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function checkType(item, test) { | |
const parsedTest = Array.isArray(test) ? test[0] : test; | |
return item.constructor === parsedTest; | |
} | |
function checkArrayType(value, test) { | |
const result = []; | |
value.forEach((item, i) => { | |
if (typeof item === 'object') { | |
result.push(checkObjectType(item, test[i])); | |
} else if (checkType(item, test)) { | |
result.push(item); | |
} | |
}); | |
return result; | |
} | |
function checkObjectType(value, test) { | |
const keys = Object.keys(value); | |
const result = {}; | |
keys.forEach((key) => { | |
const newValue = value[key]; | |
debugger; | |
if (Array.isArray(newValue) && test) { | |
result[key] = checkArrayType(newValue, test[key]); | |
} else if (typeof newValue === 'object' && test) { | |
result[key] = checkObjectType(newValue, test[key]); | |
} else if (test && test[key] && checkType(newValue, test[key])) { | |
result[key] = newValue; | |
} | |
}); | |
return result; | |
} | |
function nestedTypeFilter(value, test) { | |
if (value === null) { | |
return undefined; | |
} | |
if (Array.isArray(test) || Array.isArray(value)) { | |
return checkArrayType(value, test); | |
} | |
if (typeof value === 'object') { | |
return checkObjectType(value, test); | |
} | |
if (checkType(value, test)) { | |
return value; | |
} | |
return undefined; | |
} | |
module.exports = nestedTypeFilter; |
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