64 lines
1.9 KiB
JavaScript
64 lines
1.9 KiB
JavaScript
import _ from 'lodash';
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import jsonpack from 'jsonpack';
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import merge from 'deepmerge';
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import basex from 'base-x';
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class JBase62 {
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static #instance = null
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static getInstance = (characters = null) => {
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if (characters || !JBase62.#instance) {
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JBase62.#instance = new JBase62(characters)
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}
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return JBase62.#instance
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}
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#basex = null
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constructor(characters = "") {
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if (!characters && !JBase62.#instance) {
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throw new "characters is required"
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}
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if (characters) {
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this.#basex = basex(characters)
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} else if (JBase62.#instance) {
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return JBase62.#instance
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}
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}
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encode = (json = {}) => {
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const jsonString = JSON.stringify(json, (__, v) => v === undefined ? null : v)
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const binaryString = jsonpack.pack(jsonString)
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return this.#basex.encode(Buffer.from(binaryString))
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}
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decode = (base62 = '', defaultValue = {}) => {
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if (base62 === undefined || base62 === '') {
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return defaultValue
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}
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try {
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const binaryString = this.#basex.decode(base62).reduce((carry, bin) => carry + String.fromCharCode(bin), "")
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const jsonString = jsonpack.unpack(binaryString)
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return typeof (jsonString) === 'string' ? JSON.parse(jsonString) : jsonString
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} catch (e) {
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console.warn('JBase62.decode', e)
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return defaultValue
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}
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}
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get = (base62, path, defaultValue) => _.get(this.decode(base62), path, defaultValue)
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set = (base62, path, value) => {
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const obj = this.decode(base62)
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_.set(obj, path, value)
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return this.encode(obj)
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}
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assign = (base62, data = {}, isDeepMerge = false) => this.encode(isDeepMerge ? merge(this.decode(base62), data) : Object.assign(this.decode(base62), data))
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}
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export default JBase62
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