sandbox-diff

Text diffs in the sandbox

Specifier: @nodetool-ai/sandbox-diff. Import it at the top of the body.

The diff library schedules with setTimeout, and the guest has no timers, so it cannot be compiled in. This pack is a host module: the import resolves to a generated facade over NodeTool's own implementation.

unified — a unified diff of two texts

import { unified } from "@nodetool-ai/sandbox-diff";

const patch = await unified(inputs.before, inputs.after, {
  oldName: "before.md",
  newName: "after.md",
  context: 5
});
return { patch, changed: patch.includes("@@") };

Options: context (lines of context, 0–100, default 3), oldName, newName. Identical inputs produce a header with no hunks, so includes("@@") is the cheap "did anything change" test — handy in a verify loop.

Gotchas

• unified is async.
• 5 MB per side. Larger input is refused by name.
• Line-oriented. Two texts that differ only in trailing whitespace still diff; normalize first if that is noise.