refactor(web): rewrite webserver as a plain route-registration plugin

HttpServerService provides ctx.httpServer: register(route) -> disposer
(duplicate patterns throw), tapIndex transforms in registration order, and
the bound port; matching is exact > longest prefix > static dist fallback
(403/405/SPA semantics preserved). The server listens on activation, answers
per-request failures with 400 + a log line instead of exiting the process,
and knows no harness concepts — the boot graph, bundle routes, SSE channel,
and /api prefix all moved to their owning plugins.
This commit is contained in:
imccyu
2026-07-25 01:18:29 +08:00
parent 3cad7f6957
commit f499872cec
10 changed files with 194 additions and 1449 deletions
@@ -1,50 +0,0 @@
/**
* Webserver invariant companion: the boot-graph consistency audit — every
* fetch-arrival graph row must resolve a clientPath, checked on fiber
* lifecycle events against the assembly-published 'webPlugins' context key.
*/
import { Context } from 'cordis'
import { describe, expect, it } from 'vitest'
import InvariantService from '@deepseek-ai/dsh-invariants'
import * as WebserverInvariant from '../src/invariant.ts'
interface RegistryStub {
graph(): { entries: { id: string; url: string }[] }
clientPath(id: string): string | undefined
}
async function setup(registry?: RegistryStub): Promise<Context> {
const ctx = new Context()
await ctx.plugin(InvariantService, { enabled: true })
await ctx.plugin(WebserverInvariant).await()
if (registry !== undefined) ctx.reflect.provide('webPlugins', registry)
return ctx
}
/** Fire the audit trigger directly (same technique as the scope invariant
* spec): a synchronous emit propagates the fail() throw to the caller. */
function trigger(ctx: Context): void {
;(ctx.emit as (event: string, ...args: unknown[]) => void)('internal/plugin', ctx.fiber)
}
describe('webserver manifest invariant', () => {
it('stays silent without a registry (carrier-only deployment) and with a consistent table', async () => {
const bare = await setup()
expect(() => { trigger(bare) }).not.toThrow() // no 'webPlugins' key published
const consistent = await setup({
graph: () => ({ entries: [{ id: 'p1', url: '/plugins/p1/client.js?rev=abc' }] }),
clientPath: id => id === 'p1' ? '/tmp/p1/lib/client.js' : undefined,
})
expect(() => { trigger(consistent) }).not.toThrow()
})
it('throws on a graph row whose bundle path no longer resolves', async () => {
const ctx = await setup({
graph: () => ({ entries: [{ id: 'ghost', url: '/plugins/ghost/client.js?rev=abc' }] }),
clientPath: () => undefined,
})
expect(() => { trigger(ctx) })
.toThrow(/graph row "ghost".*resolves no client bundle path/)
})
})
@@ -1,347 +0,0 @@
import {
mkdirSync,
mkdtempSync,
statSync,
type PathLike,
type Stats,
unlinkSync,
utimesSync,
writeFileSync,
} from 'node:fs'
import { tmpdir } from 'node:os'
import { join } from 'node:path'
import { Context } from 'cordis'
import { afterEach, describe, expect, it, vi } from 'vitest'
import { createHostWebPluginRegistry, injectBootManifest } from '../src/index.ts'
import type { LoaderEntryView, WebPluginRegistryDeps } from '../src/index.ts'
const fsControl = vi.hoisted(() => ({ failNextStatPath: undefined as string | undefined }))
vi.mock('node:fs', async (importOriginal) => {
const actual = await importOriginal<typeof import('node:fs')>()
return {
...actual,
statSync: (path: PathLike): Stats => {
if (String(path) === fsControl.failNextStatPath) {
fsControl.failNextStatPath = undefined
throw Object.assign(new Error('staged bundle missing'), { code: 'ENOENT' })
}
return actual.statSync(path)
},
}
})
afterEach(() => {
fsControl.failNextStatPath = undefined
vi.useRealTimers()
})
/** Write a fake installed package (package.json + optional client bundle) and return its package.json path. */
function makePkg(root: string, name: string, pkg: Record<string, unknown>, withBundle = true): string {
const dir = join(root, name.replaceAll('/', '__'))
mkdirSync(join(dir, 'lib'), { recursive: true })
writeFileSync(join(dir, 'package.json'), JSON.stringify({ name, ...pkg }))
if (withBundle) writeFileSync(join(dir, 'lib', 'client.js'), `// bundle of ${name}`)
return join(dir, 'package.json')
}
const webDecl = (extra: Record<string, unknown> = {}): Record<string, unknown> => ({
dshClient: { inject: [], platform: 'web', ...extra },
exports: { '.': './lib/index.js', './client': './lib/client.js' },
})
interface Fixture {
deps: WebPluginRegistryDeps
entries: LoaderEntryView[]
errors: Error[]
ctx: Context
root: string
}
function makeDeps(
specs: { name: string; pkg: Record<string, unknown>; loaded?: boolean; disabled?: boolean; withBundle?: boolean }[],
): Fixture {
const root = mkdtempSync(join(tmpdir(), 'dsh-webplugins-'))
const paths = new Map<string, string>()
const entries: LoaderEntryView[] = specs.map((spec) => {
paths.set(spec.name, makePkg(root, spec.name, spec.pkg, spec.withBundle ?? true))
return { options: { name: spec.name }, fiber: spec.loaded === false ? undefined : {}, disabled: spec.disabled ?? false }
})
const ctx = new Context()
const errors: Error[] = []
const deps: WebPluginRegistryDeps = {
ctx,
loader: { entries: () => entries },
resolvePkgJson: (name) => {
const path = paths.get(name)
if (path === undefined) throw new Error(`unresolvable ${name}`)
return path
},
onError: err => void errors.push(err),
}
return { deps, entries, errors, ctx, root }
}
describe('createHostWebPluginRegistry', () => {
it('discovers dshClient rows with rev-stamped urls, manifest inject edges, and the declared immediately mark', () => {
const { deps } = makeDeps([
{ name: '@deepseek-ai/dsh-client-connection', pkg: webDecl({ immediately: true }) },
{ name: '@deepseek-ai/dsh-client-ui-layout', pkg: webDecl({ inject: ['@deepseek-ai/dsh-client-runtime'] }) },
{ name: '@deepseek-ai/dsh-agent', pkg: { exports: { '.': './lib/index.js' } } }, // no dshClient: skipped
])
const registry = createHostWebPluginRegistry(deps)
const graph = registry.graph()
expect(graph.rev).toMatch(/^[0-9a-f]{12}$/)
const connection = graph.entries[0]
expect(connection?.id).toBe('@deepseek-ai/dsh-client-connection')
expect(connection?.rev).toMatch(/^[0-9a-f]{12}$/)
expect(connection?.url).toBe(`/plugins/@deepseek-ai/dsh-client-connection/client.js?rev=${connection?.rev ?? ''}`)
expect(connection?.immediately).toBe(true)
const layout = graph.entries[1]
expect(layout?.id).toBe('@deepseek-ai/dsh-client-ui-layout')
expect(layout?.inject).toEqual(['@deepseek-ai/dsh-client-runtime'])
expect(layout?.immediately).toBeUndefined()
expect(graph.entries).toHaveLength(2)
expect(registry.clientPath('@deepseek-ai/dsh-client-ui-layout')).toMatch(/lib[/\\]client\.js$/)
expect(registry.clientPath('@deepseek-ai/dsh-agent')).toBeUndefined()
registry.dispose()
})
it('skips entries that are unloaded, disabled, or declare another platform', () => {
const { deps } = makeDeps([
{ name: 'not-loaded', pkg: webDecl(), loaded: false },
{ name: 'disabled', pkg: webDecl(), disabled: true },
{ name: 'electron-only', pkg: { dshClient: { platform: 'electron' }, exports: { './client': './lib/client.js' } } },
])
const registry = createHostWebPluginRegistry(deps)
expect(registry.graph().entries).toEqual([])
registry.dispose()
})
it('fails loud at build time on a dshClient declaration without a "./client" export', () => {
const { deps } = makeDeps([
{ name: 'broken', pkg: { dshClient: { platform: 'web' }, exports: { '.': './lib/index.js' } } },
])
expect(() => createHostWebPluginRegistry(deps)).toThrow(/declares dshClient but exports no/)
})
it('fails loud at build time on a registered bundle that is not built (rev hashing reads the file)', () => {
const { deps } = makeDeps([{ name: 'unbuilt', pkg: webDecl(), withBundle: false }])
expect(() => createHostWebPluginRegistry(deps)).toThrow(/ENOENT/)
})
it('fails loud on malformed declaration fields', () => {
for (const dshClient of [42, { platform: 7 }, { platform: 'web', inject: 'nope' }, { platform: 'web', immediately: 'yes' }]) {
const { deps } = makeDeps([{ name: 'bad', pkg: { dshClient, exports: { './client': './lib/client.js' } } }])
expect(() => createHostWebPluginRegistry(deps)).toThrow(/dshClient/)
}
})
it('rebuilt(id) re-hashes the bundle, updates the row and graph rev, and keeps the immediately mark', () => {
const { deps, root } = makeDeps([{ name: 'hot', pkg: webDecl({ immediately: true }) }])
const registry = createHostWebPluginRegistry(deps)
const before = registry.graph()
const beforeRow = before.entries.find(e => e.id === 'hot')
writeFileSync(join(root, 'hot', 'lib', 'client.js'), '// rebuilt bundle contents')
const rev = registry.rebuilt('hot')
expect(rev).toMatch(/^[0-9a-f]{12}$/)
expect(rev).not.toBe(beforeRow?.rev)
const after = registry.graph()
const afterRow = after.entries.find(e => e.id === 'hot')
expect(afterRow?.rev).toBe(rev)
expect(afterRow?.url).toBe(`/plugins/hot/client.js?rev=${rev ?? ''}`)
expect(afterRow?.immediately).toBe(true)
expect(after.rev).not.toBe(before.rev)
// Unknown ids are not rebuildable.
expect(registry.rebuilt('nope')).toBeUndefined()
registry.dispose()
})
it('watch mode: a bundle content change re-hashes the row and notifies onRebuilt; dispose stops the watch', async () => {
const { deps, root } = makeDeps([{ name: 'watched', pkg: webDecl() }])
deps.watch = { intervalMs: 20 }
const registry = createHostWebPluginRegistry(deps)
const before = registry.graph().entries[0]?.rev
const rebuilds: { id: string; rev: string }[] = []
registry.onRebuilt((id, rev) => rebuilds.push({ id, rev }))
writeFileSync(join(root, 'watched', 'lib', 'client.js'), '// new bundle contents')
await vi.waitFor(() => { expect(rebuilds).toHaveLength(1) }, { timeout: 5000 })
expect(rebuilds[0]?.id).toBe('watched')
expect(rebuilds[0]?.rev).not.toBe(before)
expect(registry.graph().entries[0]?.rev).toBe(rebuilds[0]?.rev)
registry.dispose()
writeFileSync(join(root, 'watched', 'lib', 'client.js'), '// post-dispose contents')
await new Promise((resolve) => { setTimeout(resolve, 100) })
expect(rebuilds).toHaveLength(1)
})
it('watch mode: a failed rescan baseline preserves the published table and graph', async () => {
const { deps, entries, errors, ctx, root } = makeDeps([
{ name: 'stable', pkg: webDecl() },
{ name: 'late', pkg: webDecl(), loaded: false },
])
deps.watch = { intervalMs: 1_000 }
const registry = createHostWebPluginRegistry(deps)
const before = registry.graph()
;(entries[1] as { fiber?: unknown }).fiber = {}
fsControl.failNextStatPath = join(root, 'late', 'lib', 'client.js')
ctx.emit('internal/plugin', ctx.fiber)
await Promise.resolve()
expect(errors[0]?.message).toContain('staged bundle missing')
expect(registry.graph()).toBe(before)
expect(registry.clientPath('late')).toBeUndefined()
ctx.emit('internal/plugin', ctx.fiber)
await Promise.resolve()
expect(registry.graph().entries.map(row => row.id)).toEqual(['stable', 'late'])
registry.dispose()
})
it('watch mode: a missing bundle forces a re-hash when identical metadata reappears', async () => {
vi.useFakeTimers()
const { deps, root } = makeDeps([{ name: 'watched', pkg: webDecl() }])
const bundle = join(root, 'watched', 'lib', 'client.js')
const fixedTime = new Date(1_600_000_000_000)
utimesSync(bundle, fixedTime, fixedTime)
deps.watch = { intervalMs: 20 }
const registry = createHostWebPluginRegistry(deps)
const baseline = statSync(bundle)
const rebuilds: { id: string; rev: string }[] = []
registry.onRebuilt((id, rev) => rebuilds.push({ id, rev }))
unlinkSync(bundle)
await vi.advanceTimersByTimeAsync(20)
writeFileSync(bundle, 'x'.repeat(baseline.size))
utimesSync(bundle, fixedTime, fixedTime)
const restored = statSync(bundle)
expect({ mtimeMs: restored.mtimeMs, size: restored.size }).toEqual({
mtimeMs: baseline.mtimeMs,
size: baseline.size,
})
await vi.advanceTimersByTimeAsync(20)
expect(rebuilds).toHaveLength(1)
expect(registry.graph().entries[0]?.rev).toBe(rebuilds[0]?.rev)
registry.dispose()
})
it('rejects a non-positive or non-integer watch interval at build time', () => {
for (const intervalMs of [0, -5, 1.5]) {
const { deps } = makeDeps([{ name: 'p', pkg: webDecl() }])
deps.watch = { intervalMs }
expect(() => createHostWebPluginRegistry(deps)).toThrow(/watch\.intervalMs/)
}
})
it('rescans on internal/plugin (debounced) and keeps the old graph when a rescan fails', async () => {
const { deps, entries, errors, ctx } = makeDeps([
{ name: 'late-loader', pkg: webDecl(), loaded: false },
])
const registry = createHostWebPluginRegistry(deps)
expect(registry.graph().entries).toEqual([])
// Entry finishes loading; a fiber lifecycle event triggers the debounced rescan.
;(entries[0] as { fiber?: unknown }).fiber = {}
ctx.emit('internal/plugin', ctx.fiber)
ctx.emit('internal/plugin', ctx.fiber) // debounce: two emissions, one rescan
await Promise.resolve()
expect(registry.graph().entries.map(row => row.id)).toEqual(['late-loader'])
// A failing rescan reports the error and keeps serving the previous graph.
entries.push({ options: { name: 'ghost' }, fiber: {}, disabled: false })
ctx.emit('internal/plugin', ctx.fiber)
await Promise.resolve()
expect(errors).toHaveLength(1)
expect(registry.graph().entries.map(row => row.id)).toEqual(['late-loader'])
// After dispose, further fiber events no longer rescan.
registry.dispose()
entries.pop()
ctx.emit('internal/plugin', ctx.fiber)
await Promise.resolve()
expect(errors).toHaveLength(1)
})
})
describe('injectBootManifest', () => {
it('injects the graph as the first script inside <head> and escapes </script> breakouts', () => {
const html = '<html><head><script src="app.js"></script></head><body></body></html>'
const out = injectBootManifest(html, {
rev: 'r1',
entries: [{ id: 'x</script><script>alert(1)', url: '/plugins/x/client.js?rev=r2', rev: 'r2' }],
})
expect(out.indexOf('window.__DSH_BOOT__')).toBeLessThan(out.indexOf('app.js'))
expect(out).not.toContain('</script><script>alert(1)')
expect(out).toContain('\\u003c/script')
})
it('prepends when the page has no <head>', () => {
const out = injectBootManifest('<body>x</body>', { rev: 'r0', entries: [] })
expect(out.startsWith('<script>window.__DSH_BOOT__')).toBe(true)
})
})
describe('clientExportOf shapes (through the registry build)', () => {
it('accepts the conditional {types, default} export form', () => {
const { deps } = makeDeps([{
name: 'conditional',
pkg: {
dshClient: { platform: 'web' },
exports: { './client': { types: './lib/types/client/index.d.ts', default: './lib/client.js' } },
},
}])
const registry = createHostWebPluginRegistry(deps)
expect(registry.clientPath('conditional')).toMatch(/lib[/\\]client\.js$/)
registry.dispose()
})
it('rejects a conditional form without a string default, an array form, and a non-object exports field', () => {
for (const exportsField of [
{ './client': { types: './x.d.ts' } },
{ './client': ['./a.js'] },
]) {
const { deps } = makeDeps([{ name: 'bad-shape', pkg: { dshClient: { platform: 'web' }, exports: exportsField } }])
expect(() => createHostWebPluginRegistry(deps)).toThrow(/unsupported shape/)
}
// Non-object exports: treated as "no ./client export" → the declares-but-no-bundle throw.
const { deps } = makeDeps([{ name: 'no-exports', pkg: { dshClient: { platform: 'web' }, exports: './single.js' } }])
expect(() => createHostWebPluginRegistry(deps)).toThrow(/declares dshClient but exports no/)
})
it('skips duplicate loader entries for the same package name (first wins)', () => {
const { deps, entries } = makeDeps([{ name: 'dup-entry', pkg: webDecl() }])
const first = entries[0] as LoaderEntryView
entries.push({ options: { name: 'dup-entry' }, fiber: {}, disabled: false })
void first
const registry = createHostWebPluginRegistry(deps)
expect(registry.graph().entries.filter(r => r.id === 'dup-entry')).toHaveLength(1)
registry.dispose()
})
it('rejects a null conditional form and wraps a non-Error rescan throw', async () => {
// client: null → the object-form branch's null guard.
const nulled = makeDeps([{ name: 'null-client', pkg: { dshClient: { platform: 'web' }, exports: { './client': null } } }])
expect(() => createHostWebPluginRegistry(nulled.deps)).toThrow(/unsupported shape/)
// Non-Error rescan throw: resolvePkgJson throws a string; onError must get a wrapped Error.
const { deps, entries, errors, ctx } = makeDeps([{ name: 'ok-one', pkg: webDecl() }])
const registry = createHostWebPluginRegistry(deps)
entries.push({ options: { name: 'ghost-two' }, fiber: {}, disabled: false })
const original = deps.resolvePkgJson
deps.resolvePkgJson = (name) => {
if (name === 'ghost-two') throw 'string failure'
return original(name)
}
ctx.emit('internal/plugin', ctx.fiber)
await Promise.resolve()
expect(errors[0]).toBeInstanceOf(Error)
expect(String(errors[0])).toContain('string failure')
registry.dispose()
})
})
@@ -1,400 +0,0 @@
import { mkdtempSync, mkdirSync, writeFileSync } from 'node:fs'
import { Server as NetServer } from 'node:net'
import { tmpdir } from 'node:os'
import { join } from 'node:path'
import { afterEach, describe, expect, it, vi } from 'vitest'
import { startWebServer, type RunningWebServer } from '../src/index.ts'
/** dist fixture: index.html + one asset of each MIME class + a subdir. */
function makeDist(): { distIndex: string; distRoot: string } {
const distRoot = mkdtempSync(join(tmpdir(), 'dsh-webserver-'))
writeFileSync(join(distRoot, 'index.html'), '<html>INDEX</html>')
writeFileSync(join(distRoot, 'app.js'), 'console.log(1)')
writeFileSync(join(distRoot, 'app.css'), 'body{}')
writeFileSync(join(distRoot, 'logo.svg'), '<svg/>')
writeFileSync(join(distRoot, 'data.json'), '{}')
writeFileSync(join(distRoot, 'app.js.map'), '{}')
writeFileSync(join(distRoot, 'blob.bin'), 'BIN')
mkdirSync(join(distRoot, 'sub'))
writeFileSync(join(distRoot, 'sub', 'page.html'), '<html>SUB</html>')
return { distIndex: join(distRoot, 'index.html'), distRoot }
}
const echoingApi = {
fetch: async (input: RequestInfo | URL, init?: RequestInit): Promise<Response> => {
const req = input instanceof Request ? input : new Request(input, init)
if (req.url.endsWith('/api/echo')) {
return Response.json({ method: req.method, body: await req.text(), header: req.headers.get('x-probe') })
}
if (req.url.endsWith('/api/empty')) return new Response(null, { status: 204 })
if (req.url.endsWith('/api/big')) {
// Chunks far above any socket highWaterMark force res.write to return false.
const big = new Uint8Array(4 * 1024 * 1024).fill(65)
const stream = new ReadableStream<Uint8Array>({
start(controller) {
controller.enqueue(big)
controller.enqueue(big)
controller.close()
},
})
return new Response(stream, { headers: { 'content-type': 'application/octet-stream' } })
}
if (req.url.endsWith('/api/sse')) {
const encoder = new TextEncoder()
const stream = new ReadableStream<Uint8Array>({
start(controller) {
controller.enqueue(encoder.encode('data: one\n\n'))
controller.enqueue(encoder.encode('data: two\n\n'))
controller.close()
},
})
return new Response(stream, { headers: { 'content-type': 'text/event-stream' } })
}
if (req.url.endsWith('/api/throw-string')) {
// Non-Error rejection: the guard must wrap it for onError.
throw 'string failure'
}
if (req.url.endsWith('/api/explode-mid-stream')) {
// Headers go out with the first chunk, then the source errors: the
// guard's headersSent leg must destroy the socket, not writeHead again.
// The error is deferred a tick so the 200 + first chunk actually flush
// to the client before the teardown.
const stream = new ReadableStream<Uint8Array>({
start(controller) {
controller.enqueue(new TextEncoder().encode('data: first\n\n'))
setTimeout(() => { controller.error(new Error('stream exploded')) }, 20)
},
})
return new Response(stream, { headers: { 'content-type': 'text/event-stream' } })
}
if (req.url.endsWith('/api/abort-probe')) {
// Endless SSE that only ends when the request signal aborts.
const stream = new ReadableStream<Uint8Array>({
start(controller) {
req.signal.addEventListener('abort', () => {
try {
controller.close()
} catch { /* already closed by teardown: nothing else can reach this */ }
}, { once: true })
controller.enqueue(new TextEncoder().encode('data: open\n\n'))
},
})
return new Response(stream, { headers: { 'content-type': 'text/event-stream' } })
}
return new Response('nope', { status: 404 })
},
}
let server: RunningWebServer | undefined
afterEach(async () => {
await server?.close()
server = undefined
})
async function boot(onError: (err: Error) => void = () => undefined): Promise<string> {
const { distIndex } = makeDist()
server = await startWebServer({ host: '127.0.0.1', port: 0, distIndex, apiHandler: echoingApi }, onError)
return `http://127.0.0.1:${String(server.port)}`
}
describe('startWebServer', () => {
it('reports the listening port and closes idempotently', async () => {
const { distIndex } = makeDist()
server = await startWebServer({ host: '127.0.0.1', port: 0, distIndex, apiHandler: echoingApi }, () => undefined)
expect(server.port).toBeGreaterThan(0)
const first = server.close()
const second = server.close()
expect(second).toBe(first)
await first
server = undefined
})
it.each(['127.0.0.1', '0.0.0.0'])('forwards bind address %s without opening a socket', async (host) => {
const { distIndex } = makeDist()
const port = 3080
const listen = vi.spyOn(NetServer.prototype, 'listen').mockImplementation(function (
this: NetServer, ...args: unknown[]
): NetServer {
const callback = args.at(-1)
if (typeof callback !== 'function') throw new TypeError('listen callback missing')
queueMicrotask(callback as () => void)
return this
})
const address = vi.spyOn(NetServer.prototype, 'address').mockReturnValue({ address: host, family: 'IPv4', port })
try {
const inertServer = await startWebServer({ host, port, distIndex, apiHandler: echoingApi }, () => undefined)
expect(listen).toHaveBeenCalledWith(port, host, expect.any(Function))
await inertServer.close()
} finally {
address.mockRestore()
listen.mockRestore()
}
})
it('rejects when the port is already taken', async () => {
const { distIndex } = makeDist()
server = await startWebServer({ host: '127.0.0.1', port: 0, distIndex, apiHandler: echoingApi }, () => undefined)
const { port } = server
await expect(startWebServer({ host: '127.0.0.1', port, distIndex, apiHandler: echoingApi }, () => undefined))
.rejects.toMatchObject({ code: 'EADDRINUSE' })
})
})
describe.skipIf(process.platform === 'win32')('static serving', () => {
it('serves index at /, subpaths by MIME, octet-stream for unknown, SPA fallback on miss', async () => {
const base = await boot()
const index = await fetch(`${base}/`)
expect(index.status).toBe(200)
expect(index.headers.get('content-type')).toBe('text/html; charset=utf-8')
expect(await index.text()).toBe('<html>INDEX</html>')
expect((await fetch(`${base}/app.js`)).headers.get('content-type')).toBe('text/javascript; charset=utf-8')
expect((await fetch(`${base}/app.css`)).headers.get('content-type')).toBe('text/css; charset=utf-8')
expect((await fetch(`${base}/logo.svg`)).headers.get('content-type')).toBe('image/svg+xml')
expect((await fetch(`${base}/data.json`)).headers.get('content-type')).toBe('application/json')
expect((await fetch(`${base}/app.js.map`)).headers.get('content-type')).toBe('application/json')
expect((await fetch(`${base}/blob.bin`)).headers.get('content-type')).toBe('application/octet-stream')
expect(await (await fetch(`${base}/sub/page.html`)).text()).toBe('<html>SUB</html>')
const miss = await fetch(`${base}/routes/deep/link`)
expect(miss.status).toBe(200)
expect(await miss.text()).toBe('<html>INDEX</html>')
})
it('403s traversal outside the dist root and 405s non-GET/HEAD', async () => {
const base = await boot()
// %2e%2e would be dot-collapsed by WHATWG URL parsing on both ends; an
// encoded slash keeps the segment intact until the server's decodeURIComponent.
const traversal = await fetch(`${base}/..%2f..%2fetc%2fpasswd`)
expect(traversal.status).toBe(403)
const put = await fetch(`${base}/index.html`, { method: 'PUT', body: 'x' })
expect(put.status).toBe(405)
})
it('answers HEAD like GET (no 405)', async () => {
const base = await boot()
const head = await fetch(`${base}/`, { method: 'HEAD' })
expect(head.status).toBe(200)
})
})
describe.skipIf(process.platform === 'win32')('web plugin surfaces (boot injection + bundle endpoint + events channel)', () => {
const FETCH_ID = '@deepseek-ai/dsh-client-ui-layout'
const graphValue = {
rev: 'graphrev00001',
entries: [
{ id: '@deepseek-ai/dsh-client-connection', url: '/plugins/@deepseek-ai/dsh-client-connection/client.js?rev=eeee2222ffff', rev: 'eeee2222ffff', immediately: true },
{ id: FETCH_ID, url: `/plugins/${FETCH_ID}/client.js?rev=aaaa0000bbbb`, rev: 'aaaa0000bbbb', inject: [] },
],
}
/** Captures the server's onRebuilt subscription so tests can fire registry notifications by hand. */
interface RebuiltHarness {
notify: (id: string, rev: string) => void
unsubscribed: boolean
}
async function bootWithPlugins(harness?: RebuiltHarness): Promise<string> {
const { distIndex, distRoot } = makeDist()
writeFileSync(join(distRoot, 'bundle.js'), 'window.DSHClientProxy.loadPlugin({})')
const webPlugins = {
graph: () => graphValue,
clientPath: (id: string) => id === FETCH_ID ? join(distRoot, 'bundle.js') : undefined,
onRebuilt: (listener: (id: string, rev: string) => void) => {
if (harness !== undefined) harness.notify = listener
return () => {
if (harness !== undefined) harness.unsubscribed = true
}
},
}
server = await startWebServer(
{ host: '127.0.0.1', port: 0, distIndex, apiHandler: echoingApi, webPlugins }, () => undefined,
)
return `http://127.0.0.1:${String(server.port)}`
}
it('injects the window.__DSH_BOOT__ graph into / and SPA fallbacks; asset requests stay verbatim', async () => {
const base = await bootWithPlugins()
const index = await (await fetch(`${base}/`)).text()
expect(index).toContain('window.__DSH_BOOT__')
const manifest = /window\.__DSH_BOOT__ = (.*?)<\/script>/.exec(index)?.[1]
expect(JSON.parse(manifest ?? '')).toEqual(graphValue)
const fallback = await (await fetch(`${base}/routes/deep/link`)).text()
expect(fallback).toContain('window.__DSH_BOOT__')
const direct = await (await fetch(`${base}/index.html`)).text()
expect(direct).toContain('window.__DSH_BOOT__')
expect(await (await fetch(`${base}/app.js`)).text()).toBe('console.log(1)')
})
it('serves registered client bundles with no-cache (rev query ignored) and 404s unknown ids (no SPA fallback)', async () => {
const base = await bootWithPlugins()
const bundle = await fetch(`${base}/plugins/${FETCH_ID}/client.js?rev=whatever`)
expect(bundle.status).toBe(200)
expect(bundle.headers.get('content-type')).toBe('text/javascript; charset=utf-8')
expect(bundle.headers.get('cache-control')).toBe('no-cache')
expect(await bundle.text()).toContain('DSHClientProxy')
expect((await fetch(`${base}/plugins/unknown/client.js`)).status).toBe(404)
})
it('404s a registered id whose bundle file is unreadable (unbuilt dist must fail loud, not fall back to HTML)', async () => {
const { distIndex } = makeDist()
const webPlugins = {
graph: () => graphValue,
clientPath: () => '/nonexistent/lib/client.js',
onRebuilt: () => () => undefined,
}
server = await startWebServer(
{ host: '127.0.0.1', port: 0, distIndex, apiHandler: echoingApi, webPlugins }, () => undefined,
)
const res = await fetch(`http://127.0.0.1:${String(server.port)}/plugins/${FETCH_ID}/client.js`)
expect(res.status).toBe(404)
})
it('keeps all plugin surfaces off without the webPlugins option', async () => {
const base = await boot()
expect(await (await fetch(`${base}/`)).text()).toBe('<html>INDEX</html>')
// No plugin routes: fall through to static SPA fallback semantics.
const res = await fetch(`${base}/plugins/x/client.js`)
expect(res.status).toBe(200)
expect(await res.text()).toBe('<html>INDEX</html>')
const events = await fetch(`${base}/plugins/events`)
expect(await events.text()).toBe('<html>INDEX</html>')
})
it('GET /plugins/events opens SSE with the current graph frame; a registry rebuild notification broadcasts', async () => {
const harness: RebuiltHarness = { notify: () => { throw new Error('onRebuilt never subscribed') }, unsubscribed: false }
const base = await bootWithPlugins(harness)
const events = await fetch(`${base}/plugins/events`)
expect(events.status).toBe(200)
expect(events.headers.get('content-type')).toBe('text/event-stream')
const reader = events.body?.getReader()
const decoder = new TextDecoder()
let buffer = ''
async function readUntil(marker: string): Promise<void> {
while (!buffer.includes(marker)) {
const chunk = await reader?.read()
if (chunk?.done !== false) throw new Error('SSE stream ended early')
buffer += decoder.decode(chunk.value, { stream: true })
}
}
await readUntil('"type":"graph"')
expect(buffer).toContain(': connected')
const graphLine = /data: (.*)\n\n/.exec(buffer)?.[1]
expect(JSON.parse(graphLine ?? '')).toEqual({ type: 'graph', graph: graphValue })
// The registry's bundle watch observed a rebuild: the server relays it as an SSE frame.
harness.notify(FETCH_ID, 'cccc1111dddd')
await readUntil('"type":"rebuilt"')
expect(buffer).toContain(JSON.stringify({ type: 'rebuilt', id: FETCH_ID, rev: 'cccc1111dddd' }))
await reader?.cancel()
// Shutdown unsubscribes the relay (no broadcast into a closed channel).
await server?.close()
server = undefined
expect(harness.unsubscribed).toBe(true)
})
})
describe('request-handling guard (one bad request must not kill the process)', () => {
it('400s malformed %-escapes, reports to onError, and stays alive', async () => {
const errors: Error[] = []
const base = await boot(err => errors.push(err))
for (const path of ['/%', '/%c0', '/%zz%']) {
expect((await fetch(`${base}${path}`)).status).toBe(400)
}
expect(errors.length).toBe(3)
expect(errors[0]?.name).toBe('URIError')
// The barrage left the server serving.
expect((await fetch(`${base}/`)).status).toBe(200)
})
it('wraps a non-Error throw for onError and still answers 400', async () => {
const errors: Error[] = []
const base = await boot(err => errors.push(err))
expect((await fetch(`${base}/api/throw-string`, { method: 'POST' })).status).toBe(400)
expect(errors[0]).toBeInstanceOf(Error)
expect(errors[0]?.message).toBe('string failure')
})
it('destroys the socket when the failure lands after headers went out', async () => {
const errors: Error[] = []
const base = await boot(err => errors.push(err))
const response = await fetch(`${base}/api/explode-mid-stream`)
expect(response.status).toBe(200) // headers made it out before the explosion
await expect(response.text()).rejects.toThrow() // then the socket is torn down
expect(errors.length).toBe(1)
expect((await fetch(`${base}/`)).status).toBe(200)
})
})
describe('/api bridge', () => {
it('forwards method, headers, and body; relays status and body back', async () => {
const base = await boot()
const response = await fetch(`${base}/api/echo`, {
method: 'POST',
headers: { 'content-type': 'application/json', 'x-probe': 'p1' },
body: JSON.stringify({ n: 1 }),
})
expect(response.status).toBe(200)
expect(await response.json()).toEqual({ method: 'POST', body: '{"n":1}', header: 'p1' })
})
it('relays a bodyless response', async () => {
const base = await boot()
const response = await fetch(`${base}/api/empty`, { method: 'POST' })
expect(response.status).toBe(204)
expect(await response.text()).toBe('')
})
it('streams SSE frames through chunk by chunk', async () => {
const base = await boot()
const response = await fetch(`${base}/api/sse`)
expect(response.headers.get('content-type')).toBe('text/event-stream')
expect(await response.text()).toBe('data: one\n\ndata: two\n\n')
})
it('waits for drain when a streamed chunk overfills the socket buffer', async () => {
// 4 MiB chunks dwarf the socket highWaterMark, so res.write returns false
// and the bridge parks on 'drain'; reading the body to completion proves
// the loop resumed instead of dropping the remainder.
const base = await boot()
const response = await fetch(`${base}/api/big`)
const body = new Uint8Array(await response.arrayBuffer())
expect(body.length).toBe(8 * 1024 * 1024)
expect(body[0]).toBe(65)
expect(body[body.length - 1]).toBe(65)
})
it('releases a drain wait when the client disconnects mid-chunk', async () => {
// The 'close' leg of the drain race: abort while the socket buffer is
// still full so the parked write wakes via 'close', not 'drain'.
const base = await boot()
const ac = new AbortController()
const response = await fetch(`${base}/api/big`, { signal: ac.signal })
const reader = response.body?.getReader()
const first = await reader?.read()
expect(first?.value?.length).toBeGreaterThan(0)
ac.abort()
// afterEach close() completing is the leak assertion, same as abort-probe.
await new Promise((resolve) => { setTimeout(resolve, 50) })
})
it('aborts the bridged request when the client disconnects mid-SSE', async () => {
const base = await boot()
const ac = new AbortController()
const response = await fetch(`${base}/api/abort-probe`, { signal: ac.signal })
const reader = response.body?.getReader()
expect(reader).toBeDefined()
const first = await reader?.read()
expect(new TextDecoder().decode(first?.value)).toContain('open')
ac.abort()
// server-side abort propagation has no client-observable handshake beyond
// the closed connection; close() would hang on a leaked live SSE socket,
// so afterEach completing IS the assertion that the bridge released it.
await new Promise((resolve) => { setTimeout(resolve, 50) })
})
})