# `IConfigurator.connectionsBasis`

> Contract 2.0.0 · package sha256 `a857eca95b35921109faf997094bb4192f12527d9d0fcd4be7e97f06425bad6e` · generated from `configurator-runtime.d.ts` by `services/onsite-scripter/scripts/build-contract-docs.mjs`; edit the source, not this file.

Property of [`IConfigurator`](IConfigurator.md) · stable · since 2.0.0

```ts
connectionsBasis?: string;
```

The basis fingerprint of [`connections`](IConfigurator.connections.md): store [`connectionsBasis(model, connections)`](connectionsBasis.md) with every
save. On restore, a mismatch means the placed nodes changed after the connections were
stored (a v1 re-save keeps both fields unchanged): the runtime restores no connection, records
'connections-outdated', and the app re-assembles once, as for an old save.

**Default:** undefined (no check)

## Generic-API test (spec 3.1)

| Rule | Result |
| --- | --- |
| 1. Neutral name | pass: `connectionsBasis` names no product |
| 2. A precedent | not recorded: no ledger row (coverage.json) names this member or its owner |
| 3. Two apps, or labs | pass: 20 apps (fleet cross-check: app-04c2774145, app-0c773a4ee3, app-37356bf09f, app-4762caacdc, app-4fd23bc869, app-822bb9d6aa, app-8675b3225c, app-b362a81c85 and 12 more) |
| 4. The cheaper fix first | not recorded per member (Appendix B decides it per need) |