const reserved = item => {
let res = { label: item.action_name, value: item.action_id, checked: false };
if (item.son && item.son.length > 0) {
res.son = item.son.map(s => reserved(s));
}
return res;
};
const result = this.moduleData.showModule.reduce((res, item) => {
res.push(reserved(item));
return res;
}, []); 
what should I do
this tells you how to change it. This is a type detection error belonging to typescript.
Type supplement
adding a type any to each value is the most rude way
here you need Interfaces object type interface to define the search keyword
ts syntax does not allow you to add new attributes to the object casually, you need to define it in interface.
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