Predictable Return Conversion

[Taufik Nurrohman]

Global string conversion should be performed only for data in the form of boolean, null, and numbers. JSON data is better to be left as plain text, so the return effect of the conversion is predictable.

Before

$foo = e(['1', 'a', 'true', 'null', '{"foo":1}']); // → `[1, 'a', true, null, ['foo' => 1]]`

// :(
$foo = s([1, 'a', true, null, ['foo' => 1]]); // → `['1', 'a', 'true', 'null', ['foo' => '1']]`

After

$foo = e(['1', 'a', 'true', 'null', '{"foo":1}']); // → `[1, 'a', true, null, '{"foo":1}']`

// :)
$foo = s([1, 'a', true, null, '{"foo":1}']); // → `['1', 'a', 'true', 'null', '{"foo":1}']`

For text data in the form of JSON that comes from a separate page data named *.data can be converted into array/object later.