kopia lustrzana https://github.com/FacilMap/facilmap
255 wiersze
7.7 KiB
TypeScript
255 wiersze
7.7 KiB
TypeScript
import { cloneDeep, isEqual } from "lodash-es";
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import decodeURIComponent from "decode-uri-component";
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export function quoteHtml(str: string | number): string {
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return `${str}`
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.replace(/&/g, "&")
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.replace(/</g, "<")
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.replace(/>/g, ">")
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.replace(/"/g, """)
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.replace(/'/g, "'")
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.replace(/\n/g, " ")
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.replace(/\r/g, " ")
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.replace(/\t/g, "	");
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}
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export function quoteRegExp(str: string): string {
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return `${str}`.replace(/[.?*+^$[\]\\(){}|-]/g, "\\$&");
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}
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export function makeTextColour(backgroundColour: string, threshold = 0.5): string {
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return (getBrightness(backgroundColour) <= threshold) ? "#ffffff" : "#000000";
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}
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export function getBrightness(colour: string): number {
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colour = colour.replace(/^#/, '');
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const r = parseInt(colour.substr(0, 2), 16)/255;
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const g = parseInt(colour.substr(2, 2), 16)/255;
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const b = parseInt(colour.substr(4, 2), 16)/255;
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// See http://stackoverflow.com/a/596243/242365
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return Math.sqrt(0.241*r*r + 0.691*g*g + 0.068*b*b);
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}
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export function isBright(colour: string): boolean {
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return getBrightness(colour) > 0.7;
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}
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export function overwriteObject(from: Record<keyof any, any>, to: Record<keyof any, any>): void {
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for(const i in to)
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delete to[i];
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for(const i in from)
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to[i] = from[i];
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}
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/**
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* Converts an object { entry: { subentry: "value" } } into { "entry.subentry": "value" }
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* @param obj {Object}
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* @return {Object}
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*/
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export function flattenObject(obj: Record<keyof any, any>, _prefix = ""): Record<keyof any, any> {
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const ret: Record<keyof any, any> = { };
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for(const i in obj) {
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if(typeof obj[i] == "object")
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Object.assign(ret, flattenObject(obj[i], _prefix + i + "."));
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else
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ret[_prefix + i] = obj[i];
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}
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return ret;
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}
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export interface ObjectDiffItem {
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index: string;
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before: any;
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after: any;
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}
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export function getObjectDiff(obj1: Record<keyof any, any>, obj2: Record<keyof any, any>): Array<ObjectDiffItem> {
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const flat1 = flattenObject(obj1);
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const flat2 = flattenObject(obj2);
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const ret: Array<ObjectDiffItem> = [ ];
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for(const i in flat1) {
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if(flat1[i] != flat2[i] && !(!flat1[i] && !flat2[i]))
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ret.push({ index: i, before: flat1[i], after: flat2[i] });
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}
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for(const i in flat2) {
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if(!(i in flat1) && !(!flat1[i] && !flat2[i]))
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ret.push({ index: i, before: undefined, after: flat2[i] });
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}
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return ret;
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}
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export function decodeQueryString(str: string): Record<string, string> {
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const obj: Record<string, string> = { };
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for(const segment of str.replace(/^\?/, "").split(/[;&]/)) {
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if (segment !== "") {
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const pair = segment.split("=");
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obj[decodeURIComponent(pair[0])] = decodeURIComponent(pair[1] ?? "");
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}
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}
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return obj;
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}
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export function encodeQueryString(obj: Record<string, string>): string {
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const pairs = [ ];
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for(const i in obj) {
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pairs.push(encodeURIComponent(i) + "=" + encodeURIComponent(obj[i]));
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}
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return pairs.join("&");
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}
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export function* numberKeys(obj: Record<number, any>): Generator<number> {
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for (const idx of Object.keys(obj)) {
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// https://stackoverflow.com/a/175787/242365
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const number = Number(idx);
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if (!isNaN(number) && !isNaN(parseFloat(idx)))
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yield number;
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}
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}
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export function getProperty<K, V, T extends Map<K, V>>(obj: T, key: K): V;
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export function getProperty<T, K extends keyof T>(obj: T, key: K): T[K]; // eslint-disable-line no-redeclare
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export function getProperty(obj: any, key: any): any { // eslint-disable-line no-redeclare
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if (Object.getPrototypeOf(obj)?.get)// This is an ES6 map
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return obj.get(key);
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else
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return Object.prototype.hasOwnProperty.call(obj, key) ? obj[key] : (undefined as any);
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}
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export async function sleep(ms: number): Promise<void> {
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await new Promise<void>((resolve) => {
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setTimeout(resolve, ms);
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});
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}
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/**
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* Performs a 3-way merge. Takes the difference between oldObject and newObject and applies it to targetObject.
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* @param oldObject {Object}
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* @param newObject {Object}
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* @param targetObject {Object}
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*/
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export function mergeObject<T extends Record<keyof any, any>>(oldObject: T | undefined, newObject: T, targetObject: T): void {
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for(const i of new Set<keyof T & (number | string)>([...Object.keys(newObject), ...Object.keys(targetObject)])) {
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if(
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Object.prototype.hasOwnProperty.call(newObject, i) && typeof newObject[i] == "object" && newObject[i] != null
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&& Object.prototype.hasOwnProperty.call(targetObject, i) && typeof targetObject[i] == "object" && targetObject[i] != null
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)
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mergeObject(oldObject && oldObject[i], newObject[i], targetObject[i]);
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else if(oldObject == null || !isEqual(oldObject[i], newObject[i]))
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targetObject[i] = cloneDeep(newObject[i]);
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}
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}
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export function getSafeFilename(fname: string): string {
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return fname.replace(/[\\/:*?"<>|]+/g, '_');
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}
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export function parseMapUrl(url: string, baseUrl: string): { mapId: string; hash: string } | undefined {
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if (url.startsWith(baseUrl)) {
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const m = url.slice(baseUrl.length).match(/^([^/]+)(\/table)?(\?|#|$)/);
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if (m) {
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const hashIdx = url.indexOf("#");
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return {
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mapId: decodeURIComponent(m[1]),
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hash: hashIdx === -1 ? "" : url.substr(hashIdx)
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};
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}
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}
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}
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export class RetryError extends Error {
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constructor(public cause: Error) {
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super();
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}
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}
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export function throttledBatch<Args extends any[], Result>(
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getBatch: (batch: Args[]) => Promise<Result[]>,
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{ delayMs, maxSize, maxRetries = 3, noParallel = false }: {
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delayMs: number | (() => number);
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maxSize: number | (() => number);
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maxRetries?: number;
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noParallel?: boolean;
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}
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): ((...args: Args) => Promise<Result>) {
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let lastTime = -Infinity;
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let isScheduled = false;
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let batch: Array<{ args: Args; resolve: (result: Result) => void; reject: (err: any) => void; retryAttempt: number }> = [];
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const handleBatch = () => {
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lastTime = Date.now();
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isScheduled = false;
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const thisBatch = batch.splice(0, typeof maxSize === "function" ? maxSize() : maxSize);
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getBatch(thisBatch.map((it) => it.args)).then((results) => {
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for (let i = 0; i < thisBatch.length; i++) {
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thisBatch[i].resolve(results[i]);
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}
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}).catch((err) => {
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if (err instanceof RetryError) {
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for (const { reject } of thisBatch.filter((it) => it.retryAttempt >= maxRetries)) {
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reject(err.cause);
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}
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batch.splice(0, 0, ...thisBatch.filter((it) => it.retryAttempt < maxRetries).map((it) => ({ ...it, retryAttempt: it.retryAttempt + 1 })));
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} else {
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for (const { reject } of thisBatch) {
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reject(err);
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}
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}
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}).finally(() => {
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schedule();
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});
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if (!noParallel) {
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schedule();
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}
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};
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const schedule = () => {
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if (!isScheduled && batch.length > 0) {
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const delay = typeof delayMs === "function" ? delayMs() : delayMs;
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setTimeout(handleBatch, Math.max(0, lastTime + delay - Date.now()));
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isScheduled = true;
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}
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};
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return async (...args) => {
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return await new Promise<Result>((resolve, reject) => {
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batch.push({ args, resolve, reject, retryAttempt: 0 });
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schedule();
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});
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};
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}
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/**
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* Given a list of objects whose order is defined by an index field, returns how the index field of each object needs to be updated
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* in order to create a new item at the given index (id === undefined) or move an existing item to the new index (id !== undefined).
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*/
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export function insertIdx<IDType>(objects: Array<{ id: IDType; idx: number }>, id: IDType | undefined, insertAtIdx: number): Array<{ id: IDType; oldIdx: number; newIdx: number }> {
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const result = objects.map((obj) => ({ id: obj.id, oldIdx: obj.idx, newIdx: obj.idx }));
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const insert = (thisId: IDType | undefined, thisIdx: number) => {
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for (const obj of result) {
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if ((thisId == null || obj.id !== thisId) && obj.newIdx === thisIdx) {
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insert(obj.id, obj.newIdx + 1);
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obj.newIdx++;
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}
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}
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};
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insert(id, insertAtIdx);
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if (id != null) {
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for (const obj of result) {
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if (obj.id === id) {
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obj.newIdx = insertAtIdx;
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}
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}
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}
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return result;
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} |