As I understand it, by convention in handlebars, if a value doesn't exist the helper/value just just return an empty string. However in the case of the subtract helper if the value doesn't exist, it throws an error.
e.g.
Data
{
"value": 10
}
template
{{#if thing}}
{{subtract 20.00 thing}}
{{/if}}
throws an error because thing is undefined. It should return ""
As I understand it, by convention in handlebars, if a value doesn't exist the helper/value just just return an empty string. However in the case of the subtract helper if the value doesn't exist, it throws an error.
e.g.
Data
template
throws an error because
thingis undefined. It should return ""