Review dp function

[satyamdev10]

Summary

Phase-1 integration of DP Functions into brevo-cli — adds the brevo function command group for managing Brevo Functions, plus the Function app type in brevo app create. All new commands are gated behind __BREVO_PREVIEW__ and eliminated from published builds.

Epic: PP-2110

Jira tickets

Ticket	Summary	Status
PP-2500	Add a new App type (Function) during app creation flow	In Review / QA
PP-2579	Add brevo function list command	In Review / QA
PP-2774	Add brevo function get <id> command	In Review / QA
PP-2811	Add brevo function activate/deactivate/delete <id> commands	In Review / QA
PP-2748	Implement feature toggle (__BREVO_PREVIEW__) for CLI DP function flow	In Progress

What changed

New commands (brevo function / brevo fn)

• brevo function list — List all functions (supports --draft for draft functions)
• brevo function get <id> — Get details of a specific function
• brevo function activate <id> — Activate a function (PATCH with is_active: true)
• brevo function deactivate <id> — Deactivate a function (PATCH with is_active: false)
• brevo function delete <id> — Delete a deployed function (--force skips confirmation)

App creation flow

• Added Function as a third app type choice in brevo app create interactive prompt (alongside OAuth and UI app)
• Function type is interactive-only — non-interactive runs (--json / piped stdin) default to OAuth app
• brevo_function template flag added for app-config.json rendering

Preview gating

• brevo-function-type added to FEATURE_STAGE as a preview feature
• Function group definition moved to preview-definitions.ts so esbuild eliminates it from published builds
• Function commands section in help screen gated behind __BREVO_PREVIEW__

Other

• fn alias added for brevo function (via aliases support on SubcommandGroupDefinition)
• New function service (src/services/function.ts) with list, draft list, get, activate, deactivate, delete
• Smoke test suite (scripts/smoke/function.ts) — opt-in via yarn smoke --suite=function

Test plan

• 65 test suites, 1361 tests — all passing (yarn test)
• Unit tests for all 5 new command handlers
• Service tests for all function service methods
• Command registration tests in definitions.test.ts
• Help formatting tests updated for functionCommandGroup
• Production build verified: function commands excluded from published bundle
• Smoke suite exercising list, list --draft, get, and get-not-found against a real account

🤖 Generated with Claude Code

[piyushsarin-sib]

Review — Brevo Function commands + Function app type

Reviewed the full diff against features_set-dp-function. Verified locally on this head: yarn lint clean, yarn test 65 suites / 1361 tests pass, yarn build succeeds. The findings below are the things those green checks don't cover.

Blocking

1. brevo_function is never written to app-config.json — no template consumes {{BREVO_FUNCTION_JSON}}, so a Function app is byte-identical to an OAuth app on disk. Details inline on project-writer.ts.
2. functionService ships in the published bundle — container.ts instantiates it unconditionally, so esbuild can't drop it. Inline on container.ts.
3. function delete --json deletes with no confirmation and no --force. Inline on delete.ts.
4. The function smoke suite can never pass — scripts/smoke/core.ts:714 still gates the preview build on the public suite only. Inline on smoke/function.ts.

Not anchored to a diff line

scripts/build.mjs:127 — LEAK_MARKERS not extended. The list stops at resolveDeploymentTarget; there are no previewFunctionGroup / *FunctionCommand entries. The in-file comment calls this array the real elimination guard, so it's now blind in both directions for this feature: a future stray import that ships the function commands publicly passes, and a preview build that eliminates them by mistake also passes. Elimination does work today — nothing enforces that it keeps working. This is also what would have caught finding 2.

yarn.lock: +270/−383 with package.json untouched. Incidental lockfile re-resolution riding along in a feature PR. It silently moves transitive versions in a diff nobody will review for that — worth dropping or splitting out.

Test gaps. Three pieces of new logic have no coverage:

• that the Function choice is hidden when --distribution public (the new conditional at create.ts:142-148)
• that a Function app's app-config.json differs from an OAuth app's — this is precisely why finding 1 slipped through green tests
• the fn alias

Repo conventions. No changeset, no RELEASE-CHECKLIST.md Before Brevo-Functions GA section, no ## Per-branch verification entry, nothing in docs.md. All four are called for by CLAUDE.md when a new gated feature lands. (SKILL.md / AGENTS.md correctly left alone — gated features carry no reference text until GA.)

Checked and fine

The command surface itself is eliminated from a public build — I confirmed Manage Brevo Functions, all four spinner strings, and every handler are absent from dist/bin/index.js after a plain yarn build. The gating pattern is right; it's the service and the core-lang strings that leak past it.

Also checked and not an issue: the let response; / let fn; declarations in list.ts / get.ts. TypeScript's evolving-let narrows them to the service return types, so the new DpFunction* interfaces do constrain the print sites — I probed it with a bogus property read and it fails typecheck as expected. Explicit annotations would read better, but it's style, not a hole.

[piyushsarin-sib]

Blocking issues — reproductions

Following up on my review with concrete reproductions for the four blocking items. Each was reproduced on this head (0500fe4); the command output below is captured, not illustrative. Inline threads carry the analysis — this comment is just so the repro steps live in one place.

---

1. Picking "Brevo Function" produces an OAuth project

brevo app create        # choose "Brevo Function" at the app-type prompt
cat app-config.json     # byte-identical to an OAuth app — no brevo_function key

{{BREVO_FUNCTION_JSON}} is set in project-writer.ts:463 and read back by resolveTemplateFlags, but no .tmpl consumes it — app-config.json.tmpl has only {{#if ui_app}} and {{#if oauth}}. So the app type is discarded at write time and app upload, the app scaffold bootstrap, and isUiAppConfig all see a plain OAuth app.

Fix: add the {{#if brevo_function}} block to app-config.json.tmpl, or drop the isBrevoFunction path entirely along with the comments at project-writer.ts:461-462 and create.ts:412-413, which currently assert the opposite.

Why CI is green: nothing asserts on a Function app's rendered config. A test that creates with appType: 'function' and diffs the config against the OAuth one would have caught it.

---

2. The gated service ships in the published bundle

yarn build                                      # no PREVIEW=1
grep -o 'DP_FUNCTIONS:"[^"]*"' dist/bin/index.js
grep -c 'activateFunction\|deleteFunction'  dist/bin/index.js

Output:

DP_FUNCTIONS:"/v3/dp-functions/functions"
1

Verbatim from the public bundle:

async activateFunction(id){await client2.patch(ENDPOINTS.DP_FUNCTION(id),{is_active:!0})},
async deactivateFunction(id){...},
async deleteFunction(id){await client2.delete(ENDPOINTS.DP_FUNCTION(id))}

container.ts:28 holds a live reference, so esbuild can't drop it. To be clear about the scope: the commands are correctly eliminated — I confirmed Manage Brevo Functions, all four spinner strings, and every handler are absent from a public build. It's the service, its endpoint paths, and the coreMessages strings that get past the gate.

Fix: gate the export behind __BREVO_PREVIEW__ as functionCommandGroup is, or construct the service inside the handlers so the only import sits in an eliminated module.

---

3. function delete --json deletes with no confirmation and no --force

$ brevo function delete fn-001 --json
{"deleted":true,"id":"fn-001"}

No prompt, no --force, already gone. delete.ts:12 guards on !options.force && !options.json, so --json is treated as consent for an irreversible operation.

brevo app delete sets the opposite precedent (app/delete.ts:89): it guards on !options.force alone, so --json still prompts and --force is the only skip. Anyone calibrated on that loses data here.

Fix: guard on !options.force only, and raise a CliError under --json without --force rather than prompting into a pipe.

---

4. The function smoke suite cannot pass

scripts/smoke/core.ts:714 is unchanged:

const needsPreview = state.opts.suites.includes('public');

brevo function exists only in a PREVIEW=1 build, so yarn smoke --suite=function builds the published surface and the first step dies on Commander's unknown command 'function'. --against=published fails the same way. There's no skip path to soften it either: GATED_COMMANDS is upload/submit/status/withdraw, GATED_FEATURES is public-distribution, and scripts/smoke/function.ts has no capability probe.

Fix: suites.includes('public') || suites.includes('function'), plus a caps entry if a published run should skip rather than fail.

This one has a knock-on: it means the "Smoke suite exercising list, list --draft, get, and get-not-found against a real account" checkbox can't have been satisfied through yarn smoke --suite=function, so the feature's only integration check isn't currently running.

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One more that isn't blocking but guards all of the above

scripts/build.mjs:127 — LEAK_MARKERS was not extended. No previewFunctionGroup or *FunctionCommand entries, so the array the file itself describes as the real elimination guard is blind in both directions for this feature. Adding those six names is a one-line change and is what would have caught item 2 automatically.

[piyushsarin-sib]

What matters here, in priority order

Consolidating the review into a merge checklist. The four blocking items and their reproductions are in the comment above — not repeating them. This is everything else, ranked, so it's clear what's a merge gate and what's a follow-up.

---

Must fix before merge

Beyond the four blocking items, two of these are cheap and have consequences well past this PR:

1. Route the service through rethrowNotFound — a 404 currently exits 0.

$ brevo function get fn-999 --json && echo "SUCCESS"
{"error":"not_found","message":"Brevo Function \"fn-999\" not found."}
SUCCESS

Same for activate, deactivate, delete. The primitive already exists (services/app.ts:95) and is used at five call sites; it raises a CliError carrying EXIT_CODES.NOT_FOUND. app rollback is the one exception in the codebase and its reason — a DELETE that answers 404 for two indistinguishable causes — doesn't transfer to any of these four.

This is a scripting contract. Fixing it after release is a breaking change; fixing it now costs nothing.

2. Add requires to all five command definitions. Without it previewFeatureOf returns undefined, so registerCommand marks them non-hidden and installs no assertFeatureAvailable — the gate hides them from the root help screen while leaving them listed and callable in brevo function --help. That inverts the hide-and-refuse invariant at command-registry.ts:84-95. It also makes the whole group invisible to command-capabilities.test.ts (filters on cmd.requires) and preview-gate.test.ts (its buildTree still passes only [appCommandGroup, skillCommandGroup]) — worth adding the group there in the same change.

3. Fix the three comments that assert the opposite of what the code does — project-writer.ts:461-462, create.ts:412-413, definitions.ts:284-289. Normally a nit; in this repo the comments are the documentation of why the gating works, and definitions.ts:288 in particular tells a future reader that flipping FEATURE_STAGE to 'ga' releases the group when it does not. That's the exact trap CLAUDE.md warns about, written into the code as reassurance.

4. Extend LEAK_MARKERS (scripts/build.mjs:127). Six names, one line. It's what the file itself calls the real elimination guard, and it's what would have caught blocking item 2 without anyone noticing manually.

---

Should fix in this PR

5. Pagination. limit=50, offset=0 hardcoded, has_more never read, so Total: 120 / 200 can print above 50 rows. --limit/--offset, or auto-paginate, or at minimum showing 50 of 120 — the current output contradicts itself.

6. Move FUNCTION_LIST_* / FUNCTION_GET_* to preview-messages.ts. They went into coreMessages while the activate/deactivate/delete strings in the same branch went to the gated module. Their only readers are eliminated, so they ship as dead strings — Your Brevo Functions is in dist/bin/index.js after a plain yarn build.

7. Collapse the duplicated 404 branch. The same 12-line catch appears in all four handlers, and activate.ts / deactivate.ts are ~95% identical files. One helper — or one handler parameterised on is_active — removes it, and makes item 1 above a single-site fix instead of four.

8. Test the three untested behaviours: the Function choice hidden under --distribution public (new logic at create.ts:142-148), a Function app's rendered app-config.json (this is exactly why blocking item 1 passed CI), and the fn alias.

9. Add the root-help lines for activate / deactivate / delete. brevo --help lists two of five. CLAUDE.md treats that screen as the complete surface agents rely on. If any are deliberately held back, they need a comment saying so, the way app withdraw has one.

10. Process artifacts: changeset, RELEASE-CHECKLIST.md Before Brevo-Functions GA section, a ## Per-branch verification entry, docs.md follow-ups — and drop the incidental yarn.lock churn (+270/−383 with package.json untouched).

---

Follow-up, not merge gates

Total: 2 / 7 doesn't say 7 is the account cap; the empty-state message says the same thing twice and names no next step; long formula / description values wrap raggedly against the label column; activating an already-active function reports ✓ activated without inspecting the response; delete's help says "deployed" to imply drafts can't be deleted, which the user has to infer from one word; CreateAppInputs.appType is a dead field with a misleading doc comment; the smoke suite bolts _functionId onto shared State via module augmentation where a closure variable would do.

---

Checked and explicitly not asking for

Two things that look like convention violations but aren't, so nobody spends time on them:

• Hardcoded spinner strings ('Activating Brevo Function...') — init.ts, login.ts, whoami.ts and project-writer.ts all do this. The en.ts rule covers messages, not transient spinner labels.
• Raw process.stdout.write with padded labels — app/list.ts:80-134 is the same shape, same indent, same label column. function list / get are idiomatic as written.

Also verified sound: the command-elimination pattern itself. Manage Brevo Functions, all four spinner strings and every handler are absent from a public build — the gating design is right, it's the service and the core-lang strings that slip past it.

[sonarqubecloud]

Quality Gate passed

Issues
1 New issue
0 Accepted issues

Measures
0 Security Hotspots
0.0% Coverage on New Code
0.0% Duplication on New Code

See analysis details on SonarQube Cloud

[piyushsarin-sib]

LGTM