marcogrcr

shasum -a 256 lambda/lambda.zip | cut -f 1 -d ' ' | xxd -r -p | base64

marcogrcr

import type { Readable } from "node:stream";

export interface StreamJsonObjectsInput {
  /** The {@link Readable} to extract JSON objects from. */
  readonly readable: Readable;
}

export interface StreamJsonObjectsOutput<T> {
  /** The parsed JSON object. */
  readonly object: T;

marcogrcr

import { createInterface } from "node:readline";

const rl = createInterface({ input: process.stdin, terminal: false });
process.stdout.write("Please confirm with y/n: ");
for await (const line of rl) {
  if (line === "y") {
    break;
  }

  if (line === "n") {

marcogrcr

import("node:fs")
  .then(({ readFileSync, writeFileSync }) => {
    const packages = new Map();
    const output = [];
    readFileSync("yarn.lock")
      .toString()
      .split("\n")
      .forEach((l) => {
        if (l[0] === '"') {
          const [pkg] = l.split("@npm:");

marcogrcr

#!/bin/sh

# we use a heredoc for inliling the lines in the script, but they can be obtained from a file as well
# IMPORTANT: heredocs MUST use tabs, they cannot use space indentation
LINES=$(
	cat <<- EOF
		line1
		line2
		line3
	EOF

marcogrcr

import {
  afterEach,
  beforeEach,
  expect,
  it,
  MockedClass,
  MockedFunction,
  vi,
} from "vitest";

marcogrcr

AWS Lambda HTTP event comparison

AWS Lambda allows to create HTTP APIs fronted by API Gateway ([REST] and [HTTP]) and [ALB] (Application Load Balancer) endpoints. However, the input events vary depending on the endpoint. In order to write code that is compatible with all endpoint, certain differences need to be accounted for.

Methodology

The following endpoint configuration was applied to each endpoint type:

marcogrcr

#!/bin/sh

set -eu

echo 'Initializing test DynamoDB table...'

# https://docs.localstack.cloud/getting-started/installation/#docker
IMAGE=$(docker run \
  --rm -d \
  -p 127.0.0.1:4566:4566 \

marcogrcr

export interface StringBuilderOptions {
  /**
   * The initial size of the underlying buffer in bytes.
   * @default 1048576
   */
  readonly initialSize?: number;

  /**
   * The growth factor of the underlying buffer.
   * @default 20

marcogrcr

#!/bin/sh

folder_path='...'
file_types='*.json'

# See https://www.shellcheck.net/wiki/SC2044 for why we loop this way
find "$folder_path" ! -name "$(printf "*\n*")" -name "$file_types" | while IFS= read -r file
do
  echo "Processing $file..."
  # process $file