控制台出错：angular2和webpack服务器

Question

我的控制台中出现此错误。我需要帮助。当我运行我的应用程序时，我有这个错误：

<?php

// yours
function FoxJourneyLikeACamelsHump_1(string $string): string {
  $string = preg_replace("/[^[:alpha:][:space:]]/u", ' ', $string);
  $string = ucwords($string);
  $camelCase = preg_replace('/\s+/', '', $string);
  return $camelCase;
}

// mine v1
function FoxJourneyLikeACamelsHump_2(string $string): string {
    return implode('', array_map(function($word) {
        return ucfirst($word);
    }, preg_split("/[^[:alpha:]]/", $string, null, PREG_SPLIT_NO_EMPTY)));
}

// mine v2
function FoxJourneyLikeACamelsHump_3(string $string): string {
    $validItems = preg_split("/[^[:alpha:]]/u", $string, null, PREG_SPLIT_NO_EMPTY);
    $result = '';
    foreach($validItems as $item) {
        $result .= ucfirst($item);
    }
    return $result;
}

// Rizwan with a fix
function FoxJourneyLikeACamelsHump_4(string $string): string {
    $re = '/(?:\b|\d+)([a-z])|[\d+ +!.@]/';
    $result = preg_replace_callback($re,function ($matches) {
        return (isset($matches[1]) ? strtoupper($matches[1]) : '');
    },$string);
    return $result;
}


// $expected = "ThQuCkBrWnFXJumpsVRThLZyDG";
$test1 = 0;
$test2 = 0;
$test3 = 0;
$test4 = 0;

$loops = 100000;

$time_start = microtime(true);
for($i=0; $i<$loops; $i++) {
    $string = " Th3 qu!ck br0wn f0x jumps 0v3r th3 l@zy d0g. ";
    $is = FoxJourneyLikeACamelsHump_1($string);
    if($loops==1) echo $is."\n";
}
$time_end = microtime(true);
$test1 = $time_end - $time_start;

$time_start = microtime(true);
for($i=0; $i<$loops; $i++) {
    $string = " Th3 qu!ck br0wn f0x jumps 0v3r th3 l@zy d0g. ";
    $is = FoxJourneyLikeACamelsHump_2($string);
    if($loops==1) echo $is."\n";
}
$time_end = microtime(true);
$test2 = $time_end - $time_start;

$time_start = microtime(true);
for($i=0; $i<$loops; $i++) {
    $string = " Th3 qu!ck br0wn f0x jumps 0v3r th3 l@zy d0g. ";
    $is = FoxJourneyLikeACamelsHump_3($string);
    if($loops==1) echo $is."\n";
}
$time_end = microtime(true);
$test3 = $time_end - $time_start;

$time_start = microtime(true);
for($i=0; $i<$loops; $i++) {
    $string = " Th3 qu!ck br0wn f0x jumps 0v3r th3 l@zy d0g. ";
    $is = FoxJourneyLikeACamelsHump_4($string);
    if($loops==1) echo $is."\n";
}
$time_end = microtime(true);
$test4 = $time_end - $time_start;

var_dump(array('Test1'=>$test1, 'Test2'=>$test2, 'Test3'=>$test3, 'Test4'=>$test4));