@graphql-eslint/eslint-plugin/esm/cache.js

GraphQL plugin for ESLint

// Based on the `eslint-plugin-import`'s cache
// https://github.com/import-js/eslint-plugin-import/blob/main/utils/ModuleCache.js
import debugFactory from 'debug';
const log = debugFactory('graphql-eslint:ModuleCache');
export class ModuleCache {
    constructor() {
        this.map = new Map();
    }
    set(cacheKey, result) {
        this.map.set(cacheKey, { lastSeen: process.hrtime(), result });
        log('setting entry for', cacheKey);
    }
    get(cacheKey, settings = { lifetime: 10 /* seconds */ }) {
        const value = this.map.get(cacheKey);
        if (!value) {
            log('cache miss for', cacheKey);
            return;
        }
        const { lastSeen, result } = value;
        // check freshness
        if (process.env.NODE /* don't check for ESLint CLI */ ||
            process.hrtime(lastSeen)[0] < settings.lifetime) {
            return result;
        }
    }
}