pezkuwi-mobile-app/frontend/.metro-cache/cache/71/cd25b8e84974054fd0be9ad94dfb777f7de48ca3baaa7e44944d795836eeff449914d3

{"dependencies":[{"name":"rxjs","data":{"asyncType":null,"isESMImport":false,"locs":[{"start":{"line":5,"column":15,"index":194},"end":{"line":5,"column":30,"index":209}}],"key":"atDzfUGaJNRNtwyVumomzH/5ygw=","exportNames":["*"],"imports":1}},{"name":"../util/index.js","data":{"asyncType":null,"isESMImport":false,"locs":[{"start":{"line":6,"column":19,"index":230},"end":{"line":6,"column":46,"index":257}}],"key":"H94lp+EitftSFqDHaenrSs5zKB0=","exportNames":["*"],"imports":1}}],"output":[{"data":{"code":"__d(function (global, require, _$$_IMPORT_DEFAULT, _$$_IMPORT_ALL, module, exports, _dependencyMap) {\n  \"use strict\";\n\n  Object.defineProperty(exports, \"__esModule\", {\n    value: true\n  });\n  exports._getHeaderRange = _getHeaderRange;\n  exports.subscribeFinalizedHeads = subscribeFinalizedHeads;\n  const rxjs_1 = require(_dependencyMap[0], \"rxjs\");\n  const index_js_1 = require(_dependencyMap[1], \"../util/index.js\");\n  /**\n   * Returns a header range from startHash to to (not including) endHash, i.e. lastBlock.parentHash === endHash\n   */\n  function _getHeaderRange(instanceId, api) {\n    return (0, index_js_1.memo)(instanceId, (startHash, endHash, prev = []) => api.rpc.chain.getHeader(startHash).pipe((0, rxjs_1.switchMap)(header => header.parentHash.eq(endHash) ? (0, rxjs_1.of)([header, ...prev]) : api.derive.chain._getHeaderRange(header.parentHash, endHash, [header, ...prev]))));\n  }\n  /**\n   * @name subscribeFinalizedHeads\n   * @description An observable of the finalized block headers. Unlike the base\n   * chain.subscribeFinalizedHeads this does not skip any headers. Since finalization\n   * may skip specific blocks (finalization happens in terms of chains), this version\n   * of the derive tracks missing headers (since last retrieved) and provides them\n   * to the caller.\n   * @example\n   * ```javascript\n   * const unsub = await api.derive.chain.subscribeFinalizedHeads((finalizedHead) => {\n   *   console.log(`${finalizedHead.hash}`);\n   * });\n   * ```\n   */\n  function subscribeFinalizedHeads(instanceId, api) {\n    return (0, index_js_1.memo)(instanceId, () => {\n      let prevHash = null;\n      return api.rpc.chain.subscribeFinalizedHeads().pipe((0, rxjs_1.switchMap)(header => {\n        const endHash = prevHash;\n        const startHash = header.parentHash;\n        prevHash = header.createdAtHash = header.hash;\n        return endHash === null || startHash.eq(endHash) ? (0, rxjs_1.of)(header) : api.derive.chain._getHeaderRange(startHash, endHash, [header]).pipe((0, rxjs_1.switchMap)(headers => (0, rxjs_1.from)(headers)));\n      }));\n    });\n  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