<pre class="shiki github-dark shaku"><code>/** * @param {any} target * @param {any[]} sources * @return {object} */function objectAssign(target, ...sources) { if(!target) throw new Error(); if(typeof target === 'string') return new String(target); if(typeof target === 'number') return new Number(target); if(typeof target === 'boolean') return new Boolean(target); for(const source of sources) { if(!source) continue; for(const key in source) { if(!source[key]) continue; if(source.hasOwnProperty(key)) { const objDesc = Object.getOwnPropertyDescriptor(target, key); if (objDesc &amp;&amp; des.writable == false) throw new Error(); target[key] = source[key]; } } for(const key of Object.getOwnPropertySymbols(source)) { if(!source[key]) continue; if(source.hasOwnProperty(key)) { target[key] = source[key]; } } } return target;}</code></pre>

This is my accepted solution

The Object.assign() method copies all enumerable own properties from one or more source objects to a target object. It returns the target object. (sou…