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srcdoc.html
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<!doctype html>
<html>
<head>
<style>
html.dark {
color-scheme: dark;
}
body {
font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto,
Oxygen, Ubuntu, Cantarell, 'Open Sans', 'Helvetica Neue', sans-serif;
}
</style>
<!-- PREVIEW-OPTIONS-HEAD-HTML -->
<script>
;(() => {
let scriptEls = []
window.process = { env: {} }
window.__modules__ = {}
window.__export__ = (mod, key, get) => {
Object.defineProperty(mod, key, {
enumerable: true,
configurable: true,
get,
})
}
window.__dynamic_import__ = (key) => {
return Promise.resolve(window.__modules__[key])
}
async function handle_message(ev) {
let { action, cmd_id } = ev.data
const send_message = (payload) =>
parent.postMessage({ ...payload }, ev.origin)
const send_reply = (payload) => send_message({ ...payload, cmd_id })
const send_ok = () => send_reply({ action: 'cmd_ok' })
const send_error = (message, stack) =>
send_reply({ action: 'cmd_error', message, stack })
if (action === 'eval') {
try {
if (scriptEls.length) {
scriptEls.forEach((el) => {
document.head.removeChild(el)
})
scriptEls.length = 0
}
let { script: scripts } = ev.data.args
if (typeof scripts === 'string') scripts = [scripts]
for (const script of scripts) {
const scriptEl = document.createElement('script')
scriptEl.setAttribute('type', 'module')
// send ok in the module script to ensure sequential evaluation
// of multiple proxy.eval() calls
const done = new Promise((resolve) => {
window.__next__ = resolve
})
scriptEl.innerHTML = script + `\nwindow.__next__()`
document.head.appendChild(scriptEl)
scriptEl.onerror = (err) => send_error(err.message, err.stack)
scriptEls.push(scriptEl)
await done
}
send_ok()
} catch (e) {
send_error(e.message, e.stack)
}
}
if (action === 'catch_clicks') {
try {
const top_origin = ev.origin
document.body.addEventListener('click', (event) => {
if (event.which !== 1) return
if (event.metaKey || event.ctrlKey || event.shiftKey) return
if (event.defaultPrevented) return
// ensure target is a link
let el = event.target
while (el && el.nodeName !== 'A') el = el.parentNode
if (!el || el.nodeName !== 'A') return
if (
el.hasAttribute('download') ||
el.getAttribute('rel') === 'external' ||
el.target ||
el.href.startsWith('javascript:') ||
!el.href
)
return
event.preventDefault()
if (el.href.startsWith(top_origin)) {
const url = new URL(el.href)
if (url.hash[0] === '#') {
window.location.hash = url.hash
return
}
}
window.open(el.href, '_blank')
})
send_ok()
} catch (e) {
send_error(e.message, e.stack)
}
}
}
window.addEventListener('message', handle_message, false)
window.onerror = function (msg, url, lineNo, columnNo, error) {
// ignore errors from import map polyfill - these are necessary for
// it to detect browser support
if (msg.includes('module specifier “vue”')) {
// firefox only error, ignore
return false
}
if (msg.includes("Module specifier, 'vue")) {
// Safari only
return false
}
try {
parent.postMessage({ action: 'error', value: error }, '*')
} catch (e) {
parent.postMessage({ action: 'error', value: msg }, '*')
}
}
window.addEventListener('unhandledrejection', (event) => {
if (
event.reason.message &&
event.reason.message.includes('Cross-origin')
) {
event.preventDefault()
return
}
try {
parent.postMessage(
{ action: 'unhandledrejection', value: event.reason },
'*',
)
} catch (e) {
parent.postMessage(
{ action: 'unhandledrejection', value: event.reason.message },
'*',
)
}
})
let previous = { level: null, args: null }
;['clear', 'log', 'info', 'dir', 'warn', 'error', 'table'].forEach(
(level) => {
const original = console[level]
console[level] = (...args) => {
const msg = args[0]
if (typeof msg === 'string') {
if (
msg.includes('You are running a development build of Vue') ||
msg.includes('You are running the esm-bundler build of Vue')
) {
return
}
}
original(...args)
const stringifiedArgs = stringify(args)
if (
previous.level === level &&
previous.args &&
previous.args === stringifiedArgs
) {
parent.postMessage(
{ action: 'console', level, duplicate: true },
'*',
)
} else {
previous = { level, args: stringifiedArgs }
try {
parent.postMessage({ action: 'console', level, args }, '*')
} catch (err) {
parent.postMessage(
{ action: 'console', level, args: args.map(toString) },
'*',
)
}
}
}
},
)
;[
{ method: 'group', action: 'console_group' },
{ method: 'groupEnd', action: 'console_group_end' },
{ method: 'groupCollapsed', action: 'console_group_collapsed' },
].forEach((group_action) => {
const original = console[group_action.method]
console[group_action.method] = (label) => {
parent.postMessage({ action: group_action.action, label }, '*')
original(label)
}
})
const timers = new Map()
const original_time = console.time
const original_timelog = console.timeLog
const original_timeend = console.timeEnd
console.time = (label = 'default') => {
original_time(label)
timers.set(label, performance.now())
}
console.timeLog = (label = 'default') => {
original_timelog(label)
const now = performance.now()
if (timers.has(label)) {
parent.postMessage(
{
action: 'console',
level: 'system-log',
args: [`${label}: ${now - timers.get(label)}ms`],
},
'*',
)
} else {
parent.postMessage(
{
action: 'console',
level: 'system-warn',
args: [`Timer '${label}' does not exist`],
},
'*',
)
}
}
console.timeEnd = (label = 'default') => {
original_timeend(label)
const now = performance.now()
if (timers.has(label)) {
parent.postMessage(
{
action: 'console',
level: 'system-log',
args: [`${label}: ${now - timers.get(label)}ms`],
},
'*',
)
} else {
parent.postMessage(
{
action: 'console',
level: 'system-warn',
args: [`Timer '${label}' does not exist`],
},
'*',
)
}
timers.delete(label)
}
const original_assert = console.assert
console.assert = (condition, ...args) => {
if (condition) {
const stack = new Error().stack
parent.postMessage(
{ action: 'console', level: 'assert', args, stack },
'*',
)
}
original_assert(condition, ...args)
}
const counter = new Map()
const original_count = console.count
const original_countreset = console.countReset
console.count = (label = 'default') => {
counter.set(label, (counter.get(label) || 0) + 1)
parent.postMessage(
{
action: 'console',
level: 'system-log',
args: `${label}: ${counter.get(label)}`,
},
'*',
)
original_count(label)
}
console.countReset = (label = 'default') => {
if (counter.has(label)) {
counter.set(label, 0)
} else {
parent.postMessage(
{
action: 'console',
level: 'system-warn',
args: `Count for '${label}' does not exist`,
},
'*',
)
}
original_countreset(label)
}
const original_trace = console.trace
console.trace = (...args) => {
const stack = new Error().stack
parent.postMessage(
{ action: 'console', level: 'trace', args, stack },
'*',
)
original_trace(...args)
}
function toString(value) {
if (value instanceof Error) {
return value.message
}
for (const fn of [
String,
(v) => Object.prototype.toString.call(v),
(v) => typeof v,
]) {
try {
return fn(value)
} catch (err) {}
}
}
function isComponentProxy(value) {
return (
value &&
typeof value === 'object' &&
value.__v_skip === true &&
typeof value.$nextTick === 'function' &&
value.$ &&
value._
)
}
function stringify(args) {
try {
return JSON.stringify(args, (key, value) => {
return isComponentProxy(value) ? '{component proxy}' : value
})
} catch (error) {
return null
}
}
})()
</script>
<!-- ES Module Shims: Import maps polyfill for modules browsers without import maps support (all except Chrome 89+) -->
<script
async
src="https://cdn.jsdelivr.net/npm/[email protected]/dist/es-module-shims.wasm.js"
></script>
<script type="importmap">
<!--IMPORT_MAP-->
</script>
</head>
<body>
<!--PREVIEW-OPTIONS-PLACEHOLDER-HTML-->
</body>
</html>