hljs extern compiler warnings

[Carlos Rovira <ca...@apache.org>]

Hi,

I continue to hit against walls with externs...what's making me not
progress with the blog example about this (that I think will be very
important for Royale when published for the people coming), since this part
seems that needs a little more love to polish some things.

when building TDJ with the actual hljs.as declaration

package
{
    /**
     * @externs
     */
    public class hljs
    {
        public static function highlightBlock(block:Element):void {}
    }
}

I get this warnings:

may 09, 2019 11:21:59 PM com.google.javascript.jscomp.LoggerErrorManager
println
ADVERTENCIA:
/Users/carlosrovira/Dev/Royale/Source/royale-asjs/examples/royale/TourDeJewel/target/javascript/bin/js-debug/hljs.js:15:
WARNING - accessing name hljs in externs has no effect. Perhaps you forgot
to add a var keyword?
hljs = function() {
^^^^

may 09, 2019 11:21:59 PM com.google.javascript.jscomp.LoggerErrorManager
println
ADVERTENCIA:
/Users/carlosrovira/Dev/Royale/Source/royale-asjs/examples/royale/TourDeJewel/target/javascript/bin/js-debug/hljs.js:15:
WARNING - variable hljs is undeclared
hljs = function() {
^^^^

may 09, 2019 11:21:59 PM com.google.javascript.jscomp.LoggerErrorManager
println
ADVERTENCIA:
/Users/carlosrovira/Dev/Royale/Source/royale-asjs/examples/royale/TourDeJewel/target/javascript/bin/js-debug/hljs.js:23:
Originally at:
/Users/carlosrovira/Dev/Royale/Source/royale-asjs/examples/royale/TourDeJewel/src/main/royale/
hljs.as:26: WARNING - name hljs is not defined in the externs.
                public static function highlightBlock(block:Element):void {}
                                       ^^^^

may 09, 2019 11:21:59 PM com.google.javascript.jscomp.LoggerErrorManager
printSummary
ADVERTENCIA: 0 error(s), 3 warning(s), 97.7% typed
The project 'App' has been successfully compiled and optimized.

Maybe there's particularities that needs to be added that I didn't know?

thanks

-- 
Carlos Rovira
http://about.me/carlosrovira