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feat(typescript): add table branch support

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This commit is contained in:
Brendan Clement
2026-06-02 17:29:41 -07:00
parent 341cb04c2f
commit 2ca6d41f17
3 changed files with 163 additions and 1 deletions
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33
nodejs/__test__/table.test.ts
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@@ -85,6 +85,39 @@ describe.each([arrow15, arrow16, arrow17, arrow18])(
await expect(table.countRows()).resolves.toBe(3);
});
it("should support branches", async () => {
await table.add([{ id: 1 }]);
expect(await table.countRows()).toBe(1);
// fork an isolated, writable branch from main
const branch = await (await table.branches()).create("exp");
expect(await branch.countRows()).toBe(1);
await branch.add([{ id: 2 }]);
expect(await branch.countRows()).toBe(2);
// main is untouched by branch writes
expect(await table.countRows()).toBe(1);
// listed, with main (null) as the parent
const list = await (await table.branches()).list();
expect(Object.keys(list)).toContain("exp");
expect(list["exp"].parentBranch).toBeNull();
// fromRef="main" is equivalent to the default
await (await table.branches()).create("exp2", "main");
const list2 = await (await table.branches()).list();
expect(list2["exp2"].parentBranch).toBeNull();
// checkout returns a handle scoped to the branch's latest
const checkedOut = await (await table.branches()).checkout("exp");
expect(await checkedOut.countRows()).toBe(2);
// delete removes it
await (await table.branches()).delete("exp");
await (await table.branches()).delete("exp2");
const after = await (await table.branches()).list();
expect(Object.keys(after)).not.toContain("exp");
});
it("should show table stats", async () => {
await table.add([{ id: 1 }, { id: 2 }]);
await table.add([{ id: 1 }]);