Invalid field access : index

[zabojad]

I cannot use the lodash build macro in one of my page component file. Here is the macro debug output:

/usr/local/lib/haxe/std/neko/_std/Type.hx:220: characters 17-24 : Invalid field access : index
/usr/local/lib/haxe/std/haxe/macro/Printer.hx:114: characters 39-41 : Called from
/usr/local/lib/haxe/std/neko/_std/Array.hx:275: characters 12-18 : Called from
/usr/local/lib/haxe/std/haxe/macro/Printer.hx:118: characters 20-38 : Called from
<builtin>:1: character 0 : Called from
/usr/local/lib/haxe/std/haxe/macro/Printer.hx:318: characters 82-86 : Called from
/usr/local/lib/haxe/std/haxe/macro/Printer.hx:144: characters 44-75 : Called from
/Users/thomasfetiveau/wksp_myproj/myproj-apps-rn59/.haxelib/haxe-lodash/git/./lib/lodash/Lodash.hx:177: characters 11-44 : Called from
src/myproj/view/page/MenuPage.hx:314: characters 1-7 : Called from
Aborted

And here is the code of the page:

typedef MenuPageViewState = {
	data:Array<Int>,
}
typedef MenuPageViewProps = {
	> react.native.navigation.NavProps,
	intl:IntlShape,
}
@:build(lib.lodash.Lodash.build())
class MenuPageView extends ReactComponentOf<MenuPageViewProps,MenuPageViewState> {
	static var styles = MenuPageStyles.value;
	function new(p){
		super(p);
		this.state = {data:[for(i in -10...10) i]};
	}

	private var _list:FlatList<Int>;
	function onListRef(r:FlatList<Int>){
		if(r==null) return;
		_list=r;
	}

	function keyExtractor(item:Int,_):String{
		return Std.string(item);
	}

	function scrollToOffset(v:Float){
		trace('scrollToOffset',v);
		if(_list==null) return;
		_list.scrollToOffset({animated:true,offset:v});
	}

	@:throttle(1000, {leading:true,trailing:false})
	function onEndReached(_){
		trace('onEndReached');
		setState({data:state.data.concat([for(i in state.data.length-10...state.data.length) i])});
	}
	
	function renderItem(v:{item:Int}){
		return null;
	}
	
	override function render() {
		return jsx('
			<>
				<View style=${styles.page}>
					<View style=${styles.titleView}>
						<Text style=${styles.title}>
							<FormattedMessage id="account_page_menus" mode=${Uppercase} />
						</Text>
					</View>
					<FlatList 
						ref=${onListRef}
						keyExtractor=${keyExtractor}
						style=${styles.scroller} 
						contentContainerStyle=${styles.scrollerContent}
						renderItem=${renderItem}
						onEndReached=${onEndReached}
						data=${state.data}
					/>
				</View>
			</>
		');
	}
}

Any idea?

[zabojad]

@kiroukou it seems the issue happens because of the _ argument placeholder:

@:throttle(1000, {leading:true,trailing:false})
function onEndReached(_){
	// ...
}

Is there any way to support it?

[kiroukou]

This one is a little bit complicated.
The current behaviour makes the parameters received by the throttled method sent to the "original" methods. Most of the time, we want the parameters to be passed.
Could we consider that an "unspecified" parameter, named after "_", could be ommited ?

I did an attempt to fix that scenario in the commit 5eb390b

Can you have a look in your test case ? (I did something very bad, a blind commit without testing... since I don't have the environment setup at the moment)