String trim function ignores rightwards-facing whitespace

[xTrayambak]

Basic Example

var str = new String("     Hello World!       ")
console.log(str.toString())

let x = str.trim()

console.log(x)

Expected Output

Log:      Hello World!      
Log: Hello World!

Current Output

Log:      Hello World!      
Log: Hello World! <right-facing whitespace is still present>

This probably means that I implemented the Trim function incorrectly. Woops.