Mock LLM API 指南

import OpenAI from 'openai';

const openai = new OpenAI({
  baseURL: 'https://xyz789.mockapi.dog/llm',
  apiKey: 'dummy-api-key', // Mock endpoint doesn't check API keys
});

async function main() {
  const stream = await openai.chat.completions.create({
    model: 'gpt-5.4',
    messages: [{ role: 'user', content: 'Hello!' }],
    stream: true,
  });

  for await (const chunk of stream) {
    const content = chunk.choices[0]?.delta?.content || '';
    process.stdout.write(content);
  }
}

main();

import OpenAI from 'openai';

const openai = new OpenAI({
  baseURL: 'https://xyz789.mockapi.dog/llm',
  apiKey: 'dummy-api-key', // Mock endpoint doesn't check API keys
});

async function main() {
  const stream = await openai.responses.create({
    model: 'gpt-5.4',
    input: 'Hello!',
    stream: true,
  });

  for await (const event of stream) {
    if (event.type === 'response.output_text.delta') {
      process.stdout.write(event.delta);
    }
  }
}

main();

import Anthropic from '@anthropic-ai/sdk';

const anthropic = new Anthropic({
  baseURL: 'https://xyz789.mockapi.dog/claude',
  apiKey: 'dummy-api-key', // Mock endpoint doesn't check API keys
});

async function main() {
  const stream = await anthropic.messages.stream({
    model: 'claude-sonnet-5',
    max_tokens: 1024,
    messages: [{ role: 'user', content: 'Hello!' }],
  });

  for await (const chunk of stream) {
    if (chunk.type === 'content_block_delta' && chunk.delta.type === 'text_delta') {
      process.stdout.write(chunk.delta.text);
    }
  }
}

main();

async function streamResponse() {
  const response = await fetch('https://xyz789.mockapi.dog/llm/stream', {
    method: 'POST',
    headers: {
      'Content-Type': 'application/json',
    },
    body: JSON.stringify({
      prompt: 'Hello, world!',
      stream: true, // without this (or Accept: text/event-stream) you get plain JSON
    }),
  });

  const reader = response.body?.getReader();
  const decoder = new TextDecoder();

  while (true) {
    const { done, value } = await reader.read();
    if (done) break;

    const chunk = decoder.decode(value);
    const lines = chunk.split('\n');

    for (const line of lines) {
      if (line.startsWith('data: ')) {
        try {
          const json = JSON.parse(line.slice(6));
          if (json.done) return;
          console.log(json.token);
        } catch (e) {
          // Skip invalid JSON
        }
      }
    }
  }
}

streamResponse();