[{"_1":2,"_3":-5,"_4":-5},"loaderData",{"_5":6,"_7":8},"actionData","errors","root",{"_116":117,"_118":119},"routes/embed.x.$handle.$name.$",{"_9":10,"_11":12,"_13":14,"_15":16,"_17":18,"_19":20,"_21":-5},"handle","kernel","name","jev-browser-use","path","tests/back-browser.ts","project",{"_22":48,"_11":12,"_35":49,"_50":-5,"_51":44,"_52":53,"_54":55,"_56":57,"_58":59,"_60":61,"_62":63,"_64":34,"_65":-5,"_66":-5,"_67":68,"_69":70,"_71":72,"_73":74,"_75":76,"_77":-5,"_78":79,"_80":79,"_81":82,"_83":82,"_84":82,"_85":79,"_86":79,"_87":88,"_89":90,"_91":92,"_93":44},"file",{"_22":23,"_11":24,"_25":26,"_27":28,"_29":30,"_31":32,"_33":34,"_35":36,"_37":38,"_39":40,"_41":42,"_43":44,"_45":-5,"_13":46},"permalink","https://www.val.town/x/kernel/jev-browser-use/code/tests/back-browser.ts","extension","id","eb3822cb-80e7-423d-8b5f-7ed74e4ca563","back-browser.ts","fileId","c2523f06-b22d-11f1-ab15-1607ee4eb77e","parentId","01a0abce-8571-76e1-8061-ca995244ffd6","branchId","789b925f-1f04-4496-b61e-c55aa361585d","branchVersion",244,"latest",true,"createdAt",["D",1789607550294],"version",1,"fileType","script","content","/**\n * Live Kernel smoke test for Back on fixture pages. Creates one short-lived\n * browser and always deletes it. Makes no model calls.\n */\nimport { createBrowser, destroyBrowser, runPlaywright } from \"../kernel.ts\";\nimport { act, backScript, describeAction, perceive } from \"../browser-use.ts\";\nimport { availableCandidates, backOption, observePrevious, pageKey, rememberAttempt } from \"../history.ts\";\nimport type { Decision } from \"../decide.ts\";\n\nfunction check(ok: unknown, message: string) {\n if (!ok) throw new Error(message);\n console.log(\"PASS\", message);\n}\nconst browser = await createBrowser({ name: \"jev-back-regression\", idleTimeoutSec: 60 });\ntry {\n const source = \"data:text/html,\" + encodeURIComponent('Architecture fixture

Architecture

Buildings
Eiffel Tower

');\n const deadEnd = \"data:text/html,\" + encodeURIComponent('Buildings fixture

Buildings

No useful onward route.

');\n const go = async (url: string) => {\n const r = await runPlaywright(browser.session_id, `await page.goto(${JSON.stringify(url)}, { waitUntil: \"domcontentloaded\" }); return true;`);\n if (!r.success) throw new Error(r.error);\n };\n await go(source);\n const parent = await perceive(browser.session_id);\n check(!!parent.navigation, \"perception reads actual Chromium navigation history\");\n const state = await pageKey(parent);\n const buildings = parent.candidates.find((c) => c.label === \"Buildings\");\n check(!!buildings, \"fixture exposes the explored route\");\n const step = rememberAttempt(parent, state, { action: \"click\", target: buildings } as Decision, 'click \"Buildings\"');\n await go(deadEnd);\n const child = await perceive(browser.session_id);\n const childState = await pageKey(child);\n const steps = [step];\n observePrevious(steps, child, childState);\n const recovery = backOption(child, { state: childState, steps });\n check(!!recovery && recovery.alternatives.includes(\"Eiffel Tower\"), \"live dead end offers Back with an untried route\");\n const decision = { action: \"back\", back: recovery } as Decision;\n const backRecord = rememberAttempt(child, childState, decision, describeAction(decision));\n steps.push(backRecord);\n await act(browser.session_id, decision);\n const returned = await perceive(browser.session_id);\n const returnedState = await pageKey(returned);\n observePrevious(steps, returned, returnedState);\n check(returned.navigation?.currentId === parent.navigation?.currentId && returned.url === parent.url, \"Back reaches the verified original browser entry\");\n check(returnedState === state, \"restored page has the same state fingerprint\");\n const remaining = availableCandidates(returned, { state: returnedState, steps });\n check(remaining.some((c) => c.label === \"Eiffel Tower\") && !remaining.some((c) => c.label === \"Buildings\"), \"Back exposes the alternative without repeating Buildings\");\n check(backRecord.outcome === \"changed\", \"successful Back is recorded as a changed observation\");\n\n // A stale decision must be rejected without navigating.\n let rejected = false;\n try { await act(browser.session_id, decision); } catch { rejected = true; }\n check(rejected, \"stale Back destination is rejected\");\n check((await perceive(browser.session_id)).navigation?.currentId === parent.navigation?.currentId, \"rejected Back leaves navigation unchanged\");\n\n // Same-document navigation can return null from Playwright goBack.\n const pushed = await runPlaywright(browser.session_id, 'await page.evaluate(() => history.pushState({}, \"\", \"#another-state\")); return true;');\n if (!pushed.success) throw new Error(pushed.error);\n const sameDocument = await perceive(browser.session_id);\n const sameState = await pageKey(sameDocument);\n const sameBack = backOption(sameDocument, { state: sameState, steps: [step] });\n check(!!sameBack, \"same-document history supports Back\");\n await act(browser.session_id, { action: \"back\", back: sameBack } as Decision);\n check((await perceive(browser.session_id)).navigation?.currentId === parent.navigation?.currentId, \"same-document Back succeeds even without an HTTP response\");\n\n // A deferred script deliberately prevents DOMContentLoaded on the Back target.\n const slowUrl = \"https://jev-back-fixture.test/slow\";\n const quickUrl = \"https://jev-back-fixture.test/quick\";\n const generated = backScript({ fromEntryId: -1, entryId: -2, url: slowUrl } as NonNullable);\n const slowCheck = await runPlaywright(browser.session_id, `\n let releaseScript;\n const blocked = new Promise(resolve => { releaseScript = resolve; });\n await page.route(\"https://jev-back-fixture.test/**\", async route => {\n const url = route.request().url();\n if (url.endsWith(\"/blocked.js\")) {\n await blocked;\n await route.fulfill({ contentType: \"application/javascript\", body: \"\" }).catch(() => {});\n } else {\n await route.fulfill({ contentType: \"text/html\", headers: { \"cache-control\": \"no-store\" },\n body: url.endsWith(\"/slow\")\n ? '

Slow target

'\n : '

Quick page

' });\n }\n });\n const historyClient = await page.context().newCDPSession(page);\n try {\n await page.goto(${JSON.stringify(slowUrl)}, { waitUntil: \"commit\" });\n await page.goto(${JSON.stringify(quickUrl)}, { waitUntil: \"commit\" });\n const history = await historyClient.send(\"Page.getNavigationHistory\");\n const from = history.entries[history.currentIndex];\n const to = history.entries[history.currentIndex - 1];\n const source = ${JSON.stringify(generated)}\n .replace('\"fromEntryId\":-1', '\"fromEntryId\":' + from.id)\n .replace('\"entryId\":-2', '\"entryId\":' + to.id);\n const started = Date.now();\n const result = await new Function(\"page\", \"return (async () => {\" + source + \"})()\")(page);\n const readyState = await page.evaluate(() => document.readyState);\n return { result, readyState, elapsed: Date.now() - started };\n } finally {\n releaseScript();\n await page.unrouteAll({ behavior: \"wait\" });\n await historyClient.detach();\n }\n `, 20);\n if (!slowCheck.success) throw new Error(slowCheck.error);\n const slow = slowCheck.result as { result: { url: string }; readyState: string; elapsed: number };\n check(slow.result.url === slowUrl, \"Back reaches a page with a blocked deferred load\");\n check(slow.readyState === \"loading\", \"Back succeeds before DOMContentLoaded\");\n check(slow.elapsed < 8000, \"Back does not consume the old load-event timeout\");\n console.log(\"14 live Back checks passed.\");\n\n} finally {\n await destroyBrowser(browser.session_id);\n console.log(\"Test browser deleted.\");\n}\n","deleted",false,"label",[47,24],"tests","3c438ea3-80e8-4cac-9708-6511f055598d",["D",1789588833583],"deletedAt","legacyEnvVars","privacy","public","httpPrivacy","restricted","description","Describe a task; Jev decides each step in a KERNEL cloud browser","imageUrl","https://imagedelivery.net/iHX6Ovru0O7AjmyT5yZRoA/601425b5-d08c-486a-cae2-cbfbdf0cc801/square512?exp=1789614253&sig=0ac5189338937875dcd4a5b99ac38641d0b1e12210c0234b9ab87411706d197b","userId","a0bf3b31-15a5-4d5c-880e-4b1e22c9bc18","pinnedFileId","01a0abce-8571-76e1-8061-dc657cf63b40","pinPreview","pinMigrated","screenshotVersion","likeCount",0,"orgId","b2fd4880-5c2e-11f0-9801-5764bf98a432","tursoName","3c438ea380e84cac97086511f055598d","tursoHostname","3c438ea380e84cac97086511f055598d-val-town.aws-us-east-2.turso.io","tursoMeasuredAt",["D",1789590099209],"pinned","userPerm","r","valPerm","blobPerm","rw","emailPerm","sqlitePerm","projectPerm","telemetryPerm","user",{"_9":10,"_115":111},"org",{"_9":10,"_108":109,"_110":111,"_60":-5,"_112":113,"_114":34},"branch",{"_37":94,"_11":95,"_22":30,"_96":48,"_97":98,"_99":100,"_101":53,"_102":103,"_104":105,"_106":12,"_107":10},"isOwned",282,"main","projectId","forkedBranchId","e9a8eeca-33f2-423b-8459-435fd862f66d","forkedBranchVersion",74,"forkedProjectPrivacy","forkedProjectId","c242175a-bb41-49a1-ae69-d9c2930a22f1","forkedProjectOrgId","e81e7335-6d4c-4764-a902-d0962bbfa9f7","projectName","userHandle","displayName","KERNEL","avatar","https://imagedelivery.net/iHX6Ovru0O7AjmyT5yZRoA/772b82b9-bcf2-4ee8-2b88-3bbabc7f9801/square512?exp=1789614253&sig=e91dc67fb7668dd283661ef701b3962b348c989405de62dab218fd9e6a44ce53","tier","business","canRestrictVals","profileImageUrl","ctx",{"_87":-5,"_149":150,"_151":152,"_153":154,"_155":44,"_156":44,"_157":44,"_158":34,"_159":-5,"_160":-7,"_161":-7,"_162":68,"_163":44,"_164":44,"_165":-5,"_166":44,"_167":44,"_168":44,"_169":-5},"ENV",{"_120":121,"_122":123,"_124":95,"_125":126,"_127":128,"_129":130,"_131":132,"_133":134,"_135":136,"_137":138,"_139":140,"_141":142,"_143":144,"_145":146,"_147":148},"REACT_APP_SENTRY_DSN","https://586020d86f05489db63a554690acf1e9@o1398359.ingest.sentry.io/6724499","RENDER_GIT_COMMIT","c73f21da490985bff19c279eb0e09db24d688e4f","RENDER_GIT_BRANCH","POSTHOG_API_TOKEN","phc_nmoyuAkStEZuUp69rYlg1DZgrIt19Gx0Y4Hwf8tGgJP","POSTHOG_API_HOST","https://wart.val.town","WEB_API_TEMPLATE","https://{val}.web.val.run","APP_URL","https://www.val.town","MODULE_URL","https://esm.town","VANITY_WEB_API_TEMPLATE","https://{label}.val.run/","DENOLS_URL","https://lsp.val.town","NODE_ENV","production","CLOUDFLARE_TURNSTILE_SITE_KEY","0x4AAAAAACtaIZJH7s9rBMZ6","GOOGLE_CLIENT_ID","875989696899-jtsqkhlbdv5jrlsk8631p7ipjg3c6o62.apps.googleusercontent.com","STRIPE_PUBLISHABLE_KEY","pk_live_51N2zvWEpZTTLipIkVEwXrUG9AT0yeOOEYxszarZT1jpsZV58Ly6wlg3SltZpHN26CUalOBmUSY7adQRQiSkCZz2500qSXNkf8Y","API_URL","https://api.val.town","orgs",[],"preferencesKeybindings","default","preferencesTheme","light","preferencesFixers","preferencesCopilot","preferencesSelectionAi","preferencesCloseBrackets","preferencesChatPanelState","preferencesDprint","preferencesDenofmt","notificationCount","flagDenols","isBusinessOrgMember","businessOrgHandle","isBusinessOrgAdmin","isHigherTownieTier","navCollapsed","currentOrgId"]