How to show the currency format in lwc tree grid - salesforce

Question

Hi i Created one lwc tree grid it is working fine showing the tree grid but one issue Iam not able to shown the number fields in the currency format it is showing $Nan.I have three columns in my lwc Treegrid
Column1 : Data Product Name,
Column2 : Current Value,
Column3 : Potential Value,
I want to show the current value and Potential Value in currency format
import { LightningElement,track,wire,api } from 'lwc';
import getDataProductRecordId from
'#salesforce/apex/FetchDataProductRecordId.getDataProductRecordId';
import SystemModstamp from '#salesforce/schema/Account.SystemModstamp';
export default class Data_products_tree_view extends LightningElement {
dataDomainsval;
error;
#track expandedRows = [];
#track gridData = [];
#track gridColumns = [{type:'url',
fieldName:'linkName',
label:'Data Product Name',
typeAttributes: {label: { fieldName: 'Name' }, target: '_blank'}
},{
type:'Number',
fieldName:'Data_Product_Valuation_Current__c',
label:'Current Value'
},
{
type:'Text',
fieldName:'Data_Product_Valuation_Potential__c',
label:'Potential Value'
}];
//#track gridData;
#track gridData2;
#api recordId;
connectedCallback(){
var formatter = new Intl.NumberFormat('en-US', {
style: 'currency',
currency: 'USD',
maximumFractionDigits: 0,
minimumFractionDigits: 0,
});
getDataProductRecordId({recId : this.recordId}).then(result =>{
var tempDomains = [];
for(var i=0;i<result.length;i++){
if(result[i].Parent__c == undefined){
tempDomains.push(JSON.parse(JSON.stringify(result[i])));
var arr = [];
for(let k=0;k<tempDomains.length;k++){
tempDomains[k]['linkName'] = '/' + tempDomains[k].Id;
tempDomains[k].Data_Product_Valuation_Current__c = formatter.format(tempDomains[k].Data_Product_Valuation_Current__c);
if(tempDomains[k].Data_Valuation_Components__r != undefined){
tempDomains[k]._children = tempDomains[k].Data_Valuation_Components__r;
for(let l=0;l<tempDomains[k]._children.length;l++){
console.log('childs update'+tempDomains[k]._children[l]);
tempDomains[k]._children[l]['linkName'] = '/' + tempDomains[k]._children[l].Id;
}
delete tempDomains[k].Data_Valuation_Components__r;
}
console.log('print my josn'+JSON.stringify(tempDomains[k].Data_Valuation_Components__r));
}
}
console.log('jsonvalue'+JSON.stringify(tempDomains));
}
this.gridData= tempDomains;
})
}}