String with numbers doesn't well uncompressed

[emandtf]

This array:
['key1' => '12345']
is well compressed but when uncompressed the value of "key1" is an Object (of class: \CompressJson\Core\Value) and not a string again.

[beenotung]

I'm trying to reproduce the error when below test case, but the assertion is not failed.
Do you have another example causing the error?

The test case I'm trying in tests/CompressJsonBaseTest.php:

    public function testStringWithNumbers()
    {
        $data = [
            'key1' => '12345'
        ];
        $compressed = Compressor::create()
            ->compress($data);
        $compressedJson = $compressed
            ->toJson();
        $decompressed = Compressor::create()
            ->decompressJson($compressedJson);
        // Assert
        $this->assertEquals($data, $decompressed);
        $this->assertEquals('12345', $decompressed['key1']);
    }