@nepse-helper/core/dist/helpers/token.helper.js

A helper library for NEPSE

import { ENDPOINTS, USER_AGENT } from "../consts/api";
export class TokenHelper {
    wasm;
    static _instance;
    constructor(wasm) {
        this.wasm = wasm;
    }
    static async instance() {
        if (!this._instance) {
            const buffer = await fetch(`${ENDPOINTS.baseUrl}/${ENDPOINTS.assets.prod.cssWasm}`, {
                headers: {
                    Referer: ENDPOINTS.baseUrl,
                    "User-Agent": USER_AGENT,
                },
            }).then((res) => res.arrayBuffer());
            const wasm = await WebAssembly.instantiate(buffer);
            const exports = wasm.instance.exports;
            this._instance = new TokenHelper(exports);
        }
        return this._instance;
    }
    encodeAccessToken(accessToken, salts) {
        return (accessToken.slice(0, this.wasm.cdx(salts[0], salts[1], salts[2], salts[3], salts[4])) +
            accessToken.slice(this.wasm.cdx(salts[0], salts[1], salts[2], salts[3], salts[4]) + 1, this.wasm.rdx(salts[0], salts[1], salts[2], salts[3], salts[4])) +
            accessToken.slice(this.wasm.rdx(salts[0], salts[1], salts[2], salts[3], salts[4]) + 1, this.wasm.bdx(salts[0], salts[1], salts[2], salts[3], salts[4])) +
            accessToken.slice(this.wasm.bdx(salts[0], salts[1], salts[2], salts[3], salts[4]) + 1, this.wasm.ndx(salts[0], salts[1], salts[2], salts[3], salts[4])) +
            accessToken.slice(this.wasm.ndx(salts[0], salts[1], salts[2], salts[3], salts[4]) + 1, this.wasm.mdx(salts[0], salts[1], salts[2], salts[3], salts[4])) +
            accessToken.slice(this.wasm.mdx(salts[0], salts[1], salts[2], salts[3], salts[4]) + 1));
    }
    encodeRefreshToken(refreshToken, salts) {
        return (refreshToken.slice(0, this.wasm.cdx(salts[1], salts[0], salts[2], salts[4], salts[3])) +
            refreshToken.slice(this.wasm.cdx(salts[1], salts[0], salts[2], salts[4], salts[3]) + 1, this.wasm.rdx(salts[1], salts[0], salts[2], salts[3], salts[4])) +
            refreshToken.slice(this.wasm.rdx(salts[1], salts[0], salts[2], salts[3], salts[4]) + 1, this.wasm.bdx(salts[1], salts[0], salts[3], salts[2], salts[4])) +
            refreshToken.slice(this.wasm.bdx(salts[1], salts[0], salts[3], salts[2], salts[4]) + 1, this.wasm.ndx(salts[1], salts[0], salts[3], salts[2], salts[4])) +
            refreshToken.slice(this.wasm.ndx(salts[1], salts[0], salts[3], salts[2], salts[4]) + 1, this.wasm.mdx(salts[1], salts[0], salts[3], salts[2], salts[4])) +
            refreshToken.slice(this.wasm.mdx(salts[1], salts[0], salts[3], salts[2], salts[4]) + 1));
    }
}