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king-crimson\n\n\u003e A library that provides classes for managing sequential data.\n\n## Installation\n\n```sh\nnpm install king-crimson\n```\n\n## Usage\n\nThe following two management classes are provided.\n\n- `DateTimeDataManager`: Manage data with datetime information.\n- `IntervalDataManager`: Manages data with interval information.\n\n### DateTimeDataManager\n\n```ts\nimport { DateTimeDataManager } from \"king-crimson\";\nimport { DateTime, Duration, Interval } from \"luxon\";\nimport queryString from \"query-string\";\n\n// Event data to manage\ninterface MyEventData {\n  timestamp: number;\n  event: string;\n}\n\n// Create an async function to call API\nconst fetchData = async (since: number, until: number, signal: AbortSignal) =\u003e {\n  const query = queryString.stringify({ since, until });\n  const url = `https://example.com/api/data?${query}`;\n  const res = await fetch(uri, { signal });\n  const data = await res.json();\n  return data;\n};\n\n// Create instance\nconst ddm = new DateTimeDataManager\u003cMyEventData\u003e({\n  fetchFn(period: Interval) {\n    const controller = new AbortController();\n    const signal = controller.signal;\n    const since = period.start.toMillis();\n    const until = period.end.toMillis();\n    return {\n      promise: fetchData(since, until, signal),\n      cancel() {\n        controller.abort();\n      }\n    };\n  },\n  itemKey(item: MyEventData) {\n    return item.timestamp;\n  }\n});\n\n// Execute fetch\nconst datetime = DateTime.local();\nddm.fetch(datetime);\n\n// Cancel fetch\nddm.cansel();\n\n// Search data\nconst interval = datetime.before(Duration.fromObject({ hour: 1 }));\nconst data = ddm.searchBetween(interval);\n```\n\n#### Config\n\n| Property | Type                                                                  | Description                                                 |\n| -------- | --------------------------------------------------------------------- | ----------------------------------------------------------- |\n| fetchFn  | `(period: Interval) =\u003e { promise: Promise\u003cT[]\u003e, cancel: () =\u003e void }` | Methods that request data and methods that cancel requests. |\n| itemKey  | `(item: T) =\u003e any`                                                    | Key value of AVL tree.                                      |\n\n#### Options\n\n| Property             | Type                                                                                       | Default                                | Description                                                               |\n| -------------------- | ------------------------------------------------------------------------------------------ | -------------------------------------- | ------------------------------------------------------------------------- |\n| fetchDuration        | `Duration`                                                                                 | `Duration.fromObject({ hour: 24 })`    | Duration for making data requests in batch.                               |\n| requestDurationLimit | `Duration`                                                                                 | `Duration.fromObject({ minute: 180 })` | Duration limit for one data request.                                      |\n| updateInterceptor    | `((payload: { items: T[], period: Interval }) =\u003e { items: T[], period: Interval }) | null` | `null`                                 | Interceptor that transforms the payload before handling the update event. |\n\n### IntervalDataManager\n\n```ts\nimport { IntervalDataManager } from \"king-crimson\";\nimport { DateTime, Duration, Interval } from \"luxon\";\nimport queryString from \"query-string\";\n\n// Event data to manage\ninterface MyEventData {\n  timestamp: number;\n  duration: number;\n  event: string;\n}\n\n// Create an async function to call API\nconst fetchData = async (since: number, until: number, signal: AbortSignal) =\u003e {\n  const query = queryString.stringify({ since, until });\n  const url = `https://example.com/api/data?${query}`;\n  const res = await fetch(uri, { signal });\n  const data = await res.json();\n  return data;\n};\n\n// Create instance\nconst idm = new IntervalDataManager\u003cMyEventData\u003e({\n  fetchFn(period: Interval) {\n    const controller = new AbortController();\n    const signal = controller.signal;\n    const since = period.start.toMillis();\n    const until = period.end.toMillis();\n    return {\n      promise: fetchData(since, until, signal),\n      cancel() {\n        controller.abort();\n      }\n    };\n  },\n  itemKey(item: MyEventData) {\n    return item.timestamp;\n  },\n  itemTimestamp(item: MyEventData) {\n    return item.timestamp;\n  },\n  itemDuration(item: MyEventData) {\n    return item.duration;\n  }\n});\n\n// Execute fetch\nconst datetime = DateTime.local();\nidm.fetch(datetime);\n\n// Cancel fetch\nidm.cansel();\n\n// Search data\nconst interval = datetime.before(Duration.fromObject({ hour: 1 }));\nlet data = idm.searchBetween(interval);\n\n// Search for data that includes a specified datetime\ndata = searchOn(datetime);\n```\n\n#### Config\n\n| Property      | Type                                                                  | Description                                                            |\n| ------------- | --------------------------------------------------------------------- | ---------------------------------------------------------------------- |\n| fetchFn       | `(period: Interval) =\u003e { promise: Promise\u003cT[]\u003e, cancel: () =\u003e void }` | Methods that request data and methods that cancel requests.            |\n| itemKey       | `(item: T) =\u003e any`                                                    | Key value of AVL tree.                                                 |\n| itemTimestamp | `(item: T) =\u003e number`                                                 | Method that returns the timestamp of data in Unixtime in milliseconds. |\n| itemDuration  | `(item: T) =\u003e number`                                                 | Method that returns duration of data in milliseconds.                  |\n\n#### Options\n\n| Property             | Type                                                                                       | Default                                | Description                                                               |\n| -------------------- | ------------------------------------------------------------------------------------------ | -------------------------------------- | ------------------------------------------------------------------------- |\n| fetchDuration        | `Duration`                                                                                 | `Duration.fromObject({ hour: 24 })`    | Duration for making data requests in batch.                               |\n| requestDurationLimit | `Duration`                                                                                 | `Duration.fromObject({ minute: 180 })` | Duration limit for one data request.                                      |\n| updateInterceptor    | `((payload: { items: T[], period: Interval }) =\u003e { items: T[], period: Interval }) | null` | `null`                                 | Interceptor that transforms the payload before handling the update event. |\n\n## Event\n\nBoth classes emit the following events:\n\n| Event  | Payload                            | Description                                                                                   |\n| ------ | ---------------------------------- | --------------------------------------------------------------------------------------------- |\n| update | `{ items: T[], period: Interval }` | When each data fetch is completed, the acquired data and the acquisition period are notified. 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