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219
src/collector/v2/impl.ts
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219
src/collector/v2/impl.ts
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// import { Converter } from "../../types.js";
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// import { CollectorFactory, CollectorInstance } from "./types.js";
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// export class ToArrayCollectorFactory<TElement> implements CollectorFactory<TElement, TElement[]> {
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// initialize() {
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// return new ToArrayCollectorInstance<TElement>();
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// }
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// };
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// class ToArrayCollectorInstance<TElement> implements CollectorInstance<TElement, TElement[]> {
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// readonly #accumulator: TElement[];
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// constructor() {
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// this.#accumulator = [];
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// }
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// accumulate(element: TElement) {
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// this.#accumulator.push(element);
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// }
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// finalize() {
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// return this.#accumulator;
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// }
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// }
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// export class ToObjectCollectorFactory<TElement, TKey extends PropertyKey, TValue> implements CollectorFactory<TElement, Record<TKey, TValue>> {
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// readonly #keySelector: Converter<TElement, TKey>;
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// readonly #valueSelector: Converter<TElement, TValue>;
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// constructor(keySelector: Converter<TElement, TKey>, valueSelector: Converter<TElement, TValue>) {
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// this.#keySelector = keySelector;
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// this.#valueSelector = valueSelector;
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// }
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// get keySelector() {
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// return this.#keySelector;
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// }
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// get valueSelector() {
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// return this.#valueSelector;
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// }
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// initialize() {
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// return new ToObjectCollectorInstance<TElement, TKey, TValue>(this);
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// }
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// }
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// class ToObjectCollectorInstance<TElement, TKey extends PropertyKey, TValue> implements CollectorInstance<TElement, Record<TKey, TValue>> {
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// readonly #factory: ToObjectCollectorFactory<TElement, TKey, TValue>;
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// readonly #accumulator = <Record<TKey, TValue>>{};
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// constructor(factory: ToObjectCollectorFactory<TElement, TKey, TValue>) {
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// this.#factory = factory;
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// }
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// accumulate(element: TElement) {
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// const key = this.#factory.keySelector(element);
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// const value = this.#factory.valueSelector(element);
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// this.#accumulator[key] = value;
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// }
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// finalize() {
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// return this.#accumulator;
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// }
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// }
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// export class ToMapCollectorFactory<TElement, TKey extends PropertyKey, TValue> implements CollectorFactory<TElement, Map<TKey, TValue>> {
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// readonly #keySelector: Converter<TElement, TKey>;
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// readonly #valueSelector: Converter<TElement, TValue>;
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// constructor(keySelector: Converter<TElement, TKey>, valueSelector: Converter<TElement, TValue>) {
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// this.#keySelector = keySelector;
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// this.#valueSelector = valueSelector;
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// }
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// get keySelector() {
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// return this.#keySelector;
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// }
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// get valueSelector() {
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// return this.#valueSelector;
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// }
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// initialize() {
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// return new ToMapCollectorInstance<TElement, TKey, TValue>(this);
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// }
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// }
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// class ToMapCollectorInstance<TElement, TKey extends PropertyKey, TValue> implements CollectorInstance<TElement, Map<TKey, TValue>> {
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// readonly #factory: ToMapCollectorFactory<TElement, TKey, TValue>;
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// readonly #accumulator = new Map<TKey, TValue>();
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// constructor(factory: ToMapCollectorFactory<TElement, TKey, TValue>) {
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// this.#factory = factory;
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// }
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// accumulate(element: TElement) {
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// const key = this.#factory.keySelector(element);
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// const value = this.#factory.valueSelector(element);
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// this.#accumulator.set(key, value);
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// }
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// finalize() {
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// return this.#accumulator;
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// }
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// }
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// export class ToSetCollectorFactory<TElement> implements CollectorFactory<TElement, Set<TElement>> {
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// initialize() {
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// return new ToSetCollectorInstance<TElement>();
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// }
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// }
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// class ToSetCollectorInstance<TElement> implements CollectorInstance<TElement, Set<TElement>> {
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// readonly #accumulator = new Set<TElement>();
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// accumulate(element: TElement) {
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// this.#accumulator.add(element);
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// }
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// finalize() {
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// return this.#accumulator;
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// }
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// }
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// export class JoinCollectorFactory implements CollectorFactory<any, string> {
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// readonly #delimiter: string;
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// readonly #prefix: string;
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// readonly #suffix: string;
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// constructor(delimiter?: string, prefix?: string, suffix?: string) {
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// this.#delimiter = delimiter ?? "";
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// this.#prefix = prefix ?? "";
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// this.#suffix = suffix ?? "";
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// }
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// accumulate(element: string) {
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// this.#accumulator.push(element);
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// }
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// finalize() {
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// return this.#prefix + this.#accumulator.join(this.#delimiter) + this.#suffix;
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// }
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// }
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// class JoinCollectorInstance implements CollectorInstance<any, string> {
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// readonly #delimiter: string;
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// readonly #prefix: string;
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// readonly #suffix: string;
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// readonly #accumulator: any[] = [];
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// constructor(delimiter: string, prefix: string, suffix: string) {
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// this.#delimiter = delimiter ?? "";
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// this.#prefix = prefix ?? "";
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// this.#suffix = suffix ?? "";
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// }
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// accumulate(element: string) {
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// this.#accumulator.push(element);
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// }
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// finalize() {
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// return this.#prefix + this.#accumulator.join(this.#delimiter) + this.#suffix;
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// }
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// }
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// export class SumCollectorInstance implements CollectorInstance<number, number> {
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// #accumulator = 0;
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// accumulate(element: number) {
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// this.#accumulator += element;
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// }
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// finalize() {
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// return this.#accumulator;
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// }
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// }
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// export class BigIntSumCollectorInstance implements CollectorInstance<bigint, bigint> {
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// #accumulator = 0n;
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// accumulate(element: bigint) {
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// this.#accumulator += element;
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// }
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// finalize() {
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// return this.#accumulator;
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// }
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// }
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// export class AverageCollectorInstance implements CollectorInstance<number, number> {
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// #count = 0;
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// #sum = 0;
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// accumulate(element: number) {
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// this.#count++;
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// this.#sum += element;
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// }
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// finalize() {
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// return this.#count === 0 ? 0 : this.#sum / this.#count;
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// }
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// }
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// export class BigIntAverageCollectorInstance implements CollectorInstance<bigint, bigint> {
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// #count = 0n;
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// #sum = 0n;
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// accumulate(element: bigint) {
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// this.#count++;
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// this.#sum += element;
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// }
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// finalize() {
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// return this.#count === 0n ? 0n : this.#sum / this.#count;
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// }
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// }
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57
src/collector/v2/index.ts
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57
src/collector/v2/index.ts
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// import { Converter } from "../../types.js";
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// import { ToArrayCollectorInstance, ToObjectCollectorInstance, ToMapCollectorInstance, ToSetCollectorInstance, JoinCollectorInstance, SumCollectorInstance, BigIntSumCollectorInstance, AverageCollectorInstance, BigIntAverageCollectorInstance, ToArrayCollectorFactory } from "./impl.js";
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// import { CollectorFactory } from "./types.js";
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// const toArrayCollectorFactory = new ToArrayCollectorFactory<any>();
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// export function toArray<TElement>(): CollectorFactory<TElement, TElement[]> {
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// return toArrayCollectorFactory;
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// }
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// export function toObject<TElement, TKey extends PropertyKey, TValue>(keySelector: Converter<TElement, TKey>, valueSelector: Converter<TElement, TValue>): CollectorFactory<TElement, Record<TKey, TValue>> {
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// return () => toObjectCollectorFactory<TElement, TKey, TValue>(keySelector, valueSelector);
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// }
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// export function toMap<TElement, TKey, TValue>(keySelector: Converter<TElement, TKey>, valueSelector: Converter<TElement, TValue>): CollectorFactory<TElement, Map<TKey, TValue>> {
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// return () => new ToMapCollectorInstance<TElement, TKey, TValue>(keySelector, valueSelector);
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// }
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// export function toSet<TElement>(): CollectorFactory<TElement, Set<TElement>> {
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// return () => new ToSetCollectorInstance<TElement>();
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// }
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// export function join(delimiter?: string, prefix?: string, suffix?: string): CollectorFactory<any, string> {
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// return () => new JoinCollectorInstance(delimiter, prefix, suffix);
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// }
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// function sumCollectorFactory() {
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// return new SumCollectorInstance();
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// }
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// export function sum(): CollectorFactory<number, number> {
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// return sumCollectorFactory;
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// }
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// function bigintSumCollectorFactory() {
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// return new BigIntSumCollectorInstance();
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// }
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// export function bigintSum(): CollectorFactory<bigint | number, bigint> {
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// return bigintSumCollectorFactory;
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// }
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// function averageCollectorFactory() {
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// return new AverageCollectorInstance();
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// }
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// export function average(): CollectorFactory<number, number> {
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// return averageCollectorFactory;
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// }
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// function bigintAverageCollectorFactory() {
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// return new BigIntAverageCollectorInstance();
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// }
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// export function bigintAverage(): CollectorFactory<bigint, bigint> {
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// return bigintAverageCollectorFactory;
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// }
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8
src/collector/v2/types.ts
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8
src/collector/v2/types.ts
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// export interface CollectorFactory<TElement, TResult> {
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// initialize(): CollectorInstance<TElement, TResult>;
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// }
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// export interface CollectorInstance<TElement, TResult> {
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// accumulate(element: TElement): void;
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// finalize(): TResult;
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// }
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