Measurement data

measurements.js

const measurementsData = require('./measurements.json');

const newData = measurementsData.table.measurements.reduce((acc, val, idx) => {
	acc.labels.push(val.name);
	
	val.sizes.forEach((d, i) => {
		let row = acc.data.find(r => r[0] === d.name);
			
		if (!row) {
			acc.data.push([d.name]);
			row = acc.data.find(r => r[0] === d.name);
		}
		
		row.push(d.value);
	});
	
	return acc;
}, {
	labels: [measurementsData.table.placeholder],
	data: []
});

console.log(newData);

measurements.json

{
  "header": "Encontre seu tamanho AMARO através das medidas corporais (em centímetros) na tabela abaixo.",
  "footer": "A modelo veste tamanho 38, tem altura de 177 cm, busto de 85 cm, cintura de 62 cm e quadril de 90 cm.",
  "table": {
    "placeholder": "TAMANHO",
    "measurements": [
      {
        "name": "BUSTO",
        "sizes": [
          {
            "name": "PP",
            "value": "79-84"
          },
          {
            "name": "P",
            "value": "84-90"
          },
          {
            "name": "M",
            "value": "90-96"
          },
          {
            "name": "G",
            "value": "96-102"
          },
          {
            "name": "GG",
            "value": "102-108"
          }
        ]
      },
      {
        "name": "CINTURA",
        "sizes": [
          {
            "name": "PP",
            "value": "59-65"
          },
          {
            "name": "P",
            "value": "65-71"
          },
          {
            "name": "M",
            "value": "71-77"
          },
          {
            "name": "G",
            "value": "77-83"
          },
          {
            "name": "GG",
            "value": "83-89"
          }
        ]
      },
      {
        "name": "QUADRIL",
        "sizes": [
          {
            "name": "PP",
            "value": "87-93"
          },
          {
            "name": "P",
            "value": "93-99"
          },
          {
            "name": "M",
            "value": "99-102"
          },
          {
            "name": "G",
            "value": "105-111"
          },
          {
            "name": "GG",
            "value": "111-117"
          }
        ]
      }
    ]
  }
}