Adding error message to date repeat (#149)

Liniting fixes

__tests__/functions.test.ts

@@ -28,12 +28,12 @@ describe("concat", () => {
   });
   it("cant concat empty list", () => {
     const fn = () => pl.concat([]);
-    expect(fn).toThrowError();
+    expect(fn).toThrow();
   });
 
   it("can only concat series and df", () => {
     const fn = () => pl.concat([[1] as any, [2] as any]);
-    expect(fn).toThrowError();
+    expect(fn).toThrow();
   });
   test("horizontal concat", () => {
     const a = pl.DataFrame({ a: ["a", "b"], b: [1, 2] });
@@ -75,6 +75,10 @@ describe("repeat", () => {
 
     expect(actual).toSeriesEqual(expected);
   });
+  it("fail to repeat a date value", () => {
+    const fn = () => pl.repeat(new Date(), 4, "foo");
+    expect(fn).toThrow();
+  });
 });
 describe("horizontal", () => {
   it("compute the bitwise AND horizontally across columns.", () => {

__tests__/series.test.ts

@@ -546,10 +546,10 @@ describe("series", () => {
     }
   });
   it("describe", () => {
-    expect(() => pl.Series([]).describe()).toThrowError(
+    expect(() => pl.Series([]).describe()).toThrow(
       "Series must contain at least one value",
     );
-    expect(() => pl.Series("dt", [null], pl.Date).describe()).toThrowError(
+    expect(() => pl.Series("dt", [null], pl.Date).describe()).toThrow(
       "Invalid operation: describe is not supported for DataType(Date)",
     );
     let actual = pl.Series([true, false, true]).describe();

src/series.rs

@@ -244,7 +244,7 @@ impl JsSeries {
                     ));
                 }
             }
-            _ => todo!(),
+            dt => { return Err(napi::Error::from_reason(format!("data type: {:?} is not supported as range", dt))); }
         };
         Ok(s)
     }