/** Offline B04 lifecycle regression. --build-only emits a standalone own-component fixture. */
import fs from 'node:fs'
import path from 'node:path'
import { createRequire } from 'node:module'
const require = createRequire(import.meta.url)
fs.mkdirSync('.tmp',{recursive:true})
const output=fs.mkdtempSync(path.resolve('.tmp/b04-image-'))
await require('esbuild').build({entryPoints:['scripts/b04-image-lifecycle-fixture.tsx'],outfile:path.join(output,'fixture.js'),bundle:true,platform:'browser',format:'iife',jsx:'automatic',loader:{'.woff2':'dataurl','.woff':'dataurl','.ttf':'dataurl','.svg':'dataurl','.png':'dataurl'},logLevel:'error'})
fs.writeFileSync(path.join(output,'index.html'),`Running synthetic own-component frame probe…
`)
if(process.argv.includes('--build-only')){console.log(JSON.stringify({result:'BUILD_ONLY',output,limits:'Not executed in a native browser; open index.html in a permitted browser for synthetic consecutive-frame probe.'}));process.exit(0)}
const {JSDOM}=require(process.env.YCODE_TEST_DOM_MODULE||process.env.YCODE_JSDOM_MODULE||'jsdom')
const dom=new JSDOM('',{url:'https://fixture.invalid',runScripts:'outside-only',pretendToBeVisual:true})
const w=dom.window
w.fetch=()=>{throw Error('Fixture forbids network')}
w.ResizeObserver=class {observe(){}unobserve(){}disconnect(){}}
w.matchMedia=()=>({matches:false,addEventListener(){},removeEventListener(){}})
let timer
try {
w.eval(fs.readFileSync(path.join(output,'fixture.js'),'utf8'))
const report=await Promise.race([w.__b04.run(),new Promise((_,reject)=>{timer=setTimeout(()=>reject(Error('B04 fixture timed out after 20s')),20000)})])
fs.writeFileSync(path.join(output,'report.json'),JSON.stringify(report,null,2))
console.log(JSON.stringify({result:'PASS',checks:report.checks.length,samples:report.samples.length,output,limits:report.limits}))
}finally{clearTimeout(timer);dom.window.close()}