{
  "version": 3,
  "sources": ["../../javascript/boot_check.js"],
  "sourcesContent": ["// Reports a page whose main bundle never started. A bundle that fails to\n// parse on an old browser takes controllers/error_reporter.js down with it:\n// every button is dead and the JS error log stays empty (docs/js-errors.md,\n// \"boot_check.js reports a bundle that never started\"). Every layout loads\n// this file before its main bundle. It sticks to ES2019 syntax at most on\n// purpose (no `?.`, `??`, class fields: Safari 13 to 16) so that it parses where\n// the bundle doesn't; eslint.config.mjs parses it at ecmaVersion 2019 to hold that.\n(function () {\n  const HOST_BUNDLE =\n    /\\/assets\\/(application|admin|booking|kiosk|pages|guides|public_share)(-[0-9a-f]{64})?\\.js$/;\n  const START_GRACE_MS = 3000;\n  let reported = false;\n  let loadFailed = false;\n\n  function pathOf(url) {\n    const link = document.createElement(\"a\");\n    link.href = url || \"\";\n    return link.pathname;\n  }\n\n  function hostBundle() {\n    const scripts = document.getElementsByTagName(\"script\");\n    for (let i = 0; i < scripts.length; i++) {\n      const path = scripts[i].src ? pathOf(scripts[i].src) : \"\";\n      if (HOST_BUNDLE.test(path)) return path;\n    }\n    return null;\n  }\n\n  function report(message, source, line, column) {\n    if (reported || window.gamerBooted || !source) return;\n    reported = true;\n\n    const request = new XMLHttpRequest();\n    request.open(\"POST\", \"/js_errors\");\n    request.setRequestHeader(\"Content-Type\", \"application/json\");\n    request.send(\n      JSON.stringify({\n        message: String(message || \"unknown\").slice(0, 500),\n        source: source,\n        line: line || null,\n        column: column || null,\n        stack: \"\",\n        page: window.location.pathname,\n      }),\n    );\n  }\n\n  window.addEventListener(\n    \"error\",\n    function (event) {\n      const target = event.target;\n      // A script that failed to download (network, blocker) is no bug of ours.\n      if (target && target.tagName === \"SCRIPT\") {\n        if (HOST_BUNDLE.test(pathOf(target.src))) loadFailed = true;\n        return;\n      }\n      // The parse error itself, with the browser's message, when the bundle's\n      // own reporter never got to run.\n      const source = pathOf(event.filename);\n      if (HOST_BUNDLE.test(source)) {\n        report(event.message, source, event.lineno, event.colno);\n      }\n    },\n    true,\n  );\n\n  window.addEventListener(\"load\", function () {\n    setTimeout(function () {\n      if (!loadFailed) report(\"Bundle did not start\", hostBundle(), 0, 0);\n    }, START_GRACE_MS);\n  });\n})();\n"],
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