The gap between the verses
Whether an interval of ruin and judgment separates Genesis 1:1 from the six days, or the two verses describe one continuous beginning.
Genesis 1:1-2
1In the beginning, God created the heavens and the earth.
2The earth was formless and empty. Darkness was on the surface of the deep and God’s Spirit was hovering over the surface of the waters.
What each tradition says
Rabbinic / Midrashic
No sourced position found. Checked jewishencyclopedia.com articles 'Creation' (4730), 'Cosmogony' (4684), 'Genesis, the Book of' (6580), 'Adam' (758): all read Gen 1:1-2 as one continuous account ('empty chaos' at the start, ordering in the six days); no interval-of-ruin position found.
Patristic
No sourced position found. Checked ANF/CCEL and archive.org (Theophilus, Book II ch. x; Basil's Hexaemeron Hom. I-II; ANCL vol. 20): the fathers read Gen 1:1-2 continuously; no statement of an interval of ruin between the verses found.
Catholic
No sourced position found. Checked Summa Theologiae I q.46 and the Catholic Encyclopedia article 'Creation' (newadvent.org/cathen/04470a.htm): no discussion of an interval between Gen 1:1 and Gen 1:2; Gen 1 is unfolded as one continuous six-day work.
Orthodox
No sourced position found. Checked Basil's Hexaemeron Hom. I-II (archive.org scan) and searched CCEL/archive.org for Eastern-father statements on an interval between Gen 1:1 and Gen 1:2; the Eastern tradition reads the verses continuously. No citable PD statement of a ruin-and-restoration interval found.
Reformed / Protestant
Calvin takes Moses simply to assert that the world was not perfected at its very commencement as it is now seen, but was created an empty chaos of heaven and earth. When God in the beginning created the heaven and the earth, the earth was empty and waste.
John Calvin, Commentaries on the First Book of Moses called Genesis, Vol. I (trans. John King, Calvin Translation Society, 1847; CCEL text) — Commentary on Genesis 1:1-2 ('In the beginning' — the world created an empty chaos at its commencement)
Evangelical
George Hawkins Pember states that fossil remains are of creatures anterior to Adam and show disease, death, and mutual destruction. They must therefore have belonged to another world with its own sin-stained history, one that ended in the ruin of those creatures and their habitation.
George Hawkins Pember, Earth's Earliest Ages (1889 ed., Hodder and Stoughton) — Chapter on the interval between Genesis 1:1 and 1:2 (the earth described as a ruin)