multi-llm
Version:
A unified TypeScript/JavaScript package to use LLMs across ALL platforms with support for 17 major providers, streaming, MCP tools, and intelligent response parsing
157 lines • 7.09 kB
JavaScript
;
var __importDefault = (this && this.__importDefault) || function (mod) {
return (mod && mod.__esModule) ? mod : { "default": mod };
};
Object.defineProperty(exports, "__esModule", { value: true });
exports.OpenRouterProvider = void 0;
const axios_1 = __importDefault(require("axios"));
const provider_1 = require("../provider");
const llm_1 = require("../llm");
const parser_1 = require("../utils/parser");
class OpenRouterProvider extends provider_1.Provider {
constructor(apiKey, baseUrl) {
super(apiKey, baseUrl);
this.baseUrl = baseUrl || 'https://openrouter.ai/api/v1';
}
async getModels() {
try {
const response = await axios_1.default.get(`${this.baseUrl}/models`, {
headers: {
'Authorization': `Bearer ${this.apiKey}`,
'Content-Type': 'application/json'
}
});
return response.data.data.map((model) => ({
id: model.id,
name: model.name || model.id,
contextWindow: model.context_length || 4096,
maxOutputTokens: model.max_completion_tokens,
description: model.description,
pricing: model.pricing ? {
input: parseFloat(model.pricing.prompt) * 1000000, // Convert to per million tokens
output: parseFloat(model.pricing.completion) * 1000000,
currency: 'USD'
} : undefined
}));
}
catch (error) {
throw new Error(`Failed to fetch OpenRouter models: ${error}`);
}
}
createLLM(modelId) {
return new llm_1.LLM(this, modelId);
}
async chat(modelId, messages, options, streamCallback) {
try {
const payload = {
model: modelId,
messages: messages.map(msg => ({ role: msg.role, content: msg.content })),
temperature: options.temperature,
max_tokens: options.maxTokens,
top_p: options.topP,
stream: !!streamCallback
};
if (streamCallback) {
return this.streamChat(payload, streamCallback);
}
else {
const response = await axios_1.default.post(`${this.baseUrl}/chat/completions`, payload, {
headers: {
'Authorization': `Bearer ${this.apiKey}`,
'Content-Type': 'application/json',
'HTTP-Referer': 'https://github.com/multi-llm/multi-llm',
'X-Title': 'Multi-LLM Package'
}
});
// Debug logging for response structure
if (!response.data.choices || response.data.choices.length === 0) {
console.error('OpenRouter response missing choices:', response.data);
throw new Error('OpenRouter response missing choices array');
}
const message = response.data.choices[0].message;
// OpenRouter may return content in different fields depending on model
let content = message?.content || '';
// Some models use reasoning field for the actual response
if (!content && message?.reasoning) {
content = message.reasoning;
}
// Debug empty content (only in development/testing)
if (!content && process.env.NODE_ENV !== 'production') {
console.warn('OpenRouter returned empty content:', {
choices: response.data.choices,
message: message,
content: content
});
}
const parsed = parser_1.ResponseParser.parseResponse(content);
return {
raw: response.data,
parsed,
usage: {
inputTokens: response.data.usage?.prompt_tokens || 0,
outputTokens: response.data.usage?.completion_tokens || 0,
totalTokens: response.data.usage?.total_tokens || 0
}
};
}
}
catch (error) {
throw new Error(`OpenRouter chat failed: ${error}`);
}
}
async streamChat(payload, streamCallback) {
return new Promise((resolve, reject) => {
let fullContent = '';
let rawResponse = null;
const source = axios_1.default.post(`${this.baseUrl}/chat/completions`, payload, {
headers: {
'Authorization': `Bearer ${this.apiKey}`,
'Content-Type': 'application/json',
'HTTP-Referer': 'https://github.com/multi-llm/multi-llm',
'X-Title': 'Multi-LLM Package'
},
responseType: 'stream'
});
source.then(response => {
response.data.on('data', (chunk) => {
const lines = chunk.toString().split('\n');
for (const line of lines) {
if (line.startsWith('data: ')) {
const data = line.slice(6);
if (data === '[DONE]') {
const parsed = parser_1.ResponseParser.parseResponse(fullContent);
resolve({
raw: rawResponse,
parsed,
usage: undefined
});
return;
}
try {
const parsed = JSON.parse(data);
rawResponse = parsed;
// Handle both content and reasoning fields for streaming
const delta = parsed.choices[0]?.delta;
let content = delta?.content || '';
// Some models stream in reasoning field
if (!content && delta?.reasoning) {
content = delta.reasoning;
}
if (content) {
fullContent += content;
streamCallback(content);
}
}
catch (e) {
// Ignore parsing errors for partial chunks
}
}
}
});
response.data.on('error', reject);
}).catch(reject);
});
}
}
exports.OpenRouterProvider = OpenRouterProvider;
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