Add Uint8ClampedArray to TypedArray_to_dtype mapping

[zengspr]

When calling create_dataset with data that is a Uint8ClampedArray, the library throws the error "DataView not supported directly for write".

This appears to be because the TypedArray_to_dtype is missing a mapping for that array type, even though it is a permissible array type based on the GuessableDataTypes and TypedArray types.

This PR updates the mapping so Uint8ClampedArrays can be provided as the data parameter to create_dataset.

[bmaranville]

Thanks for the PR! This one looks pretty straightforward.

[Carnageous]

Just looking at the TypedArray_to_dtype map, Float16Array also seems to be missing here. Not sure if that is even supported though (It's not defined in TypedArray or TypedArrayConstructor)

[bmaranville]

Just looking at the TypedArray_to_dtype map, Float16Array also seems to be missing here. Not sure if that is even supported though (It's not defined in TypedArray or TypedArrayConstructor)

Do people want support for Float16 in h5wasm for reading and/or writting? We could enable type conversion on read/write from a native type like Float32Array, or add an inefficient (compared to builtin TypedArrays) class for holding Float16 values in Javascript. Maybe a new issue if this is important?

[Carnageous]

I personally don't need it and I'm unsure if there are any use-cases. I just mentioned it because it is a built-in type in many browser engines. But you are right that it probably doesn't make a whole lot of sense in the context of hdf5 files.

[bmaranville]

Wow - the support for Float16Array is weirdly distributed among browsers and server runtimes:
https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Float16Array#browser_compatibility

[axelboc]

Yeah, Float16Array is out now. It'd definitely be worth accepting/returning Float16Array on browsers that support it if possible.