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export type ColumnStatMethod = 'sum' | 'avg' | 'max' | 'min'
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export type StatsCellAlign = 'left' | 'center' | 'right'
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export type StatsRowColumn = {
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key: string
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interactive: boolean
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prop?: string
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money?: boolean
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/** 显式对齐；缺省时由统计行从主表表头同步 */
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align?: StatsCellAlign
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}
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export const COLUMN_STAT_METHOD_OPTIONS: { value: ColumnStatMethod | ''; label: string }[] = [
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{ value: '', label: '无' },
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{ value: 'sum', label: '求和' },
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{ value: 'avg', label: '平均' },
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{ value: 'max', label: '最大值' },
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{ value: 'min', label: '最小值' }
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]
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export const COLUMN_STAT_METHOD_LABEL: Record<ColumnStatMethod, string> = {
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sum: '求和',
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avg: '平均',
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max: '最大值',
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min: '最小值'
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}
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export function normalizeCssTextAlign(value: string | null | undefined): StatsCellAlign {
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const ta = String(value || 'left').toLowerCase()
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if (ta === 'right' || ta === 'end') return 'right'
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if (ta === 'center') return 'center'
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return 'left'
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}
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/**
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* 优先列配置 align；金额列默认 right；
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* 其余同步主表列对齐（表体 `align`，无数据时回退表头）。
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* 注意：多数业务表 `header-align=center` 且 `align=right`，不可只读表头。
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*/
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export function resolveStatsCellAlign(
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col: Pick<StatsRowColumn, 'align' | 'money'>,
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columnAlign?: string | null
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): StatsCellAlign {
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if (col.align === 'left' || col.align === 'center' || col.align === 'right') return col.align
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if (col.money) return 'right'
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if (columnAlign) return normalizeCssTextAlign(columnAlign)
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return 'left'
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}
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/** 从主表读取各列 text-align：优先首行表体（对应 `align`），无行时回退表头 */
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export function getTableColumnTextAligns(table: HTMLElement | null | undefined): string[] {
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if (!table) return []
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const collect = (cells: NodeListOf<Element>): string[] => {
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const aligns: string[] = []
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cells.forEach((node) => {
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const el = node as HTMLElement
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if (el.classList.contains('gutter')) return
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aligns.push(getComputedStyle(el).textAlign || 'left')
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})
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return aligns
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}
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const firstRow = table.querySelector('.el-table__body-wrapper tbody tr')
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if (firstRow) {
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const fromBody = collect(firstRow.querySelectorAll('td.el-table__cell'))
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if (fromBody.length) return fromBody
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}
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return collect(table.querySelectorAll('.el-table__header-wrapper th.el-table__cell'))
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}
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export function applyStatsCellAlignStyles(
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cellEl: HTMLElement,
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align: StatsCellAlign,
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triggerSelector: string
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) {
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cellEl.style.justifyContent =
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align === 'right' ? 'flex-end' : align === 'center' ? 'center' : 'flex-start'
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cellEl.classList.remove('is-align-left', 'is-align-center', 'is-align-right')
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cellEl.classList.add(`is-align-${align}`)
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const trigger = cellEl.querySelector(triggerSelector) as HTMLElement | null
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if (trigger) trigger.style.textAlign = align
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}
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export function parseStatNumber(raw: unknown): number | null {
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if (raw == null || raw === '') return null
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if (typeof raw === 'number') return Number.isFinite(raw) ? raw : null
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let s = String(raw).trim()
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if (!s) return null
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s = s.replace(/^¥/, '').replace(/%$/, '').replace(/,/g, '')
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const n = Number(s)
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return Number.isFinite(n) ? n : null
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}
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function nonEmptyString(raw: unknown): string | null {
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if (raw == null) return null
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const s = String(raw).trim()
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return s ? s : null
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}
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export function aggregateColumnValues(
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values: unknown[],
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method: ColumnStatMethod
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): number | string | null {
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const nums: number[] = []
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const strs: string[] = []
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for (const v of values) {
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const n = parseStatNumber(v)
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if (n != null) nums.push(n)
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else {
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const s = nonEmptyString(v)
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if (s != null) strs.push(s)
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}
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}
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if (method === 'sum') {
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if (!nums.length) return null
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return nums.reduce((a, b) => a + b, 0)
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}
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if (method === 'avg') {
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if (!nums.length) return null
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return nums.reduce((a, b) => a + b, 0) / nums.length
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}
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if (method === 'max') {
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if (nums.length) return Math.max(...nums)
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if (strs.length) return strs.reduce((a, b) => (a >= b ? a : b))
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return null
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}
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if (nums.length) return Math.min(...nums)
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if (strs.length) return strs.reduce((a, b) => (a <= b ? a : b))
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return null
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}
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export function formatStatNumberResult(
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value: number,
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opts: { money?: boolean } = {}
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): string {
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if (opts.money) {
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return value.toLocaleString('zh-CN', {
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minimumFractionDigits: 2,
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maximumFractionDigits: 2
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})
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}
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if (Number.isInteger(value)) return String(value)
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return value.toLocaleString('zh-CN', { maximumFractionDigits: 4 })
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}
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export function formatColumnStatDisplay(
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method: ColumnStatMethod | '' | null | undefined,
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values: unknown[],
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opts: { money?: boolean } = {}
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): string {
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if (!method) return ''
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const label = COLUMN_STAT_METHOD_LABEL[method]
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const agg = aggregateColumnValues(values, method)
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if (agg == null) return `${label} -`
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if (typeof agg === 'number') {
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return `${label} ${formatStatNumberResult(agg, opts)}`
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}
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return `${label} ${agg}`
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}
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export type ColumnStatConfigMap = Partial<Record<string, ColumnStatMethod>>
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export function loadColumnStatConfig(storageKey: string): ColumnStatConfigMap {
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try {
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const raw = localStorage.getItem(storageKey)
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if (!raw) return {}
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const parsed = JSON.parse(raw) as Record<string, unknown>
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if (!parsed || typeof parsed !== 'object') return {}
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const out: ColumnStatConfigMap = {}
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for (const [k, v] of Object.entries(parsed)) {
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if (v === 'sum' || v === 'avg' || v === 'max' || v === 'min') out[k] = v
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}
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return out
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} catch {
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return {}
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}
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}
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export function saveColumnStatConfig(
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config: ColumnStatConfigMap,
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storageKey: string
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): void {
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const cleaned: ColumnStatConfigMap = {}
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for (const [k, v] of Object.entries(config)) {
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if (v === 'sum' || v === 'avg' || v === 'max' || v === 'min') cleaned[k] = v
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}
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localStorage.setItem(storageKey, JSON.stringify(cleaned))
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}
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export function setColumnStatMethod(
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config: ColumnStatConfigMap,
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prop: string,
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method: ColumnStatMethod | ''
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): ColumnStatConfigMap {
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const next = { ...config }
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if (!method) delete next[prop]
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else next[prop] = method
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return next
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}
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/** 构建与主表列顺序一致的统计行列（前导占位 + 固定列 + 可见可选列） */
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export function buildStatsRowColumns(options: {
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leadingSpacers?: number
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alwaysColumns?: { prop: string; money?: boolean }[]
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optionalDefs?: { prop: string }[]
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isColumnVisible?: (prop: string) => boolean
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moneyProps?: Set<string> | string[]
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}): StatsRowColumn[] {
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const {
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leadingSpacers = 0,
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alwaysColumns = [],
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optionalDefs = [],
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isColumnVisible = () => true,
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moneyProps
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} = options
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const moneySet =
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moneyProps instanceof Set
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? moneyProps
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: new Set(moneyProps || [])
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const cols: StatsRowColumn[] = []
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for (let i = 0; i < leadingSpacers; i++) {
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cols.push({ key: `__spacer_${i}`, interactive: false })
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}
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for (const col of alwaysColumns) {
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const money = col.money ?? moneySet.has(col.prop)
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cols.push({
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key: col.prop,
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interactive: true,
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prop: col.prop,
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money,
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...(money ? { align: 'right' as const } : {})
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})
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}
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for (const def of optionalDefs) {
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if (!isColumnVisible(def.prop)) continue
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const money = moneySet.has(def.prop)
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cols.push({
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key: def.prop,
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interactive: true,
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prop: def.prop,
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money,
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...(money ? { align: 'right' as const } : {})
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})
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}
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return cols
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}
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