Function boa::builtins::array::join

pub fn join(this: &Value, args: &[Value], _: &mut Interpreter) -> ResultValue

Array.prototype.join ( separator )

The elements of the array are converted to Strings, and these Strings are then concatenated, separated by occurrences of the separator. If no separator is provided, a single comma is used as the separator. https://tc39.es/ecma262/#sec-array.prototype.join