add typeof support

[jottinger]

Some rules may want to include validation of data types. Imagine:

"typeof": [ "a", "string" ] -- evaluates to true if "a" is a string or not.

[jottinger]

The local tests.json file is downloaded from a remote site, so I can't commit the tests directly, but here's what they look like in my local branch, in the "single operator tests":

    [ {"typeof":["a","string"]}, {}, true ],
    [ {"typeof":[1,"number"]}, {}, true],
    [ {"typeof":[1,"string"]}, {}, false],
    [ {"typeof":[[1,2],"object"]}, {}, true],
    [ {"typeof":[1,"object"]}, {}, false],

[jwadhams]

BTW, you can use your existing implementation as a custom operation starting in v1.0.9, like:

jsonLogic.add_operation("typeof", function(variable, type){ return typeof variable === type; });
jsonLogic.apply({"typeof":["a", "string"]});
jsonLogic.apply({"typeof":[1, "number"]});

Documentation is here: http://jsonlogic.com/add_operation.html

[jottinger]

Oh, you know what - I completely forgot about this. The day I got all of this, I had to go to the hospital, ended up having surgery and it completely flew off my radar.

On Fri, Oct 28, 2016 at 5:34 PM, Jeremy Wadhams [email protected] wrote:

BTW, you can use your existing implementation as a custom operation starting in v1.0.9, like:

jsonLogic.add_operation("typeof", function(variable, type){ return typeof variable === type; });jsonLogic.apply({"typeof":["a", "string"]});jsonLogic.apply({"typeof":[1, "number"]});

Documentation is here: http://jsonlogic.com/add_operation.html

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