Run string as Function with args from web worker

Caller.js

  sendCode() {
    const code = this.state.code;
    const lastRowIndex = this.refs.aceEditor.editor.session.getLength() - 1;
    const functionBody = code.split('\n').filter((l, i) => { if(!(i == 0 || i == lastRowIndex )){ return l }  }).join("\n");   
    const question = this.state.question;
    const functionName = question.functionName;
    const params = question.args.map(q => q.name);
    const testArgs = question.tests.map(t => t.input);
    const interpreter = new Worker();
    
    interpreter.onmessage = (e) => { this.getCodeResult(e) }
    

    this.timeout = setTimeout((() => {
      this.getCodeResult({
        data: {
          result: null,
          error: 'Function timed out'
        },
      })
    }).bind(this), 6000);
    interpreter.postMessage({ params, functionName, code: functionBody, args: testArgs });
  }

WebWorker.js

onmessage = (e) => {
	console.log("data" + e.data);
	console.log("code: "+ e.data.code);
	console.log("argsCount: " + e.data.args[0].length);
	try {
		const name = e.data.functionName;
		this[name] = Function(...e.data.params, e.data.code);
		const argArray = e.data.args;
		let results = [];
		let errors = [];
		for(let i = 0; i < argArray.length; i++){
			const args = argArray[i];
			let result; 
			try {
				result = { value: this[name](...args) };
			} catch(testException) {
				result = { error: `Error executing function with ${JSON.stringify(args)}: ${testException.message}` };
			}
			const response = Object.assign({ args }, { result });
			results.push(response);
		}
		postMessage({ results, errors });
	} catch(ex) {
		postMessage({ results: null, error: [`Error building function: ${ex.message}`] });
	}
}