golang-github-gopherjs-jsbuiltin-dev 0.0~git20180426.5009155-1 (riscv64 binary) in ubuntu oracular

 JavaScript has a small number of built-in functions to handle
 some common day-to-day tasks. This package providers wrappers
 around some of these functions for use in GopherJS.
 .
 It is worth noting that in many cases, using Go's equivalent
 functionality (such as that found in the net/url package) may
 be preferable to using this package, and will be a necessity
 any time you wish to share functionality between front-end
 and back-end code.