| 1 | "use strict";
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| 2 | Object.defineProperty(exports, "__esModule", { value: true });
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| 3 | const fs = require("fs-extra");
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| 4 | async function updateCache(cachePath, cache) {
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| 5 | await fs.ensureFile(cachePath);
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| 6 | await fs.writeJSON(cachePath, cache);
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| 7 | }
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| 8 | exports.updateCache = updateCache;
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| 9 | function _mtime(f) {
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| 10 | return fs.statSync(f).mtime;
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| 11 | }
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| 12 | function _isStale(cachePath, cacheDuration) {
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| 13 | const past = new Date();
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| 14 | past.setSeconds(past.getSeconds() - cacheDuration);
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| 15 | return past.getTime() > _mtime(cachePath).getTime();
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| 16 | }
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| 17 | async function fetchCache(cachePath, cacheDuration, options) {
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| 18 | const cachePresent = fs.existsSync(cachePath);
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| 19 | if (cachePresent && !_isStale(cachePath, cacheDuration)) {
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| 20 | return fs.readJSON(cachePath);
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| 21 | }
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| 22 | const cache = await options.cacheFn();
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| 23 |
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| 24 | await updateCache(cachePath, cache);
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| 25 | return cache;
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| 26 | }
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| 27 | exports.fetchCache = fetchCache;
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