basant307/AI_Governance_Project

1'use strict';2 3exports.__esModule = true;4 5const log = require('debug')('eslint-module-utils:ModuleCache');6 7/** @type {import('./ModuleCache').ModuleCache} */8class ModuleCache {9  /** @param {typeof import('./ModuleCache').ModuleCache.prototype.map} map */10  constructor(map) {11    this.map = map || /** @type {{typeof import('./ModuleCache').ModuleCache.prototype.map} */ new Map();12  }13 14  /** @type {typeof import('./ModuleCache').ModuleCache.prototype.set} */15  set(cacheKey, result) {16    this.map.set(cacheKey, { result, lastSeen: process.hrtime() });17    log('setting entry for', cacheKey);18    return result;19  }20 21  /** @type {typeof import('./ModuleCache').ModuleCache.prototype.get} */22  get(cacheKey, settings) {23    if (this.map.has(cacheKey)) {24      const f = this.map.get(cacheKey);25      // check freshness26      // @ts-expect-error TS can't narrow properly from `has` and `get`27      if (process.hrtime(f.lastSeen)[0] < settings.lifetime) { return f.result; }28    } else {29      log('cache miss for', cacheKey);30    }31    // cache miss32    return undefined;33  }34 35  /** @type {typeof import('./ModuleCache').ModuleCache.getSettings} */36  static getSettings(settings) {37    /** @type {ReturnType<typeof ModuleCache.getSettings>} */38    const cacheSettings = Object.assign({39      lifetime: 30,  // seconds40    }, settings['import/cache']);41 42    // parse infinity43    // @ts-expect-error the lack of type overlap is because we're abusing `cacheSettings` as a temporary object44    if (cacheSettings.lifetime === '∞' || cacheSettings.lifetime === 'Infinity') {45      cacheSettings.lifetime = Infinity;46    }47 48    return cacheSettings;49  }50}51 52exports.default = ModuleCache;53