What should I use instead of fit and fdescribe in Jasmine 3?

As per your link to fit docs

fit will focus on a test or a set of them.

so if you have 5 tests, 3it and 2fit, only the 2 with fit will run by Jasmine.

ERROR: 'DEPRECATION: fit and fdescribe will cause your suite to report an 'incomplete' status in Jasmine 3.0'

ERROR --> WARNING: Is telling you that only fit'S will run, therefore an incomplete test.

Thanks.

They have fixed the warning. I am using jasmine v3.3.1 and I don't see such a message:

So we can still use fit and fdescribe, please read the below code and its comments. It's tested and easy to understand.

// If you want to run a few describes only, add 'f' so using focus only those
// 'fdescribe' blocks and their 'it' blocks get run
fdescribe("Focus description: I get run with all my it blocks", function () {
  it("1) it in fdescribe gets executed", function () {
    console.log("1) gets executed unless there's a fit within fdescribe");
  });

  it("2) it in fdescribe gets executed", function () {
    console.log("2) gets executed unless there's a fit within fdescribe");
  });

  // But if you add 'fit' in an 'fdescribe' block, only the 'fit' block gets run
  fit("3) only fit blocks in fdescribe get executed", function () {
    console.log("If there's a fit in fdescribe, only fit blocks get executed");
  });
});

describe("Regular description: I get skipped with all my it blocks", function () {
  it("1) it in regular describe gets skipped", function () {
    console.log("1) gets skipped");
  });

  it("2) it in regular describe gets skipped", function () {
    console.log("2) gets skipped");
  });

  // Will a 'fit' in a regular describe block get run? Yes!
  fit("3) fit in regular describe still gets executed", function () {
    console.log("3) fit in regular describe gets executed, too");
  });
});