Solution Review: Pascal's Triangle

function printPascal(testVariable) {
  // Base case
  if (testVariable == 0) {
      return [1];
  }
  else {
    var line = [1];
    // Recursive case
    previousLine = printPascal(testVariable - 1);
    for (let i = 0; i < previousLine.length - 1; i++) {
      line.push(previousLine[i] + previousLine[i + 1]);
    }
    line.push(1);
  } 
  return line;
}
// Driver Code
var testVariable = 5;
console.log(printPascal(testVariable));