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import React, { useEffect, useLayoutEffect, useState } from 'react'
import { FlatList, SafeAreaView } from 'react-native'
import RNFS from 'react-native-fs'
import Realm from 'realm'

export function App() {
  const r = useWaitForRealm()
  const [initialized, setInitialized] = useState(false)

  useEffect(() => {

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import React, { useEffect, useLayoutEffect, useState } from 'react'
import { FlatList, SafeAreaView } from 'react-native'
import RNFS from 'react-native-fs'
import Realm from 'realm'

export function App() {
  const r = useWaitForRealm()
  const [initialized, setInitialized] = useState(false)

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import React, { useEffect } from 'react'
import { Animated, StyleSheet, TouchableOpacity, View } from 'react-native'
import {
  nodeFromRef,
  SharedElement as OriginalSharedElement,
  SharedElementNode,
  SharedElementTransition,
} from 'react-native-shared-element'
import { assert } from './utils/assert'
import { createObservable } from './utils/observable'

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/**
 * The transformer signature is based on https://github.com/cevek/ttypescript#program
 * Need to use https://github.com/microsoft/TypeScript/blob/bae0f508184280c59d2865a35efc63be362eacfa/src/compiler/factory/nodeFactory.ts
 * The goal is to conver `a!.m()` to `if (!a) { throw new Error('Attempted to use nullish value "a"'} else { a.m() }`
 * https://astexplorer.net/#/gist/9ec2af3e8c15fd2cde848941e14f566b/d9ddca954379374f98a4097d9bde4c346dac8567
 */
export default function (program) {
  const checker = program.getTypeChecker()
  return (context) => {
    return (sourceFile) => {

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// ---- START IMPORTS ----

export type AssertionExtra = (Record<string, unknown> & { name?: ErrorCode }) | ErrorCode

export function assert(predicate: any, message: string, extra: AssertionExtra = {}): asserts predicate {
  if (!predicate) {
    extra = typeof extra === 'string' ? { name: extra } : extra
    if (!('name' in extra)) {
      extra.name = ErrorCode.AssertionError
    }

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import { serve } from 'https://deno.land/std/http/server.ts'
// import { assert, ErrorCode } from './assert.ts'

export enum ErrorCode {
  RaceNotFound = 'RaceNotFound',
  RaceMemberNotFound = 'RaceMemberNotFound',
  RaceAlreadyExists = 'RaceAlreadyExists',
  RaceMemberAlreadyExists = 'RaceMemberAlreadyExists',
  AssertionError = 'AssertionError',
}

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const wrap = (obj, method) => {
  const oldMethod = obj[method]
  async function innerMethod(...args) {
    const start = Date.now()
    try {
      const ret = await oldMethod.call(obj, ...args)
      console.log(method, 'took', Date.now() - start, args[0])
      return ret
    } catch (error) {
      console.log(method, 'took', Date.now() - start)

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/** Intercepts writes to any property of an object */
export function observeProperty<T extends Object, K extends keyof T>(
  obj: T,
  property: K,
  onChanged: (val: T[K]) => void,
  customDescriptor?: PropertyDescriptor | undefined
) {
  let val = obj[property]
  Object.defineProperty(obj, property, {
    get() {

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import AWS from 'aws-sdk'
import { uuid } from 'short-uuid'
import { yesno } from 'yesno-http'

yesno.spy()

const documentClient = new AWS.DynamoDB.DocumentClient({
  apiVersion: 'latest',
})

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function area(image) {
  return image.width * image.height;
}

/** https://en.wikipedia.org/wiki/Halton_sequence */
function halton(index, base) {
  let fraction = 1;
  let result = 0;
  while (index > 0) {
    fraction /= base;