预测输出

export API_ROOT_URL='https://gateway.example.com'
export API_KEY='YOUR_API_KEY'
export API_MODEL='YOUR_MODEL_ID'
node examples/predicted-output.mjs

import { requestJSON } from './http-client.mjs';

try {
  const model = process.env.API_MODEL;
  if (!model?.trim()) throw new Error('Set model.');
  const original = 'export function greet(name) {\n  return `Hello, ${name}!`;\n}\n';
  const result = await requestJSON('/v1/chat/completions', {
    model,
    messages: [
      { role: 'system', content: 'Return the complete revised source only, without Markdown fences or explanations.' },
      { role: 'user', content: `Replace Hello with Welcome in this source. Keep everything else unchanged.\n${original}` },
    ],
    prediction: { type: 'content', content: original },
  });
  const choice = result.choices?.[0];
  const message = choice?.message;
  if (!Array.isArray(result.choices) || result.choices.length !== 1 || choice?.index !== 0
    || choice.finish_reason !== 'stop' || message?.role !== 'assistant'
    || message.refusal != null || message.tool_calls != null || message.function_call != null
    || typeof message.content !== 'string' || !message.content.trim()) throw new Error('Incomplete text.');
  // Generated code is returned for review, never written over source files or executed.
  console.log(JSON.stringify({ proposed_source: message.content }));
} catch {
  console.error('Prediction example failed. Check native Chat support and completion status. No automatic retry.');
  process.exitCode = 1;
}