Convert specific property form Record into Array in Typescript/Javascript-CodePudding

Need to convert Record Type in Typescript/Javascript to Array with specific property

const store: Record<ProductID, ProductObject> = {
        'france': productObject:{
                                 present: 'in_stock',
                                 amount: 23,                            
                                },
            'uk': productObject:{
                                 present: 'in_stock',
                                 amount: 20,                            
                                },
         'japan': productObject:{
                                 present: 'no_stock',
                                 amount: 0,                         
                                },                      
    }

Output: Creating New Array. Adding new key as 'country' & take only 'amount' property from store Record type.

const newArrayFromRecord = [
                            {country: 'france', amount: 23},
                            {country: 'uk', amount: 20}
                            {country: 'japan', amount: 0}
                           ]

I have tried with Object.entries() and then pushing in Array. But all require unnecessary code. Is there any efficient way to do..

CodePudding user response：

This is one possible way to achieve the objective:

  Object.entries(store).map(([k, v]) => ({
    country: k,
    amount: v.amount
  }))

Code Snippet using JS:

const store = {
  'france': {
    present: 'in_stock',
    amount: 23,
  },
  'uk': {
    present: 'in_stock',
    amount: 20,
  },
  'japan': {
    present: 'no_stock',
    amount: 0,
  },
};

console.log(
  'result: ',
  Object.entries(store).map(([k, v]) => ({
    country: k,
    amount: v.amount
  }))
);

And, here's a TypeScript Playground link.

CodePudding user response：

You could just loop over the store object using a for in loop.

Or mapping it with Object.keys.

Aside from that I don't think there is really a more "efficient" solution.

const store = {
    france: {
        present: "in_stock",
        amount: 23,
    },
    uk: {
        present: "in_stock",
        amount: 20,
    },
    japan: {
        present: "no_stock",
        amount: 0,
    },
};

const result = [];
for (const country in store) {
    result.push({ country, amount: store[country].amount });
}

const result_2 = Object.keys(store).map((country) => ({
    country,
    amount: store[country].amount,
}));

console.log(result);
console.log(result_2);