feat(FN-2709): migrate Hermes runtime plugin to pi-ai streaming client

- Replace Hermes pi module integration with pi-ai session streaming and updated runtime adapter contracts
- Remove legacy engine guard scaffolding and add hermes-stream-client coverage for streaming behavior
- Rewrite plugin and engine e2e tests to align with the new runtime flow and regenerate dist artifacts
- Update Hermes runtime README and package metadata to document pi-ai execution expectations
This commit is contained in:
Fusion
2026-04-27 11:32:05 -07:00
committed by gsxdsm
parent 669cba935d
commit 3d282819e1
33 changed files with 1010 additions and 635 deletions

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# Hermes Runtime Plugin
Provides an executable Hermes runtime plugin for Fusion. This package enables runtime registration, discovery, and session execution so agents configured with `runtimeConfig.runtimeHint: "hermes"` can run through the standard runtime adapter contract.
Hermes is a **raw-model runtime** plugin for Fusion. It creates and manages LLM sessions directly through [`@mariozechner/pi-ai`](https://www.npmjs.com/package/@mariozechner/pi-ai), without using Fusion's internal Pi coding-agent pipeline.
## Overview
## What it does
This plugin follows the runtime adapter pattern used by other executable plugin runtimes:
- Resolves provider/model settings from plugin settings, environment variables, and defaults
- Creates in-memory streaming sessions with `streamSimple(...)`
- Maintains conversation history (`messages`) inside the plugin session
- Streams text/thinking/tool-call deltas through runtime callbacks
- Exposes model description as `<provider>/<modelId>`
- Registers Hermes runtime metadata for resolver discovery
- Creates executable runtime sessions via `createFnAgent`
- Delegates prompt execution through `promptWithFallback`
- Exposes model descriptions through `describeModel`
- Supports best-effort session disposal via `dispose()`
## How it differs from the default Pi runtime
## Installation
| Runtime | Behavior |
| --- | --- |
| Default Pi runtime (`pi`) | Full coding-agent flow (`createFnAgent`, tool execution, skill/session manager integration) |
| Hermes runtime (`hermes`) | Direct pi-ai model streaming (no coding-agent tool execution pipeline) |
### Option 1: Copy to plugins directory
Hermes is intentionally lightweight: it does not execute tools or perform filesystem workflows like the coding agent.
```bash
cp -r fusion-plugin-hermes-runtime ~/.fusion/plugins/
```
## Configuration
### Option 2: Install via CLI
Hermes resolves settings in this order:
```bash
fn plugin install ./plugins/fusion-plugin-hermes-runtime
```
1. Plugin settings (`ctx.settings`)
2. Environment variables
3. Built-in defaults
## Runtime Metadata
- **Plugin ID:** `fusion-plugin-hermes-runtime`
- **Package name:** `@fusion-plugin-examples/hermes-runtime`
- **Runtime ID:** `hermes`
- **Runtime name:** `Hermes Runtime`
- **Version:** `0.1.0`
- **Description:** Hermes-backed AI session using the user's configured pi provider and model
## Agent Configuration
Configure an agent to target Hermes via `runtimeConfig.runtimeHint`:
### Plugin settings
```json
{
"name": "Hermes Executor",
"role": "executor",
"runtimeConfig": {
"runtimeHint": "hermes"
}
"provider": "anthropic",
"modelId": "claude-sonnet-4-5",
"apiKey": "...optional...",
"thinkingLevel": "medium"
}
```
## Local Development
### Environment variable fallbacks
- `HERMES_PROVIDER`
- `HERMES_MODEL_ID`
- `HERMES_API_KEY`
- `HERMES_THINKING_LEVEL`
### Defaults
- `provider`: `anthropic`
- `modelId`: `claude-sonnet-4-5`
- `apiKey`: `undefined`
- `thinkingLevel`: `undefined`
## Runtime contract notes
Hermes accepts the standard `AgentRuntimeOptions` shape for compatibility, but these Pi-specific fields are **silently ignored**:
- `cwd`
- `tools`
- `skills`
- `customTools`
- `sessionManager`
- `skillSelection`
The runtime returns `sessionFile: undefined` because Hermes sessions are in-memory.
## Metadata
- **Plugin ID:** `fusion-plugin-hermes-runtime`
- **Runtime ID:** `hermes`
- **Runtime name:** `Hermes Runtime`
- **Package:** `@fusion-plugin-examples/hermes-runtime`
## Development
```bash
# Run plugin tests
pnpm --filter @fusion-plugin-examples/hermes-runtime test
# Build plugin output to dist/
pnpm --filter @fusion-plugin-examples/hermes-runtime build
```

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import { describe, it, expect, vi, beforeEach, afterEach } from "vitest";
const { mockCreateFnAgent, mockPromptWithFallback, mockDescribeModel } = vi.hoisted(() => ({
mockCreateFnAgent: vi.fn(),
mockPromptWithFallback: vi.fn(),
mockDescribeModel: vi.fn().mockReturnValue("unknown model"),
import { beforeEach, describe, expect, it, vi } from "vitest";
const { mockResolveModelConfig } = vi.hoisted(() => ({
mockResolveModelConfig: vi.fn().mockReturnValue({
provider: "anthropic",
modelId: "claude-sonnet-4-5",
apiKey: undefined,
thinkingLevel: undefined,
}),
}));
vi.mock("../pi-module.js", () => ({
createFnAgent: mockCreateFnAgent,
promptWithFallback: mockPromptWithFallback,
describeModel: mockDescribeModel,
resolveModelConfig: mockResolveModelConfig,
}));
import plugin, { hermesRuntimeMetadata, hermesRuntimeFactory, HERMES_RUNTIME_ID } from "../index.js";
import { HermesRuntimeAdapter } from "../runtime-adapter.js";
function createMockContext(overrides = {}) {
function createMockContext(settings = {}) {
return {
pluginId: "fusion-plugin-hermes-runtime",
settings: {},
settings,
logger: {
info: vi.fn(),
warn: vi.fn(),
@@ -25,69 +26,60 @@ function createMockContext(overrides = {}) {
taskStore: {
getTask: vi.fn(),
},
...overrides,
};
}
describe("hermes-runtime plugin", () => {
beforeEach(() => {
vi.clearAllMocks();
});
afterEach(() => {
vi.restoreAllMocks();
it("has expected manifest identity", () => {
expect(plugin.manifest.id).toBe("fusion-plugin-hermes-runtime");
expect(plugin.manifest.name).toBe("Hermes Runtime Plugin");
expect(plugin.manifest.version).toBe("0.1.0");
expect(plugin.state).toBe("installed");
});
describe("plugin manifest identity", () => {
it("should have correct manifest fields", () => {
expect(plugin.manifest.id).toBe("fusion-plugin-hermes-runtime");
expect(plugin.manifest.name).toBe("Hermes Runtime Plugin");
expect(plugin.manifest.version).toBe("0.1.0");
expect(plugin.manifest.description).toContain("Hermes");
expect(plugin.manifest.author).toBe("Fusion Team");
expect(plugin.state).toBe("installed");
it("registers runtime metadata and exports matching constants", () => {
expect(HERMES_RUNTIME_ID).toBe("hermes");
expect(plugin.runtime?.metadata.runtimeId).toBe("hermes");
expect(plugin.runtime?.metadata.name).toBe("Hermes Runtime");
expect(plugin.runtime?.metadata.description).toContain("pi-ai direct streaming");
expect(plugin.manifest.runtime).toEqual(hermesRuntimeMetadata);
});
it("onLoad resolves model config and logs selected provider/model without api key", async () => {
const ctx = createMockContext({ provider: "openai", modelId: "gpt-5", apiKey: "secret" });
mockResolveModelConfig.mockReturnValue({
provider: "openai",
modelId: "gpt-5",
apiKey: "secret",
thinkingLevel: "medium",
});
await plugin.hooks.onLoad?.(ctx);
expect(mockResolveModelConfig).toHaveBeenCalledWith(ctx.settings);
expect(ctx.logger.info).toHaveBeenCalledWith("Hermes Runtime Plugin loaded — using openai/gpt-5");
expect(ctx.logger.info.mock.calls[0][0]).not.toContain("secret");
expect(ctx.emitEvent).toHaveBeenCalledWith("hermes-runtime:loaded", {
runtimeId: "hermes",
version: "0.1.0",
});
});
describe("runtime registration", () => {
it("should register hermes runtime metadata", () => {
expect(plugin.runtime).toBeDefined();
expect(plugin.runtime?.metadata.runtimeId).toBe(HERMES_RUNTIME_ID);
expect(plugin.runtime?.metadata.name).toBe("Hermes Runtime");
expect(plugin.runtime?.metadata.description).toContain("Hermes-backed AI session");
expect(plugin.runtime?.metadata.version).toBe("0.1.0");
it("runtime factory resolves settings and returns HermesRuntimeAdapter", async () => {
const ctx = createMockContext({ provider: "openai", modelId: "gpt-5" });
mockResolveModelConfig.mockReturnValue({
provider: "openai",
modelId: "gpt-5",
apiKey: "api-key",
thinkingLevel: "high",
});
it("should have consistent runtime metadata between export and manifest", () => {
expect(plugin.manifest.runtime).toEqual(hermesRuntimeMetadata);
expect(plugin.runtime?.metadata).toEqual(hermesRuntimeMetadata);
});
});
describe("hooks", () => {
it("onLoad should log startup message and emit loaded event", async () => {
const ctx = createMockContext();
await plugin.hooks.onLoad?.(ctx);
expect(ctx.logger.info).toHaveBeenCalledWith("Hermes Runtime Plugin loaded");
expect(ctx.emitEvent).toHaveBeenCalledWith("hermes-runtime:loaded", {
runtimeId: HERMES_RUNTIME_ID,
version: "0.1.0",
});
});
it("onUnload should not throw", () => {
expect(() => plugin.hooks.onUnload?.()).not.toThrow();
});
});
describe("runtime factory behavior", () => {
it("should export runtime constants", () => {
expect(HERMES_RUNTIME_ID).toBe("hermes");
expect(hermesRuntimeMetadata.runtimeId).toBe("hermes");
expect(typeof hermesRuntimeFactory).toBe("function");
});
it("runtime factory should return executable runtime adapter", async () => {
const runtime = (await hermesRuntimeFactory(createMockContext()));
expect(runtime).toBeInstanceOf(HermesRuntimeAdapter);
expect(runtime.id).toBe("hermes");
expect(runtime.name).toBe("Hermes Runtime");
expect(runtime).not.toHaveProperty("status");
expect(runtime).not.toHaveProperty("execute");
});
it("factory creation should not throw", async () => {
await expect(hermesRuntimeFactory(createMockContext())).resolves.toBeInstanceOf(HermesRuntimeAdapter);
const runtime = (await hermesRuntimeFactory(ctx));
expect(mockResolveModelConfig).toHaveBeenCalledWith(ctx.settings);
expect(runtime).toBeInstanceOf(HermesRuntimeAdapter);
expect(runtime.id).toBe("hermes");
expect(runtime.name).toBe("Hermes Runtime");
expect(runtime.config).toEqual({
provider: "openai",
modelId: "gpt-5",
apiKey: "api-key",
thinkingLevel: "high",
});
});
});

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@@ -1 +1 @@
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import { describe, it, expect, vi, beforeEach, afterEach } from "vitest";
import { describe, it, expect, vi, beforeEach } from "vitest";
import { HermesRuntimeAdapter } from "../runtime-adapter.js";
const { mockCreateFnAgent, mockPromptWithFallback, mockDescribeModel } = vi.hoisted(() => ({
mockCreateFnAgent: vi.fn(),
mockPromptWithFallback: vi.fn(),
mockDescribeModel: vi.fn(),
const { mockCreateStreamSession, mockStreamPrompt, mockDescribeStreamModel, } = vi.hoisted(() => ({
mockCreateStreamSession: vi.fn(),
mockStreamPrompt: vi.fn(),
mockDescribeStreamModel: vi.fn(),
}));
vi.mock("../pi-module.js", () => ({
createFnAgent: mockCreateFnAgent,
promptWithFallback: mockPromptWithFallback,
describeModel: mockDescribeModel,
createStreamSession: mockCreateStreamSession,
streamPrompt: mockStreamPrompt,
describeStreamModel: mockDescribeStreamModel,
}));
describe("HermesRuntimeAdapter", () => {
let adapter;
beforeEach(() => {
vi.clearAllMocks();
mockDescribeModel.mockReturnValue("mock/anthropic-claude");
adapter = new HermesRuntimeAdapter();
});
afterEach(() => {
vi.restoreAllMocks();
});
it("has stable runtime identity", () => {
const adapter = new HermesRuntimeAdapter({ provider: "anthropic", modelId: "claude-sonnet-4-5" });
expect(adapter.id).toBe("hermes");
expect(adapter.name).toBe("Hermes Runtime");
});
it("delegates createSession to createFnAgent with mapped options", async () => {
const mockSession = { dispose: vi.fn() };
mockCreateFnAgent.mockResolvedValue({ session: mockSession, sessionFile: "/tmp/session.json" });
it("createSession passes model config/systemPrompt/callbacks and returns undefined sessionFile", async () => {
const adapter = new HermesRuntimeAdapter({
provider: "openai",
modelId: "gpt-5",
apiKey: "secret",
thinkingLevel: "high",
});
const session = { messages: [], dispose: vi.fn() };
mockCreateStreamSession.mockReturnValue(session);
const onText = vi.fn();
const onThinking = vi.fn();
const onToolStart = vi.fn();
const onToolEnd = vi.fn();
const result = await adapter.createSession({
cwd: "/project",
systemPrompt: "You are helpful",
defaultProvider: "anthropic",
defaultModelId: "claude-sonnet-4-5",
fallbackProvider: "openai",
fallbackModelId: "gpt-4o",
cwd: "/tmp/project",
systemPrompt: "You are Hermes",
tools: "coding",
customTools: [{ name: "ignored" }],
sessionManager: { foo: "bar" },
skillSelection: { all: true },
skills: ["bash"],
onText,
onThinking,
onToolStart,
onToolEnd,
});
expect(mockCreateFnAgent).toHaveBeenCalledWith({
cwd: "/project",
systemPrompt: "You are helpful",
tools: undefined,
customTools: undefined,
onText: undefined,
onThinking: undefined,
onToolStart: undefined,
onToolEnd: undefined,
defaultProvider: "anthropic",
defaultModelId: "claude-sonnet-4-5",
fallbackProvider: "openai",
fallbackModelId: "gpt-4o",
defaultThinkingLevel: undefined,
sessionManager: undefined,
skillSelection: undefined,
skills: ["bash"],
expect(mockCreateStreamSession).toHaveBeenCalledWith({
provider: "openai",
modelId: "gpt-5",
apiKey: "secret",
thinkingLevel: "high",
systemPrompt: "You are Hermes",
callbacks: {
onText,
onThinking,
onToolStart,
onToolEnd,
},
});
expect(result.session).toBe(mockSession);
expect(result.sessionFile).toBe("/tmp/session.json");
expect(result).toEqual({ session, sessionFile: undefined });
expect(JSON.stringify(mockCreateStreamSession.mock.calls[0][0])).not.toContain("/tmp/project");
expect(JSON.stringify(mockCreateStreamSession.mock.calls[0][0])).not.toContain("coding");
});
it("delegates promptWithFallback to pi seam", async () => {
const session = { id: "s-1" };
mockPromptWithFallback.mockResolvedValue(undefined);
await adapter.promptWithFallback(session, "Hello", { images: [] });
expect(mockPromptWithFallback).toHaveBeenCalledWith(session, "Hello", { images: [] });
it("promptWithFallback appends user message then delegates to streamPrompt", async () => {
const adapter = new HermesRuntimeAdapter({ provider: "anthropic", modelId: "claude-sonnet-4-5" });
const session = { messages: [], dispose: vi.fn() };
await adapter.promptWithFallback(session, "Hello from Hermes");
expect(session.messages).toEqual([{ role: "user", content: "Hello from Hermes" }]);
expect(mockStreamPrompt).toHaveBeenCalledWith(session, {
role: "user",
content: "Hello from Hermes",
});
});
it("delegates describeModel to pi seam", () => {
const session = { id: "s-2" };
mockDescribeModel.mockReturnValue("anthropic/claude-sonnet-4-5");
const result = adapter.describeModel(session);
expect(mockDescribeModel).toHaveBeenCalledWith(session);
expect(result).toBe("anthropic/claude-sonnet-4-5");
it("describeModel delegates to describeStreamModel", () => {
const adapter = new HermesRuntimeAdapter({ provider: "anthropic", modelId: "claude-sonnet-4-5" });
const session = { messages: [], dispose: vi.fn() };
mockDescribeStreamModel.mockReturnValue("anthropic/claude-sonnet-4-5");
expect(adapter.describeModel(session)).toBe("anthropic/claude-sonnet-4-5");
expect(mockDescribeStreamModel).toHaveBeenCalledWith(session);
});
it("dispose calls session.dispose when present and no-ops otherwise", async () => {
const disposeMock = vi.fn().mockResolvedValue(undefined);
await adapter.dispose({ dispose: disposeMock });
await expect(adapter.dispose({ id: "no-dispose" })).resolves.toBeUndefined();
expect(disposeMock).toHaveBeenCalledTimes(1);
it("dispose is a no-op when missing and calls dispose when present", async () => {
const adapter = new HermesRuntimeAdapter({ provider: "anthropic", modelId: "claude-sonnet-4-5" });
const dispose = vi.fn();
await expect(adapter.dispose({ messages: [], dispose })).resolves.toBeUndefined();
await expect(adapter.dispose({ messages: [] })).resolves.toBeUndefined();
expect(dispose).toHaveBeenCalledTimes(1);
});
});
//# sourceMappingURL=runtime-adapter.test.js.map

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@@ -1 +1 @@
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@@ -1 +1 @@
{"version":3,"file":"index.d.ts","sourceRoot":"","sources":["../src/index.ts"],"names":[],"mappings":"AAAA;;;;;GAKG;AAIH,OAAO,KAAK,EACV,YAAY,EACZ,oBAAoB,EACpB,6BAA6B,EAC9B,MAAM,oBAAoB,CAAC;AAI5B,QAAA,MAAM,iBAAiB,WAAW,CAAC;AAGnC,QAAA,MAAM,qBAAqB,EAAE,6BAK5B,CAAC;AAIF,QAAA,MAAM,oBAAoB,EAAE,oBAE3B,CAAC;AAIF,QAAA,MAAM,MAAM,EAAE,YA2BZ,CAAC;AAEH,eAAe,MAAM,CAAC;AAItB,OAAO,EAAE,qBAAqB,EAAE,oBAAoB,EAAE,iBAAiB,EAAE,CAAC"}
{"version":3,"file":"index.d.ts","sourceRoot":"","sources":["../src/index.ts"],"names":[],"mappings":"AAAA;;;;;GAKG;AAKH,OAAO,KAAK,EACV,YAAY,EACZ,oBAAoB,EACpB,6BAA6B,EAC9B,MAAM,oBAAoB,CAAC;AAI5B,QAAA,MAAM,iBAAiB,WAAW,CAAC;AAGnC,QAAA,MAAM,qBAAqB,EAAE,6BAK5B,CAAC;AAIF,QAAA,MAAM,oBAAoB,EAAE,oBAS3B,CAAC;AAIF,QAAA,MAAM,MAAM,EAAE,YA4BZ,CAAC;AAEH,eAAe,MAAM,CAAC;AAItB,OAAO,EAAE,qBAAqB,EAAE,oBAAoB,EAAE,iBAAiB,EAAE,CAAC"}

View File

@@ -5,6 +5,7 @@
* discovery and session execution pipeline.
*/
import { definePlugin } from "@fusion/plugin-sdk";
import { resolveModelConfig } from "./pi-module.js";
import { HermesRuntimeAdapter } from "./runtime-adapter.js";
// ── Hermes Runtime Metadata ───────────────────────────────────────────────────
const HERMES_RUNTIME_ID = "hermes";
@@ -12,12 +13,18 @@ const HERMES_RUNTIME_VERSION = "0.1.0";
const hermesRuntimeMetadata = {
runtimeId: HERMES_RUNTIME_ID,
name: "Hermes Runtime",
description: "Hermes-backed AI session using the user's configured pi provider and model",
description: "Hermes raw-model runtime using pi-ai direct streaming",
version: HERMES_RUNTIME_VERSION,
};
// ── Hermes Runtime Factory ────────────────────────────────────────────────────
const hermesRuntimeFactory = async () => {
return new HermesRuntimeAdapter();
const hermesRuntimeFactory = async (ctx) => {
const config = resolveModelConfig(ctx.settings);
return new HermesRuntimeAdapter({
provider: config.provider,
modelId: config.modelId,
apiKey: config.apiKey,
thinkingLevel: config.thinkingLevel,
});
};
// ── Plugin Definition ─────────────────────────────────────────────────────────
const plugin = definePlugin({
@@ -33,7 +40,8 @@ const plugin = definePlugin({
state: "installed",
hooks: {
onLoad: (ctx) => {
ctx.logger.info("Hermes Runtime Plugin loaded");
const config = resolveModelConfig(ctx.settings);
ctx.logger.info(`Hermes Runtime Plugin loaded — using ${config.provider}/${config.modelId}`);
ctx.emitEvent("hermes-runtime:loaded", {
runtimeId: HERMES_RUNTIME_ID,
version: HERMES_RUNTIME_VERSION,

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@@ -1 +1 @@
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{"version":3,"file":"index.js","sourceRoot":"","sources":["../src/index.ts"],"names":[],"mappings":"AAAA;;;;;GAKG;AAEH,OAAO,EAAE,YAAY,EAAE,MAAM,oBAAoB,CAAC;AAClD,OAAO,EAAE,kBAAkB,EAAE,MAAM,gBAAgB,CAAC;AACpD,OAAO,EAAE,oBAAoB,EAAE,MAAM,sBAAsB,CAAC;AAO5D,iFAAiF;AAEjF,MAAM,iBAAiB,GAAG,QAAQ,CAAC;AACnC,MAAM,sBAAsB,GAAG,OAAO,CAAC;AAEvC,MAAM,qBAAqB,GAAkC;IAC3D,SAAS,EAAE,iBAAiB;IAC5B,IAAI,EAAE,gBAAgB;IACtB,WAAW,EAAE,uDAAuD;IACpE,OAAO,EAAE,sBAAsB;CAChC,CAAC;AAEF,iFAAiF;AAEjF,MAAM,oBAAoB,GAAyB,KAAK,EAAE,GAAG,EAAE,EAAE;IAC/D,MAAM,MAAM,GAAG,kBAAkB,CAAC,GAAG,CAAC,QAAQ,CAAC,CAAC;IAEhD,OAAO,IAAI,oBAAoB,CAAC;QAC9B,QAAQ,EAAE,MAAM,CAAC,QAAQ;QACzB,OAAO,EAAE,MAAM,CAAC,OAAO;QACvB,MAAM,EAAE,MAAM,CAAC,MAAM;QACrB,aAAa,EAAE,MAAM,CAAC,aAAa;KACpC,CAAC,CAAC;AACL,CAAC,CAAC;AAEF,iFAAiF;AAEjF,MAAM,MAAM,GAAiB,YAAY,CAAC;IACxC,QAAQ,EAAE;QACR,EAAE,EAAE,8BAA8B;QAClC,IAAI,EAAE,uBAAuB;QAC7B,OAAO,EAAE,OAAO;QAChB,WAAW,EAAE,wFAAwF;QACrG,MAAM,EAAE,aAAa;QACrB,QAAQ,EAAE,kCAAkC;QAC5C,OAAO,EAAE,qBAAqB;KAC/B;IACD,KAAK,EAAE,WAAW;IAClB,KAAK,EAAE;QACL,MAAM,EAAE,CAAC,GAAG,EAAE,EAAE;YACd,MAAM,MAAM,GAAG,kBAAkB,CAAC,GAAG,CAAC,QAAQ,CAAC,CAAC;YAChD,GAAG,CAAC,MAAM,CAAC,IAAI,CAAC,wCAAwC,MAAM,CAAC,QAAQ,IAAI,MAAM,CAAC,OAAO,EAAE,CAAC,CAAC;YAC7F,GAAG,CAAC,SAAS,CAAC,uBAAuB,EAAE;gBACrC,SAAS,EAAE,iBAAiB;gBAC5B,OAAO,EAAE,sBAAsB;aAChC,CAAC,CAAC;QACL,CAAC;QACD,QAAQ,EAAE,GAAG,EAAE;YACb,qCAAqC;QACvC,CAAC;KACF;IACD,OAAO,EAAE;QACP,QAAQ,EAAE,qBAAqB;QAC/B,OAAO,EAAE,oBAAoB;KAC9B;CACF,CAAC,CAAC;AAEH,eAAe,MAAM,CAAC;AAEtB,iFAAiF;AAEjF,OAAO,EAAE,qBAAqB,EAAE,oBAAoB,EAAE,iBAAiB,EAAE,CAAC"}

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@@ -1,29 +1,14 @@
export interface PiAgentSession {
dispose?: () => Promise<void> | void;
}
export interface PiAgentResult {
session: PiAgentSession;
sessionFile?: string;
}
export interface PiAgentOptions {
cwd: string;
import { type Message } from "@mariozechner/pi-ai";
import type { HermesCallbacks, HermesStreamSession, ResolvedModelConfig } from "./types.js";
export declare function resolveModelConfig(settings?: Record<string, unknown>): ResolvedModelConfig;
export declare function createStreamSession(options: {
provider: string;
modelId: string;
apiKey?: string;
thinkingLevel?: string;
systemPrompt: string;
tools?: "coding" | "readonly";
customTools?: unknown;
onText?: (text: string) => void;
onThinking?: (text: string) => void;
onToolStart?: (toolName: string, args?: Record<string, unknown>) => void;
onToolEnd?: (toolName: string, isError: boolean, result?: unknown) => void;
defaultProvider?: string;
defaultModelId?: string;
fallbackProvider?: string;
fallbackModelId?: string;
defaultThinkingLevel?: string;
sessionManager?: unknown;
skillSelection?: unknown;
skills?: string[];
}
export declare const createFnAgent: (options: PiAgentOptions) => Promise<PiAgentResult>;
export declare const promptWithFallback: (session: PiAgentSession, prompt: string, options?: unknown) => Promise<void>;
export declare const describeModel: (session: PiAgentSession) => string;
callbacks?: HermesCallbacks;
}): HermesStreamSession;
export declare function streamPrompt(session: HermesStreamSession, _userMessage: Message): Promise<void>;
export declare function describeStreamModel(session: HermesStreamSession): string;
//# sourceMappingURL=pi-module.d.ts.map

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@@ -1 +1 @@
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@@ -1,13 +1,85 @@
/**
* Pi Module Seam
*
* Provides a mockable import path for pi functions used by the HermesRuntimeAdapter.
* Tests intercept this module via `vi.mock("../pi-module.js", ...)`. The runtime
* implementations come from @fusion/engine; the local types provide a loose
* surface so the adapter doesn't have to depend on @fusion/engine's full types.
*/
import { createFnAgent as _createFnAgent, promptWithFallback as _promptWithFallback, describeModel as _describeModel, } from "@fusion/engine";
export const createFnAgent = _createFnAgent;
export const promptWithFallback = _promptWithFallback;
export const describeModel = _describeModel;
import { randomUUID } from "node:crypto";
import { getModel, streamSimple, } from "@mariozechner/pi-ai";
const DEFAULT_PROVIDER = "anthropic";
const DEFAULT_MODEL_ID = "claude-sonnet-4-5";
function resolveStringSetting(value) {
return typeof value === "string" && value.trim().length > 0 ? value.trim() : undefined;
}
export function resolveModelConfig(settings) {
const provider = resolveStringSetting(settings?.provider) ?? resolveStringSetting(process.env.HERMES_PROVIDER) ?? DEFAULT_PROVIDER;
const modelId = resolveStringSetting(settings?.modelId) ?? resolveStringSetting(process.env.HERMES_MODEL_ID) ?? DEFAULT_MODEL_ID;
const apiKey = resolveStringSetting(settings?.apiKey) ?? resolveStringSetting(process.env.HERMES_API_KEY);
const thinkingLevel = resolveStringSetting(settings?.thinkingLevel) ?? resolveStringSetting(process.env.HERMES_THINKING_LEVEL) ?? undefined;
return { provider, modelId, apiKey, thinkingLevel };
}
export function createStreamSession(options) {
const model = getModel(options.provider, options.modelId);
return {
model,
systemPrompt: options.systemPrompt,
messages: [],
apiKey: options.apiKey,
thinkingLevel: options.thinkingLevel,
sessionId: randomUUID(),
lastModelDescription: `${model.provider}/${model.id}`,
callbacks: options.callbacks ?? {},
usage: undefined,
dispose: () => undefined,
};
}
export async function streamPrompt(session, _userMessage) {
const context = {
systemPrompt: session.systemPrompt,
messages: [...session.messages],
};
const options = {
sessionId: session.sessionId,
};
if (session.apiKey) {
options.apiKey = session.apiKey;
}
if (session.thinkingLevel) {
options.reasoning = session.thinkingLevel;
}
const stream = streamSimple(session.model, context, options);
let fullText = "";
for await (const event of stream) {
handleStreamEvent(event, session, (delta) => {
fullText += delta;
});
}
const finalMessage = await stream.result();
const responseText = finalMessage.content
.filter((content) => content.type === "text")
.map((content) => content.text)
.join("") || fullText;
session.messages.push({ role: "assistant", content: responseText });
session.lastModelDescription = `${session.model.provider}/${session.model.id}`;
}
function handleStreamEvent(event, session, onTextDelta) {
if (event.type === "text_delta") {
session.callbacks.onText?.(event.delta);
onTextDelta(event.delta);
return;
}
if (event.type === "thinking_delta") {
session.callbacks.onThinking?.(event.delta);
return;
}
if (event.type === "toolcall_end") {
session.callbacks.onToolStart?.(event.toolCall.name, event.toolCall.arguments);
session.callbacks.onToolEnd?.(event.toolCall.name, false, event.toolCall.arguments);
return;
}
if (event.type === "error") {
const errorMessage = event.error.errorMessage ?? "Hermes stream failed";
throw new Error(errorMessage);
}
if (event.type === "done") {
session.usage = event.message.usage;
}
}
export function describeStreamModel(session) {
return session.lastModelDescription;
}
//# sourceMappingURL=pi-module.js.map

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@@ -1 +1 @@
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@@ -1,9 +1,11 @@
import type { AgentRuntime, AgentRuntimeOptions, AgentSession, AgentSessionResult } from "./types.js";
import type { AgentRuntime, AgentRuntimeOptions, AgentSession, AgentSessionResult, HermesModelConfig } from "./types.js";
export declare class HermesRuntimeAdapter implements AgentRuntime {
private readonly config;
readonly id = "hermes";
readonly name = "Hermes Runtime";
constructor(config?: HermesModelConfig);
createSession(options: AgentRuntimeOptions): Promise<AgentSessionResult>;
promptWithFallback(session: AgentSession, prompt: string, options?: unknown): Promise<void>;
promptWithFallback(session: AgentSession, prompt: string, _options?: unknown): Promise<void>;
describeModel(session: AgentSession): string;
dispose(session: AgentSession): Promise<void>;
}

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@@ -1 +1 @@
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@@ -1,37 +1,44 @@
import { createFnAgent, describeModel, promptWithFallback } from "./pi-module.js";
const getModelDescription = describeModel;
import { createStreamSession, describeStreamModel, streamPrompt } from "./pi-module.js";
export class HermesRuntimeAdapter {
config;
id = "hermes";
name = "Hermes Runtime";
async createSession(options) {
return createFnAgent({
cwd: options.cwd,
systemPrompt: options.systemPrompt,
tools: options.tools,
customTools: options.customTools,
onText: options.onText,
onThinking: options.onThinking,
onToolStart: options.onToolStart,
onToolEnd: options.onToolEnd,
defaultProvider: options.defaultProvider,
defaultModelId: options.defaultModelId,
fallbackProvider: options.fallbackProvider,
fallbackModelId: options.fallbackModelId,
defaultThinkingLevel: options.defaultThinkingLevel,
sessionManager: options.sessionManager,
skillSelection: options.skillSelection,
skills: options.skills,
});
constructor(config = {
provider: "anthropic",
modelId: "claude-sonnet-4-5",
}) {
this.config = config;
}
async promptWithFallback(session, prompt, options) {
return promptWithFallback(session, prompt, options);
async createSession(options) {
const session = createStreamSession({
provider: this.config.provider,
modelId: this.config.modelId,
apiKey: this.config.apiKey,
thinkingLevel: this.config.thinkingLevel,
systemPrompt: options.systemPrompt,
callbacks: {
onText: options.onText,
onThinking: options.onThinking,
onToolStart: options.onToolStart,
onToolEnd: options.onToolEnd,
},
});
return {
session,
sessionFile: undefined,
};
}
async promptWithFallback(session, prompt, _options) {
const userMessage = { role: "user", content: prompt };
session.messages.push(userMessage);
await streamPrompt(session, userMessage);
}
describeModel(session) {
return getModelDescription(session);
return describeStreamModel(session);
}
async dispose(session) {
if (typeof session.dispose === "function") {
await session.dispose();
session.dispose();
}
}
}

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@@ -1 +1 @@
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@@ -4,11 +4,30 @@
* The runtime contract is defined locally to avoid compile-time coupling to
* internal engine exports.
*/
/** Minimal session shape used by the runtime adapter. */
export interface AgentSession {
dispose?: () => Promise<void> | void;
export interface HermesCallbacks {
onText?: (text: string) => void;
onThinking?: (text: string) => void;
onToolStart?: (toolName: string, args?: unknown) => void;
onToolEnd?: (toolName: string, isError: boolean, result?: unknown) => void;
}
/** Options for creating an agent session. Mirrors createFnAgent inputs used by the adapter. */
export interface HermesStreamSession {
model: unknown;
systemPrompt: string;
messages: unknown[];
apiKey: string | undefined;
thinkingLevel: string | undefined;
sessionId: string;
lastModelDescription: string;
callbacks: HermesCallbacks;
usage?: unknown;
dispose(): void;
}
export type AgentSession = HermesStreamSession;
/**
* Options for creating an agent session.
* Mirrors the engine's runtime options shape. Hermes accepts these options
* for compatibility and silently ignores Pi-specific fields.
*/
export interface AgentRuntimeOptions {
cwd: string;
systemPrompt: string;
@@ -16,7 +35,7 @@ export interface AgentRuntimeOptions {
customTools?: unknown;
onText?: (text: string) => void;
onThinking?: (text: string) => void;
onToolStart?: (toolName: string, args?: Record<string, unknown>) => void;
onToolStart?: (toolName: string, args?: unknown) => void;
onToolEnd?: (toolName: string, isError: boolean, result?: unknown) => void;
defaultProvider?: string;
defaultModelId?: string;
@@ -41,4 +60,16 @@ export interface AgentRuntime {
describeModel(session: AgentSession): string;
dispose?(session: AgentSession): Promise<void>;
}
export interface HermesModelConfig {
provider: string;
modelId: string;
apiKey?: string;
thinkingLevel?: string;
}
export interface ResolvedModelConfig {
provider: string;
modelId: string;
apiKey: string | undefined;
thinkingLevel: string | undefined;
}
//# sourceMappingURL=types.d.ts.map

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@@ -1 +1 @@
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View File

@@ -21,8 +21,8 @@
"test": "vitest run --silent=passed-only --reporter=dot"
},
"dependencies": {
"@fusion/engine": "workspace:*",
"@fusion/plugin-sdk": "workspace:*"
"@fusion/plugin-sdk": "workspace:*",
"@mariozechner/pi-ai": "^0.70.0"
},
"devDependencies": {
"@types/node": "^25.5.2",

View File

@@ -1,25 +0,0 @@
/**
* Resolution stub for @fusion/engine in plugin test mode.
*
* Vitest resolves mocked module IDs before applying vi.mock factories. The
* real @fusion/engine workspace package points to dist outputs that are not
* built for plugin-local test runs, so we alias to this stub in vitest config.
*
* Any direct import of @fusion/engine in plugin tests should still fail fast.
*/
const guardError = () =>
new Error(
"Guard: @fusion/engine was imported without an explicit mock. Runtime plugin tests must mock '../pi-module.js' to prevent loading the real engine.",
);
export const createFnAgent = () => {
throw guardError();
};
export const promptWithFallback = async () => {
throw guardError();
};
export const describeModel = () => {
throw guardError();
};

View File

@@ -1,33 +0,0 @@
/**
* Verifies the engine guard mock is active.
*
* This test ensures that the setup-engine-guard.ts setup file is correctly
* loaded and that any test importing @fusion/engine without mocking pi-module
* would fail fast with a descriptive error.
*/
import { describe, it, expect } from "vitest";
describe("engine import guard", () => {
it("should have @fusion/engine mock installed (prevents real engine load)", () => {
// The guard is verified indirectly: if this test file runs at all,
// the setup-engine-guard.ts loaded successfully. The guard throws only
// when a test file actually imports @fusion/engine without mocking
// pi-module.js — and since we don't do that here, we confirm the setup
// is wired without triggering the error.
expect(true).toBe(true);
});
it("should mock pi-module seam (not load real engine)", async () => {
// Dynamically import pi-module to verify it is mocked, not the real one.
// Since this test file has no vi.mock("../pi-module.js"), it relies on
// no code path reaching pi-module at all. The guard in setup-engine-guard.ts
// would throw if the real @fusion/engine were loaded.
//
// We do NOT import pi-module here because that would trigger the guard.
// Instead we verify the setup file exists and is wired via vitest config.
const { existsSync } = await import("node:fs");
const { join } = await import("node:path");
const guardPath = join(import.meta.dirname, "setup-engine-guard.ts");
expect(existsSync(guardPath)).toBe(true);
});
});

View File

@@ -0,0 +1,221 @@
import { afterEach, beforeEach, describe, expect, it, vi } from "vitest";
import {
createStreamSession,
describeStreamModel,
resolveModelConfig,
streamPrompt,
} from "../pi-module.js";
const { mockGetModel, mockStreamSimple } = vi.hoisted(() => ({
mockGetModel: vi.fn(),
mockStreamSimple: vi.fn(),
}));
vi.mock("@mariozechner/pi-ai", () => ({
getModel: mockGetModel,
streamSimple: mockStreamSimple,
}));
function createFakeStream(events: unknown[], finalMessage: unknown) {
return {
async *[Symbol.asyncIterator]() {
for (const event of events) {
yield event;
}
},
result: vi.fn().mockResolvedValue(finalMessage),
};
}
describe("hermes pi-ai stream client", () => {
const originalEnv = { ...process.env };
beforeEach(() => {
vi.clearAllMocks();
process.env = { ...originalEnv };
delete process.env.HERMES_PROVIDER;
delete process.env.HERMES_MODEL_ID;
delete process.env.HERMES_API_KEY;
delete process.env.HERMES_THINKING_LEVEL;
mockGetModel.mockReturnValue({ provider: "anthropic", id: "claude-sonnet-4-5" });
});
afterEach(() => {
process.env = { ...originalEnv };
});
it("resolveModelConfig prefers settings over env and env over defaults", () => {
process.env.HERMES_PROVIDER = "openai";
process.env.HERMES_MODEL_ID = "gpt-5";
process.env.HERMES_API_KEY = "env-key";
process.env.HERMES_THINKING_LEVEL = "medium";
expect(resolveModelConfig()).toEqual({
provider: "openai",
modelId: "gpt-5",
apiKey: "env-key",
thinkingLevel: "medium",
});
expect(
resolveModelConfig({ provider: "anthropic", modelId: "claude", apiKey: "plugin-key", thinkingLevel: "high" }),
).toEqual({
provider: "anthropic",
modelId: "claude",
apiKey: "plugin-key",
thinkingLevel: "high",
});
delete process.env.HERMES_PROVIDER;
delete process.env.HERMES_MODEL_ID;
delete process.env.HERMES_API_KEY;
delete process.env.HERMES_THINKING_LEVEL;
expect(resolveModelConfig()).toEqual({
provider: "anthropic",
modelId: "claude-sonnet-4-5",
apiKey: undefined,
thinkingLevel: undefined,
});
});
it("createStreamSession resolves model and initializes session state", () => {
const onText = vi.fn();
const onThinking = vi.fn();
const onToolStart = vi.fn();
const onToolEnd = vi.fn();
const session = createStreamSession({
provider: "anthropic",
modelId: "claude-sonnet-4-5",
apiKey: "key",
thinkingLevel: "high",
systemPrompt: "You are Hermes",
callbacks: { onText, onThinking, onToolStart, onToolEnd },
});
expect(mockGetModel).toHaveBeenCalledWith("anthropic", "claude-sonnet-4-5");
expect(session.model).toEqual({ provider: "anthropic", id: "claude-sonnet-4-5" });
expect(session.systemPrompt).toBe("You are Hermes");
expect(session.messages).toEqual([]);
expect(session.apiKey).toBe("key");
expect(session.thinkingLevel).toBe("high");
expect(session.callbacks).toEqual({ onText, onThinking, onToolStart, onToolEnd });
expect(session.lastModelDescription).toBe("anthropic/claude-sonnet-4-5");
expect(session.sessionId).toMatch(/^[0-9a-f]{8}-[0-9a-f]{4}-4[0-9a-f]{3}-[89ab][0-9a-f]{3}-[0-9a-f]{12}$/i);
const second = createStreamSession({
provider: "anthropic",
modelId: "claude-sonnet-4-5",
systemPrompt: "You are Hermes",
});
expect(second.sessionId).not.toBe(session.sessionId);
});
it("streamPrompt streams deltas, handles tool calls, stores usage, and appends assistant text only", async () => {
const onText = vi.fn();
const onThinking = vi.fn();
const onToolStart = vi.fn();
const onToolEnd = vi.fn();
const session = createStreamSession({
provider: "anthropic",
modelId: "claude-sonnet-4-5",
apiKey: "api-key",
thinkingLevel: "medium",
systemPrompt: "system",
callbacks: { onText, onThinking, onToolStart, onToolEnd },
});
session.messages.push({ role: "user", content: "hello" });
const doneMessage = {
content: [
{ type: "text", text: "Hello" },
{ type: "thinking", thinking: "internal" },
{ type: "toolCall", id: "t1", name: "bash", arguments: { cmd: "ls" } },
{ type: "text", text: " world" },
],
usage: { input: 1, output: 2 },
};
mockStreamSimple.mockReturnValue(
createFakeStream(
[
{ type: "text_delta", delta: "Hello" },
{ type: "thinking_delta", delta: "thinking" },
{ type: "toolcall_end", toolCall: { name: "bash", arguments: { cmd: "ls" } } },
{ type: "text_delta", delta: " world" },
{ type: "done", message: doneMessage },
],
doneMessage,
),
);
await streamPrompt(session, { role: "user", content: "ignored" } as any);
expect(mockStreamSimple).toHaveBeenCalledWith(
session.model,
{
systemPrompt: "system",
messages: [{ role: "user", content: "hello" }],
},
{
sessionId: session.sessionId,
apiKey: "api-key",
reasoning: "medium",
},
);
expect(onText).toHaveBeenNthCalledWith(1, "Hello");
expect(onText).toHaveBeenNthCalledWith(2, " world");
expect(onThinking).toHaveBeenCalledWith("thinking");
expect(onToolStart).toHaveBeenCalledWith("bash", { cmd: "ls" });
expect(onToolEnd).toHaveBeenCalledWith("bash", false, { cmd: "ls" });
expect(session.usage).toEqual({ input: 1, output: 2 });
expect(session.messages).toEqual([
{ role: "user", content: "hello" },
{ role: "assistant", content: "Hello world" },
]);
expect(describeStreamModel(session)).toBe("anthropic/claude-sonnet-4-5");
});
it("streamPrompt omits optional apiKey/reasoning when unset", async () => {
const session = createStreamSession({
provider: "anthropic",
modelId: "claude-sonnet-4-5",
systemPrompt: "system",
});
session.messages.push({ role: "user", content: "hello" });
const doneMessage = { content: [{ type: "text", text: "ok" }], usage: { input: 1, output: 1 } };
mockStreamSimple.mockReturnValue(createFakeStream([{ type: "done", message: doneMessage }], doneMessage));
await streamPrompt(session, { role: "user", content: "ignored" } as any);
expect(mockStreamSimple).toHaveBeenCalledWith(
session.model,
{ systemPrompt: "system", messages: [{ role: "user", content: "hello" }] },
{ sessionId: session.sessionId },
);
});
it("streamPrompt throws on error event", async () => {
const session = createStreamSession({
provider: "anthropic",
modelId: "claude-sonnet-4-5",
systemPrompt: "system",
});
const errorMessage = {
type: "error",
error: {
errorMessage: "boom",
},
};
mockStreamSimple.mockReturnValue(createFakeStream([errorMessage], { content: [], usage: {} }));
await expect(streamPrompt(session, { role: "user", content: "ignored" } as any)).rejects.toThrow("boom");
expect(session.messages).toEqual([]);
});
});

View File

@@ -1,41 +1,25 @@
import { describe, it, expect, vi, beforeEach, afterEach } from "vitest";
import { beforeEach, describe, expect, it, vi } from "vitest";
const { mockCreateFnAgent, mockPromptWithFallback, mockDescribeModel } = vi.hoisted(() => ({
mockCreateFnAgent: vi.fn(),
mockPromptWithFallback: vi.fn(),
mockDescribeModel: vi.fn().mockReturnValue("unknown model"),
const { mockResolveModelConfig } = vi.hoisted(() => ({
mockResolveModelConfig: vi.fn().mockReturnValue({
provider: "anthropic",
modelId: "claude-sonnet-4-5",
apiKey: undefined,
thinkingLevel: undefined,
}),
}));
vi.mock("../pi-module.js", () => ({
createFnAgent: mockCreateFnAgent,
promptWithFallback: mockPromptWithFallback,
describeModel: mockDescribeModel,
resolveModelConfig: mockResolveModelConfig,
}));
import plugin, { hermesRuntimeMetadata, hermesRuntimeFactory, HERMES_RUNTIME_ID } from "../index.js";
import { HermesRuntimeAdapter } from "../runtime-adapter.js";
interface MockLogger {
info: ReturnType<typeof vi.fn>;
warn: ReturnType<typeof vi.fn>;
error: ReturnType<typeof vi.fn>;
debug: ReturnType<typeof vi.fn>;
}
interface MockContext {
pluginId: string;
settings: Record<string, unknown>;
logger: MockLogger;
emitEvent: ReturnType<typeof vi.fn>;
taskStore: {
getTask: ReturnType<typeof vi.fn>;
};
}
function createMockContext(overrides: Partial<MockContext> = {}): MockContext {
function createMockContext(settings: Record<string, unknown> = {}) {
return {
pluginId: "fusion-plugin-hermes-runtime",
settings: {},
settings,
logger: {
info: vi.fn(),
warn: vi.fn(),
@@ -46,7 +30,6 @@ function createMockContext(overrides: Partial<MockContext> = {}): MockContext {
taskStore: {
getTask: vi.fn(),
},
...overrides,
};
}
@@ -55,74 +38,61 @@ describe("hermes-runtime plugin", () => {
vi.clearAllMocks();
});
afterEach(() => {
vi.restoreAllMocks();
it("has expected manifest identity", () => {
expect(plugin.manifest.id).toBe("fusion-plugin-hermes-runtime");
expect(plugin.manifest.name).toBe("Hermes Runtime Plugin");
expect(plugin.manifest.version).toBe("0.1.0");
expect(plugin.state).toBe("installed");
});
describe("plugin manifest identity", () => {
it("should have correct manifest fields", () => {
expect(plugin.manifest.id).toBe("fusion-plugin-hermes-runtime");
expect(plugin.manifest.name).toBe("Hermes Runtime Plugin");
expect(plugin.manifest.version).toBe("0.1.0");
expect(plugin.manifest.description).toContain("Hermes");
expect(plugin.manifest.author).toBe("Fusion Team");
expect(plugin.state).toBe("installed");
it("registers runtime metadata and exports matching constants", () => {
expect(HERMES_RUNTIME_ID).toBe("hermes");
expect(plugin.runtime?.metadata.runtimeId).toBe("hermes");
expect(plugin.runtime?.metadata.name).toBe("Hermes Runtime");
expect(plugin.runtime?.metadata.description).toContain("pi-ai direct streaming");
expect(plugin.manifest.runtime).toEqual(hermesRuntimeMetadata);
});
it("onLoad resolves model config and logs selected provider/model without api key", async () => {
const ctx = createMockContext({ provider: "openai", modelId: "gpt-5", apiKey: "secret" });
mockResolveModelConfig.mockReturnValue({
provider: "openai",
modelId: "gpt-5",
apiKey: "secret",
thinkingLevel: "medium",
});
await plugin.hooks.onLoad?.(ctx as any);
expect(mockResolveModelConfig).toHaveBeenCalledWith(ctx.settings);
expect(ctx.logger.info).toHaveBeenCalledWith("Hermes Runtime Plugin loaded — using openai/gpt-5");
expect(ctx.logger.info.mock.calls[0][0]).not.toContain("secret");
expect(ctx.emitEvent).toHaveBeenCalledWith("hermes-runtime:loaded", {
runtimeId: "hermes",
version: "0.1.0",
});
});
describe("runtime registration", () => {
it("should register hermes runtime metadata", () => {
expect(plugin.runtime).toBeDefined();
expect(plugin.runtime?.metadata.runtimeId).toBe(HERMES_RUNTIME_ID);
expect(plugin.runtime?.metadata.name).toBe("Hermes Runtime");
expect(plugin.runtime?.metadata.description).toContain("Hermes-backed AI session");
expect(plugin.runtime?.metadata.version).toBe("0.1.0");
it("runtime factory resolves settings and returns HermesRuntimeAdapter", async () => {
const ctx = createMockContext({ provider: "openai", modelId: "gpt-5" });
mockResolveModelConfig.mockReturnValue({
provider: "openai",
modelId: "gpt-5",
apiKey: "api-key",
thinkingLevel: "high",
});
it("should have consistent runtime metadata between export and manifest", () => {
expect(plugin.manifest.runtime).toEqual(hermesRuntimeMetadata);
expect(plugin.runtime?.metadata).toEqual(hermesRuntimeMetadata);
});
});
const runtime = (await hermesRuntimeFactory(ctx as any)) as HermesRuntimeAdapter;
describe("hooks", () => {
it("onLoad should log startup message and emit loaded event", async () => {
const ctx = createMockContext();
await plugin.hooks.onLoad?.(ctx as any);
expect(ctx.logger.info).toHaveBeenCalledWith("Hermes Runtime Plugin loaded");
expect(ctx.emitEvent).toHaveBeenCalledWith("hermes-runtime:loaded", {
runtimeId: HERMES_RUNTIME_ID,
version: "0.1.0",
});
});
it("onUnload should not throw", () => {
expect(() => plugin.hooks.onUnload?.()).not.toThrow();
});
});
describe("runtime factory behavior", () => {
it("should export runtime constants", () => {
expect(HERMES_RUNTIME_ID).toBe("hermes");
expect(hermesRuntimeMetadata.runtimeId).toBe("hermes");
expect(typeof hermesRuntimeFactory).toBe("function");
});
it("runtime factory should return executable runtime adapter", async () => {
const runtime = (await hermesRuntimeFactory(createMockContext() as any)) as HermesRuntimeAdapter;
expect(runtime).toBeInstanceOf(HermesRuntimeAdapter);
expect(runtime.id).toBe("hermes");
expect(runtime.name).toBe("Hermes Runtime");
expect(runtime).not.toHaveProperty("status");
expect(runtime).not.toHaveProperty("execute");
});
it("factory creation should not throw", async () => {
await expect(hermesRuntimeFactory(createMockContext() as any)).resolves.toBeInstanceOf(
HermesRuntimeAdapter,
);
expect(mockResolveModelConfig).toHaveBeenCalledWith(ctx.settings);
expect(runtime).toBeInstanceOf(HermesRuntimeAdapter);
expect(runtime.id).toBe("hermes");
expect(runtime.name).toBe("Hermes Runtime");
expect((runtime as any).config).toEqual({
provider: "openai",
modelId: "gpt-5",
apiKey: "api-key",
thinkingLevel: "high",
});
});
});

View File

@@ -1,21 +1,30 @@
import { describe, it, expect, vi, beforeEach, afterEach } from "vitest";
import { beforeEach, describe, expect, it, vi } from "vitest";
import type { FusionPlugin } from "@fusion/plugin-sdk";
import plugin from "../index.js";
import type { AgentRuntime } from "../types.js";
const { mockCreateFnAgent, mockPromptWithFallback, mockDescribeModel } = vi.hoisted(() => ({
mockCreateFnAgent: vi.fn().mockResolvedValue({
session: { id: "hermes-session" },
sessionFile: "/tmp/hermes.session.json",
const {
mockResolveModelConfig,
mockCreateStreamSession,
mockStreamPrompt,
mockDescribeStreamModel,
} = vi.hoisted(() => ({
mockResolveModelConfig: vi.fn().mockReturnValue({
provider: "anthropic",
modelId: "claude-sonnet-4-5",
apiKey: undefined,
thinkingLevel: undefined,
}),
mockPromptWithFallback: vi.fn().mockResolvedValue(undefined),
mockDescribeModel: vi.fn().mockReturnValue("anthropic/claude-sonnet-4-5"),
mockCreateStreamSession: vi.fn().mockReturnValue({ messages: [], dispose: vi.fn() }),
mockStreamPrompt: vi.fn().mockResolvedValue(undefined),
mockDescribeStreamModel: vi.fn().mockReturnValue("anthropic/claude-sonnet-4-5"),
}));
vi.mock("../pi-module.js", () => ({
createFnAgent: mockCreateFnAgent,
promptWithFallback: mockPromptWithFallback,
describeModel: mockDescribeModel,
resolveModelConfig: mockResolveModelConfig,
createStreamSession: mockCreateStreamSession,
streamPrompt: mockStreamPrompt,
describeStreamModel: mockDescribeStreamModel,
}));
function isAgentRuntime(value: unknown): value is AgentRuntime {
@@ -33,7 +42,7 @@ function isAgentRuntime(value: unknown): value is AgentRuntime {
function createMockContext() {
return {
pluginId: "fusion-plugin-hermes-runtime",
settings: {},
settings: { provider: "anthropic", modelId: "claude-sonnet-4-5" },
logger: {
info: vi.fn(),
warn: vi.fn(),
@@ -50,10 +59,6 @@ describe("Hermes runtime plugin integration", () => {
vi.clearAllMocks();
});
afterEach(() => {
vi.restoreAllMocks();
});
it("exports a valid Fusion plugin manifest", () => {
const fusionPlugin = plugin as FusionPlugin;
@@ -61,17 +66,20 @@ describe("Hermes runtime plugin integration", () => {
expect(fusionPlugin.manifest.id).toBe("fusion-plugin-hermes-runtime");
});
it("registers Hermes runtime metadata", () => {
expect(plugin.runtime).toBeDefined();
expect(plugin.runtime?.metadata.runtimeId).toBe("hermes");
});
it("runtime factory returns an AgentRuntime-compatible Hermes adapter", async () => {
const runtime = (await plugin.runtime!.factory(createMockContext() as any)) as AgentRuntime;
expect(runtime.id).toBe("hermes");
expect(runtime.name).toBe("Hermes Runtime");
expect(isAgentRuntime(runtime)).toBe(true);
const created = await runtime.createSession({ cwd: "/tmp", systemPrompt: "helpful" });
expect(created.sessionFile).toBeUndefined();
await runtime.promptWithFallback(created.session, "Hello integration");
expect(mockStreamPrompt).toHaveBeenCalled();
expect(runtime.describeModel(created.session)).toBe("anthropic/claude-sonnet-4-5");
});
it("onLoad emits hermes-runtime:loaded with runtime metadata", async () => {
@@ -79,6 +87,7 @@ describe("Hermes runtime plugin integration", () => {
await plugin.hooks.onLoad?.(ctx as any);
expect(mockResolveModelConfig).toHaveBeenCalledWith(ctx.settings);
expect(ctx.emitEvent).toHaveBeenCalledWith("hermes-runtime:loaded", {
runtimeId: "hermes",
version: "0.1.0",

View File

@@ -1,97 +1,109 @@
import { describe, it, expect, vi, beforeEach, afterEach } from "vitest";
import { describe, it, expect, vi, beforeEach } from "vitest";
import { HermesRuntimeAdapter } from "../runtime-adapter.js";
const { mockCreateFnAgent, mockPromptWithFallback, mockDescribeModel } = vi.hoisted(() => ({
mockCreateFnAgent: vi.fn(),
mockPromptWithFallback: vi.fn(),
mockDescribeModel: vi.fn(),
const {
mockCreateStreamSession,
mockStreamPrompt,
mockDescribeStreamModel,
} = vi.hoisted(() => ({
mockCreateStreamSession: vi.fn(),
mockStreamPrompt: vi.fn(),
mockDescribeStreamModel: vi.fn(),
}));
vi.mock("../pi-module.js", () => ({
createFnAgent: mockCreateFnAgent,
promptWithFallback: mockPromptWithFallback,
describeModel: mockDescribeModel,
createStreamSession: mockCreateStreamSession,
streamPrompt: mockStreamPrompt,
describeStreamModel: mockDescribeStreamModel,
}));
describe("HermesRuntimeAdapter", () => {
let adapter: HermesRuntimeAdapter;
beforeEach(() => {
vi.clearAllMocks();
mockDescribeModel.mockReturnValue("mock/anthropic-claude");
adapter = new HermesRuntimeAdapter();
});
afterEach(() => {
vi.restoreAllMocks();
});
it("has stable runtime identity", () => {
const adapter = new HermesRuntimeAdapter({ provider: "anthropic", modelId: "claude-sonnet-4-5" });
expect(adapter.id).toBe("hermes");
expect(adapter.name).toBe("Hermes Runtime");
});
it("delegates createSession to createFnAgent with mapped options", async () => {
const mockSession = { dispose: vi.fn() };
mockCreateFnAgent.mockResolvedValue({ session: mockSession, sessionFile: "/tmp/session.json" });
it("createSession passes model config/systemPrompt/callbacks and returns undefined sessionFile", async () => {
const adapter = new HermesRuntimeAdapter({
provider: "openai",
modelId: "gpt-5",
apiKey: "secret",
thinkingLevel: "high",
});
const session = { messages: [], dispose: vi.fn() };
mockCreateStreamSession.mockReturnValue(session);
const onText = vi.fn();
const onThinking = vi.fn();
const onToolStart = vi.fn();
const onToolEnd = vi.fn();
const result = await adapter.createSession({
cwd: "/project",
systemPrompt: "You are helpful",
defaultProvider: "anthropic",
defaultModelId: "claude-sonnet-4-5",
fallbackProvider: "openai",
fallbackModelId: "gpt-4o",
cwd: "/tmp/project",
systemPrompt: "You are Hermes",
tools: "coding",
customTools: [{ name: "ignored" }],
sessionManager: { foo: "bar" },
skillSelection: { all: true },
skills: ["bash"],
onText,
onThinking,
onToolStart,
onToolEnd,
});
expect(mockCreateFnAgent).toHaveBeenCalledWith({
cwd: "/project",
systemPrompt: "You are helpful",
tools: undefined,
customTools: undefined,
onText: undefined,
onThinking: undefined,
onToolStart: undefined,
onToolEnd: undefined,
defaultProvider: "anthropic",
defaultModelId: "claude-sonnet-4-5",
fallbackProvider: "openai",
fallbackModelId: "gpt-4o",
defaultThinkingLevel: undefined,
sessionManager: undefined,
skillSelection: undefined,
skills: ["bash"],
expect(mockCreateStreamSession).toHaveBeenCalledWith({
provider: "openai",
modelId: "gpt-5",
apiKey: "secret",
thinkingLevel: "high",
systemPrompt: "You are Hermes",
callbacks: {
onText,
onThinking,
onToolStart,
onToolEnd,
},
});
expect(result.session).toBe(mockSession);
expect(result.sessionFile).toBe("/tmp/session.json");
expect(result).toEqual({ session, sessionFile: undefined });
expect(JSON.stringify(mockCreateStreamSession.mock.calls[0][0])).not.toContain("/tmp/project");
expect(JSON.stringify(mockCreateStreamSession.mock.calls[0][0])).not.toContain("coding");
});
it("delegates promptWithFallback to pi seam", async () => {
const session = { id: "s-1" };
mockPromptWithFallback.mockResolvedValue(undefined);
it("promptWithFallback appends user message then delegates to streamPrompt", async () => {
const adapter = new HermesRuntimeAdapter({ provider: "anthropic", modelId: "claude-sonnet-4-5" });
const session = { messages: [], dispose: vi.fn() } as any;
await adapter.promptWithFallback(session as any, "Hello", { images: [] });
await adapter.promptWithFallback(session, "Hello from Hermes");
expect(mockPromptWithFallback).toHaveBeenCalledWith(session, "Hello", { images: [] });
expect(session.messages).toEqual([{ role: "user", content: "Hello from Hermes" }]);
expect(mockStreamPrompt).toHaveBeenCalledWith(session, {
role: "user",
content: "Hello from Hermes",
});
});
it("delegates describeModel to pi seam", () => {
const session = { id: "s-2" };
mockDescribeModel.mockReturnValue("anthropic/claude-sonnet-4-5");
it("describeModel delegates to describeStreamModel", () => {
const adapter = new HermesRuntimeAdapter({ provider: "anthropic", modelId: "claude-sonnet-4-5" });
const session = { messages: [], dispose: vi.fn() } as any;
mockDescribeStreamModel.mockReturnValue("anthropic/claude-sonnet-4-5");
const result = adapter.describeModel(session as any);
expect(mockDescribeModel).toHaveBeenCalledWith(session);
expect(result).toBe("anthropic/claude-sonnet-4-5");
expect(adapter.describeModel(session)).toBe("anthropic/claude-sonnet-4-5");
expect(mockDescribeStreamModel).toHaveBeenCalledWith(session);
});
it("dispose calls session.dispose when present and no-ops otherwise", async () => {
const disposeMock = vi.fn().mockResolvedValue(undefined);
it("dispose is a no-op when missing and calls dispose when present", async () => {
const adapter = new HermesRuntimeAdapter({ provider: "anthropic", modelId: "claude-sonnet-4-5" });
const dispose = vi.fn();
await adapter.dispose({ dispose: disposeMock });
await expect(adapter.dispose({ id: "no-dispose" } as any)).resolves.toBeUndefined();
await expect(adapter.dispose({ messages: [], dispose } as any)).resolves.toBeUndefined();
await expect(adapter.dispose({ messages: [] } as any)).resolves.toBeUndefined();
expect(disposeMock).toHaveBeenCalledTimes(1);
expect(dispose).toHaveBeenCalledTimes(1);
});
});

View File

@@ -1,26 +0,0 @@
/**
* Engine import guard for plugin tests.
*
* Runtime plugin tests mock the seam module (../pi-module.js) to avoid loading
* the real @fusion/engine, which pulls in @fusion/core and triggers homedir()-
* based path resolution. This setup file installs a global vi.mock on
* @fusion/engine that throws if the real module is ever loaded without an
* explicit override.
*
* If you see the guard error in a test:
* 1. Add `vi.mock("../pi-module.js", ...)` at the top of the failing test
* 2. If you genuinely need to import @fusion/engine, you must also add HOME
* isolation setup (see setup-test-isolation.ts in packages/core) to this
* plugin's vitest config setupFiles before the guard.
*/
import { vi } from "vitest";
vi.mock("@fusion/engine", () => {
throw new Error(
"Guard: @fusion/engine was imported without an explicit mock. " +
"Runtime plugin tests must mock '../pi-module.js' to prevent loading " +
"the real engine. If you need the real engine, add HOME isolation " +
"setup (setup-test-isolation.ts) to vitest config setupFiles BEFORE " +
"this guard, and remove or override this mock.",
);
});

View File

@@ -6,6 +6,7 @@
*/
import { definePlugin } from "@fusion/plugin-sdk";
import { resolveModelConfig } from "./pi-module.js";
import { HermesRuntimeAdapter } from "./runtime-adapter.js";
import type {
FusionPlugin,
@@ -21,14 +22,21 @@ const HERMES_RUNTIME_VERSION = "0.1.0";
const hermesRuntimeMetadata: PluginRuntimeManifestMetadata = {
runtimeId: HERMES_RUNTIME_ID,
name: "Hermes Runtime",
description: "Hermes-backed AI session using the user's configured pi provider and model",
description: "Hermes raw-model runtime using pi-ai direct streaming",
version: HERMES_RUNTIME_VERSION,
};
// ── Hermes Runtime Factory ────────────────────────────────────────────────────
const hermesRuntimeFactory: PluginRuntimeFactory = async () => {
return new HermesRuntimeAdapter();
const hermesRuntimeFactory: PluginRuntimeFactory = async (ctx) => {
const config = resolveModelConfig(ctx.settings);
return new HermesRuntimeAdapter({
provider: config.provider,
modelId: config.modelId,
apiKey: config.apiKey,
thinkingLevel: config.thinkingLevel,
});
};
// ── Plugin Definition ─────────────────────────────────────────────────────────
@@ -46,7 +54,8 @@ const plugin: FusionPlugin = definePlugin({
state: "installed",
hooks: {
onLoad: (ctx) => {
ctx.logger.info("Hermes Runtime Plugin loaded");
const config = resolveModelConfig(ctx.settings);
ctx.logger.info(`Hermes Runtime Plugin loaded — using ${config.provider}/${config.modelId}`);
ctx.emitEvent("hermes-runtime:loaded", {
runtimeId: HERMES_RUNTIME_ID,
version: HERMES_RUNTIME_VERSION,

View File

@@ -1,53 +1,134 @@
/**
* Pi Module Seam
*
* Provides a mockable import path for pi functions used by the HermesRuntimeAdapter.
* Tests intercept this module via `vi.mock("../pi-module.js", ...)`. The runtime
* implementations come from @fusion/engine; the local types provide a loose
* surface so the adapter doesn't have to depend on @fusion/engine's full types.
*/
import { randomUUID } from "node:crypto";
import {
createFnAgent as _createFnAgent,
promptWithFallback as _promptWithFallback,
describeModel as _describeModel,
} from "@fusion/engine";
getModel,
streamSimple,
type Api,
type AssistantMessageEvent,
type Context,
type Message,
type Model,
type SimpleStreamOptions,
type ThinkingLevel,
} from "@mariozechner/pi-ai";
import type {
HermesCallbacks,
HermesStreamSession,
ResolvedModelConfig,
} from "./types.js";
export interface PiAgentSession {
dispose?: () => Promise<void> | void;
const DEFAULT_PROVIDER = "anthropic";
const DEFAULT_MODEL_ID = "claude-sonnet-4-5";
function resolveStringSetting(value: unknown): string | undefined {
return typeof value === "string" && value.trim().length > 0 ? value.trim() : undefined;
}
export interface PiAgentResult {
session: PiAgentSession;
sessionFile?: string;
export function resolveModelConfig(settings?: Record<string, unknown>): ResolvedModelConfig {
const provider =
resolveStringSetting(settings?.provider) ?? resolveStringSetting(process.env.HERMES_PROVIDER) ?? DEFAULT_PROVIDER;
const modelId =
resolveStringSetting(settings?.modelId) ?? resolveStringSetting(process.env.HERMES_MODEL_ID) ?? DEFAULT_MODEL_ID;
const apiKey = resolveStringSetting(settings?.apiKey) ?? resolveStringSetting(process.env.HERMES_API_KEY);
const thinkingLevel =
resolveStringSetting(settings?.thinkingLevel) ?? resolveStringSetting(process.env.HERMES_THINKING_LEVEL) ?? undefined;
return { provider, modelId, apiKey, thinkingLevel };
}
export interface PiAgentOptions {
cwd: string;
export function createStreamSession(options: {
provider: string;
modelId: string;
apiKey?: string;
thinkingLevel?: string;
systemPrompt: string;
tools?: "coding" | "readonly";
customTools?: unknown;
onText?: (text: string) => void;
onThinking?: (text: string) => void;
onToolStart?: (toolName: string, args?: Record<string, unknown>) => void;
onToolEnd?: (toolName: string, isError: boolean, result?: unknown) => void;
defaultProvider?: string;
defaultModelId?: string;
fallbackProvider?: string;
fallbackModelId?: string;
defaultThinkingLevel?: string;
sessionManager?: unknown;
skillSelection?: unknown;
skills?: string[];
callbacks?: HermesCallbacks;
}): HermesStreamSession {
const model = getModel(options.provider as never, options.modelId as never) as Model<Api>;
return {
model,
systemPrompt: options.systemPrompt,
messages: [],
apiKey: options.apiKey,
thinkingLevel: options.thinkingLevel,
sessionId: randomUUID(),
lastModelDescription: `${model.provider}/${model.id}`,
callbacks: options.callbacks ?? {},
usage: undefined,
dispose: () => undefined,
};
}
export const createFnAgent = _createFnAgent as unknown as (
options: PiAgentOptions,
) => Promise<PiAgentResult>;
export async function streamPrompt(session: HermesStreamSession, _userMessage: Message): Promise<void> {
const context: Context = {
systemPrompt: session.systemPrompt,
messages: [...(session.messages as Message[])],
};
export const promptWithFallback = _promptWithFallback as unknown as (
session: PiAgentSession,
prompt: string,
options?: unknown,
) => Promise<void>;
const options: SimpleStreamOptions = {
sessionId: session.sessionId,
};
export const describeModel = _describeModel as unknown as (session: PiAgentSession) => string;
if (session.apiKey) {
options.apiKey = session.apiKey;
}
if (session.thinkingLevel) {
options.reasoning = session.thinkingLevel as ThinkingLevel;
}
const stream = streamSimple(session.model as Model<Api>, context, options);
let fullText = "";
for await (const event of stream) {
handleStreamEvent(event, session, (delta) => {
fullText += delta;
});
}
const finalMessage = await stream.result();
const responseText =
finalMessage.content
.filter((content) => content.type === "text")
.map((content) => content.text)
.join("") || fullText;
session.messages.push({ role: "assistant", content: responseText });
session.lastModelDescription = `${(session.model as Model<Api>).provider}/${(session.model as Model<Api>).id}`;
}
function handleStreamEvent(
event: AssistantMessageEvent,
session: HermesStreamSession,
onTextDelta: (delta: string) => void,
): void {
if (event.type === "text_delta") {
session.callbacks.onText?.(event.delta);
onTextDelta(event.delta);
return;
}
if (event.type === "thinking_delta") {
session.callbacks.onThinking?.(event.delta);
return;
}
if (event.type === "toolcall_end") {
session.callbacks.onToolStart?.(event.toolCall.name, event.toolCall.arguments);
session.callbacks.onToolEnd?.(event.toolCall.name, false, event.toolCall.arguments);
return;
}
if (event.type === "error") {
const errorMessage = event.error.errorMessage ?? "Hermes stream failed";
throw new Error(errorMessage);
}
if (event.type === "done") {
session.usage = event.message.usage;
}
}
export function describeStreamModel(session: HermesStreamSession): string {
return session.lastModelDescription;
}

View File

@@ -3,47 +3,55 @@ import type {
AgentRuntimeOptions,
AgentSession,
AgentSessionResult,
HermesModelConfig,
} from "./types.js";
import { createFnAgent, describeModel, promptWithFallback } from "./pi-module.js";
const getModelDescription = describeModel;
import { createStreamSession, describeStreamModel, streamPrompt } from "./pi-module.js";
export class HermesRuntimeAdapter implements AgentRuntime {
readonly id = "hermes";
readonly name = "Hermes Runtime";
constructor(
private readonly config: HermesModelConfig = {
provider: "anthropic",
modelId: "claude-sonnet-4-5",
},
) {}
async createSession(options: AgentRuntimeOptions): Promise<AgentSessionResult> {
return createFnAgent({
cwd: options.cwd,
const session = createStreamSession({
provider: this.config.provider,
modelId: this.config.modelId,
apiKey: this.config.apiKey,
thinkingLevel: this.config.thinkingLevel,
systemPrompt: options.systemPrompt,
tools: options.tools,
customTools: options.customTools,
onText: options.onText,
onThinking: options.onThinking,
onToolStart: options.onToolStart,
onToolEnd: options.onToolEnd,
defaultProvider: options.defaultProvider,
defaultModelId: options.defaultModelId,
fallbackProvider: options.fallbackProvider,
fallbackModelId: options.fallbackModelId,
defaultThinkingLevel: options.defaultThinkingLevel,
sessionManager: options.sessionManager,
skillSelection: options.skillSelection,
skills: options.skills,
callbacks: {
onText: options.onText,
onThinking: options.onThinking,
onToolStart: options.onToolStart,
onToolEnd: options.onToolEnd,
},
});
return {
session,
sessionFile: undefined,
};
}
async promptWithFallback(session: AgentSession, prompt: string, options?: unknown): Promise<void> {
return promptWithFallback(session, prompt, options);
async promptWithFallback(session: AgentSession, prompt: string, _options?: unknown): Promise<void> {
const userMessage = { role: "user", content: prompt };
session.messages.push(userMessage);
await streamPrompt(session, userMessage as any);
}
describeModel(session: AgentSession): string {
return getModelDescription(session);
return describeStreamModel(session);
}
async dispose(session: AgentSession): Promise<void> {
if (typeof (session as { dispose?: () => Promise<void> }).dispose === "function") {
await (session as { dispose: () => Promise<void> }).dispose();
if (typeof session.dispose === "function") {
session.dispose();
}
}
}

View File

@@ -5,12 +5,33 @@
* internal engine exports.
*/
/** Minimal session shape used by the runtime adapter. */
export interface AgentSession {
dispose?: () => Promise<void> | void;
export interface HermesCallbacks {
onText?: (text: string) => void;
onThinking?: (text: string) => void;
onToolStart?: (toolName: string, args?: unknown) => void;
onToolEnd?: (toolName: string, isError: boolean, result?: unknown) => void;
}
/** Options for creating an agent session. Mirrors createFnAgent inputs used by the adapter. */
export interface HermesStreamSession {
model: unknown;
systemPrompt: string;
messages: unknown[];
apiKey: string | undefined;
thinkingLevel: string | undefined;
sessionId: string;
lastModelDescription: string;
callbacks: HermesCallbacks;
usage?: unknown;
dispose(): void;
}
export type AgentSession = HermesStreamSession;
/**
* Options for creating an agent session.
* Mirrors the engine's runtime options shape. Hermes accepts these options
* for compatibility and silently ignores Pi-specific fields.
*/
export interface AgentRuntimeOptions {
cwd: string;
systemPrompt: string;
@@ -18,7 +39,7 @@ export interface AgentRuntimeOptions {
customTools?: unknown;
onText?: (text: string) => void;
onThinking?: (text: string) => void;
onToolStart?: (toolName: string, args?: Record<string, unknown>) => void;
onToolStart?: (toolName: string, args?: unknown) => void;
onToolEnd?: (toolName: string, isError: boolean, result?: unknown) => void;
defaultProvider?: string;
defaultModelId?: string;
@@ -45,3 +66,17 @@ export interface AgentRuntime {
describeModel(session: AgentSession): string;
dispose?(session: AgentSession): Promise<void>;
}
export interface HermesModelConfig {
provider: string;
modelId: string;
apiKey?: string;
thinkingLevel?: string;
}
export interface ResolvedModelConfig {
provider: string;
modelId: string;
apiKey: string | undefined;
thinkingLevel: string | undefined;
}

View File

@@ -1,39 +1,14 @@
import { fileURLToPath } from "node:url";
import { defineConfig } from "vitest/config";
const requestedMaxWorkers = Number.parseInt(process.env.VITEST_MAX_WORKERS ?? "2", 10);
const maxWorkers = Math.max(1, Math.min(4, Number.isFinite(requestedMaxWorkers) ? requestedMaxWorkers : 2));
process.env.VITEST_MAX_WORKERS = String(maxWorkers);
const engineGuardStub = fileURLToPath(new URL("./src/__tests__/engine-guard-stub.ts", import.meta.url));
export default defineConfig({
resolve: {
alias: {
"@fusion/engine": fileURLToPath(new URL("../../packages/engine/src/index.ts", import.meta.url)),
},
},
test: {
include: ["src/**/*.test.ts"],
pool: "threads",
maxWorkers,
poolOptions: { threads: { minThreads: 1, maxThreads: maxWorkers }, forks: { minForks: 1, maxForks: maxWorkers } },
// ── Engine guard ──────────────────────────────────────────────────────
// This setup file installs a vi.mock("@fusion/engine") that throws if
// the real engine is loaded. All plugin tests must mock "../pi-module.js"
// (the seam) to prevent the real @fusion/engine import chain.
//
// If you introduce a test that genuinely needs @fusion/engine:
// 1. Create a setup-test-isolation.ts (HOME override) following the
// pattern in packages/core/src/__tests__/setup-test-isolation.ts
// 2. Add it to setupFiles BEFORE this guard
// 3. Add a vi.mock("@fusion/engine", ...) override in the test file
// or a dedicated setup file to replace the throwing mock
setupFiles: ["./src/__tests__/setup-engine-guard.ts"],
alias: {
// Resolve @fusion/engine to a local test stub so Vitest can register the
// guard mock without requiring built dist artifacts from packages/engine.
"@fusion/engine": engineGuardStub,
},
},
});