BaseElement::class() - Code Metrics - Inspection of "Allow null children" - spatie/laravel-html - Measure and Improve Code Quality continuously with Scrutinizer

Completed

Push — master ( 66f49a...94f063 )

by Sebastian

created 2018-04-04 08:49 UTC

BaseElement::class() A

↳ Parent: BaseElement

Complexity

Conditions	1
Paths	1

Size

Total Lines	4
Code Lines	2

Duplication

Lines	0
Ratio	0 %

Importance

Changes

Metric	Value
dl	0
loc	4
rs	10
c	0
b	0
f	0
cc	1
eloc	2
nc	1
nop	1

<?php

namespace Spatie\Html;

use BadMethodCallException;
use Illuminate\Support\Collection;
use Illuminate\Support\HtmlString;
use Spatie\Html\Exceptions\MissingTag;
use Spatie\Html\Exceptions\InvalidHtml;
use Illuminate\Support\Traits\Macroable;
use Spatie\Html\Exceptions\InvalidChild;
use Illuminate\Contracts\Support\Htmlable;

abstract class BaseElement implements Htmlable, HtmlElement
{
    use Macroable {
        __call as __macro_call;
    }

    /** @var string */
    protected $tag;

    /** @var \Spatie\Html\Attributes */
    protected $attributes;

    /** @var \Illuminate\Support\Collection */
    protected $children;

    public function __construct()
    {
        if (empty($this->tag)) {
            throw MissingTag::onClass(static::class);
        }

        $this->attributes = new Attributes();
        $this->children = new Collection();
    }

    public static function create()
    {
        return new static();
    }

    /**
     * @param string $attribute
     * @param string|null $value
     *
     * @return static
     */
    public function attribute($attribute, $value = null)
    {
        $element = clone $this;

        $element->attributes->setAttribute($attribute, (string) $value);

        return $element;
    }

    /**
     * @param iterable $attributes
     *
     * @return static
     */
    public function attributes($attributes)
    {
        $element = clone $this;

        $element->attributes->setAttributes($attributes);

        return $element;
    }

    /**
     * @param string $attribute
     *
     * @return static
     */
    public function forgetAttribute($attribute)
    {
        $element = clone $this;

        $element->attributes->forgetAttribute($attribute);

        return $element;
    }

    /**
     * @param string $attribute
     * @param mixed $fallback
     *
     * @return mixed
     */
    public function getAttribute($attribute, $fallback = null)
    {
        return $this->attributes->getAttribute($attribute, $fallback);
    }

    /**
     * @param string $attribute
     *
     * @return bool
     */
    public function hasAttribute($attribute)
    {
        return $this->attributes->hasAttribute($attribute);
    }

    /**
     * @param iterable|string $class
     *
     * @return static
     */
    public function class($class)

    {
        return $this->addClass($class);
    }

    /**
     * Alias for `class`.
     *
     * @param iterable|string $class
     *
     * @return static
     */
    public function addClass($class)
    {
        $element = clone $this;

        $element->attributes->addClass($class);

        return $element;
    }

    /**
     * @param string $id
     *
     * @return static
     */
    public function id($id)
    {
        return $this->attribute('id', $id);
    }

    /**
     * @param array|string|null $style
     *
     * @return static
     */
    public function style($style)
    {
        if (is_array($style)) {
            $style = implode('; ', array_map(function ($value, $attribute) {
                return "{$attribute}: {$value}";
            }, $style, array_keys($style)));
        }

        return $this->attribute('style', $style);
    }

    /**
     * @param string $name
     * @param string $value
     *
     * @return static
     */
    public function data($name, $value)
    {
        return $this->attribute("data-{$name}", $value);
    }

    /**
     * @param \Spatie\Html\HtmlElement|string|iterable|null $children
     * @param callable|null $mapper
     *
     * @return static
     */
    public function addChildren($children, $mapper = null)

    {
        if (is_null($children)) {
            return $this;
        }

        $children = $this->parseChildren($children, $mapper);

        $element = clone $this;

        $element->children = $element->children->merge($children);

        return $element;
    }

    /**
     * Alias for `addChildren`.
     *
     * @param \Spatie\Html\HtmlElement|string|iterable|null $children
/**
 * @param array $germany
 * @param array $island
 * @param array $italy
 */
function finale($germany, $island) {
    return "2:1";
}
     * @param callable|null $mapper
     *
     * @return static
     */
    public function addChild($child, $mapper = null)
    {
        return $this->addChildren($child, $mapper);
    }

    /**
     * Alias for `addChildren`.
     *
     * @param \Spatie\Html\HtmlElement|string|iterable|null $children
/**
 * @param array $germany
 * @param array $island
 * @param array $italy
 */
function finale($germany, $island) {
    return "2:1";
}
     * @param callable|null $mapper
     *
     * @return static
     */
    public function child($child, $mapper = null)
    {
        return $this->addChildren($child, $mapper);
    }

    /**
     * Alias for `addChildren`.
     *
     * @param \Spatie\Html\HtmlElement|string|iterable|null $children
     * @param callable|null $mapper
     *
     * @return static
     */
    public function children($children, $mapper = null)
    {
        return $this->addChildren($children, $mapper);
    }

    /**
     * Replace all children with an array of elements.
     *
     * @param \Spatie\Html\HtmlElement[] $children
     * @param callable|null $mapper
     *
     * @return static
     */
    public function setChildren($children, $mapper = null)
    {
        $element = clone $this;

        $element->children = new Collection();

        return $element->addChildren($children, $mapper);
function acceptsInteger($int) { }

$x = '123'; // string "123"

// Instead of
acceptsInteger($x);

// we recommend to use
acceptsInteger((integer) $x);
    }

    /**
     * @param \Spatie\Html\HtmlElement|string|iterable|null $children
     * @param callable|null $mapper
     *
     * @return static
     */
    public function prependChildren($children, $mapper = null)

    {
        $children = $this->parseChildren($children, $mapper);

        $element = clone $this;

        $element->children = $children->merge($element->children);

        return $element;
    }

    /**
     * Alias for `prependChildren`.
     *
     * @param \Spatie\Html\HtmlElement|string|iterable|null $children
     * @param callable|null $mapper
     *
     * @return static
     */
    public function prependChild($children, $mapper = null)
    {
        return $this->prependChildren($children, $mapper);
    }

    /**
     * @param string|null $text
     *
     * @return static
     */
    public function text($text)
    {
        return $this->html(htmlentities($text, ENT_QUOTES, 'UTF-8', false));
    }

    /**
     * @param string|null $html
     *
     * @return static
     */
    public function html($html)
    {
        if ($this->isVoidElement()) {
            throw new InvalidHtml("Can't set inner contents on `{$this->tag}` because it's a void element");
        }

        return $this->setChildren($html);
function acceptsInteger($int) { }

$x = '123'; // string "123"

// Instead of
acceptsInteger($x);

// we recommend to use
acceptsInteger((integer) $x);
    }

    /**
     * Condintionally transform the element. Note that since elements are
     * immutable, you'll need to return a new instance from the callback.
     *
     * @param bool $condition
     * @param callable $callback
     */
    public function if(bool $condition, callable $callback)

    {
        if ($condition) {
            return $callback($this);
        }

        return $this;
class A {
    var $property;
}
    }

    /**
     * @return \Illuminate\Contracts\Support\Htmlable
     */
    public function open()
    {
        $tag = $this->attributes->isEmpty()
            ? '<'.$this->tag.'>'
            : "<{$this->tag} {$this->attributes->render()}>";

        $children = $this->children->map(function ($child): string {
            if ($child instanceof HtmlElement) {
                return $child->render();
            }

            if (is_null($child)) {
                return '';
            }

            if (is_string($child)) {
                return $child;
            }

            throw InvalidChild::childMustBeAnHtmlElementOrAString();
        })->implode('');

        return new HtmlString($tag.$children);
    }

    /**
     * @return \Illuminate\Contracts\Support\Htmlable
     */
    public function close()
    {
        return new HtmlString(
            $this->isVoidElement()
                ? ''
                : "</{$this->tag}>"
        );
    }

    /**
     * @return \Illuminate\Contracts\Support\Htmlable
     */
    public function render()
    {
        return new HtmlString(
            $this->open().$this->close()
        );
    }

    public function isVoidElement(): bool
    {
        return in_array($this->tag, [
            'area', 'base', 'br', 'col', 'embed', 'hr',
            'img', 'input', 'keygen', 'link', 'menuitem',
            'meta', 'param', 'source', 'track', 'wbr',
        ]);
    }

    /**
     * Dynamically handle calls to the class.
     * Check for methods finishing by If or fallback to Macroable.
     *
     * @param  string  $method
/**
 * @param array $germany
 * @param array $island
 * @param array $italy
 */
function finale($germany, $island) {
    return "2:1";
}
     * @param  array   $parameters
/**
 * @param array $germany
 * @param array $island
 * @param array $italy
 */
function finale($germany, $island) {
    return "2:1";
}
     * @return mixed
     *
     * @throws BadMethodCallException
     */
    public function __call($name, $arguments)
    {
        if (ends_with($name, 'If')) {
            $name = str_replace('If', '', $name);
            if (! method_exists($this, $name)) {
                throw new BadMethodCallException("$name is not a valid method for this class");
            }

            $condition = (bool) array_shift($arguments);

            return $condition ?
                $this->{$name}(...$arguments) :
                $this;
        }

        return $this->__macro_call($name, $arguments);
    }

    public function __clone()
    {
        $this->attributes = clone $this->attributes;
        $this->children = clone $this->children;
    }

    public function __toString(): string
    {
        return $this->render();
    }

    public function toHtml(): string
    {
        return $this->render();
    }

    protected function parseChildren($children, $mapper = null): Collection
    {
        if ($children instanceof HtmlElement) {
            $children = [$children];
        }

        $children = Collection::make($children);

        if ($mapper) {
            $children = $children->map($mapper);
        }

        $this->guardAgainstInvalidChildren($children);

        return $children;
    }

    protected function guardAgainstInvalidChildren(Collection $children)
    {
        foreach ($children as $child) {
            if ((! $child instanceof HtmlElement) && (! is_string($child)) && (! is_null($child))) {
                throw InvalidChild::childMustBeAnHtmlElementOrAString();
            }
        }
    }
}


1		<?php
2
3		namespace Spatie\Html;
4
5		use BadMethodCallException;
6		use Illuminate\Support\Collection;
7		use Illuminate\Support\HtmlString;
8		use Spatie\Html\Exceptions\MissingTag;
9		use Spatie\Html\Exceptions\InvalidHtml;
10		use Illuminate\Support\Traits\Macroable;
11		use Spatie\Html\Exceptions\InvalidChild;
12		use Illuminate\Contracts\Support\Htmlable;
13
14		abstract class BaseElement implements Htmlable, HtmlElement
15		{
16		use Macroable {
17		__call as __macro_call;
18		}
19
20		/** @var string */
21		protected $tag;
22
23		/** @var \Spatie\Html\Attributes */
24		protected $attributes;
25
26		/** @var \Illuminate\Support\Collection */
27		protected $children;
28
29		public function __construct()
30		{
31		if (empty($this->tag)) {
32		throw MissingTag::onClass(static::class);
33		}
34
35		$this->attributes = new Attributes();
36		$this->children = new Collection();
37		}
38
39		public static function create()
40		{
41		return new static();
42		}
43
44		/**
45		* @param string $attribute
46		* @param string\|null $value
47		*
48		* @return static
49		*/
50		public function attribute($attribute, $value = null)
51		{
52		$element = clone $this;
53
54		$element->attributes->setAttribute($attribute, (string) $value);
55
56		return $element;
57		}
58
59		/**
60		* @param iterable $attributes
61		*
62		* @return static
63		*/
64		public function attributes($attributes)
65		{
66		$element = clone $this;
67
68		$element->attributes->setAttributes($attributes);
69
70		return $element;
71		}
72
73		/**
74		* @param string $attribute
75		*
76		* @return static
77		*/
78		public function forgetAttribute($attribute)
79		{
80		$element = clone $this;
81
82		$element->attributes->forgetAttribute($attribute);
83
84		return $element;
85		}
86
87		/**
88		* @param string $attribute
89		* @param mixed $fallback
90		*
91		* @return mixed
92		*/
93		public function getAttribute($attribute, $fallback = null)
94		{
95		return $this->attributes->getAttribute($attribute, $fallback);
96		}
97
98		/**
99		* @param string $attribute
100		*
101		* @return bool
102		*/
103		public function hasAttribute($attribute)
104		{
105		return $this->attributes->hasAttribute($attribute);
106		}
107
108		/**
109		* @param iterable\|string $class
110		*
111		* @return static
112		*/
113		public function class($class)
		0 ignored issues – show Coding Style introduced 2017-08-03 11:26 UTC by Report Bug Copy Issue Report Possible parse error: non-abstract method defined as abstract Loading history... Coding Style introduced 2017-08-03 11:26 UTC by Report Bug Copy Issue Report It is generally advisable to only define one property per statement. Only declaring a single property per statement allows you to later on add doc comments more easily. It is also recommended by PSR2, so it is a common style that many people expect. Loading history...
114		{
115		return $this->addClass($class);
116		}
117
118		/**
119		* Alias for `class`.
120		*
121		* @param iterable\|string $class
122		*
123		* @return static
124		*/
125		public function addClass($class)
126		{
127		$element = clone $this;
128
129		$element->attributes->addClass($class);
130
131		return $element;
132		}
133
134		/**
135		* @param string $id
136		*
137		* @return static
138		*/
139		public function id($id)
140		{
141		return $this->attribute('id', $id);
142		}
143
144		/**
145		* @param array\|string\|null $style
146		*
147		* @return static
148		*/
149		public function style($style)
150		{
151		if (is_array($style)) {
152		$style = implode('; ', array_map(function ($value, $attribute) {
153		return "{$attribute}: {$value}";
154		}, $style, array_keys($style)));
155		}
156
157		return $this->attribute('style', $style);
158		}
159
160		/**
161		* @param string $name
162		* @param string $value
163		*
164		* @return static
165		*/
166		public function data($name, $value)
167		{
168		return $this->attribute("data-{$name}", $value);
169		}
170
171		/**
172		* @param \Spatie\Html\HtmlElement\|string\|iterable\|null $children
173		* @param callable\|null $mapper
174		*
175		* @return static
176		*/
177	View Code Duplication	public function addChildren($children, $mapper = null)
		0 ignored issues – show Duplication introduced 2017-08-03 11:26 UTC by Report Bug Copy Issue Report This method seems to be duplicated in your project. Duplicated code is one of the most pungent code smells. If you need to duplicate the same code in three or more different places, we strongly encourage you to look into extracting the code into a single class or operation. You can also find more detailed suggestions in the “Code” section of your repository. Loading history...
178		{
179		if (is_null($children)) {
180		return $this;
181		}
182
183		$children = $this->parseChildren($children, $mapper);
184
185		$element = clone $this;
186
187		$element->children = $element->children->merge($children);
188
189		return $element;
190		}
191
192		/**
193		* Alias for `addChildren`.
194		*
195		* @param \Spatie\Html\HtmlElement\|string\|iterable\|null $children
		0 ignored issues – show Bug introduced 2017-03-31 11:00 UTC by Report Bug Copy Issue Report There is no parameter named `$children`. Was it maybe removed? This check looks for PHPDoc comments describing methods or function parameters that do not exist on the corresponding method or function. Consider the following example. The parameter `$italy` is not defined by the method `finale(...)`. /** * @param array $germany * @param array $island * @param array $italy */ function finale($germany, $island) { return "2:1"; } The most likely cause is that the parameter was removed, but the annotation was not. Loading history...
196		* @param callable\|null $mapper
197		*
198		* @return static
199		*/
200		public function addChild($child, $mapper = null)
201		{
202		return $this->addChildren($child, $mapper);
203		}
204
205		/**
206		* Alias for `addChildren`.
207		*
208		* @param \Spatie\Html\HtmlElement\|string\|iterable\|null $children
		0 ignored issues – show Bug introduced 2017-03-31 11:00 UTC by Report Bug Copy Issue Report There is no parameter named `$children`. Was it maybe removed? This check looks for PHPDoc comments describing methods or function parameters that do not exist on the corresponding method or function. Consider the following example. The parameter `$italy` is not defined by the method `finale(...)`. /** * @param array $germany * @param array $island * @param array $italy */ function finale($germany, $island) { return "2:1"; } The most likely cause is that the parameter was removed, but the annotation was not. Loading history...
209		* @param callable\|null $mapper
210		*
211		* @return static
212		*/
213		public function child($child, $mapper = null)
214		{
215		return $this->addChildren($child, $mapper);
216		}
217
218		/**
219		* Alias for `addChildren`.
220		*
221		* @param \Spatie\Html\HtmlElement\|string\|iterable\|null $children
222		* @param callable\|null $mapper
223		*
224		* @return static
225		*/
226		public function children($children, $mapper = null)
227		{
228		return $this->addChildren($children, $mapper);
229		}
230
231		/**
232		* Replace all children with an array of elements.
233		*
234		* @param \Spatie\Html\HtmlElement[] $children
235		* @param callable\|null $mapper
236		*
237		* @return static
238		*/
239		public function setChildren($children, $mapper = null)
240		{
241		$element = clone $this;
242
243		$element->children = new Collection();
244
245		return $element->addChildren($children, $mapper);
		0 ignored issues – show Documentation introduced 2017-10-11 10:45 UTC by Report Bug Copy Issue Report `$children` is of type `array<integer,object<Spatie\Html\HtmlElement>>`, but the function expects a `object<Spatie\Html\HtmlE...tie\Html\iterable>\|null`. It seems like the type of the argument is not accepted by the function/method which you are calling. In some cases, in particular if PHP’s automatic type-juggling kicks in this might be fine. In other cases, however this might be a bug. We suggest to add an explicit type cast like in the following example: function acceptsInteger($int) { } $x = '123'; // string "123" // Instead of acceptsInteger($x); // we recommend to use acceptsInteger((integer) $x); Loading history...
246		}
247
248		/**
249		* @param \Spatie\Html\HtmlElement\|string\|iterable\|null $children
250		* @param callable\|null $mapper
251		*
252		* @return static
253		*/
254	View Code Duplication	public function prependChildren($children, $mapper = null)
		0 ignored issues – show Duplication introduced 2017-08-03 11:26 UTC by Report Bug Copy Issue Report This method seems to be duplicated in your project. Duplicated code is one of the most pungent code smells. If you need to duplicate the same code in three or more different places, we strongly encourage you to look into extracting the code into a single class or operation. You can also find more detailed suggestions in the “Code” section of your repository. Loading history...
255		{
256		$children = $this->parseChildren($children, $mapper);
257
258		$element = clone $this;
259
260		$element->children = $children->merge($element->children);
261
262		return $element;
263		}
264
265		/**
266		* Alias for `prependChildren`.
267		*
268		* @param \Spatie\Html\HtmlElement\|string\|iterable\|null $children
269		* @param callable\|null $mapper
270		*
271		* @return static
272		*/
273		public function prependChild($children, $mapper = null)
274		{
275		return $this->prependChildren($children, $mapper);
276		}
277
278		/**
279		* @param string\|null $text
280		*
281		* @return static
282		*/
283		public function text($text)
284		{
285		return $this->html(htmlentities($text, ENT_QUOTES, 'UTF-8', false));
286		}
287
288		/**
289		* @param string\|null $html
290		*
291		* @return static
292		*/
293		public function html($html)
294		{
295		if ($this->isVoidElement()) {
296		throw new InvalidHtml("Can't set inner contents on `{$this->tag}` because it's a void element");
297		}
298
299		return $this->setChildren($html);
		0 ignored issues – show Documentation introduced 2017-12-27 22:10 UTC by Report Bug Copy Issue Report `$html` is of type `string\|null`, but the function expects a `array<integer,object<Spatie\Html\HtmlElement>>`. It seems like the type of the argument is not accepted by the function/method which you are calling. In some cases, in particular if PHP’s automatic type-juggling kicks in this might be fine. In other cases, however this might be a bug. We suggest to add an explicit type cast like in the following example: function acceptsInteger($int) { } $x = '123'; // string "123" // Instead of acceptsInteger($x); // we recommend to use acceptsInteger((integer) $x); Loading history...
300		}
301
302		/**
303		* Condintionally transform the element. Note that since elements are
304		* immutable, you'll need to return a new instance from the callback.
305		*
306		* @param bool $condition
307		* @param callable $callback
308		*/
309		public function if(bool $condition, callable $callback)
		0 ignored issues – show Coding Style introduced 2017-08-03 11:26 UTC by Report Bug Copy Issue Report Possible parse error: non-abstract method defined as abstract Loading history... Coding Style introduced 2017-08-03 11:26 UTC by Report Bug Copy Issue Report It is generally advisable to only define one property per statement. Only declaring a single property per statement allows you to later on add doc comments more easily. It is also recommended by PSR2, so it is a common style that many people expect. Loading history...
310		{
311		if ($condition) {
312		return $callback($this);
313		}
314
315		return $this;
		0 ignored issues – show Coding Style introduced 2017-06-12 19:06 UTC by Report Bug Copy Issue Report The visibility should be declared for property `$this`. The PSR-2 coding standard requires that all properties in a class have their visibility explicitly declared. If you declare a property using class A { var $property; } the property is implicitly global. To learn more about the PSR-2, please see the PHP-FIG site on the PSR-2. Loading history...
316		}
317
318		/**
319		* @return \Illuminate\Contracts\Support\Htmlable
320		*/
321		public function open()
322		{
323		$tag = $this->attributes->isEmpty()
324		? '<'.$this->tag.'>'
325		: "<{$this->tag} {$this->attributes->render()}>";
326
327		$children = $this->children->map(function ($child): string {
328		if ($child instanceof HtmlElement) {
329		return $child->render();
330		}
331
332		if (is_null($child)) {
333		return '';
334		}
335
336		if (is_string($child)) {
337		return $child;
338		}
339
340		throw InvalidChild::childMustBeAnHtmlElementOrAString();
341		})->implode('');
342
343		return new HtmlString($tag.$children);
344		}
345
346		/**
347		* @return \Illuminate\Contracts\Support\Htmlable
348		*/
349		public function close()
350		{
351		return new HtmlString(
352		$this->isVoidElement()
353		? ''
354		: "</{$this->tag}>"
355		);
356		}
357
358		/**
359		* @return \Illuminate\Contracts\Support\Htmlable
360		*/
361		public function render()
362		{
363		return new HtmlString(
364		$this->open().$this->close()
365		);
366		}
367
368		public function isVoidElement(): bool
369		{
370		return in_array($this->tag, [
371		'area', 'base', 'br', 'col', 'embed', 'hr',
372		'img', 'input', 'keygen', 'link', 'menuitem',
373		'meta', 'param', 'source', 'track', 'wbr',
374		]);
375		}
376
377		/**
378		* Dynamically handle calls to the class.
379		* Check for methods finishing by If or fallback to Macroable.
380		*
381		* @param string $method
		0 ignored issues – show Bug introduced 2017-10-11 14:01 UTC by Report Bug Copy Issue Report There is no parameter named `$method`. Was it maybe removed? This check looks for PHPDoc comments describing methods or function parameters that do not exist on the corresponding method or function. Consider the following example. The parameter `$italy` is not defined by the method `finale(...)`. /** * @param array $germany * @param array $island * @param array $italy */ function finale($germany, $island) { return "2:1"; } The most likely cause is that the parameter was removed, but the annotation was not. Loading history...
382		* @param array $parameters
		0 ignored issues – show Bug introduced 2017-03-31 11:00 UTC by Report Bug Copy Issue Report There is no parameter named `$parameters`. Was it maybe removed? This check looks for PHPDoc comments describing methods or function parameters that do not exist on the corresponding method or function. Consider the following example. The parameter `$italy` is not defined by the method `finale(...)`. /** * @param array $germany * @param array $island * @param array $italy */ function finale($germany, $island) { return "2:1"; } The most likely cause is that the parameter was removed, but the annotation was not. Loading history...
383		* @return mixed
384		*
385		* @throws BadMethodCallException
386		*/
387		public function __call($name, $arguments)
388		{
389		if (ends_with($name, 'If')) {
390		$name = str_replace('If', '', $name);
391		if (! method_exists($this, $name)) {
392		throw new BadMethodCallException("$name is not a valid method for this class");
393		}
394
395		$condition = (bool) array_shift($arguments);
396
397		return $condition ?
398		$this->{$name}(...$arguments) :
399		$this;
400		}
401
402		return $this->__macro_call($name, $arguments);
403		}
404
405		public function __clone()
406		{
407		$this->attributes = clone $this->attributes;
408		$this->children = clone $this->children;
409		}
410
411		public function __toString(): string
412		{
413		return $this->render();
414		}
415
416		public function toHtml(): string
417		{
418		return $this->render();
419		}
420
421		protected function parseChildren($children, $mapper = null): Collection
422		{
423		if ($children instanceof HtmlElement) {
424		$children = [$children];
425		}
426
427		$children = Collection::make($children);
428
429		if ($mapper) {
430		$children = $children->map($mapper);
431		}
432
433		$this->guardAgainstInvalidChildren($children);
434
435		return $children;
436		}
437
438		protected function guardAgainstInvalidChildren(Collection $children)
439		{
440		foreach ($children as $child) {
441		if ((! $child instanceof HtmlElement) && (! is_string($child)) && (! is_null($child))) {
442		throw InvalidChild::childMustBeAnHtmlElementOrAString();
443		}
444		}
445		}
446		}
447

spatie / laravel-html

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