vercel__vercel-plugin/hooks/user-prompt-submit-telemetry.mjs

#!/usr/bin/env node

// hooks/src/user-prompt-submit-telemetry.mts
import { existsSync, readFileSync, writeFileSync, mkdirSync } from "fs";
import { homedir, tmpdir } from "os";
import { join, dirname } from "path";
import { getTelemetryOverride, isPromptTelemetryEnabled, trackEvents } from "./telemetry.mjs";
var PREF_PATH = join(homedir(), ".claude", "vercel-plugin-telemetry-preference");
var MIN_PROMPT_LENGTH = 10;
function parseStdin() {
  try {
    const raw = readFileSync(0, "utf-8").trim();
    if (!raw) return null;
    return JSON.parse(raw);
  } catch {
    return null;
  }
}
function resolveSessionId(input) {
  return input.session_id || input.conversation_id || "";
}
function resolvePrompt(input) {
  return input.prompt || input.message || "";
}
async function main() {
  const input = parseStdin();
  const sessionId = input ? resolveSessionId(input) : "";
  const prompt = input ? resolvePrompt(input) : "";
  const telemetryOverride = getTelemetryOverride();
  if (isPromptTelemetryEnabled() && sessionId && prompt.length >= MIN_PROMPT_LENGTH) {
    await trackEvents(sessionId, [
      { key: "prompt:text", value: prompt }
    ]).catch(() => {
    });
  }
  if (telemetryOverride === "off") {
    process.stdout.write("{}");
    process.exit(0);
  }
  try {
    const pref = readFileSync(PREF_PATH, "utf-8").trim();
    if (pref === "enabled" || pref === "disabled" || pref === "asked") {
      process.stdout.write("{}");
      process.exit(0);
    }
  } catch {
  }
  if (sessionId) {
    const flagPath = join(tmpdir(), `vercel-plugin-telemetry-asked-${sessionId}`);
    if (existsSync(flagPath)) {
      process.stdout.write("{}");
      process.exit(0);
    }
    try {
      mkdirSync(dirname(flagPath), { recursive: true });
      writeFileSync(flagPath, "1", { flag: "wx" });
    } catch {
      process.stdout.write("{}");
      process.exit(0);
    }
  }
  try {
    mkdirSync(dirname(PREF_PATH), { recursive: true });
    writeFileSync(PREF_PATH, "asked");
  } catch {
  }
  const message = [
    "After responding to the user's message, use the AskUserQuestion tool to ask about telemetry.",
    "Use this exact question configuration:",
    '- question: "The Vercel plugin collects anonymous usage data such as skill injection patterns and tools used by default. Would you like to also share your prompt text to help improve skill matching? This choice only controls prompt telemetry."',
    '- header: "Telemetry"',
    '- options: [{"label": "Share prompts", "description": "Share prompt text in addition to default anonymous usage data"}, {"label": "No thanks", "description": "Keep prompt text private. This only disables prompt telemetry"}]',
    "- multiSelect: false",
    "",
    "After the user responds:",
    "- If they chose \"Share prompts\", run: `echo 'enabled' > ~/.claude/vercel-plugin-telemetry-preference`",
    "- If they chose \"No thanks\" or anything else, run: `echo 'disabled' > ~/.claude/vercel-plugin-telemetry-preference`"
  ].join("\n");
  const output = {
    hookSpecificOutput: {
      hookEventName: "UserPromptSubmit",
      additionalContext: message
    }
  };
  process.stdout.write(JSON.stringify(output));
  process.exit(0);
}
main();