|
| 1 | +--- |
| 2 | +name: branch-readiness-checks |
| 3 | +description: "Validate branch readiness before push or PR using base-diff and local-change checks." |
| 4 | +disable-model-invocation: true |
| 5 | +--- |
| 6 | + |
| 7 | +# Branch Readiness |
| 8 | + |
| 9 | +Run focused checks before push/PR. |
| 10 | + |
| 11 | +## Command Timing |
| 12 | + |
| 13 | +Use bounded polling rather than agent-specific timeout fields. |
| 14 | +For each command, set a `max_wait_ms`, poll every `poll_interval_ms`, and stop when the command completes or the max wait is reached. |
| 15 | +If `max_wait_ms` is exceeded, report a timeout and continue to the next workflow step. |
| 16 | + |
| 17 | +| Command type | `max_wait_ms` | `poll_interval_ms` | |
| 18 | +|---|---:|---:| |
| 19 | +| `git diff`, `git merge-base` | 15000 | 1000 | |
| 20 | +| `node scripts/check_changes.ts --ref "$BASE"` | 180000 | 2000 | |
| 21 | +| `node scripts/lint_ts_projects.js`, `yarn test:type_check --project` | 120000 | 2000 | |
| 22 | +| `node scripts/generate codeowners`, `node scripts/regenerate_moon_projects.js` | 60000 | 2000 | |
| 23 | +| `yarn test:jest` (per package) | 300000 | 5000 | |
| 24 | + |
| 25 | +## Workflow |
| 26 | + |
| 27 | +Run these steps **sequentially**. Continue through all steps even if one fails. |
| 28 | +At the end, summarize issues that are likely to fail CI. |
| 29 | + |
| 30 | +### Step 0: Identify affected packages |
| 31 | + |
| 32 | +Collect changes relative to branch base, including untracked files. Detect the base branch rather than assuming `main`: |
| 33 | + |
| 34 | +```bash |
| 35 | +BASE=$(git merge-base HEAD main 2>/dev/null || git merge-base HEAD origin/main) |
| 36 | +# Files changed since the branch base (committed + working tree changes). |
| 37 | +git diff --name-only "$BASE" |
| 38 | +# Untracked files. |
| 39 | +git ls-files --others --exclude-standard |
| 40 | +``` |
| 41 | + |
| 42 | +Combine and deduplicate results. From the changed file paths, identify: |
| 43 | +- The affected packages — walk up from each changed file to the nearest `kibana.jsonc` and read its `id` field for the package ID. |
| 44 | +- The `tsconfig.json` files for those packages (sibling to `kibana.jsonc`). |
| 45 | + |
| 46 | +**Prerequisite check**: verify the TS project map exists by running a quick type check on one package. If it fails with `TS Project map missing`, **stop** and ask the user if they'd like you to run `yarn kbn bootstrap`. Once bootstrap completes (or if the user declines), proceed with the remaining steps. |
| 47 | + |
| 48 | +### Step 1: Run `check_changes` against branch base |
| 49 | + |
| 50 | +Run `check_changes` using the `BASE` computed in Step 0: |
| 51 | + |
| 52 | +```bash |
| 53 | +node scripts/check_changes.ts --ref "$BASE" |
| 54 | +``` |
| 55 | + |
| 56 | +Record failures in the final summary, then continue with the remaining steps. |
| 57 | + |
| 58 | +### Step 2: Lint TS projects |
| 59 | + |
| 60 | +Validate and auto-fix `tsconfig.json` files across affected packages. |
| 61 | + |
| 62 | +```bash |
| 63 | +node scripts/lint_ts_projects.js --fix |
| 64 | +``` |
| 65 | + |
| 66 | +This runs repo-wide but is fast. Note files modified by `--fix` and report any remaining errors. |
| 67 | + |
| 68 | +### Step 3: Type check |
| 69 | + |
| 70 | +Run type checking scoped to each affected package's `tsconfig.json`. |
| 71 | +Only one `--project` flag per invocation — run separate commands for each package. |
| 72 | + |
| 73 | +```bash |
| 74 | +yarn test:type_check --project path/to/tsconfig.json |
| 75 | +``` |
| 76 | + |
| 77 | +**Also check downstream dependents** — find packages whose `kbn_references` include any affected |
| 78 | +package ID and type-check those too. This catches cross-package breakage that CI's full |
| 79 | +`tsc -b tsconfig.refs.json` would find. |
| 80 | + |
| 81 | +Use `rg` if available, otherwise fall back to `grep`: |
| 82 | + |
| 83 | +```bash |
| 84 | +# Preferred (rg). |
| 85 | +rg -l '"@kbn/affected-package-id"' --glob 'tsconfig.json' . |
| 86 | +# Fallback (grep). |
| 87 | +grep -rl '"@kbn/affected-package-id"' --include='tsconfig.json' . |
| 88 | +``` |
| 89 | + |
| 90 | +Deduplicate against already-checked packages. If a package has more than **20** downstream |
| 91 | +tsconfigs, skip the downstream check and warn the user that a full `tsc -b` may be needed. |
| 92 | + |
| 93 | +### Step 4: Unit tests |
| 94 | + |
| 95 | +Run unit tests **per affected package** with coverage enabled. |
| 96 | + |
| 97 | +```bash |
| 98 | +yarn test:jest --coverage path/to/package/src/ |
| 99 | +``` |
| 100 | + |
| 101 | +If your environment provides a package-scoped unit-test tool, use the equivalent command. |
| 102 | + |
| 103 | +After the run, read the coverage summary output and report overall line/branch/function coverage percentages per package. Flag any package whose line coverage is **below 80%** and provide recommendations to bring it above that threshold. Use specific uncovered files or line ranges when the coverage output provides them. |
| 104 | + |
| 105 | +### Step 5: CODEOWNERS generation |
| 106 | + |
| 107 | +Regenerate the CODEOWNERS file from `kibana.jsonc` owner fields. |
| 108 | + |
| 109 | +```bash |
| 110 | +node scripts/generate codeowners |
| 111 | +``` |
| 112 | + |
| 113 | +Check `git diff .github/CODEOWNERS` afterward — if the file changed, note it in the summary. |
| 114 | + |
| 115 | +### Step 6: Moon project regeneration |
| 116 | + |
| 117 | +Regenerate moon project configs. |
| 118 | + |
| 119 | +```bash |
| 120 | +node scripts/regenerate_moon_projects.js --update |
| 121 | +``` |
| 122 | + |
| 123 | +Check for unstaged changes afterward — if any moon configs changed, note them in the summary. |
| 124 | + |
| 125 | +## Re-runs within the same session |
| 126 | + |
| 127 | +If the user asks to re-run branch-readiness checks after fixes, or if you make changes due to failures, run all steps again. |
| 128 | + |
| 129 | +## After all checks have run |
| 130 | + |
| 131 | +Report a summary including: |
| 132 | +- Check changes pass/fail and key failures (if any). |
| 133 | +- TS project lint pass/fail. |
| 134 | +- Type check pass/fail per package (or "skipped" if unchanged). |
| 135 | +- Test results and coverage per package (or "skipped" if unchanged); flag packages below 80% line coverage. |
| 136 | +- Whether CODEOWNERS or moon configs need to be committed. |
| 137 | + |
| 138 | +### Offering to Fix Issues |
| 139 | + |
| 140 | +After reporting the summary, offer fixes by risk level: |
| 141 | + |
| 142 | +- **Check changes failures, type errors, and TS project lint errors not resolved by `--fix`** — offer to fix automatically when mechanical and low risk. |
| 143 | +- **Test failures** — ask before touching test code. Test fixes can change intent, so the user should confirm before proceeding. |
| 144 | +- **Coverage gaps (below 80%)** — offer to add tests for uncovered code, but ask first. Coverage improvements are optional and the user may choose to defer them. |
| 145 | + |
| 146 | +Do **not** commit or stage automatically — let the user decide. |
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