…location headers

The console message had incorrect grammer.

(cherry picked from commit ddcef9d)

…ngularNodeAppEngine

Prioritize constructor options over environment variables when initializing the AngularNodeAppEngine. Previously, environment variables took priority and blindly overrode the constructor options if they were defined in the environment. Now, explicit constructor options act as the override, while the environment variables serve as a fallback.

(cherry picked from commit 5875b60)

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…ge manager

Bun's `pm view` command does not support requesting multiple fields at once (e.g. `pm view <pkg> dist-tags versions --json`), which is required by the default package manager abstraction to fetch package metadata during version compatibility search.

This change introduces a custom `getRegistryMetadata` handler in the package manager descriptor, allowing individual package managers to override registry metadata fetching entirely. The `bun` descriptor now implements this by querying `dist-tags` and `versions` separately in parallel, and returning the aggregated metadata object.

(cherry picked from commit 38e0fab)

…JavaScriptTransformer

Throttle active esbuild transformation requests higher in the pipeline using an asynchronous semaphore queue bounded to maxThreads * 2.

In large monorepo builds (thousands of files), esbuild crawls the import graph via parallel goroutines much faster than Node.js workers can process downleveling and linking. Unthrottled onLoad calls flood libuv's file read pool and accumulate thousands of source buffers in Piscina's task queue.

Throttling active requests higher in the chain keeps libuv's I/O pool free, caps Buffer memory overhead at ~10MB–30MB, and ensures file buffers remain short-lived for quicker GC reclamation.

(cherry picked from commit 583736a)

…ckageManager

Execute package manager subprocess invocations using a semaphore-based backpressure throttle.

When callers perform concurrent registry lookups (such as running Promise.all over candidate
update packages), this prevents unbounded child subprocess spawning. Clamping active concurrent
CLI commands to a fixed limit protects the operating system against process table exhaustion, V8 heap
saturation, and upstream registry rate-limiting while maintaining fast execution.

(cherry picked from commit 3ce6e5f)

Fixes eslint update

(cherry picked from commit a527d02)

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Only cache CommonEngine SSG lookup results after the target file is
confirmed to be a prerendered SSG page.

(cherry picked from commit 37f1a74)

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