mtimbs

import { ClientConfiguration, DocumentClient } from 'aws-sdk/clients/dynamodb';

const config: ClientConfiguration = {
  region: process.env.AWS_REGION,
  accessKeyId: process.env.AWS_ACCESS_KEY,
  secretAccessKey: process.env.AWS_SECRET_KEY,
};

if (['test'].includes(process.env.NODE_ENV)) {
  config.endpoint = 'http://localhost:8000';

mtimbs

const env = {
  AWS_REGION: 'local',
  AWS_ACCESS_KEY: 'fake_key',
  AWS_SECRET_KEY: 'fake_secret',
};

process.env = {
  ...process.env,
  ...env,
};

mtimbs

import { v4 as uuidv4 } from 'uuid';
import { SQSRecord } from 'aws-lambda';

const now = Math.round((new Date()).getTime() / 1000).toString();


export default (params?: Partial<SQSRecord>): SQSRecord => ({
  messageId: uuidv4(),
  receiptHandle: uuidv4(),
  body: '',

mtimbs

import sqsRecordGenerator from '@tests/utilities/sqsRecordFactory';
import { SQSEvent, SQSRecord } from 'aws-lambda';

export default (events?: SQSRecord[]): SQSEvent => ({
  Records: events || [sqsRecordGenerator()],
});

mtimbs

image: docker:latest

cache:
  paths:
    - node_modules/

stages:
  - build
  - precheck
  - test

mtimbs

FROM node:12

WORKDIR /app

# install JRE for dynamo-offline (required for tests)
RUN apt-get update \
    && apt-get install -y default-jre \
    && apt-get clean \
    && rm -rf /var/lib/apt/lists/*

mtimbs

// Using Loops (and Regex)

const validateIP = ip => {
  const regex = /^\d+$/;
  const s = IP.split('.');
  if(s.length !== 4) return false;

  for(let i = 0; i < s.length; i++) {
    if(!regex.test(s[i])) return false;
    if(s[i].length > 1 && s[i].startsWith('0')) return false;

mtimbs

interface DynamoUpdateParams {
  UpdateExpression: string;
  ExpressionAttributeNames: Record<string, string>;
  ExpressionAttributeValues: Record<string, unknown>;
}

export const DynamicUpdateExpressionFromObject = (map: Record<string, unknown>): DynamoUpdateParams => {
  const ExpressionAttributeNames: Record<string, string> = Object.keys(map)
    .reduce((acc, curr) => ({ ...acc, ...{ [`#${curr}`]: curr } }), {});
  const UpdateExpression: string = Object.values(ExpressionAttributeNames)

mtimbs

function hasOwnProperty<X extends {}, Y extends PropertyKey>(obj: X, prop: Y): obj is X & Record<Y, unknown> {
  return Object.hasOwnProperty.call(obj, prop)
}

mtimbs

{
  "compilerOptions": {
    // project options
    "lib": [
      "ESNext",
      "dom"
    ], // specifies which default set of type definitions to use ("DOM", "ES6", etc)
    "outDir": "lib", // .js (as well as .d.ts, .js.map, etc.) files will be emitted into this directory.,
    "removeComments": true, // Strips all comments from TypeScript files when converting into JavaScript- you rarely read compiled code so this saves space
    "target": "ES6", // Target environment. Most modern browsers support ES6, but you may want to set it to newer or older. (defaults to ES3)