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¿Cómo puedo encontrar objetos con los mismos valores de clave en una matriz?

Tengo una matriz de objetos que se ve así:

 const arr = [ { type: 'type', fields: ['field1'] }, { type: 'type2' }, { type: 'type', fields: ['field2'] }, ]

Y necesito encontrar objetos con el mismo tipo para fusionar la clave de campos en ellos, así:

 const arr = [ { type: 'type', fields: ['field1', 'field2'] }, { type: 'type2' }, { type: 'type', fields: ['field1', 'field2'] }, ]

Mi plan era filtrar a través de la matriz, pero mi problema es que no sé qué tipo me enviará la API, por lo que filtrar por item.type no me funcionaría.

about 4 years ago · Juan Pablo Isaza
2 answers
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0

Si esa es la solución exacta que desea. El siguiente fragmento de código puede ayudarlo.

 const arr = [ { type: 'type', fields: ['field1']}, { type: 'type2'}, { type: 'type', fields: ['field2']} ] const modifyArr = (data) => { let res = []; arr.map((item) => { if(item.type == data.type){ if(Object.keys(item).includes('fields')){ res = res.concat(item.fields); } } }); return Object.keys(data).includes('fields') ? { type: data.type, fields: res } : { type: data.type }; } let newArr = arr.map(item => modifyArr(item)); console.log(newArr);

Esto se imprimirá

 [ { type: 'type', fields: ['field1', 'field2'] }, { type: 'type2' }, { type: 'type', fields: ['field1', 'field2'] }, ]
about 4 years ago · Juan Pablo Isaza Report

0

 const arr = [{ type: 'type', fields: ['field1']}, { type: 'type2'}, { type: 'type', fields: ['field2']}]; result = arr.map(({ type }) => { const fields = arr.filter((o) => o.type === type).flatMap((e) => e.fields); return { type, ...fields[0] ? { fields } : {} }; }); console.log(result); //[ // {"type": "type", "fields": ["field1", "field2"]}, // {"type": "type2"}, // {"type": "type", "fields": ["field1", "field2"]} //]

about 4 years ago · Juan Pablo Isaza Report
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