1 files changed, 85 insertions, 0 deletions
diff --git a/script/changelog-debug.ts b/script/changelog-debug.ts
new file mode 100644
index 000000000..1144d3b0c
--- /dev/null
+++ b/script/changelog-debug.ts
@@ -0,0 +1,85 @@
+#!/usr/bin/env bun
+
+import { $ } from "bun"
+import { parseArgs } from "util"
+import { getLatestRelease } from "./changelog"
+
+const paths = [
+  "packages/opencode",
+  "packages/sdk",
+  "packages/plugin",
+  "packages/desktop",
+  "packages/app",
+  "sdks/vscode",
+  "packages/extensions",
+  "github",
+]
+
+const clean = (text: string) => text.split("\n").filter(Boolean)
+
+const ref = (value: string, head = false) => {
+  if (head && value === "HEAD") return value
+  if (value.startsWith("v")) return value
+  return `v${value}`
+}
+
+const { values } = parseArgs({
+  args: Bun.argv.slice(2),
+  options: {
+    from: { type: "string", short: "f" },
+    to: { type: "string", short: "t", default: "HEAD" },
+    base: { type: "string", short: "b", default: "origin/dev" },
+    help: { type: "boolean", short: "h", default: false },
+  },
+})
+
+if (values.help) {
+  console.log(`
+Usage: bun script/changelog-debug.ts [options]
+
+Options:
+  -f, --from <version>   Starting version (default: latest GitHub release)
+  -t, --to <ref>         Ending ref (default: HEAD)
+  -b, --base <ref>       Compare base for ahead/behind (default: origin/dev)
+  -h, --help             Show this help message
+
+Examples:
+  bun script/changelog-debug.ts
+  bun script/changelog-debug.ts -f 1.0.200 -t dev
+  bun script/changelog-debug.ts -f 1.0.200 -t HEAD -b origin/dev
+`)
+  process.exit(0)
+}
+
+const to = values.to!
+const from = values.from ?? (await getLatestRelease())
+const fromRef = ref(from)
+const toRef = ref(to, true)
+
+console.log(`Debugging changelog range: ${fromRef} -> ${toRef}\n`)
+
+const [ahead, behind] = await $`git rev-list --left-right --count ${values.base}...HEAD`
+  .text()
+  .then((text) => text.trim().split("\t"))
+
+console.log(`Ahead/behind ${values.base}: ahead=${ahead ?? "0"} behind=${behind ?? "0"}`)
+
+const gh = await $`gh api "/repos/anomalyco/opencode/compare/${fromRef}...${toRef}" --jq '.commits[].sha'`
+  .text()
+  .then(clean)
+
+const localAll = await $`git log ${fromRef}..${toRef} --oneline --format="%H"`.text().then(clean)
+const localFiltered = await $`git log ${fromRef}..${toRef} --oneline --format="%H" -- ${paths}`.text().then(clean)
+
+const ghSet = new Set(gh)
+const missing = localFiltered.filter((hash) => !ghSet.has(hash))
+
+console.log(`GitHub compare commits: ${gh.length}`)
+console.log(`Local commits (all): ${localAll.length}`)
+console.log(`Local commits (filtered paths): ${localFiltered.length}`)
+console.log(`Filtered commits missing from GitHub compare: ${missing.length}`)
+
+if (missing.length > 0) {
+  console.log("\nMissing hashes (first 10):")
+  console.log(missing.slice(0, 10).join("\n"))
+}