Hi userscript coders
I'm not familiar with javascripts new asynchronous features, so I'm trying
to wrap GM4's new asynchronous API into some simple to use synchronous
methods to quickly update my userscripts for cross-API compatibility. I
studied some posts on subject, and thought I understood what to do. But it
doesn't work...
In the following I simply write a value with setValue and reads it again
with getValue. With GM3 it will alert *"value=42"*, as expected. But with
GM4 it alerts *"value=[object Promise]"*.
What am I doing wrong? How do I get rid of that Promise?
var *gm4test *= {
INFO: true,
DEBUG: false,
*log*: function(s, info) {
if ((info && window.console) || (gm4test.DEBUG && window.console)) {
window.console.log('*GM4test* '+s);
}
},
*getValue*: function(name, defval) {
var rt;
if (typeof GM_getValue === 'function') { // GM3 etc
rt = GM_getValue(name, defval);
} else if (typeof GM === 'object' && typeof GM.setValue === 'function') { //
GM4
rt = (*async *function(){return *await *GM.getValue(name, defval);})();
} else {
alert('Sorry, no support for GM getValue API method');
gm4test.log('Sorry, no support for GM getValue API method', gm4test.INFO);
}
return rt;
},
*setValue*: function(name, value) {
if (typeof GM_setValue === 'function') { // GM3 etc
GM_setValue(name, value);
} else if (typeof GM === 'object' && typeof GM.setValue === 'function') { //
GM4
(*async *function(){*await *GM.setValue(name, value);})();
} else {
alert('Sorry, no support for GM setValue API method');
gm4test.log('Sorry, no support for GM setValue API method', gm4test.INFO);
}
},
*run*: function () {
gm4test.log('Running...');
// Set...
gm4test.*setValue*('gm4val', 42);
// and get again...
var rv = gm4test.*getValue*('gm4val', '');
*alert('value='+rv); // Expected "value=42", but with GM4 I get
"value=[object Promise]" !*
}
};
*gm4test.run();*
https://gist.github.com/StigNygaard/ea03b7ad2faeabe732c308786e3046c9
I know it would be more ambitious to try to take advantage of the new
asynchronous possibilities, but that will have to be a project for later.
Right now I'm just looking for a quick and easy fix for my scripts...
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