Package Exports

@aws-appsync/utils
@aws-appsync/utils/lib/index.js

This package does not declare an exports field, so the exports above have been automatically detected and optimized by JSPM instead. If any package subpath is missing, it is recommended to post an issue to the original package (@aws-appsync/utils) to support the "exports" field. If that is not possible, create a JSPM override to customize the exports field for this package.

Readme

Type definition for @aws-appsync/utils

This project contains utility function definitions and type definitions for working with AWS AppSync Resolvers written in JavaScript using the APPSYNC_JS runtime. This includes the util and extensions utilities. For more information on these utitlities, see the AppSync documentation.

Usage

Install the type definition by running

npm install @aws-appsync/utils

In your AppSync function code definition:

import { util, extentions } from '@aws-appsync/utils';

/**
 * Creates a new item in a DynamoDB table
 * @param ctx contextual information about the request
 */
export function request(ctx) {
  const { input: values } = ctx.arguments;
  const key = { id: util.autoId() };
  return {
    operation: 'PutItem',
    key: util.dynamodb.toMapValues(key),
    attributeValues: util.dynamodb.toMapValues(values),
  };
}

/**
 * Returns the result
 * @param ctx contextual information about the request
 */
export function response(ctx) {
  const { error, result } = ctx;
  if (error) {
    return util.appendError(error.message, error.type, result);
  }
  return ctx.result;
}