{"dependencies":[{"name":"rxjs","data":{"asyncType":null,"isESMImport":false,"locs":[{"start":{"line":4,"column":15,"index":129},"end":{"line":4,"column":30,"index":144}}],"key":"atDzfUGaJNRNtwyVumomzH/5ygw=","exportNames":["*"],"imports":1}},{"name":"@polkadot/util","data":{"asyncType":null,"isESMImport":false,"locs":[{"start":{"line":5,"column":15,"index":161},"end":{"line":5,"column":40,"index":186}}],"key":"u0mzEw2nilnHoUWtEdZl0JKHutA=","exportNames":["*"],"imports":1}},{"name":"../util/index.js","data":{"asyncType":null,"isESMImport":false,"locs":[{"start":{"line":6,"column":19,"index":207},"end":{"line":6,"column":46,"index":234}}],"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.erasHistoric = erasHistoric;\n  const rxjs_1 = require(_dependencyMap[0], \"rxjs\");\n  const util_1 = require(_dependencyMap[1], \"@polkadot/util\");\n  const index_js_1 = require(_dependencyMap[2], \"../util/index.js\");\n  /**\n   * @name erasHistoric\n   * @param {boolean} withActive? (Optional) Whether to include the active era in the result.\n   */\n  function erasHistoric(instanceId, api) {\n    return (0, index_js_1.memo)(instanceId, withActive => (0, rxjs_1.combineLatest)([api.query.staking.activeEra(), api.consts.staking.historyDepth ? (0, rxjs_1.of)(api.consts.staking.historyDepth) : api.query.staking['historyDepth']()]).pipe((0, rxjs_1.map)(([activeEraOpt, historyDepth]) => {\n      const result = [];\n      const max = historyDepth.toNumber();\n      const activeEra = activeEraOpt.unwrapOrDefault().index;\n      let lastEra = activeEra;\n      while (lastEra.gte(util_1.BN_ZERO) && result.length < max) {\n        if (lastEra !== activeEra || withActive === true) {\n          result.push(api.registry.createType('EraIndex', lastEra));\n        }\n        lastEra = lastEra.sub(util_1.BN_ONE);\n      }\n      // go from oldest to newest\n      return result.reverse();\n    })));\n  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