How to use 'd3 filter' in JavaScript

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93function _filter(dataset, ...filters) {
94 return dataset.filter(d=>{
95 return filters.every(f=>{
96 return f(d)
97 })
98 })
99}
26function d3CTDDataSourceFilter(dataSource, filter) {
27 var self = this;
28 // call base class contructor
29 baseClass.call(self);
30
31 self._filter = filter;
32
33 // register handler
34 dataSource.addEventListener('eventObject', function (evt) {
35 var eventObject = evt.owner;
36 // check filter
37 if (self._filter) {
38 for (var id in self._filter) {
39 if (!eventObject.hasOwnProperty(id) || eventObject[id] != self._filter[id])
40 return;
41 }
42 }
43
44 // forward message
45 self.raiseEvent('eventObject', eventObject);
46
47 });
48
49 return self;
50}

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