ioredis-mock/lib/commands/lpush.js

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

"use strict";

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

function _toConsumableArray(arr) { if (Array.isArray(arr)) { for (var i = 0, arr2 = Array(arr.length); i < arr.length; i++) { arr2[i] = arr[i]; } return arr2; } else { return Array.from(arr); } }

function lpush(key) {
  if (this.data.has(key) && !(this.data.get(key) instanceof Array)) {
    throw new Error("Key " + key + " does not contain a list");
  }
  var list = this.data.get(key) || [];

  for (var _len = arguments.length, values = Array(_len > 1 ? _len - 1 : 0), _key = 1; _key < _len; _key++) {
    values[_key - 1] = arguments[_key];
  }

  var length = list.unshift.apply(list, _toConsumableArray(values.reverse()));
  this.data.set(key, list);
  return length;
}