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deepseek-harness/website/zh-CN/api/harness/invariants.md
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<!-- Generated by scripts/gen-website-api.ts — do not edit by hand. Run `pnpm run gen-website-api` to regenerate. -->
# ctx.invariants
`InvariantService` — provided by `@deepseek-ai/dsh-invariants`.
Package-owned invariant registry with global and regex-based selection.
[Source](https://github.com/deepseek-harness/deepseek-harness/blob/master/packages/support/invariants/src/index.ts#L388)
### ctx.invariants.register(packageName, installer)
```ts website-api
/**
* Register one package's invariant installer. The package name is reserved
* even when filtering disables its checks. Enabled installers run in a child
* fiber; failure disposes that fiber and releases the reservation.
* @param packageName - full npm package name that owns the contribution.
* @param installer - listener or startup-check installer for the child context.
* @returns an effect-scoped disposer for the registration.
*/
register(packageName: string, installer: InvariantInstaller): () => void
```
Register one package's invariant installer. The package name is reserved even when filtering disables its checks. Enabled installers run in a child fiber; failure disposes that fiber and releases the reservation.
- `packageName` — full npm package name that owns the contribution.
- `installer` — listener or startup-check installer for the child context.
**Returns** an effect-scoped disposer for the registration.
[Source](https://github.com/deepseek-harness/deepseek-harness/blob/master/packages/support/invariants/src/index.ts#L430)