meteor - Error when adding commas to number -


i'm trying helper return number commas (eg 100000 = 100,000). returning correctly getting error appearing in console.

exception in template helper: typeerror: cannot read property 'tostring' of undefined

if console.log(value); returns undefined.

path: test.js

template.registerhelper(     'formatcurrency', function(value) {     return value.tostring().replace(/(\d)(?=(\d\d\d)+(?!\d))/g, "$1,");     }, );

path: test.html

{{formatcurrency comparesalary.usersalary}} {{formatcurrency comparesalary.min}}

a common failure in helpers data isn't subscription time try render it. can prevented testing value before returning it:

template.registerhelper(   'formatcurrency',(value)=>{     return value && value.tostring().replace(/(\d)(?=(\d\d\d)+(?!\d))/g, "$1,");   }, );

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