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@mischnic
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const msgpack = require('@msgpack/msgpack'); let original = {x: undefined}; let serialized = msgpack.encode(original, {extensionCodec}); let deserialized = msgpack.decode(serialized, {extensionCodec}); console.log(original, deserialized, original.x === deserialized.x);
prints "{ x: undefined } { x: null } false". This is a problem because now code checking for strict equality fails.
I was also not able to handle this in an extension codec because that is only called for non-primitive values.
ignoreUndefined: true doesn't work in all cases:
let original = undefined;
let serialized = msgpack.encode(original, {ignoreUndefined: true});
let deserialized = msgpack.decode(serialized, {ignoreUndefined: true});
console.log(original, deserialized, original === deserialized); // undefined null false
This is stated in the readme, but is there no way to retain this with an extension codec?
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