protocol_worker.js

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/* eslint-disable mozilla/no-comparison-or-assignment-inside-ok */

function ok(a, msg) {

  postMessage({ type: "status", status: !!a, msg });

function is(a, b, msg) {

  ok(a === b, msg);

function finish() {

  postMessage({ type: "finish" });

let url = new URL("http://example.com");

is(url.protocol, "http:", "http: expected");

url.protocol = "https:";

is(url.protocol, "https:", "http: -> https:");

url.protocol = "ftp:";

is(url.protocol, "ftp:", "https: -> ftp:");

url.protocol = "https:";

is(url.protocol, "https:", "ftp: -> https:");

finish();