deploy: leporello-js/app@a6e3f1b36f

docs/examples/animated_fractal_tree/animated_fractal_tree.js

@@ -2,34 +2,33 @@
 // Author: Sarah Bricault
 
 // Canvas setup
-const canvas = document.createElement('canvas')
+const canvas = document.createElement("canvas")
 canvas.width = 700
 canvas.height = 700
 document.body.appendChild(canvas)
-const ctx = canvas.getContext('2d')
+const ctx = canvas.getContext("2d")
 ctx.translate(canvas.width / 2, canvas.height)
 
 // Draw a tree
-await fractalTreeBasic({totalIterations: 10, basicLength: 10, rotate: 25})
+await fractalTreeBasic({ totalIterations: 10, basicLength: 10, rotate: 25 })
 
 function sleep() {
   return new Promise(resolve => setTimeout(resolve, 3))
 }
 
-async function fractalTreeBasic({totalIterations, basicLength, rotate}) {
+async function fractalTreeBasic({ totalIterations, basicLength, rotate }) {
-
   // Draw the tree trunk
   const trunkLength = basicLength * 2 * Math.pow(1.2, totalIterations + 1)
   const width = Math.pow(totalIterations, 0.6)
 
   ctx.beginPath()
   ctx.moveTo(0, 0)
-  ctx.lineTo(0, - trunkLength)
+  ctx.lineTo(0, -trunkLength)
   ctx.lineWidth = width
-  ctx.strokeStyle = 'black'
+  ctx.strokeStyle = "black"
   ctx.stroke()
 
-  await drawBranch(90, [0, - trunkLength], totalIterations + 1)
+  await drawBranch(90, [0, -trunkLength], totalIterations + 1)
 
   async function drawBranch(angle, startPoint, iterations) {
     const len = basicLength * Math.pow(1.2, iterations)
@@ -38,7 +37,7 @@ async function fractalTreeBasic({totalIterations, basicLength, rotate}) {
 
     const red = Math.floor(255 - (iterations / totalIterations) * 255)
     const green = 0
-    const blue = Math.floor( 255 - (iterations / totalIterations) * 255)
+    const blue = Math.floor(255 - (iterations / totalIterations) * 255)
     const color = `rgb(${red}, ${green}, ${blue})`
 
     const x1 = startPoint[0]
@@ -47,7 +46,7 @@ async function fractalTreeBasic({totalIterations, basicLength, rotate}) {
     const y2 = y1 - len * Math.sin((angle * Math.PI) / 180)
     const x2 = x1 + len * Math.cos((angle * Math.PI) / 180)
 
-    console.log('draw branch', x1, y1, x2, y2)
+    console.log("draw branch", x1, y1, x2, y2)
 
     ctx.beginPath()
     ctx.moveTo(x1, y1)

docs/examples/canvas_animation_bubbles/bubbles.js

@@ -1,8 +1,8 @@
-// Original source: 
+// Original source:
 // https://www.freecodecamp.org/news/how-to-create-animated-bubbles-with-html5-canvas-and-javascript/
 
-const canvas = document.createElement('canvas')
+const canvas = document.createElement("canvas")
-canvas.style.backgroundColor = '#00b4ff'
+canvas.style.backgroundColor = "#00b4ff"
 document.body.appendChild(canvas)
 canvas.width = window.innerWidth
 canvas.height = window.innerHeight
@@ -10,9 +10,9 @@ canvas.height = window.innerHeight
 const context = canvas.getContext("2d")
 
 context.font = "30px Arial"
-context.textAlign = 'center'
+context.textAlign = "center"
-context.fillStyle = 'white'
+context.fillStyle = "white"
-context.fillText('Click to spawn bubbles', canvas.width/2, canvas.height/2)
+context.fillText("Click to spawn bubbles", canvas.width / 2, canvas.height / 2)
 
 let circles = []
 
@@ -28,7 +28,7 @@ function draw(circle) {
     1,
     circle.x + 0.5,
     circle.y + 0.5,
-    circle.radius
+    circle.radius,
   )
 
   gradient.addColorStop(0.3, "rgba(255, 255, 255, 0.3)")
@@ -39,20 +39,20 @@ function draw(circle) {
 }
 
 function move(circle, timeDelta) {
-  circle.x = circle.x + timeDelta*circle.dx
+  circle.x = circle.x + timeDelta * circle.dx
-  circle.y = circle.y - timeDelta*circle.dy
+  circle.y = circle.y - timeDelta * circle.dy
 }
 
 let intervalId
 
 function startAnimation() {
-  if(intervalId == null) {
+  if (intervalId == null) {
     intervalId = setInterval(animate, 20)
   }
 }
 
 function stopAnimation() {
-  if(intervalId != null) {
+  if (intervalId != null) {
     clearInterval(intervalId)
     intervalId = null
   }
@@ -65,31 +65,31 @@ const animate = () => {
   const timeDelta = prevFrameTime == null ? 0 : now - prevFrameTime
   prevFrameTime = now
 
-  if(circles.length == 0) {
+  if (circles.length == 0) {
     return
   }
 
-	context.clearRect(0, 0, canvas.width, canvas.height)
+  context.clearRect(0, 0, canvas.width, canvas.height)
 
-	circles.forEach(circle => {
+  circles.forEach(circle => {
-		move(circle, timeDelta)
+    move(circle, timeDelta)
-		draw(circle)
+    draw(circle)
-	})
+  })
 }
 
-const createCircles = (event) => {
+const createCircles = event => {
   startAnimation()
 
-	circles = circles.concat(Array.from({length: 50}, () => (
+  circles = circles.concat(
-     {
+    Array.from({ length: 50 }, () => ({
       x: event.pageX,
       y: event.pageY,
       radius: Math.random() * 50,
       dx: Math.random() * 0.3,
       dy: Math.random() * 0.7,
       hue: 200,
-    }
+    })),
-  )))
+  )
 }
 
 canvas.addEventListener("click", createCircles)

docs/examples/domevents.js

@@ -1,34 +1,40 @@
-window.addEventListener('load', () => {
+window.addEventListener("load", () => {
-  const text = document.createElement('input')
+  const text = document.createElement("input")
 
-  const checkbox = document.createElement('input')
+  const checkbox = document.createElement("input")
-  checkbox.setAttribute('type', 'checkbox')
+  checkbox.setAttribute("type", "checkbox")
 
-  const radio = document.createElement('input')
+  const radio = document.createElement("input")
-  radio.setAttribute('type', 'radio')
+  radio.setAttribute("type", "radio")
 
-  const range = document.createElement('input')
+  const range = document.createElement("input")
-  range.setAttribute('type', 'range')
+  range.setAttribute("type", "range")
 
-  const select = document.createElement('select')
+  const select = document.createElement("select")
-  Array.from({length: 5}, (_, i) => i).forEach(i => {
+  Array.from({ length: 5 }, (_, i) => i).forEach(i => {
-    const option = document.createElement('option')
+    const option = document.createElement("option")
-    option.setAttribute('value', i)
+    option.setAttribute("value", i)
     option.innerText = i
     select.appendChild(option)
   })
 
-  const div = document.createElement('div')
+  const div = document.createElement("div")
+
+  const elements = { text, checkbox, range, select, radio, div }
 
-  const elements = { text, checkbox, range, select, radio, div}
-  
   Object.entries(elements).forEach(([name, el]) => {
-    document.body.appendChild(el);
+    document.body.appendChild(el)
-    ['click', 'input', 'change'].forEach(type => {
+    ;["click", "input", "change"].forEach(type => {
       el.addEventListener(type, e => {
-        const row = document.createElement('div')
+        const row = document.createElement("div")
         div.appendChild(row)
-        row.innerText = [name, type, e.target.value, e.target.checked, e.target.selectedIndex].join(', ')
+        row.innerText = [
+          name,
+          type,
+          e.target.value,
+          e.target.checked,
+          e.target.selectedIndex,
+        ].join(", ")
       })
     })
   })

docs/examples/ethers/block_by_timestamp.js

@@ -1,21 +1,25 @@
-import {ethers} from 'https://unpkg.com/ethers/dist/ethers.js'
+import { ethers } from "ethers"
 
-const URL = 'https://rpc.ankr.com/eth'
+const URL = "https://eth-mainnet.public.blastapi.io"
 
 const provider = await ethers.getDefaultProvider(URL)
 
-const latest = await provider.getBlock('latest')
+const latest = await provider.getBlock("latest")
 
 /*
   Find ethereum block by timestamp using binary search
 */
-async function getBlockNumberByTimestamp(timestamp, low = 0, high = latest.number) {
+async function getBlockNumberByTimestamp(
-  if(low + 1 == high) {
+  timestamp,
+  low = 0,
+  high = latest.number,
+) {
+  if (low + 1 == high) {
     return low
   } else {
     const mid = Math.floor((low + high) / 2)
     const midBlock = await provider.getBlock(mid)
-    if(midBlock.timestamp > timestamp) {
+    if (midBlock.timestamp > timestamp) {
       return getBlockNumberByTimestamp(timestamp, low, mid)
     } else {
       return getBlockNumberByTimestamp(timestamp, mid, high)
@@ -23,6 +27,6 @@ async function getBlockNumberByTimestamp(timestamp, low = 0, high = latest.numbe
   }
 }
 
-const timestamp = new Date('2019-06-01').getTime()/1000
+const timestamp = new Date("2019-06-01").getTime() / 1000
 const blockNumber = await getBlockNumberByTimestamp(timestamp)
 const block = await provider.getBlock(blockNumber)

docs/examples/ethers/index.js

@@ -1,15 +1,15 @@
-import {ethers} from 'https://unpkg.com/ethers@5.7.2/dist/ethers.esm.js'
+import { ethers } from "ethers"
 
-const URL = 'https://rpc.ankr.com/eth_goerli'
+const URL = "https://eth-mainnet.public.blastapi.io"
 
 const p = ethers.getDefaultProvider(URL)
 
 const latest = await p.getBlock()
 
-const txs = await Promise.all(latest.transactions.map(t => 
+const txs = await Promise.all(
-  p.getTransactionReceipt(t)
+  latest.transactions.map(t => p.getTransactionReceipt(t)),
-))
+)
 
 const totalGas = txs
   .filter(tx => tx != null)
-  .reduce((gas,tx) => gas.add(tx.gasUsed), ethers.BigNumber.from(0))
+  .reduce((gas, tx) => gas.add(tx.gasUsed), ethers.BigNumber.from(0))

docs/examples/fibonacci/index.js

@@ -1,7 +1,7 @@
 // Fibonacci numbers
 
 function fib(n) {
-  if(n == 0 || n == 1) {
+  if (n == 0 || n == 1) {
     return n
   } else {
     return fib(n - 1) + fib(n - 2)

docs/examples/fractal_tree/fractal_tree.js

@@ -2,30 +2,29 @@
 // Author: Sarah Bricault
 
 // Canvas setup
-const canvas = document.createElement('canvas')
+const canvas = document.createElement("canvas")
 canvas.width = 700
 canvas.height = 700
 document.body.appendChild(canvas)
-const ctx = canvas.getContext('2d')
+const ctx = canvas.getContext("2d")
 ctx.translate(canvas.width / 2, canvas.height)
 
 // Draw a tree
-fractalTreeBasic({totalIterations: 10, basicLength: 10, rotate: 25})
+fractalTreeBasic({ totalIterations: 10, basicLength: 10, rotate: 25 })
-
-function fractalTreeBasic({totalIterations, basicLength, rotate}) {
 
+function fractalTreeBasic({ totalIterations, basicLength, rotate }) {
   // Draw the tree trunk
   const trunkLength = basicLength * 2 * Math.pow(1.2, totalIterations + 1)
   const width = Math.pow(totalIterations, 0.6)
 
   ctx.beginPath()
   ctx.moveTo(0, 0)
-  ctx.lineTo(0, - trunkLength)
+  ctx.lineTo(0, -trunkLength)
   ctx.lineWidth = width
-  ctx.strokeStyle = 'black'
+  ctx.strokeStyle = "black"
   ctx.stroke()
 
-  drawBranch(90, [0, - trunkLength], totalIterations + 1)
+  drawBranch(90, [0, -trunkLength], totalIterations + 1)
 
   function drawBranch(angle, startPoint, iterations) {
     const len = basicLength * Math.pow(1.2, iterations)
@@ -34,7 +33,7 @@ function fractalTreeBasic({totalIterations, basicLength, rotate}) {
 
     const red = Math.floor(255 - (iterations / totalIterations) * 255)
     const green = 0
-    const blue = Math.floor( 255 - (iterations / totalIterations) * 255)
+    const blue = Math.floor(255 - (iterations / totalIterations) * 255)
     const color = `rgb(${red}, ${green}, ${blue})`
 
     const x1 = startPoint[0]
@@ -43,7 +42,7 @@ function fractalTreeBasic({totalIterations, basicLength, rotate}) {
     const y2 = y1 - len * Math.sin((angle * Math.PI) / 180)
     const x2 = x1 + len * Math.cos((angle * Math.PI) / 180)
 
-    console.log('draw branch', x1, y1, x2, y2)
+    console.log("draw branch", x1, y1, x2, y2)
 
     ctx.beginPath()
     ctx.moveTo(x1, y1)

docs/examples/github_api/index.js

@@ -1,7 +1,8 @@
-import _ from 'https://unpkg.com/lodash-es'
+import _ from "lodash-es"
 
 async function getPopularLanguages() {
-  const url = 'https://api.github.com/search/repositories?q=stars:%3E1&sort=stars'
+  const url =
+    "https://api.github.com/search/repositories?q=stars:%3E1&sort=stars"
   const resp = await fetch(url)
   const repos = await resp.json()
   return _(repos.items)
@@ -9,7 +10,7 @@ async function getPopularLanguages() {
     .filter(l => l != null)
     .countBy()
     .toPairs()
-    .orderBy(([lang, useCount]) => useCount, 'desc')
+    .orderBy(([lang, useCount]) => useCount, "desc")
     .map(([lang]) => lang)
     .value()
 }

docs/examples/plot/index.js

@@ -1,6 +1,6 @@
-import _ from 'https://unpkg.com/lodash-es'
+import _ from "lodash-es"
 
-const url = 'https://api.github.com/search/repositories?q=stars:%3E1&sort=stars'
+const url = "https://api.github.com/search/repositories?q=stars:%3E1&sort=stars"
 const resp = await fetch(url)
 const repos = await resp.json()
 const langs = _(repos.items)
@@ -8,43 +8,18 @@ const langs = _(repos.items)
   .filter(l => l != null)
   .countBy()
   .toPairs()
-  .map(([language, count]) => ({language, count}))
+  .map(([language, count]) => ({ language, count }))
   .value()
 
-import {barY} from "https://cdn.jsdelivr.net/npm/@observablehq/plot@0.6/+esm";
+import { barY } from "@observablehq/plot"
 
 /*
   Move the cursor to the following line and see the plot displayed alongside the code
 */
 
-barY(langs, {x: "language", y: "count", sort: {x: "y", reverse: true}, fill: 'purple'})
+barY(langs, {
-  .plot()
+  x: "language",
-
+  y: "count",
-
+  sort: { x: "y", reverse: true },
-
+  fill: "purple",
-
+}).plot()
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-

docs/examples/preact/index.js

@@ -1,38 +1,44 @@
 const fib = n => {
-  if(n == 0) {
+  if (n == 0) {
     return 0
   }
-  if(n == 1) {
+  if (n == 1) {
     return 1
   }
   return fib(n - 1) + fib(n - 2)
 }
-    
-/* external */
-import {h, render} from 'https://unpkg.com/preact?module';
 
 /* external */
-import {Stateful} from './stateful.js'
+import { h, render } from "preact"
+
+/* external */
+import { Stateful } from "./stateful.js"
 
 const Fibonacci = Stateful({
-  getInitialState: () => ({index: 0}),
+  getInitialState: () => ({ index: 0 }),
 
   handlers: {
-    prev: ({index}, event) => ({index: index - 1}),
+    prev: ({ index }, event) => ({ index: index - 1 }),
-    next: ({index}, event) => ({index: index + 1}),
+    next: ({ index }, event) => ({ index: index + 1 }),
   },
-  
+
-  render: (props, state, handlers) => 
+  render: (props, state, handlers) =>
-    h('div', null,
+    h(
-      h('h1', null, 
+      "div",
-        'nth Fibonacci number is ', 
+      null,
+      h(
+        "h1",
+        null,
+        "nth Fibonacci number is ",
         fib(state.index),
-        ' for n = ', 
+        " for n = ",
-        state.index
+        state.index,
       ),
-      h('button', {onClick: handlers.prev}, 'Previous'), ' ',
+      h("button", { onClick: handlers.prev }, "Previous"),
-      h('button', {onClick: handlers.next}, 'Next'), ' ',
+      " ",
-    )
+      h("button", { onClick: handlers.next }, "Next"),
+      " ",
+    ),
 })
 
 render(h(Fibonacci), globalThis.document.body)

docs/examples/preact/stateful.js

@@ -1,18 +1,15 @@
-import {Component} from 'https://unpkg.com/preact?module';
+import { Component } from "preact"
-
-export const Stateful = ({getInitialState, handlers, render}) => {
 
+export const Stateful = ({ getInitialState, handlers, render }) => {
   return class extends Component {
-
     constructor() {
       super()
       this.compState = getInitialState()
       this.handlers = Object.fromEntries(
-        Object
+        Object.entries(handlers).map(([name, h]) => [
-          .entries(handlers)
+          name,
-          .map(([name, h]) => 
+          this.makeHandler(h),
-            [name, this.makeHandler(h)]
+        ]),
-          )
       )
     }
 
@@ -27,5 +24,4 @@ export const Stateful = ({getInitialState, handlers, render}) => {
       return render(this.props, this.compState, this.handlers)
     }
   }
-
 }

docs/examples/todos-preact/index.js

@@ -2,7 +2,7 @@
   Example of a TODO app built using the Preact library
 */
 
-import React from 'https://esm.sh/preact/compat'
+import React from "preact/compat"
 
 // Core
 
@@ -13,7 +13,7 @@ let state
 if (globalThis.leporello) {
   // Retrieve initial state from Leporello storage
   // See: https://github.com/leporello-js/leporello-js?tab=readme-ov-file#saving-state-between-page-reloads
-  state = globalThis.leporello.storage.get('state')
+  state = globalThis.leporello.storage.get("state")
 }
 
 /*
@@ -21,14 +21,16 @@ if (globalThis.leporello) {
   This helper function wraps such a function so that its result updates the global state
   and can be used as an event handler.
 */
-const handler = fn => (...args) => {
+const handler =
-  state = fn(state, ...args)
+  fn =>
-  if (globalThis.leporello) {
+  (...args) => {
-    // Persist state to Leporello storage to restore it after page reloads
+    state = fn(state, ...args)
-    globalThis.leporello.storage.set('state', state)
+    if (globalThis.leporello) {
+      // Persist state to Leporello storage to restore it after page reloads
+      globalThis.leporello.storage.set("state", state)
+    }
+    render()
   }
-  render()
-}
 
 // Higher-order function that injects the current state into a component
 const connect = comp => props => comp(props, state)
@@ -39,12 +41,12 @@ const render = () => React.render(<App />, document.body)
 if (state == null) {
   state = {
     todos: [],
-    text: '',
+    text: "",
-    filter: 'ALL',
+    filter: "ALL",
   }
 }
 
-window.addEventListener('load', render)
+window.addEventListener("load", render)
 
 // Components
 
@@ -68,10 +70,10 @@ const Footer = () => (
 const FilterLink = connect(({ filter, children }, state) => {
   const disabled = state.filter == filter
   return (
-    <button 
+    <button
-      onClick={handler(changeFilter.bind(null, filter))} 
+      onClick={handler(changeFilter.bind(null, filter))}
-      disabled={disabled} 
+      disabled={disabled}
-      style={{ marginLeft: '4px' }}
+      style={{ marginLeft: "4px" }}
     >
       {children}
     </button>
@@ -87,9 +89,9 @@ const TodoList = connect((_, state) => (
 ))
 
 const Todo = ({ todo }) => (
-  <li 
+  <li
-    onClick={handler(toggleTodo.bind(null, todo))} 
+    onClick={handler(toggleTodo.bind(null, todo))}
-    style={{ textDecoration: todo.completed ? 'line-through' : 'none' }}
+    style={{ textDecoration: todo.completed ? "line-through" : "none" }}
   >
     {todo.text}
   </li>
@@ -99,11 +101,7 @@ const AddTodo = connect((_, state) => {
   return (
     <div>
       <form onSubmit={handler(createTodo)}>
-        <input 
+        <input value={state.text} onChange={handler(changeText)} autoFocus />
-          value={state.text} 
-          onChange={handler(changeText)} 
-          autoFocus
-        />
         <button type="submit">Add Todo</button>
       </form>
     </div>
@@ -114,14 +112,14 @@ const AddTodo = connect((_, state) => {
 
 // Returns a filtered list of TODOs based on the current filter state
 function visibleTodos(state) {
-  if (state.filter == 'ALL') {
+  if (state.filter == "ALL") {
     return state.todos
-  } else if (state.filter == 'ACTIVE') {
+  } else if (state.filter == "ACTIVE") {
     return state.todos.filter(t => !t.completed)
-  } else if (state.filter == 'COMPLETED') {
+  } else if (state.filter == "COMPLETED") {
     return state.todos.filter(t => t.completed)
   } else {
-    throw new Error('Unknown filter')
+    throw new Error("Unknown filter")
   }
 }
 
@@ -146,18 +144,18 @@ function createTodo(state, e) {
   }
 
   return {
-    ...state, 
+    ...state,
     todos: [...state.todos, { text: state.text }],
-    text: '',
+    text: "",
   }
 }
 
 // Toggles the completion state of a TODO item
 function toggleTodo(todo, state) {
   return {
-    ...state, 
+    ...state,
     todos: state.todos.map(t =>
-      t == todo ? { ...todo, completed: !todo.completed } : t
+      t == todo ? { ...todo, completed: !todo.completed } : t,
-    )
+    ),
   }
 }

docs/examples/todos-redux/public/index.html

@@ -1,18 +1,20 @@
 <!doctype html>
 <html lang="en">
   <head>
-    <meta charset="utf-8">
+    <meta charset="utf-8" />
-    <meta name="viewport" content="width=device-width, initial-scale=1">
+    <meta name="viewport" content="width=device-width, initial-scale=1" />
     <title>Redux Todos Example</title>
 
-    <script src='https://unpkg.com/react/umd/react.development.js'></script>
+    <script src="https://unpkg.com/react/umd/react.development.js"></script>
-    <script src='https://unpkg.com/react-dom/umd/react-dom.development.js'></script>
+    <script src="https://unpkg.com/react-dom/umd/react-dom.development.js"></script>
-    <script src='https://unpkg.com/redux'></script>
+    <script src="https://unpkg.com/redux"></script>
-    <script src='https://unpkg.com/react-redux'></script>
+    <script src="https://unpkg.com/react-redux"></script>
 
-    <script type='module'>
+    <script type="module">
-      if(new URLSearchParams(window.location.search).get('leporello') == null) {
+      if (
-        await import('../src/index.js');
+        new URLSearchParams(window.location.search).get("leporello") == null
+      ) {
+        await import("../src/index.js")
       }
     </script>
   </head>

docs/examples/todos-redux/src/actions/index.js

@@ -6,23 +6,23 @@ const nextTodoId = new Function(`
 `)()
 
 export const addTodo = text => ({
-  type: 'ADD_TODO',
+  type: "ADD_TODO",
   id: nextTodoId(),
-  text
+  text,
 })
 
 export const setVisibilityFilter = filter => ({
-  type: 'SET_VISIBILITY_FILTER',
+  type: "SET_VISIBILITY_FILTER",
-  filter
+  filter,
 })
 
 export const toggleTodo = id => ({
-  type: 'TOGGLE_TODO',
+  type: "TOGGLE_TODO",
-  id
+  id,
 })
 
 export const VisibilityFilters = {
-  SHOW_ALL: 'SHOW_ALL',
+  SHOW_ALL: "SHOW_ALL",
-  SHOW_COMPLETED: 'SHOW_COMPLETED',
+  SHOW_COMPLETED: "SHOW_COMPLETED",
-  SHOW_ACTIVE: 'SHOW_ACTIVE'
+  SHOW_ACTIVE: "SHOW_ACTIVE",
 }

docs/examples/todos-redux/src/components/App.js

@@ -1,15 +1,9 @@
-import Footer from './Footer.js'
+import Footer from "./Footer.js"
-import AddTodo from '../containers/AddTodo.js'
+import AddTodo from "../containers/AddTodo.js"
-import VisibleTodoList from '../containers/VisibleTodoList.js'
+import VisibleTodoList from "../containers/VisibleTodoList.js"
 
 const h = React.createElement
 
-const App = () => (
+const App = () => h("div", null, h(AddTodo), h(VisibleTodoList), h(Footer))
-  h('div', null,
-    h(AddTodo),
-    h(VisibleTodoList),
-    h(Footer),
-  )
-)
 
 export default App

docs/examples/todos-redux/src/components/Footer.js

@@ -1,15 +1,16 @@
-import FilterLink from '../containers/FilterLink.js'
+import FilterLink from "../containers/FilterLink.js"
-import { VisibilityFilters } from '../actions/index.js'
+import { VisibilityFilters } from "../actions/index.js"
 
 const h = React.createElement
 
-const Footer = () => (
+const Footer = () =>
-  h('div', null,
+  h(
-    h('span', null, 'Show: '),
+    "div",
-    h(FilterLink, {filter: VisibilityFilters.SHOW_ALL}, 'All'),
+    null,
-    h(FilterLink, {filter: VisibilityFilters.SHOW_ACTIVE}, 'Active'),
+    h("span", null, "Show: "),
-    h(FilterLink, {filter: VisibilityFilters.SHOW_COMPLETED}, 'Completed'),
+    h(FilterLink, { filter: VisibilityFilters.SHOW_ALL }, "All"),
+    h(FilterLink, { filter: VisibilityFilters.SHOW_ACTIVE }, "Active"),
+    h(FilterLink, { filter: VisibilityFilters.SHOW_COMPLETED }, "Completed"),
   )
-)
 
 export default Footer

docs/examples/todos-redux/src/components/Link.js

@@ -1,13 +1,16 @@
 const h = React.createElement
 
-const Link = ({ active, children, onClick }) => (
+const Link = ({ active, children, onClick }) =>
-    h('button', {
+  h(
-       onClick,
+    "button",
-       disabled: active,
+    {
-       style:{
+      onClick,
-           marginLeft: '4px',
+      disabled: active,
-       }
+      style: {
-    }, children)
+        marginLeft: "4px",
-)
+      },
+    },
+    children,
+  )
 
 export default Link

docs/examples/todos-redux/src/components/Todo.js

@@ -1,12 +1,15 @@
 const h = React.createElement
 
-const Todo = ({ onClick, completed, text }) => (
+const Todo = ({ onClick, completed, text }) =>
-  h('li', {
+  h(
-    onClick,
+    "li",
-    style: {
+    {
-      textDecoration: completed ? 'line-through' : 'none'
+      onClick,
+      style: {
+        textDecoration: completed ? "line-through" : "none",
+      },
     },
-  }, text)
+    text,
-)
+  )
 
 export default Todo

docs/examples/todos-redux/src/components/TodoList.js

@@ -1,17 +1,18 @@
-import Todo from './Todo.js'
+import Todo from "./Todo.js"
 
 const h = React.createElement
 
-const TodoList = ({ todos, toggleTodo }) => (
+const TodoList = ({ todos, toggleTodo }) =>
-  h('ul', null,
+  h(
+    "ul",
+    null,
     todos.map(todo =>
       h(Todo, {
         key: todo.id,
         ...todo,
         onClick: () => toggleTodo(todo.id),
-      })
+      }),
-    )
+    ),
   )
-)
 
 export default TodoList

docs/examples/todos-redux/src/containers/AddTodo.js

@@ -1,25 +1,27 @@
-import { addTodo } from '../actions/index.js'
+import { addTodo } from "../actions/index.js"
 
 const h = React.createElement
 
 const AddTodo = ({ dispatch }) => {
   const inputref = {}
 
-  return (
+  return h(
-    h('div', null,
+    "div",
-      h('form', { 
+    null,
+    h(
+      "form",
+      {
         onSubmit: e => {
           e.preventDefault()
           if (inputref.input.value.trim()) {
             dispatch(addTodo(inputref.input.value))
-            Object.assign(inputref.input, {value: ''})
+            Object.assign(inputref.input, { value: "" })
           }
-        }
+        },
       },
-        h('input', {ref: input => Object.assign(inputref, {input})}),
+      h("input", { ref: input => Object.assign(inputref, { input }) }),
-        h('button', {type: 'submit'}, 'Add Todo')
+      h("button", { type: "submit" }, "Add Todo"),
-      )
+    ),
-    )
   )
 }
 

docs/examples/todos-redux/src/containers/FilterLink.js

@@ -1,15 +1,12 @@
-import { setVisibilityFilter } from '../actions/index.js'
+import { setVisibilityFilter } from "../actions/index.js"
-import Link from '../components/Link.js'
+import Link from "../components/Link.js"
 
 const mapStateToProps = (state, ownProps) => ({
-  active: ownProps.filter === state.visibilityFilter
+  active: ownProps.filter === state.visibilityFilter,
 })
 
 const mapDispatchToProps = (dispatch, ownProps) => ({
-  onClick: () => dispatch(setVisibilityFilter(ownProps.filter))
+  onClick: () => dispatch(setVisibilityFilter(ownProps.filter)),
 })
 
-export default ReactRedux.connect(
+export default ReactRedux.connect(mapStateToProps, mapDispatchToProps)(Link)
-  mapStateToProps,
-  mapDispatchToProps
-)(Link)

docs/examples/todos-redux/src/containers/VisibleTodoList.js

@@ -1,28 +1,25 @@
-import { toggleTodo } from '../actions/index.js'
+import { toggleTodo } from "../actions/index.js"
-import TodoList from '../components/TodoList.js'
+import TodoList from "../components/TodoList.js"
-import { VisibilityFilters } from '../actions/index.js'
+import { VisibilityFilters } from "../actions/index.js"
 
 const getVisibleTodos = (todos, filter) => {
-  if(filter == VisibilityFilters.SHOW_ALL) {
+  if (filter == VisibilityFilters.SHOW_ALL) {
     return todos
-  } else if(filter == VisibilityFilters.SHOW_COMPLETED) {
+  } else if (filter == VisibilityFilters.SHOW_COMPLETED) {
     return todos.filter(t => t.completed)
-  } else if(filter == VisibilityFilters.SHOW_ACTIVE) {
+  } else if (filter == VisibilityFilters.SHOW_ACTIVE) {
     return todos.filter(t => !t.completed)
   } else {
-    throw new Error('Unknown filter: ' + filter)
+    throw new Error("Unknown filter: " + filter)
   }
 }
 
 const mapStateToProps = state => ({
-  todos: getVisibleTodos(state.todos, state.visibilityFilter)
+  todos: getVisibleTodos(state.todos, state.visibilityFilter),
 })
 
 const mapDispatchToProps = dispatch => ({
-  toggleTodo: id => dispatch(toggleTodo(id))
+  toggleTodo: id => dispatch(toggleTodo(id)),
 })
 
-export default ReactRedux.connect(
+export default ReactRedux.connect(mapStateToProps, mapDispatchToProps)(TodoList)
-  mapStateToProps,
-  mapDispatchToProps
-)(TodoList)

docs/examples/todos-redux/src/index.js

@@ -1,11 +1,11 @@
-import App from './components/App.js'
+import App from "./components/App.js"
-import rootReducer from './reducers/index.js'
+import rootReducer from "./reducers/index.js"
 
 const h = React.createElement
 
 const store = Redux.createStore(rootReducer)
 
 ReactDOM.render(
-  h(ReactRedux.Provider, {store}, h(App)),
+  h(ReactRedux.Provider, { store }, h(App)),
-  document.getElementById('root')
+  document.getElementById("root"),
 )

docs/examples/todos-redux/src/reducers/index.js

@@ -1,7 +1,7 @@
-import todos from './todos.js'
+import todos from "./todos.js"
-import visibilityFilter from './visibilityFilter.js'
+import visibilityFilter from "./visibilityFilter.js"
 
 export default Redux.combineReducers({
   todos,
-  visibilityFilter
+  visibilityFilter,
 })

docs/examples/todos-redux/src/reducers/todos.js

@@ -1,18 +1,16 @@
 const todos = (state = [], action) => {
-  if(action.type == 'ADD_TODO') {
+  if (action.type == "ADD_TODO") {
     return [
       ...state,
       {
         id: action.id,
         text: action.text,
-        completed: false
+        completed: false,
-      }
+      },
     ]
-  } else if(action.type == 'TOGGLE_TODO') {
+  } else if (action.type == "TOGGLE_TODO") {
     return state.map(todo =>
-      (todo.id === action.id)
+      todo.id === action.id ? { ...todo, completed: !todo.completed } : todo,
-        ? {...todo, completed: !todo.completed}
-        : todo
     )
   } else {
     return state

docs/examples/todos-redux/src/reducers/visibilityFilter.js

@@ -1,7 +1,7 @@
-import { VisibilityFilters } from '../actions/index.js'
+import { VisibilityFilters } from "../actions/index.js"
 
 const visibilityFilter = (state = VisibilityFilters.SHOW_ALL, action) => {
-  if(action.type == 'SET_VISIBILITY_FILTER') {
+  if (action.type == "SET_VISIBILITY_FILTER") {
     return action.filter
   } else {
     return state

index.html

@@ -5,6 +5,8 @@
     <meta http-equiv="Content-Type" content="text/html; charset=utf-8"/>
     <title>Leporello.js</title>
 
+    <script type='module' src='./src/ts_libs.js' async></script>
+
     <script src='ace/ace.js'></script>
     <script src='ace/keybinding-vim.js'></script>
     <script src='ace/ext-language_tools.js'></script>
@@ -20,526 +22,7 @@
 
     <script type='module' src="./src/launch.js"></script>
 
-    <style>
+    <link rel=stylesheet href='./styles.css'></link>
-
-      :root {
-        --shadow_color: rgb(171 200 214);
-        --active_color: rgb(173, 228, 253);
-        --error-color: #ff000024;
-        --warn-color: #fff6d5;
-      }
-
-      html, body, .app {
-        height: 100%;
-      }
-
-      body {
-        margin: 0px;
-      }
-
-      .spinner {
-        display: inline-block;
-        height: 0.8em;
-        width: 0.8em;
-        min-width: 0.8em;
-        border-radius: 50%;
-        border-top: none !important;
-        border: 2px solid;
-        animation: rotate 0.6s linear infinite;
-      }
-      @keyframes rotate {
-        0% {
-          transform: rotate(0deg);
-        }
-        100% {
-          transform: rotate(360deg);
-        }
-      }
-
-      .app {
-        /* same as ace editor */
-        font-family: Monaco, Menlo, "Ubuntu Mono", Consolas, source-code-pro, monospace;
-      }
-
-      .app::backdrop {
-        background-color: white;
-      }
-
-      .root {
-        height: 100%;
-        display: grid;
-        grid-template-areas:
-          "code code"
-          "bottom files"
-          "statusbar statusbar";
-        grid-template-columns: 70% 30%;
-        grid-template-rows: auto 1fr 2.5em;
-      }
-
-      .editor_container, .bottom, .files_container, .statusbar {
-        box-shadow: 1px 1px 3px 0px var(--shadow_color);
-      }
-
-      .editor_container, .bottom, .statusbar, .files_container {
-        margin: 8px;
-      }
-
-      .editor_container:focus-within, 
-      .bottom:focus-within,
-      .files_container:focus-within,
-      dialog {
-        outline: none;
-        box-shadow: 1px 1px 6px 3px var(--shadow_color);
-      }
-
-      .tab_content:focus-within, .problems_container:focus-within {
-        outline: none;
-      }
-
-      .editor_container {
-        height: 55vh;
-        resize: vertical;
-        position: relative;
-        grid-area: code;
-        font-size: 16px;
-      }
-
-      /* ace markers */
-
-      .selection {
-        position: absolute;
-        background-color: #ff00ff;
-        z-index: 1; /* make it on top of evaluated_ok and evaluated_error */
-      }
-
-      .evaluated_ok {
-        position: absolute;
-        background-color: rgb(225, 244, 253);
-      }
-      .evaluated_error {
-        position: absolute;
-        background-color: var(--error-color);
-      }
-      .error-code {
-        /*
-          TODO: make underline like in all editors
-        */
-        position: absolute;
-        border-bottom: 4px solid red;
-      }
-
-      /* end of ace markers */
-
-      .eval_error {
-        padding: 0em 1em;
-        color: red;
-      }
-
-      /* Tabs */
-
-      .tabs {
-        display: flex;
-        padding-bottom: 0.5em;
-      }
-
-      .tabs > .tab {
-        margin-right: 1em;
-        padding: 0.3em 1em;
-        display: flex;
-        align-items: center;
-      }
-
-      .tabs > .tab.active {
-        background-color: rgb(225, 244, 253);
-      }
-
-      /* debugger */
-
-      .bottom {
-        grid-area: bottom;
-        overflow: auto;
-        display: grid;
-      }
-
-      .debugger {
-        display: flex;
-        flex-direction: column;
-      }
-
-      .debugger_wrapper {
-        display: flex;
-        flex: 1;
-        flex-direction: column;
-        overflow: auto;
-      }
-
-      .debugger, .problems_container {
-        padding: 5px;
-        overflow: auto;
-      }
-
-      .logs, .io_trace {
-        padding-left: 1em;
-      }
-
-      .logs .log {
-        cursor: pointer;
-      }
-
-      .logs .log.active {
-        background-color: var(--active_color) !important;
-      }
-
-      .logs .log.error {
-        background-color: var(--error-color);
-        color: black !important; /* override red color that is set for calltree */
-        &.native {
-          color: grey !important;
-        }
-      }
-
-      .logs .log.warn {
-        background-color: var(--warn-color);
-      }
-
-      .tab_content {
-        flex: 1;
-        overflow: auto;
-      }
-
-      .callnode {
-        /* This makes every callnode be the size of the the longest one, so
-         * every callnode is clickable anywhere in the calltree view, and
-         * background for active callnodes is as wide as the entire container.
-         * Useful when scrolling very wide call trees */
-        min-width: fit-content;
-        margin-left: 1em;
-      }
-      .callnode .active {
-        background-color: var(--active_color);
-      }
-      .call_el {
-        /*
-          Make active callnode background start from the left of the calltree
-          view
-        */
-        margin-left: -1000vw;
-        padding-left: 1000vw;
-        width: 100%;
-
-        cursor: pointer;
-        display: inline-block;
-      }
-      .call_el .expand_icon, .call_el .expand_icon_placeholder {
-        padding-left: 5px;
-        padding-right: 2px;
-      }
-
-      .call_header {
-        white-space: nowrap;
-      }
-      .call_header.error {
-        color: red;
-      }
-      .call_header.error.native {
-        color: red;
-      }
-      .call_header.native {
-        font-style: italic;
-        color: grey;
-      }
-
-      .call_header .loop_step {
-        color: grey;
-        border-radius: 5px;
-        padding: 1px 5px;
-        font-size: 0.9em;
-        margin-right: 0.3em;
-      }
-
-      /* problems view */
-      .problem a {
-        color: red;
-      }
-
-      /* files */
-
-      .files_container {
-        overflow: auto;
-        grid-area: files;
-        display: flex;
-        flex-direction: column;
-      }
-
-      .allow_file_access {
-        display: flex;
-        flex-direction: column;
-      }
-      .allow_file_access .subtitle {
-        font-size: 0.8em;
-      }
-
-      .files {
-        overflow: auto;
-        padding: 5px;
-      }
-
-      .files .file {
-        margin-left: 1em;
-      }
-
-      .files > .file {
-        margin-left: 0em !important;
-      }
-
-      .files .file_title {
-        display: flex;
-      }
-
-      .files .file_title.active {
-        background-color: var(--active_color);
-      }
-
-      .files .file_title .select_entrypoint {
-        margin-left: auto;
-        width: 40px;
-        text-align: center;
-      }
-
-      .files .file_title .icon {
-        display: inline-block;
-        margin-right: 5px;
-        width: 1em;
-      }
-
-      .file_actions {
-        position: relative;
-        display: flex;
-        flex-direction: row;
-        justify-content: flex-start;
-        align-items: center;
-        padding: 5px;
-        background-color: rgb(225 244 253 / 80%);
-      }
-
-      .file_actions .file_action {
-        margin-right: 2em;
-      }
-
-      .file_actions .select_entrypoint_title {
-        width: 40px;
-        position: absolute; 
-        right: 7px;
-        font-size: 0.8em;
-        text-align: center;
-      }
-
-      /* value_explorer */
-
-      .embed_value_explorer_container.is_not_dom_el {
-        height: 0px;
-      }
-
-      .embed_value_explorer_container.is_dom_el {
-        padding: 1em;
-      }
-
-      .embed_value_explorer_wrapper {
-        /* preserve wrapper from getting clicks for code line left to it */
-        pointer-events: none; 
-      }
-
-      .embed_value_explorer_container.is_not_dom_el .embed_value_explorer_wrapper {
-        margin-left: 1em;
-      }
-
-      .embed_value_explorer_content {
-        pointer-events: initial;
-        white-space: pre;
-        max-width: fit-content;
-        background-color: white;
-        box-shadow: 1px 2px 9px -1px var(--shadow_color);
-      }
-
-      .embed_value_explorer_content:focus {
-        outline: none;
-        box-shadow: 1px 2px 11px 1px var(--shadow_color);
-      }
-
-      .embed_value_explorer_content > .value_explorer_node {
-        margin-left: 0 !important;
-      }
-
-      .embed_value_explorer_control {
-        display: block;
-        margin-bottom: 1em;
-        font-size: 0.9em;
-      }
-
-      .value_explorer_node {
-        margin-left: 1em;
-      }
-
-      .value_explorer_header {
-        display: inline-block;
-        padding-right: 1em;
-        cursor: pointer;
-      }
-
-      .value_explorer_header .expand_icon {
-        padding: 5px;
-      }
-
-      .value_explorer_header.active {
-        background-color: rgb(148, 227, 191);
-      }
-      
-      .value_explorer_key {
-        color: rgb(150, 0, 128);
-        font-weight: bold;
-      }
-
-      /* status */
-
-      .statusbar {
-        margin-bottom: 0px;
-        grid-area: statusbar;
-        display: flex;
-        flex-direction: row;
-        align-items: center;
-        justify-content: flex-start;
-      }
-
-      .statusbar .spinner {
-        margin-right: 0.5em;
-      }
-
-      .status, .current_file {
-        font-size: 1.5em;
-      }
-      .status {
-        color: red;
-      }
-
-      .statusbar_action { 
-        margin-right: 2em;
-      }
-
-      .statusbar_action.first { 
-        margin-left: auto;
-      }
-
-      .open_app_window_button {
-        position: relative;
-      }
-      .open_app_window_tooltip {
-        padding: 1em;
-        position: absolute;
-        margin-bottom: 20px;
-        bottom: 100%;
-        border: none;
-        font-size: 1.7em;
-        background-color: rgb(120 206 247);
-        border-radius: 21px;
-        transform: scale(0);
-        transition: transform 0.3s;
-      }
-      .open_app_window_tooltip.on {
-        transform: scale(1);
-      }
-      .open_app_window_tooltip:after {
-        content: '';
-        width: 0;
-        height: 0;
-        border-left: 20px solid transparent;
-        border-right: 20px solid transparent;
-        border-top: 20px solid rgb(120 206 247);
-        position: absolute;
-        bottom: -20px;
-        left: 50%;
-        transform: translate(-50%);
-      }
-
-      .options {
-        padding: 5px;
-      }
-      .options > * {
-        margin: 5px;
-      }
-
-      .show_help, .github {
-        margin: 0em 0.5em;
-      }
-
-      .share_button, .upload_button {
-        border: none;
-        color: white;
-        background: rgb(23 166 236);
-      }
-
-      .share_button {
-        font-size: 1.2em;
-        margin-left: 1em;
-        margin-right: 0.5em;
-      }
-      
-      .share_button[disabled] {
-        background: grey;
-      }
-
-
-      .share_dialog input, .share_dialog button {
-        font-size: 1.2em;
-      }
-
-      .share_dialog button {
-        padding: 5px;
-        height: 2em;
-      }
-
-      dialog {
-        border: none;
-      }
-
-      dialog::backdrop {
-        background-color: rgb(225 244 253 / 80%);
-      }
-
-      .help_dialog[open] {
-        display: flex;
-        flex-direction: column;
-        justify-content: center;
-        align-items: center;
-        padding: 0;
-        min-width: 70%;
-        min-height: 70%;
-        background-color: white;
-      }
-
-      .help {
-        padding: 2em;
-        border-spacing: 5px;
-      }
-
-      .help th {
-        padding: 0.5em;
-      }
-
-      .help th.key {
-        width: 5em;
-      }
-
-      .help td.key {
-        background-color: rgb(225, 244, 253, 0.5);
-        border-radius: 10px;
-        text-align: center;
-      }
-
-      .help_dialog form {
-        margin-bottom: 1em;
-      }
-
-    </style>
 
   </head>
 

src/ts_libs.js

@@ -0,0 +1,114 @@
+const lib_names = [
+  'lib.d.ts',
+  'lib.decorators.d.ts',
+  'lib.decorators.legacy.d.ts',
+  'lib.dom.asynciterable.d.ts',
+  'lib.dom.d.ts',
+  'lib.dom.iterable.d.ts',
+  'lib.es2015.collection.d.ts',
+  'lib.es2015.core.d.ts',
+  'lib.es2015.d.ts',
+  'lib.es2015.generator.d.ts',
+  'lib.es2015.iterable.d.ts',
+  'lib.es2015.promise.d.ts',
+  'lib.es2015.proxy.d.ts',
+  'lib.es2015.reflect.d.ts',
+  'lib.es2015.symbol.d.ts',
+  'lib.es2015.symbol.wellknown.d.ts',
+  'lib.es2016.array.include.d.ts',
+  'lib.es2016.d.ts',
+  'lib.es2016.full.d.ts',
+  'lib.es2016.intl.d.ts',
+  'lib.es2017.arraybuffer.d.ts',
+  'lib.es2017.d.ts',
+  'lib.es2017.date.d.ts',
+  'lib.es2017.full.d.ts',
+  'lib.es2017.intl.d.ts',
+  'lib.es2017.object.d.ts',
+  'lib.es2017.sharedmemory.d.ts',
+  'lib.es2017.string.d.ts',
+  'lib.es2017.typedarrays.d.ts',
+  'lib.es2018.asyncgenerator.d.ts',
+  'lib.es2018.asynciterable.d.ts',
+  'lib.es2018.d.ts',
+  'lib.es2018.full.d.ts',
+  'lib.es2018.intl.d.ts',
+  'lib.es2018.promise.d.ts',
+  'lib.es2018.regexp.d.ts',
+  'lib.es2019.array.d.ts',
+  'lib.es2019.d.ts',
+  'lib.es2019.full.d.ts',
+  'lib.es2019.intl.d.ts',
+  'lib.es2019.object.d.ts',
+  'lib.es2019.string.d.ts',
+  'lib.es2019.symbol.d.ts',
+  'lib.es2020.bigint.d.ts',
+  'lib.es2020.d.ts',
+  'lib.es2020.date.d.ts',
+  'lib.es2020.full.d.ts',
+  'lib.es2020.intl.d.ts',
+  'lib.es2020.number.d.ts',
+  'lib.es2020.promise.d.ts',
+  'lib.es2020.sharedmemory.d.ts',
+  'lib.es2020.string.d.ts',
+  'lib.es2020.symbol.wellknown.d.ts',
+  'lib.es2021.d.ts',
+  'lib.es2021.full.d.ts',
+  'lib.es2021.intl.d.ts',
+  'lib.es2021.promise.d.ts',
+  'lib.es2021.string.d.ts',
+  'lib.es2021.weakref.d.ts',
+  'lib.es2022.array.d.ts',
+  'lib.es2022.d.ts',
+  'lib.es2022.error.d.ts',
+  'lib.es2022.full.d.ts',
+  'lib.es2022.intl.d.ts',
+  'lib.es2022.object.d.ts',
+  'lib.es2022.regexp.d.ts',
+  'lib.es2022.string.d.ts',
+  'lib.es2023.array.d.ts',
+  'lib.es2023.collection.d.ts',
+  'lib.es2023.d.ts',
+  'lib.es2023.full.d.ts',
+  'lib.es2023.intl.d.ts',
+  'lib.es2024.arraybuffer.d.ts',
+  'lib.es2024.collection.d.ts',
+  'lib.es2024.d.ts',
+  'lib.es2024.full.d.ts',
+  'lib.es2024.object.d.ts',
+  'lib.es2024.promise.d.ts',
+  'lib.es2024.regexp.d.ts',
+  'lib.es2024.sharedmemory.d.ts',
+  'lib.es2024.string.d.ts',
+  'lib.es5.d.ts',
+  'lib.es6.d.ts',
+  'lib.esnext.array.d.ts',
+  'lib.esnext.collection.d.ts',
+  'lib.esnext.d.ts',
+  'lib.esnext.decorators.d.ts',
+  'lib.esnext.disposable.d.ts',
+  'lib.esnext.full.d.ts',
+  'lib.esnext.intl.d.ts',
+  'lib.esnext.iterator.d.ts',
+]
+
+export let ts_libs_promise = load_ts_libs()
+
+async function load_ts_libs() {
+  if(globalThis.process == null) {
+    return Object.fromEntries(await Promise.all(
+      lib_names.map(name => 
+        fetch('typescript/' + name).then(r => r.text()).then(text => ([name, text]))
+      )
+    ))
+  } else {
+    const fs = await import('fs')
+    return Object.fromEntries(
+      lib_names.map(name => 
+        [name, fs.readFileSync('typescript/' + name, 'ascii')]
+      )
+    )
+  }
+}
+
+

styles.css

@@ -0,0 +1,548 @@
+:root {
+  --shadow_color: rgb(171 200 214);
+  --active_color: rgb(173, 228, 253);
+  --error-color: #ff000024;
+  --warn-color: #fff6d5;
+}
+
+html, body, .app {
+  height: 100%;
+  background-color: #f4f4f4;
+}
+
+body {
+  margin: 0px;
+}
+
+.spinner {
+  display: inline-block;
+  height: 0.8em;
+  width: 0.8em;
+  min-width: 0.8em;
+  border-radius: 50%;
+  border-top: none !important;
+  border: 2px solid;
+  animation: rotate 0.6s linear infinite;
+}
+@keyframes rotate {
+  0% {
+    transform: rotate(0deg);
+  }
+  100% {
+    transform: rotate(360deg);
+  }
+}
+
+.app {
+  /* same as ace editor */
+  font-family: Monaco, Menlo, "Ubuntu Mono", Consolas, source-code-pro, monospace;
+}
+
+.app::backdrop {
+  background-color: white;
+}
+
+.root {
+  height: 100%;
+  display: grid;
+  grid-template-areas:
+    "code"
+    "bottom"
+    "statusbar";
+  grid-template-rows: auto 1fr 2.5em;
+}
+
+.editor_container, .bottom, .statusbar {
+  box-shadow: 1px 1px 3px 0px var(--shadow_color);
+  background-color: white;
+}
+
+.editor_container, .bottom, .statusbar {
+  margin: 8px;
+}
+
+.editor_container:focus-within, 
+.bottom:focus-within,
+dialog {
+  outline: none;
+  box-shadow: 1px 1px 6px 3px var(--shadow_color);
+}
+
+.tab_content:focus-within, .problems_container:focus-within {
+  outline: none;
+}
+
+.editor_container {
+  height: 55vh;
+  resize: vertical;
+  position: relative;
+  grid-area: code;
+  font-size: 16px;
+}
+
+/* ace markers */
+
+.selection {
+  position: absolute;
+  background-color: #ff00ff;
+  z-index: 1; /* make it on top of evaluated_ok and evaluated_error */
+}
+
+.evaluated_ok {
+  position: absolute;
+  background-color: rgb(225, 244, 253);
+}
+.evaluated_error {
+  position: absolute;
+  background-color: var(--error-color);
+}
+.error-code {
+  /*
+    TODO: make underline like in all editors
+  */
+  position: absolute;
+  border-bottom: 4px solid red;
+}
+
+/* end of ace markers */
+
+.eval_error {
+  padding: 0em 1em;
+  color: red;
+}
+
+/* Tabs */
+
+.tabs {
+  font-family: system-ui;
+  display: flex;
+  padding-bottom: 0.5em;
+}
+
+.tabs > .tab {
+  margin-right: 1em;
+  padding: 0.3em 1em;
+  display: flex;
+  align-items: center;
+}
+
+.tabs > .tab.active {
+  background-color: rgb(225, 244, 253);
+}
+
+/* debugger */
+
+.bottom {
+  grid-area: bottom;
+  overflow: auto;
+  display: grid;
+}
+
+.debugger {
+  display: flex;
+  flex-direction: column;
+}
+
+.debugger_wrapper {
+  display: flex;
+  flex: 1;
+  flex-direction: column;
+  overflow: auto;
+}
+
+.debugger, .problems_container {
+  padding: 5px;
+  overflow: auto;
+}
+
+.logs, .io_trace {
+  padding-left: 1em;
+}
+
+.logs .log {
+  cursor: pointer;
+}
+
+.logs .log.active {
+  background-color: var(--active_color) !important;
+}
+
+.logs .log.error {
+  background-color: var(--error-color);
+  color: black !important; /* override red color that is set for calltree */
+  &.native {
+    color: grey !important;
+  }
+}
+
+.logs .log.warn {
+  background-color: var(--warn-color);
+}
+
+.tab_content {
+  flex: 1;
+  overflow: auto;
+}
+
+.callnode {
+  /* This makes every callnode be the size of the the longest one, so
+   * every callnode is clickable anywhere in the calltree view, and
+   * background for active callnodes is as wide as the entire container.
+   * Useful when scrolling very wide call trees */
+  min-width: fit-content;
+  margin-left: 1em;
+}
+.callnode .active {
+  background-color: var(--active_color);
+}
+.call_el {
+  /*
+    Make active callnode background start from the left of the calltree
+    view
+  */
+  margin-left: -1000vw;
+  padding-left: 1000vw;
+  width: 100%;
+
+  cursor: pointer;
+  display: inline-block;
+}
+.call_el .expand_icon, .call_el .expand_icon_placeholder {
+  padding-left: 5px;
+  padding-right: 2px;
+}
+
+.call_header {
+  white-space: nowrap;
+}
+.call_header.error {
+  color: red;
+}
+.call_header.error.native {
+  color: red;
+}
+.call_header.native {
+  font-style: italic;
+  color: grey;
+}
+
+.call_header .loop_step {
+  color: grey;
+  font-size: 0.9em;
+  margin-right: 0.3em;
+}
+
+/* io trace */
+.io_trace .event {
+  border-radius: 1em;
+  line-height: 2em;
+  padding: 0.1em 0.5em;
+  background-color: var(--active_color);
+}
+
+/* problems view */
+.problem a {
+  color: red;
+}
+
+/* files */
+
+.files_container {
+  overflow: auto;
+  display: flex;
+  flex-direction: column;
+}
+
+.allow_file_access {
+  display: flex;
+  flex-direction: column;
+}
+.allow_file_access .subtitle {
+  font-size: 0.8em;
+}
+
+.files {
+  overflow: auto;
+  padding: 5px;
+}
+
+.files .file {
+  margin-left: 1em;
+}
+
+.files > .file {
+  margin-left: 0em !important;
+}
+
+.files .file_title {
+  display: flex;
+  margin-left: -100vw;
+  padding-left: 100vw;
+}
+
+.files .file_title.active {
+  background-color: var(--active_color);
+}
+
+.files .file_title .select_entrypoint {
+  margin-left: auto;
+  width: 3em;
+  margin-right: 0.7em;
+  text-align: center;
+}
+
+.files .file_title .icon {
+  display: inline-block;
+  margin-right: 5px;
+  width: 1em;
+}
+
+.file_actions {
+  font-family: system-ui;
+  display: flex;
+  flex-direction: row;
+  justify-content: flex-start;
+  align-items: center;
+  padding: 1em;
+  background-color: rgb(225 244 253 / 80%);
+}
+
+.file_actions .file_action {
+  margin-right: 2em;
+}
+
+.file_actions .select_entrypoint_title {
+  width: 3em;
+  text-align: center;
+}
+
+/* value_explorer */
+
+.embed_value_explorer_container.is_not_dom_el {
+  height: 0px;
+}
+
+.embed_value_explorer_container.is_dom_el {
+  padding: 1em;
+}
+
+.embed_value_explorer_wrapper {
+  /* preserve wrapper from getting clicks for code line left to it */
+  pointer-events: none; 
+}
+
+.embed_value_explorer_container.is_not_dom_el .embed_value_explorer_wrapper {
+  margin-left: 1em;
+}
+
+.embed_value_explorer_content {
+  pointer-events: initial;
+  white-space: pre;
+  max-width: fit-content;
+  background-color: white;
+  box-shadow: 1px 2px 9px -1px var(--shadow_color);
+}
+
+.embed_value_explorer_content:focus {
+  outline: none;
+  box-shadow: 1px 2px 11px 1px var(--shadow_color);
+}
+
+.embed_value_explorer_content > .value_explorer_node {
+  margin-left: 0 !important;
+}
+
+.embed_value_explorer_control {
+  display: block;
+  margin-bottom: 1em;
+  font-size: 0.9em;
+}
+
+.value_explorer_node {
+  margin-left: 1em;
+}
+
+.value_explorer_header {
+  display: inline-block;
+  padding-right: 1em;
+  cursor: pointer;
+}
+
+.value_explorer_header .expand_icon {
+  padding: 5px;
+}
+
+.value_explorer_header.active {
+  background-color: rgb(148, 227, 191);
+}
+
+.value_explorer_key {
+  color: rgb(150, 0, 128);
+  font-weight: bold;
+}
+
+/* status */
+
+.statusbar {
+  font-family: system-ui;
+  margin-bottom: 0px;
+  grid-area: statusbar;
+  display: flex;
+  flex-direction: row;
+  align-items: center;
+  justify-content: flex-start;
+}
+
+.statusbar .spinner {
+  margin-right: 0.5em;
+}
+
+.status, .current_file {
+  font-size: 1.5em;
+}
+.status {
+  color: red;
+}
+
+.statusbar_action { 
+  margin-right: 2em;
+}
+
+.statusbar_action.first { 
+  margin-left: auto;
+}
+
+.open_app_window_button {
+  position: relative;
+}
+.open_app_window_tooltip {
+  padding: 1em;
+  position: absolute;
+  margin-bottom: 20px;
+  bottom: 100%;
+  border: none;
+  font-size: 1.7em;
+  background-color: rgb(120 206 247);
+  border-radius: 21px;
+  transform: scale(0);
+  transition: transform 0.3s;
+}
+.open_app_window_tooltip.on {
+  transform: scale(1);
+}
+.open_app_window_tooltip:after {
+  content: '';
+  width: 0;
+  height: 0;
+  border-left: 20px solid transparent;
+  border-right: 20px solid transparent;
+  border-top: 20px solid rgb(120 206 247);
+  position: absolute;
+  bottom: -20px;
+  left: 50%;
+  transform: translate(-50%);
+}
+
+.options {
+  padding: 5px;
+}
+.options > * {
+  margin: 5px;
+}
+
+.show_help, .github {
+  margin: 0em 0.5em;
+}
+
+.statusbar_button, .upload_button {
+  border: none;
+  color: white;
+  background: rgb(23 166 236);
+}
+
+.statusbar_button {
+  font-size: 1.2em;
+  margin-left: 1em;
+  &:last-of-type {
+    margin: 0em 0.5em;
+  }
+}
+
+.statusbar_button[disabled] {
+  background: grey;
+}
+
+.share_dialog input, .share_dialog button {
+  font-size: 1.2em;
+}
+
+.share_dialog button {
+  padding: 5px;
+  height: 2em;
+}
+
+dialog {
+  border: none;
+}
+
+dialog::backdrop {
+  background-color: rgb(225 244 253 / 80%);
+}
+
+.help_dialog[open] {
+  display: flex;
+  flex-direction: column;
+  justify-content: center;
+  align-items: center;
+  padding: 0;
+  min-width: 70%;
+  min-height: 70%;
+  background-color: white;
+}
+
+.help {
+  padding: 2em;
+  border-spacing: 5px;
+}
+
+.help th {
+  padding: 0.5em;
+}
+
+.help th.key {
+  width: 5em;
+}
+
+.help td.key {
+  background-color: rgb(225, 244, 253, 0.5);
+  border-radius: 10px;
+  text-align: center;
+}
+
+.help_dialog form {
+  margin-bottom: 1em;
+}
+
+.panel:not([open]) {
+  display: none;
+}
+
+.panel[open] {
+  padding: 0px;
+  margin: 0px 0px 0px auto;
+  height: 100%;
+  max-height: 100%;
+  animation: slide-in 0.2s ease-in forwards;
+  &::backdrop {
+    background-color: rgb(225 244 253 / 60%);
+  }
+}
+
+@keyframes slide-in{
+  0% {
+    transform: translateX(100%);
+  }
+  100% {
+    transform: translateX(0);
+  }
+}