The `default` export is treated differently across tooling when transpiled
to CommonJS - tools differ on whether `module.exports` represents the full
module object or just its default export. Switch `src/` modules to named
exports for tooling consistency.
Fixes gh-5262
Closes gh-5292
Neither of the removed links is crucial; one of them refers to a site that has
since started being malicious; while the Web Archive links remain safe, some
scanners warn about such links. Removing them is the safest thing to do.
Fixes gh-4981
Closes gh-4991
Migrate all source AMD modules to ECMAScript modules. The final bundle
is compiled by a custom build process that uses Rollup under the hood.
Test files themselves are still loaded via RequireJS as that has to work in
IE 11.
Tests can now be run in "Load as modules" mode which replaces the previous
"Load with AMD" option. That option of running tests doesn't work in IE
and Edge as it requires support for dynamic imports.
Some of the changes required by the migration:
* check `typeof` of `noGlobal` instead of using the variable directly
as it's not available when modules are used
* change the nonce module to be an object as ECMASscript module exports
are immutable
* remove some unused exports
* import `./core/parseHTML.js` directly in `jquery.js` so that it's not
being cut out when the `ajax` module is excluded in a custom compilation
Closes gh-4541
Using modules for window.setTimeout etc. made those functions cached and
disabled Sinon mocking, making effects tests fail. Just writing
window.setTimeout directly is smaller anyway.
