Your requirements could not be resolved to an installable set of packages. Problem 1 - vimeo/psalm[5.21.1, ..., 5.26.1] require php ^7.4 || ~8.0.0 || ~8.1.0 || ~8.2.0 || ~8.3.0 -> your php version (8.4.0alpha2) does not satisfy that requirement. - Root composer.json requires vimeo/psalm ^5.21.1 -> satisfiable by vimeo/psalm[5.21.1, ..., 5.26.1].

Your requirements could not be resolved to an installable set of packages. Problem 1 - vimeo/psalm[5.21.1, ..., 5.26.1] require php ^7.4 || ~8.0.0 || ~8.1.0 || ~8.2.0 || ~8.3.0 -> your php version (8.4.0alpha2) does not satisfy that requirement. - Root composer.json requires vimeo/psalm ^5.21.1 -> satisfiable by vimeo/psalm[5.21.1, ..., 5.26.1].

Escaped Mutant for Mutator "Throw_": --- Original +++ New @@ @@ { if ($encoding !== null) { if ($encoding === '') { - throw new Exception\InvalidArgumentException(static::class . ' constructor parameter does not allow a blank value'); + new Exception\InvalidArgumentException(static::class . ' constructor parameter does not allow a blank value'); } $encoding = strtolower($encoding); if (!in_array($encoding, $this->supportedEncodings)) {

Escaped Mutant for Mutator "Concat": --- Original +++ New @@ @@ { if ($encoding !== null) { if ($encoding === '') { - throw new Exception\InvalidArgumentException(static::class . ' constructor parameter does not allow a blank value'); + throw new Exception\InvalidArgumentException(' constructor parameter does not allow a blank value' . static::class); } $encoding = strtolower($encoding); if (!in_array($encoding, $this->supportedEncodings)) {

Escaped Mutant for Mutator "ConcatOperandRemoval": --- Original +++ New @@ @@ { if ($encoding !== null) { if ($encoding === '') { - throw new Exception\InvalidArgumentException(static::class . ' constructor parameter does not allow a blank value'); + throw new Exception\InvalidArgumentException(' constructor parameter does not allow a blank value'); } $encoding = strtolower($encoding); if (!in_array($encoding, $this->supportedEncodings)) {

Escaped Mutant for Mutator "ConcatOperandRemoval": --- Original +++ New @@ @@ { if ($encoding !== null) { if ($encoding === '') { - throw new Exception\InvalidArgumentException(static::class . ' constructor parameter does not allow a blank value'); + throw new Exception\InvalidArgumentException(static::class); } $encoding = strtolower($encoding); if (!in_array($encoding, $this->supportedEncodings)) {

Escaped Mutant for Mutator "Concat": --- Original +++ New @@ @@ } $encoding = strtolower($encoding); if (!in_array($encoding, $this->supportedEncodings)) { - throw new Exception\InvalidArgumentException('Value of \'' . $encoding . '\' passed to ' . static::class . ' constructor parameter is invalid. Provide an encoding supported by htmlspecialchars()'); + throw new Exception\InvalidArgumentException($encoding . 'Value of \'' . '\' passed to ' . static::class . ' constructor parameter is invalid. Provide an encoding supported by htmlspecialchars()'); } $this->encoding = $encoding; }

Escaped Mutant for Mutator "ConcatOperandRemoval": --- Original +++ New @@ @@ } $encoding = strtolower($encoding); if (!in_array($encoding, $this->supportedEncodings)) { - throw new Exception\InvalidArgumentException('Value of \'' . $encoding . '\' passed to ' . static::class . ' constructor parameter is invalid. Provide an encoding supported by htmlspecialchars()'); + throw new Exception\InvalidArgumentException($encoding . '\' passed to ' . static::class . ' constructor parameter is invalid. Provide an encoding supported by htmlspecialchars()'); } $this->encoding = $encoding; }

Escaped Mutant for Mutator "ConcatOperandRemoval": --- Original +++ New @@ @@ } $encoding = strtolower($encoding); if (!in_array($encoding, $this->supportedEncodings)) { - throw new Exception\InvalidArgumentException('Value of \'' . $encoding . '\' passed to ' . static::class . ' constructor parameter is invalid. Provide an encoding supported by htmlspecialchars()'); + throw new Exception\InvalidArgumentException('Value of \'' . '\' passed to ' . static::class . ' constructor parameter is invalid. Provide an encoding supported by htmlspecialchars()'); } $this->encoding = $encoding; }

Escaped Mutant for Mutator "Concat": --- Original +++ New @@ @@ } $encoding = strtolower($encoding); if (!in_array($encoding, $this->supportedEncodings)) { - throw new Exception\InvalidArgumentException('Value of \'' . $encoding . '\' passed to ' . static::class . ' constructor parameter is invalid. Provide an encoding supported by htmlspecialchars()'); + throw new Exception\InvalidArgumentException('Value of \'' . '\' passed to ' . $encoding . static::class . ' constructor parameter is invalid. Provide an encoding supported by htmlspecialchars()'); } $this->encoding = $encoding; }

Escaped Mutant for Mutator "ConcatOperandRemoval": --- Original +++ New @@ @@ } $encoding = strtolower($encoding); if (!in_array($encoding, $this->supportedEncodings)) { - throw new Exception\InvalidArgumentException('Value of \'' . $encoding . '\' passed to ' . static::class . ' constructor parameter is invalid. Provide an encoding supported by htmlspecialchars()'); + throw new Exception\InvalidArgumentException('Value of \'' . $encoding . static::class . ' constructor parameter is invalid. Provide an encoding supported by htmlspecialchars()'); } $this->encoding = $encoding; }