How to use the domutils.removeSubsets function in domutils

"use strict";

module.exports = CSSselect;

var Pseudos       = require("./lib/pseudos.js"),
    DomUtils      = require("domutils"),
    findOne       = DomUtils.findOne,
    findAll       = DomUtils.findAll,
    getChildren   = DomUtils.getChildren,
    removeSubsets = DomUtils.removeSubsets,
    falseFunc     = require("boolbase").falseFunc,
    compile       = require("./lib/compile.js"),
    compileUnsafe = compile.compileUnsafe,
    compileToken  = compile.compileToken;

function getSelectorFunc(searchFunc){
	return function select(query, elems, options){
        if(typeof query !== "function") query = compileUnsafe(query, options, elems);
        if(!Array.isArray(elems)) elems = getChildren(elems);
		else elems = removeSubsets(elems);
		return searchFunc(query, elems);
	};
}

var selectAll = getSelectorFunc(function selectAll(query, elems){
	return (query === falseFunc || !elems || elems.length === 0) ? [] : findAll(query, elems);

"use strict";

module.exports = CSSselect;

var Pseudos       = require("./lib/pseudos.js"),
    DomUtils      = require("domutils"),
    findOne       = DomUtils.findOne,
    findAll       = DomUtils.findAll,
    getChildren   = DomUtils.getChildren,
    removeSubsets = DomUtils.removeSubsets,
    falseFunc     = require("boolbase").falseFunc,
    compile       = require("./lib/compile.js"),
    compileUnsafe = compile.compileUnsafe;

function getSelectorFunc(searchFunc){
	return function select(query, elems, options){
		if(typeof query !== "function") query = compileUnsafe(query, options);
		if(!Array.isArray(elems)) elems = getChildren(elems);
		else elems = removeSubsets(elems);
		return searchFunc(query, elems);
	};
}

var selectAll = getSelectorFunc(function selectAll(query, elems){
	return (query === falseFunc || !elems || elems.length === 0) ? [] : findAll(query, elems);
});

"use strict";

module.exports = CSSselect;

var Pseudos       = require("./lib/pseudos.js"),
    DomUtils      = require("domutils"),
    findOne       = DomUtils.findOne,
    findAll       = DomUtils.findAll,
    getChildren   = DomUtils.getChildren,
    removeSubsets = DomUtils.removeSubsets,
    falseFunc     = require("./lib/basefunctions.js").falseFunc,
    compile       = require("./lib/compile.js"),
    compileUnsafe = compile.compileUnsafe;

function getSelectorFunc(searchFunc){
	return function select(query, elems, options){
		if(typeof query !== "function") query = compileUnsafe(query, options);
		if(!Array.isArray(elems)) elems = getChildren(elems);
		else elems = removeSubsets(elems);
		return searchFunc(query, elems);
	};
}

var selectAll = getSelectorFunc(function selectAll(query, elems){
	return (query === falseFunc || !elems || elems.length === 0) ? [] : findAll(query, elems);
});