schema);

  // Because this test helper looks at the formatted extensions, we always want
  // to include them.
  const cacheControlExtension = new CacheControlExtension({
    ...options,
    stripFormattedExtensions: false,
  });

  const response = await graphql({
    schema,
    source,
    contextValue: {
      _extensionStack: new GraphQLExtensionStack([cacheControlExtension]),
    },
  });

constructor(public readonly schema: GraphQLSchema) {
    // FIXME: This is needed to enable support for `resolveObject`, but we
    // should move that to `apollo-graphql`
    enableGraphQLExtensions(schema);
  }

function initializeExtensionStack(): GraphQLExtensionStack {
    enableGraphQLExtensions(config.schema);

    // If custom extension factories were provided, create per-request extension
    // objects.
    const extensions = config.extensions ? config.extensions.map(f => f()) : [];

    if (config.tracing) {
      extensions.push(new TracingExtension());
    }

    if (config.cacheControl) {
      cacheControlExtension = new CacheControlExtension(config.cacheControl);
      extensions.push(cacheControlExtension);
    }

    return new GraphQLExtensionStack(extensions);
  }

extensions.push(new CacheControlExtension());
  } else if (options.cacheControl) {
    extensions.push(new CacheControlExtension(options.cacheControl));
  }

  const extensionStack = new GraphQLExtensionStack(extensions);

  // We unconditionally create an extensionStack, even if there are no
  // extensions (so that we don't have to litter the rest of this function with
  // `if (extensionStack)`, but we don't instrument the schema unless there
  // actually are extensions.  We do unconditionally put the stack on the
  // context, because if some other call had extensions and the schema is
  // already instrumented, that's the only way to get a custom fieldResolver to
  // work.
  if (extensions.length > 0) {
    enableGraphQLExtensions(options.schema);
  }
  context._extensionStack = extensionStack;

  const requestDidEnd = extensionStack.requestDidStart({
    // Since the Request interfacess are not the same between node-fetch and
    // typescript's lib dom, we should limit the fields that need to be passed
    // into requestDidStart to only the ones we need, currently just the
    // headers, method, and url
    request: options.request as any,
    queryString: options.queryString,
    parsedQuery: options.parsedQuery,
    operationName: options.operationName,
    variables: options.variables,
    persistedQueryHit: options.persistedQueryHit,
    persistedQueryRegister: options.persistedQueryRegister,
    context,

extensions.push(new CacheControlExtension());
  } else if (options.cacheControl) {
    extensions.push(new CacheControlExtension(options.cacheControl));
  }

  const extensionStack = new GraphQLExtensionStack(extensions);

  // We unconditionally create an extensionStack, even if there are no
  // extensions (so that we don't have to litter the rest of this function with
  // `if (extensionStack)`, but we don't instrument the schema unless there
  // actually are extensions.  We do unconditionally put the stack on the
  // context, because if some other call had extensions and the schema is
  // already instrumented, that's the only way to get a custom fieldResolver to
  // work.
  if (extensions.length > 0) {
    enableGraphQLExtensions(options.schema);
  }
  context._extensionStack = extensionStack;

  const requestDidEnd = extensionStack.requestDidStart({
    // Since the Request interfacess are not the same between node-fetch and
    // typescript's lib dom, we should limit the fields that need to be passed
    // into requestDidStart to only the ones we need, currently just the
    // headers, method, and url
    request: options.request as any,
    queryString: options.queryString,
    parsedQuery: options.parsedQuery,
    operationName: options.operationName,
    variables: options.variables,
    persistedQueryHit: options.persistedQueryHit,
    persistedQueryRegister: options.persistedQueryRegister,
    context,

// If custom extension factories were provided, create per-request extension
  // objects.
  const extensions = options.extensions ? options.extensions.map(f => f()) : [];

  // If you're running behind an engineproxy, set these options to turn on
  // tracing and cache-control extensions.
  if (options.tracing) {
    extensions.push(new TracingExtension());
  }
  if (options.cacheControl === true) {
    extensions.push(new CacheControlExtension());
  } else if (options.cacheControl) {
    extensions.push(new CacheControlExtension(options.cacheControl));
  }

  const extensionStack = new GraphQLExtensionStack(extensions);

  // We unconditionally create an extensionStack, even if there are no
  // extensions (so that we don't have to litter the rest of this function with
  // `if (extensionStack)`, but we don't instrument the schema unless there
  // actually are extensions.  We do unconditionally put the stack on the
  // context, because if some other call had extensions and the schema is
  // already instrumented, that's the only way to get a custom fieldResolver to
  // work.
  if (extensions.length > 0) {
    enableGraphQLExtensions(options.schema);
  }
  context._extensionStack = extensionStack;

  const requestDidEnd = extensionStack.requestDidStart({
    // Since the Request interfacess are not the same between node-fetch and
    // typescript's lib dom, we should limit the fields that need to be passed

enableGraphQLExtensions(config.schema);

    // If custom extension factories were provided, create per-request extension
    // objects.
    const extensions = config.extensions ? config.extensions.map(f => f()) : [];

    if (config.tracing) {
      extensions.push(new TracingExtension());
    }

    if (config.cacheControl) {
      cacheControlExtension = new CacheControlExtension(config.cacheControl);
      extensions.push(cacheControlExtension);
    }

    return new GraphQLExtensionStack(extensions);
  }

// If custom extension factories were provided, create per-request extension
  // objects.
  const extensions = options.extensions ? options.extensions.map(f => f()) : [];

  // If you're running behind an engineproxy, set these options to turn on
  // tracing and cache-control extensions.
  if (options.tracing) {
    extensions.push(new TracingExtension());
  }
  if (options.cacheControl === true) {
    extensions.push(new CacheControlExtension());
  } else if (options.cacheControl) {
    extensions.push(new CacheControlExtension(options.cacheControl));
  }

  const extensionStack = new GraphQLExtensionStack(extensions);

  // We unconditionally create an extensionStack, even if there are no
  // extensions (so that we don't have to litter the rest of this function with
  // `if (extensionStack)`, but we don't instrument the schema unless there
  // actually are extensions.  We do unconditionally put the stack on the
  // context, because if some other call had extensions and the schema is
  // already instrumented, that's the only way to get a custom fieldResolver to
  // work.
  if (extensions.length > 0) {
    enableGraphQLExtensions(options.schema);
  }
  context._extensionStack = extensionStack;

  const requestDidEnd = extensionStack.requestDidStart({
    // Since the Request interfacess are not the same between node-fetch and
    // typescript's lib dom, we should limit the fields that need to be passed

return __generator(this, function (_a) {
            switch (_a.label) {
                case 0:
                    graphql_extensions_1.enableGraphQLExtensions(schema);
                    cacheControlExtension = new __1.CacheControlExtension(options);
                    return [4 /*yield*/, graphql_1.graphql({
                            schema: schema,
                            source: source,
                            contextValue: {
                                _extensionStack: new graphql_extensions_1.GraphQLExtensionStack([cacheControlExtension])
                            }
                        })];
                case 1:
                    response = _a.sent();
                    expect(response.errors).toBeUndefined();
                    return [2 /*return*/, cacheControlExtension.format()[1].hints];
            }
        });
    });

const context = options.context || {};
  let extensions = [];
  if (options.tracing) {
    extensions.push(TracingExtension);
  }
  if (options.cacheControl === true) {
    extensions.push(CacheControlExtension);
  } else if (options.cacheControl) {
    extensions.push(new CacheControlExtension(options.cacheControl));
  }
  const extensionStack =
    extensions.length > 0 && new GraphQLExtensionStack(extensions);

  if (extensionStack) {
    context._extensionStack = extensionStack;
    enableGraphQLExtensions(options.schema);

    extensionStack.requestDidStart();
  }

  const qry =
    typeof options.query === 'string' ? options.query : print(options.query);
  logFunction({
    action: LogAction.request,
    step: LogStep.status,
    key: 'query',
    data: qry,
  });
  logFunction({
    action: LogAction.request,
    step: LogStep.status,
    key: 'variables',