@silverwind/ioredis-mock/lib/commands/lindex.js

This library emulates ioredis by performing all operations in-memory.

"use strict";

Object.defineProperty(exports, "__esModule", {
  value: true
});
exports.lindex = lindex;

function lindex(key, i) {
  if (this.data.has(key) && !(this.data.get(key) instanceof Array)) {
    throw new Error(`Key ${key} does not contain a list`);
  }

  const index = parseInt(i, 10);
  const list = this.data.get(key) || [];
  const item = list[index < 0 ? list.length + index : index];
  return item !== undefined ? item : null;
}