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Code Issues Releases Wiki Activity

Add error warning if children attr is ever used

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This commit is contained in:
Matthew Kilgore
2020-08-07 19:43:01 -04:00
committed by Franz Liedke
parent e10220ae47
commit 10f4223028
1 changed files with 14 additions and 6 deletions
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20
js/src/common/Component.ts
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@@ -24,9 +24,7 @@ export default abstract class Component<T extends ComponentAttrs = any> implemen
abstract view(vnode: Mithril.Vnode<T, this>): Mithril.Children;
oninit(vnode: Mithril.Vnode<T, this>) {
this.initAttrs(vnode.attrs);
this.attrs = vnode.attrs;
this.setAttrs(vnode.attrs);
}
oncreate(vnode: Mithril.VnodeDOM<T, this>) {
@@ -34,9 +32,7 @@ export default abstract class Component<T extends ComponentAttrs = any> implemen
}
onbeforeupdate(vnode: Mithril.VnodeDOM<T, this>) {
this.initAttrs(vnode.attrs);
this.attrs = vnode.attrs;
this.setAttrs(vnode.attrs);
}
/**
@@ -67,6 +63,18 @@ export default abstract class Component<T extends ComponentAttrs = any> implemen
return m(this as any, componentProps, children);
}
private setAttrs(attrs: T) {
this.initAttrs(attrs);
if (attrs && 'children' in attrs) {
throw new Error(
'The "children" attribute of attrs should never be used. Either pass children in as the vnode children or rename the attribute'
);
}
this.attrs = attrs;
}
protected initAttrs(attrs: T): T {
return attrs;
}