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52 lines
1.6 KiB
52 lines
1.6 KiB
'use strict'; |
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exports.__esModule = true; |
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const log = require('debug')('eslint-module-utils:ModuleCache'); |
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/** @type {import('./ModuleCache').ModuleCache} */ |
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class ModuleCache { |
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/** @param {typeof import('./ModuleCache').ModuleCache.prototype.map} map */ |
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constructor(map) { |
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this.map = map || /** @type {{typeof import('./ModuleCache').ModuleCache.prototype.map} */ new Map(); |
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} |
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/** @type {typeof import('./ModuleCache').ModuleCache.prototype.set} */ |
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set(cacheKey, result) { |
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this.map.set(cacheKey, { result, lastSeen: process.hrtime() }); |
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log('setting entry for', cacheKey); |
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return result; |
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} |
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/** @type {typeof import('./ModuleCache').ModuleCache.prototype.get} */ |
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get(cacheKey, settings) { |
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if (this.map.has(cacheKey)) { |
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const f = this.map.get(cacheKey); |
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// check freshness |
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// @ts-expect-error TS can't narrow properly from `has` and `get` |
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if (process.hrtime(f.lastSeen)[0] < settings.lifetime) { return f.result; } |
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} else { |
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log('cache miss for', cacheKey); |
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} |
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// cache miss |
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return undefined; |
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} |
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/** @type {typeof import('./ModuleCache').ModuleCache.getSettings} */ |
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static getSettings(settings) { |
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/** @type {ReturnType<typeof ModuleCache.getSettings>} */ |
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const cacheSettings = Object.assign({ |
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lifetime: 30, // seconds |
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}, settings['import/cache']); |
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// parse infinity |
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// @ts-expect-error the lack of type overlap is because we're abusing `cacheSettings` as a temporary object |
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if (cacheSettings.lifetime === '∞' || cacheSettings.lifetime === 'Infinity') { |
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cacheSettings.lifetime = Infinity; |
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} |
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return cacheSettings; |
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} |
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} |
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exports.default = ModuleCache;
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