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const fns = {

}

async function attemptConnection() {
  return "Thanks!"
}

async function attemptPayment() {
  throw new Error('Crapp!!')

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Setup postgresql for a local blitz site on a mac with docker

1. Install docker

https://docs.docker.com/get-docker/

2. Install psql

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# https://plantuml.com/text-encoding
# https://github.com/dougn/python-plantuml/blob/master/plantuml.py#L64

import zlib
import base64

maketrans = bytes.maketrans

plantuml_alphabet = string.digits + string.ascii_uppercase + string.ascii_lowercase + '-_'
base64_alphabet   = string.ascii_uppercase + string.ascii_lowercase + string.digits + '+/'

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# Forked from https://gist.github.com/dyno/94ef6bb9644a88d6981d6a1a9eb70802
# https://plantuml.com/text-encoding
# https://github.com/dougn/python-plantuml/blob/master/plantuml.py#L64

import zlib
import base64
import string

plantuml_alphabet = string.digits + \
    string.ascii_uppercase + string.ascii_lowercase + '-_'

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function App() {
  const [count, setCount] = useState(0);

  // handler will be created on every render
  const handleClick = () => {
    setCount(count + 1);
  };

  return (
    <SomePureComponent count={count} onClick={handleClick} />

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# ./android/app/src/main/jni/Application.mk
APP_STL := c++_static

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# ./android/app/src/main/jni/Android.mk

# Set up paths
LOCAL_PATH := $(call my-dir)
include $(CLEAR_VARS)

# Debug mode
NDK_DEBUG=1

# Specify C++ flags

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android {
  // ...
  defaultConfig {
    // ...
    // the following configures ndk-build to build a "helloworld" module
    ndk {
      abiFilters "armeabi-v7a", "x86"
      moduleName "helloworld"
      ldLibs "log"
    }

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apply plugin: "com.android.application"

import com.android.build.OutputFile

/**
 * The react.gradle file registers a task for each build variant (e.g. bundleDebugJsAndAssets
 * and bundleReleaseJsAndAssets).
 * These basically call `react-native bundle` with the correct arguments during the Android build
 * cycle. By default, bundleDebugJsAndAssets is skipped, as in debug/dev mode we prefer to load the
 * bundle directly from the development server. Below you can see all the possible configurations

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// ./android/app/src/main/java/com/cppreactnative/helloworld/HelloWorldModule.java

package com.cppreactnative.helloworld;

import com.facebook.react.bridge.Promise;
import com.facebook.react.bridge.ReactApplicationContext;
import com.facebook.react.bridge.ReactContextBaseJavaModule;
import com.facebook.react.bridge.ReactMethod;

public class HelloWorldModule extends ReactContextBaseJavaModule {