Backup your code, click Reset, paste it and try again. Maybe you messed up the sample tests, they should look like this:

const Test = require('@codewars/test-compat');

describe("Tests", () => {
  it("test", () => {
Test.assertEquals(alphabetPosition("The sunset sets at twelve o' clock."), "20 8 5 19 21 14 19 5 20 19 5 20 19 1 20 20 23 5 12 22 5 15 3 12 15 3 11");
Test.assertEquals(alphabetPosition("The narwhal bacons at midnight."), "20 8 5 14 1 18 23 8 1 12 2 1 3 15 14 19 1 20 13 9 4 14 9 7 8 20");
  });
});

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