# @comunica/mediator-combine-pipeline

> A sequential combine mediator

Latest version **5.4.0** (published 2026-09-14) · MIT license · 0 weekly downloads

## Install

```sh
npm install @comunica/mediator-combine-pipeline
pnpm add @comunica/mediator-combine-pipeline
yarn add @comunica/mediator-combine-pipeline
bun add @comunica/mediator-combine-pipeline
```

## Health

**Score 60/100 (C)** — status: active.

Positive: has types; no vulnerabilities; recently updated; high maintenance score.

Warnings: low downloads; no esm support.

## Facts

| | |
|---|---|
| Version | 5.4.0 |
| Published | 2026-09-14 |
| First published | 2018-06-01 |
| Weekly downloads | 0 |
| License | MIT |
| TypeScript types | bundled |
| Module format | CommonJS |
| Dependencies | 2 |
| Unpacked size | 33.8 KB |
| Known vulnerabilities | 0 |
| Install scripts | no |
| GitHub stars | 581 |
| Maintainers | joachimvh, rubensworks, rubenverborgh, dexagod, jeswr |
| Keywords | comunica, runner |

## Links

- npm: https://www.npmjs.com/package/@comunica/mediator-combine-pipeline
- Repository: https://github.com/comunica/comunica
- Homepage: https://comunica.dev/
- Issues: https://github.com/comunica/comunica/issues
- Funding: https://opencollective.com/comunica-association
- npm.io page: https://npm.io/package/@comunica/mediator-combine-pipeline

## Dependencies (2)

- [@comunica/core](https://npm.io/package/@comunica/core.md) ^5.4.0
- [@comunica/types](https://npm.io/package/@comunica/types.md) ^5.4.0

## Recent versions

- 5.4.0 (latest) — 2026-09-14
- 4.4.2-alpha.49.0 (next) — 2025-10-22
- 5.3.0 — 2026-07-10
- 5.2.3 — 2026-05-26
- 5.2.2 — 2026-05-03
- 5.2.0 — 2026-04-14
- 5.1.3 — 2026-01-30
- 5.1.0 — 2026-01-16
- 5.0.3 — 2026-01-12
- 5.0.2 — 2026-01-12
- 5.0.0 — 2026-01-08
- 4.5.0 — 2025-11-18
- 4.4.0 — 2025-09-17
- 4.2.0 — 2025-04-29
- 4.1.0 — 2025-02-11
- … 94 more at https://npm.io/package/@comunica/mediator-combine-pipeline/versions

## README

# Comunica Mediator Sequential

[![npm version](https://badge.fury.io/js/%40comunica%2Fmediator-sequential.svg)](https://www.npmjs.com/package/@comunica/mediator-sequential)

A comunica mediator that goes over all actors in sequence and forwards I/O.
This requires the action input and the actor output to be of the same type.

This module is part of the [Comunica framework](https://github.com/comunica/comunica),
and should only be used by [developers that want to build their own query engine](https://comunica.dev/docs/modify/).

[Click here if you just want to query with Comunica](https://comunica.dev/docs/query/).

## Install

```bash
$ yarn add @comunica/mediator-sequential
```

## Configure

After installing, this mediator can be instantiated as follows:
```text
{
  "@context": [
    ...
    "https://linkedsoftwaredependencies.org/bundles/npm/@comunica/mediator-combine-pipeline/^5.0.0/components/context.jsonld"
  ],
  "actors": [
    ...
    {
      "@type": "SomeActor",
      "someMediator": {
        "@id": "#mediatorOptimizeQueryOperation",
        "@type": "MediatorCombinePipeline",
        "bus": { "@id": "ActorOptimizeQueryOperation:_default_bus" }
      }
    }
  ]
}
```

### Config Parameters

* `bus`: Identifier of the bus to mediate over.
* `filterErrors`: Optional flag to indicate if actors that throw test errors should be filtered out of the pipeline, defaults to false.
* `field`: Optional field to use for ordering (if the ordering strategy is chosen). Leave undefined if the test output is a number rather than an object.
* `order`: Optional strategy of ordering the pipeline (increasing or decreasing).
   * For choosing to leave the order of the pipeline unchanged, leave this undefined.
   * For choosing to order by increasing values: 'increasing'.
   * For choosing to order by decreasing values: 'decreasing'.

---
_Source: https://npm.io/package/@comunica/mediator-combine-pipeline · Machine-readable twin of the npm.io package page. Health data is recomputed on every publish._