node.js - How can I determine which encoding JSON.stringify() used? -

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i'm putting node/express app returning json serialized using json.stringify(). i'd set content-type http header include encoding info--such application/json; charset=utf-16.

my understanding json.stringify() might produce utf-16 or ucs-2 encoded results. how know encoding used serialize json, , what's best way inform user-agents of correct encoding?

as far understand, returns instance of type string, defined sequence of 0 or more 16-bit unsigned integers (see spec).

i cite link above:

a string value member of string type. each integer value in sequence represents single 16-bit unit of utf-16 text. however, ecmascript not place restrictions or requirements on values except must 16-bit unsigned integers.

because of that, guess it's implementation defined. this maybe part of spec of interest you.


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