52 lines
802 B
JavaScript
52 lines
802 B
JavaScript
class Cache {
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constructor () {
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this.kv = {}
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}
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/**
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* @param {string} key
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* @param {string} value
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* @param {boolean?} noOverride
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*/
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set (key, value, noOverride) {
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if (noOverride && key in this.kv) {
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throw new Error('key exists')
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}
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this.kv[key] = value
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}
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/**
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* @param {string} key
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* @return {string?}
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*/
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get (key) {
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return this.kv[key] || null
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}
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/**
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* @param {string[]} keys
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*/
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del (...keys) {
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for (const key of keys) {
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delete this.kv[key]
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}
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}
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}
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let cache = null
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exports.new = function () {
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if (cache) throw new Error('cache already initiate')
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cache = new Cache()
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return cache
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}
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/**
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* @return {Cache}
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*/
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exports.get = function () {
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if (!cache) throw new Error('cache not initiate')
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return cache
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}
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