message: Minor: Added support to also use "-" operator to negate numbers(used by POI styling
diff: @@ -279,6 +279,15 @@ describe("ExprEvaluator", function() {
  });
  });
  + describe("Operator '-'", function() {
  + it("evaluate", function() {
  + assert.strictEqual(evaluate(["-", 123, 321]), 123 - 321);
  + assert.strictEqual(evaluate(["-", 123]), -123);
  + assert.throws(() => evaluate(["-", "a"]));
  + assert.throws(() => evaluate(["-", "a", 321]));
  + });
  + });
  +
  describe("Operator '*'", function() {
  it("evaluate", function() {
  assert.strictEqual(evaluate(["*", 1, 2, 3, 4]), 1 * 2 * 3 * 4);
  