refactor: make match-collector export its types, and consume them in frontend

match_collector/src/champion_stat.ts

@@ -1,8 +1,6 @@
 import { MongoClient } from 'mongodb'
 import {
-  ItemTree,
   GoldAdvantageTag,
-  PlatformCounts,
   treeInit,
   treeMerge,
   treeCutBranches,
@@ -15,14 +13,27 @@ import { PLATFORM_KEYS } from './platform'
 import {
   initItemDict as initFirstBackItemDict,
   extractFirstBackFromMatch,
-  groupFirstBacksByItemSet,
-  FirstBackData,
-  FirstBackGroup
+  groupFirstBacksByItemSet
 } from './first_back'
 
 import { Match, Timeline, Participant, Frame } from './api'
+import type {
+  Rune,
+  InternalBuild,
+  InternalBuildWithStartItems,
+  InternalLaneData,
+  InternalChampionData,
+  FirstBackData
+} from './types'
 
-function sameArrays(array1: Array<number>, array2: Array<number>) {
+// Type aliases for internal use
+type Builds = InternalBuild[]
+type Build = InternalBuild
+type BuildWithStartItems = InternalBuildWithStartItems
+type LaneData = InternalLaneData
+type ChampionData = InternalChampionData
+
+function sameArrays(array1: number[], array2: number[]) {
   if (array1.length != array2.length) return false
   for (const e of array1) {
     if (!array2.includes(e)) return false
@@ -55,77 +66,6 @@ function arrayRemovePercentage(
   }
 }
 
-type Rune = {
-  count: number
-  primaryStyle: number
-  secondaryStyle: number
-  selections: Array<number>
-  pickrate?: number
-}
-type Build = {
-  runeKeystone: number
-  runes: Array<Rune>
-  items: ItemTree
-  bootsFirstCount: number
-  bootsFirst?: number
-  count: number
-  suppItems: Array<{ data: number; count: number }>
-  boots: Array<{ data: number; count: number }>
-  pickrate?: number
-  // First back data (collected during processing, grouped in finalize)
-  firstBacksRaw?: FirstBackData[]
-  firstBacks?: FirstBackGroup[]
-}
-
-type BuildWithStartItems = {
-  runeKeystone: number
-  runes: Array<Rune>
-  items: ItemTree
-  bootsFirst?: number
-  bootsFirstCount: number
-  count: number
-  startItems: Array<{ data: number; count: number }>
-  suppItems: Array<{ data: number; count: number }>
-  boots: Array<{ data: number; count: number }>
-  pickrate?: number
-  firstBacksRaw?: FirstBackData[]
-  firstBacks?: FirstBackGroup[]
-}
-
-type Builds = Build[]
-type Champion = {
-  id: number
-  name: string
-  alias: string
-}
-type MatchupData = {
-  championId: number
-  winrate: number
-  games: number
-  championName: string
-  championAlias: string
-}
-
-type LaneData = {
-  data: string
-  count: number
-  winningMatches: number
-  losingMatches: number
-  winrate: number
-  pickrate: number
-  builds: Builds
-  matchups?: Array<MatchupData>
-  summonerSpells: Array<{ id: number; count: number; pickrate?: number }>
-  // Region distribution for this lane (used for tag derivation)
-  regionDistribution?: PlatformCounts
-}
-type ChampionData = {
-  champion: Champion
-  winningMatches: number
-  losingMatches: number
-  lanes: Array<LaneData>
-}
-
 // Helper function to create rune configuration from participant
 function createRuneConfiguration(participant: Participant): Rune {
   const primaryStyle = participant.perks.styles[0].style