Sorts parameters by name.
let params = new URLSearchParams("z=1&a=2&m=3")
params.sort()
params.toString()
"a=2&m=3&z=1"
let params = new URLSearchParams("foo=1&bar=2&baz=3")
params.sort()
params.toString()
"bar=2&baz=3&foo=1"
let params = new URLSearchParams("b=1&a=2&a=3")
params.sort()
params.toString()
"a=2&a=3&b=1"