astronomy-bundle/cache/calculationCache.js

Bundle for astronomical calculations such as position of moon, sun and planets, sunrise, sunset or solar eclipses. Most of the calculations are based on Jean Meeus 'Astronomical Algorithms' book and the VSOP87 theory.

"use strict";
var __awaiter = (this && this.__awaiter) || function (thisArg, _arguments, P, generator) {
    function adopt(value) { return value instanceof P ? value : new P(function (resolve) { resolve(value); }); }
    return new (P || (P = Promise))(function (resolve, reject) {
        function fulfilled(value) { try { step(generator.next(value)); } catch (e) { reject(e); } }
        function rejected(value) { try { step(generator["throw"](value)); } catch (e) { reject(e); } }
        function step(result) { result.done ? resolve(result.value) : adopt(result.value).then(fulfilled, rejected); }
        step((generator = generator.apply(thisArg, _arguments || [])).next());
    });
};
Object.defineProperty(exports, "__esModule", { value: true });
exports.clearCachedCalculation = exports.getAsyncCachedCalculation = exports.getCachedCalculation = void 0;
const cache = {};
function getCachedCalculation(cacheKey, time, callback) {
    cacheKey = _getGeneratedCacheKey(cacheKey, time);
    if (cache.hasOwnProperty(cacheKey)) {
        return cache[cacheKey];
    }
    cache[cacheKey] = callback();
    return cache[cacheKey];
}
exports.getCachedCalculation = getCachedCalculation;
function getAsyncCachedCalculation(cacheKey, time, callback) {
    return __awaiter(this, void 0, void 0, function* () {
        cacheKey = _getGeneratedCacheKey(cacheKey, time);
        if (cache.hasOwnProperty(cacheKey)) {
            return cache[cacheKey];
        }
        cache[cacheKey] = yield callback();
        return cache[cacheKey];
    });
}
exports.getAsyncCachedCalculation = getAsyncCachedCalculation;
function clearCachedCalculation(cacheKey, time) {
    cacheKey = _getGeneratedCacheKey(cacheKey, time);
    if (cache.hasOwnProperty(cacheKey)) {
        delete cache[cacheKey];
    }
}
exports.clearCachedCalculation = clearCachedCalculation;
function _getGeneratedCacheKey(cacheKey, time) {
    return `${cacheKey}_${time};`;
}