Checking `expect.toBeCloseTo` uses absolute difference, there should be a `expect.toBeRelativelyCloseTo` for checking ratios are close to 1

[AncientSwordRage]

Clear and concise description of the problem

I would expect expect(1.0000011e100).toBeCloseTo(1.0000012e100, 3) to pass, but the check is for absolute difference, not relative (not a bug, as this seems intentional):

Math.abs(expected - received) < 0.005 (that is, 10 ** -2 / 2)

But for large numbers in scientific notation, having a relative difference would be handy, so I don't need to do either:

const actual = 1.0000011e100;
const expected = 1.0000012e100;
expect(actual/1e100).toBeCloseTo(expected/1e100, 3);

or

const actual = 1.0000011e100;
const expected = 1.0000012e100;
expect(actual/expected).toBeCloseTo(1, 3);

Suggested solution

Implement a new method that uses similar method to the above workarounds.

Alternative

No response

Additional context

No response

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[hi-ogawa]

Implement a new method that uses similar method to the above workarounds.

You can customize assertion via expect.extend. https://vitest.dev/api/expect.html#expect-extend Please prototype your desired API and feel free to share.