//accepts strings
console.log(
    xxHash("Hello World!")
);

//accepts typed arrays
console.log(
    xxHash(new Uint8Array([1,2,3,4]))
);

//can be seeded
console.log(
    xxHash("Seed me!", 12345)
);

function xxHash(arr, seed){
    //convert string input to typed array
    if(typeof(arr) === "string"){
        var tmp_arr = new Uint32Array(arr.length);
        for(var i = 0; i < arr.length; i++){
            tmp_arr[i] = arr[i].charCodeAt();
        }
        arr = tmp_arr;
    }
    //run xxhash array
    var len = arr.length * arr.BYTES_PER_ELEMENT;
    var buf = Module._malloc(len);
    Module.HEAPU8.set(arr, buf);
    var result = Module.ccall('XXH32', 'number', ['number', 'number', 'number'], [buf, len, seed || 0]);
    Module._free(buf);
    return result;
}