mergeExtensions

Call Signature

mergeExtensions(options, …extensions): Extension

Defined in: packages/core/src/presets/merge.ts:79

Merge multiple Extensions into one with last-wins semantics.

Parameters

options

MergeOptions

extensions

…Extension[]

Extensions to merge, in order (earliest first, latest wins).

Returns

Extension

A new Extension containing the merged categories.

Remarks

Merge rules per category:

bins, env, mounts, files, man: later entries overwrite earlier ones. Each override emits a console.warn unless silent is set.
services: deduplicated by name. Later definitions replace earlier ones and emit a warning on collision.

Pass MergeOptions as the first argument to tune warn behavior; otherwise every argument is treated as an Extension.

Example

import { Unix, mergeExtensions, coreutils, shell } from '@fishnet/core'

const merged = mergeExtensions(coreutils(), shell())
const image = await Unix().use(merged).build()

See