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{ filter, get, isNumber } from '@antv/util';\nimport { Data, Datum, Meta, Options } from '../types';\nimport { Node, NodeLinkData } from '../types/relation-data';\nimport { LEVEL, log } from './invariant';\nimport { pick } from './pick';\n\n/**\n * 查看数据是否是全负数、或者全正数\n * @param data\n * @param field\n */\nexport function adjustYMetaByZero(data: Data, field: string): Meta {\n  if (!data) return {};\n  // 过滤出数字数据\n  const numberData = data.filter((datum: Datum) => {\n    const v = get(datum, [field]);\n    return isNumber(v) && !isNaN(v);\n  });\n\n  const gtZero = numberData.every((datum: Datum) => get(datum, [field]) >= 0);\n  const ltZero = numberData.every((datum: Datum) => get(datum, [field]) <= 0);\n\n  // 目前是增量更新，对 { min: 0, max: undefined } 进行 update({ max: 0 }) 会得到 { min: 0, max: 0 }\n  if (gtZero) {\n    return { min: 0 };\n  }\n  if (ltZero) {\n    return { max: 0 };\n  }\n  return {};\n}\n\n/**\n * 转换数据格式为带有节点与边的数据格式\n * @param data\n * @param sourceField\n * @param targetField\n * @param weightField\n * @param rawFields 存放一些原数据\n */\nexport function transformDataToNodeLinkData(\n  data: Data,\n  sourceField: string,\n  targetField: string,\n  weightField: string,\n  rawFields: string[] = []\n): NodeLinkData {\n  if (!Array.isArray(data)) {\n    return {\n      nodes: [],\n      links: [],\n    };\n  }\n\n  //   const nodes = [];\n  const links = [];\n  // 先使用对象方式存储\n  const nodesMap: Record<string, Node> = {};\n  let nodesIndex = -1;\n  // 数组变换成 chord layout 的数据结构\n  data.forEach((datum: Datum) => {\n    const source = datum[sourceField];\n    const target = datum[targetField];\n    const weight = datum[weightField];\n\n    const rawData = pick(datum, rawFields);\n\n    // source node\n    if (!nodesMap[source]) {\n      nodesMap[source] = {\n        id: ++nodesIndex,\n        name: source,\n        ...rawData,\n      };\n    }\n    if (!nodesMap[target]) {\n      nodesMap[target] = {\n        id: ++nodesIndex,\n        name: target,\n        ...rawData,\n      };\n    }\n    // links\n    links.push({\n      source: nodesMap[source].id,\n      target: nodesMap[target].id,\n      // sourceName: source,\n      // targetName: target,\n      value: weight,\n      ...rawData,\n    });\n  });\n  return {\n    // 需要按照 id 的顺序\n    nodes: Object.values(nodesMap).sort((a, b) => a.id - b.id),\n    links,\n  };\n}\n\n/**\n * 处理不合法的数据(过滤 非数值型 和 NaN，保留 null)\n * @param data\n * @param angleField\n */\nexport function processIllegalData(data: Options['data'], field: string) {\n  const processData = filter(data, (d) => {\n    const v = d[field];\n    return v === null || (typeof v === 'number' && !isNaN(v));\n  });\n\n  // 打印异常数据情况\n  log(LEVEL.WARN, processData.length === data.length, 'illegal data existed in chart data.');\n\n  return processData;\n}\n"]}