mhart’s gists

mhart / index.js

Created July 24, 2019 21:04

Log errors to Sentry from a Cloudflare Worker

	// Get the key from the "DSN" at: https://sentry.io/settings/<org>/projects/<project>/keys/
	// The "DSN" will be in the form: https://<SENTRY_KEY>@sentry.io/<SENTRY_PROJECT_ID>
	// eg, https://[email protected]/123456
	const SENTRY_PROJECT_ID = '123456'
	const SENTRY_KEY = '0000aaaa1111bbbb2222cccc3333dddd'

	// Useful if you have multiple apps within a project – not necessary, only used in TAGS and SERVER_NAME below
	const APP = 'my-app'

	// https://docs.sentry.io/error-reporting/configuration/?platform=javascript#environment

mhart / removed.bin.txt

Last active March 6, 2020 09:49

Binaries and libraries removed from the Lambda 2019-05-14 update (refers to all runtimes except nodejs10.x which is opt-in to a completely new OS)

-/bin/dash
-/bin/dnsdomainname
-/bin/domainname
-/bin/dumpkeys
-/bin/hostname
-/bin/ipcalc
-/bin/iptables-xml
-/bin/kbd_mode
-/bin/loadkeys
-/bin/mountpoint

mhart / bootstrap

Created December 4, 2018 02:15

Out-of-the-box AWS Lambda custom runtime (implemented in bash!)

	#!/bin/sh

	set -euo pipefail

	# Handler format: <script_name>.<function_name>
	# The script file <script_name>.sh must be located in
	# the same directory as the bootstrap executable.
	source $(dirname "$0")/"$(echo $_HANDLER \| cut -d. -f1).sh"

	while true

mhart / steps.sh

Last active September 11, 2023 11:01

Get SCL (and GCC 7) working on Amazon Linux 2017.03

	yum install -y iso-codes # Needed for scl-utils-build

	curl -O http://vault.centos.org/6.5/SCL/x86_64/scl-utils/scl-utils-20120927-11.el6.centos.alt.x86_64.rpm
	curl -O http://vault.centos.org/6.5/SCL/x86_64/scl-utils/scl-utils-build-20120927-11.el6.centos.alt.x86_64.rpm
	curl -O http://mirror.centos.org/centos/6/extras/x86_64/Packages/centos-release-scl-rh-2-3.el6.centos.noarch.rpm
	curl -O http://mirror.centos.org/centos/6/extras/x86_64/Packages/centos-release-scl-7-3.el6.centos.noarch.rpm

	rpm -Uvh *.rpm # Had to run this twice? Get an error first time, maybe Docker related
	rm *.rpm

mhart / import.js

Last active April 9, 2017 15:37

	var api = foo
	api.foo = 1
	api.bar = 2
	export default api

	Object.assign(foo, someThings)
	export default foo

	array.forEach(item => {
	bar[item.key] = item.value

mhart / activityStore.js

Created April 7, 2017 16:05

One way to manage React global state with EventEmitters

	const EventEmitter = require('events')

	class ActivityStore extends EventEmitter {
	constructor() {
	this.state = 'stopped' // Whether you need this or not...?
	}
	start() {
	this.state = 'started'
	this.emit('started', this.state)
	}

mhart / index.html

Last active March 2, 2017 16:07

	<!doctype html>
	<html lang="en">

	<!-- Example HTML file for AWS Proxy Resource tutorial at: https://aws.amazon.com/blogs/compute/authorizing-access-through-a-proxy-resource-to-amazon-api-gateway-and-aws-lambda-using-amazon-cognito-user-pools/ -->
	<!-- Fill out your UserPoolId, ClientId and apiGatewayEndpoint in JS further below -->
	<!-- Then serve locally with a static file server, such as `python -m SimpleHTTPServer` and open http://localhost:8000 -->

	<head>
	<meta charset="utf-8">

mhart / .block

Last active September 30, 2016 00:33 — forked from mbostock/.block

Blocks

license: gpl-3.0

mhart / splitStream.js

Last active September 12, 2016 00:29

Split stream for Node.js >= 4.x

	var stream = require('stream')

	module.exports = split

	function split(delim, emitTrailingIfEmpty) {
	delim = delim \|\| new Buffer('\n')
	var trailing, delimLen = delim.length
	return new stream.Transform({
	readableObjectMode: true,
	transform: function(chunk, enc, cb) {

mhart / dynalite_test.js

Created January 15, 2016 20:53 — forked from Hiteshm01/dynalite_test.js

	var AWS = require('aws-sdk')

	var dynamo = new AWS.DynamoDB({endpoint: 'http://localhost:4567'})

	var params = {
	AttributeDefinitions: [ // required
	{
	AttributeName: 'test_id', // required
	AttributeType: 'N' // required
	}, {

Michael Hart mhart