javascript - Whitelist nested properties using this particular object format -


need "whitelist" object this:

{     a: {         b: {             c: ''         }     } }

apply to:

{     a: {         b: {             c: 1         }         d: 2         e: 3     } }

result: 

{     a: {         b: {             c: 1         }     } }

any suggestions? not sure how implement using underscore. looking @ _.pick ran trouble nesting.

recursion array.prototype.reduce():

function getpaths(obj, whitelist) {      return object.keys(whitelist)      .reduce(function(whiteobj, key) {        if (!obj.hasownproperty(key)) {        } else if(typeof obj[key] === 'object') {          whiteobj[key] = getpaths(obj[key], whitelist[key]);        } else {          whiteobj[key] = obj[key];        }              return whiteobj;      }, {})  }    var whitelist = {    a: {      b: {        c: ''      }    },    g: ''  };    var obj = {    a: {      b: {        c: 1      },      d: 2,      e: 3    }  };    var result = getpaths(obj, whitelist);    console.log(result);


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