I have a data structure like this:
data = [
{
parent: {name: 'Sheet'},
firstArray: [{sampleVar: 0.3, typeName: 'active'}, {sampleVar: 0.4, typeName: 'active'}],
secondArray: [{sampleVar: 1.2, typeName: 'passive'}, {sampleVar: 1.3 , typeName: 'passive'}]
},...
]
I want to transform it to a tree data like this:
treeData = [
{
parent: {
name: 'Sheet',
children: [{
typeName: 'active',
children: [
{sampleVar: 0.3},
{sampleVar: 0.4}
]
},
{
typeName: 'passive',
children: [
{sampleVar: 1.2},
{sampleVar: 1.3}
]
},...
]
},...
}
];
I have to mention that my variable typeName has the same value for each array. Does anyone know a good approach to achieve this?
You can use Object.values and map to get the result. I've used an example input that varies a bit more:
const data = [{
parent: {name: 'SheetA'},
justOne: [{sampleVar: 0.3, typeName: 'active'}],
hasTwo: [{indicator: 1.2, typeName: 'passive'}, {indicator: 1.3 , typeName: 'passive'}]
}, {
parent: {name: 'SheetB'},
hasThree: [{otherVar: 9.3, typeName: 'selected'}, {otherVar: 9.4, typeName: 'selected'}, {otherVar: 9.5, typeName: 'selected'}],
secondArray: [{message: 7.2, typeName: 'locked'}, {message: 7.3 , typeName: 'locked'}]
}];
const treeData = data.map(({parent, ...rest}) => ({
...parent,
children: Object.values(rest).map(arr => ({
typeName: arr[0]?.typeName,
children: arr.map(({typeName, ...rest}) => rest)
}))
}));
console.log(treeData);Considering each array has 2 items only each array has its own typename this works.
var result = [
{
parent: {
name: data[0].parent.name,
children: []
}
}
];
for (const property in data[0]) {
if (property == "parent") continue;
let array = data[0][property];
result[0].parent.children.push({
typeName: array[0].typeName,
children: [
{
sampleVar: array[0].sampleVar
},
{
sampleVar: array[1].sampleVar
}
]
});
}
console.log(result);