Object visitor is an utility function to traverse an object or a list that have a tree shape
We are going to test the visitor function with the object bellow
const tree = [
{
label: 'first',
open: false,
children: [
{ label: 'children-first-first-element', open: false },
{ label: 'children-first-second-element', open: false },
{ label: 'children-first-third-element', open: false }
]
},
{
label: 'second',
open: false
},
{
label: 'first',
open: false,
children: [
{ label: 'children-third-first-element', open: false },
{ label: 'children-third-second-element', open: false },
{ label: 'children-third-third-element', open: false }
]
}
]To use the visitor on the previous example to change all open keys to true, we can do :
visitor(treeList, curr => {
curr.open = true
})
// or
visitor(
treeList,
curr => {
curr.open = true
},
curr => curr.children
)This project is created using typescript-library-starter
