Function parseCopilotSDKServerArgsFromEnv

actions/setup/js/copilot_harness.cjs:618–638

* Parse GH_AW_COPILOT_SDK_SERVER_ARGS for SDK driver mode. * Returns [] when unset or invalid so sidecar defaults remain available. * * @param {string | undefined} serverArgsEnv * @param {{ logger?: (msg: string) => void }} [options] * @returns {string[]}

(serverArgsEnv, options)

 * @returns {string[]}
 */
function parseCopilotSDKServerArgsFromEnv(serverArgsEnv, options) {
  const logger = options?.logger ?? log;
  if (!serverArgsEnv) {
    logger("copilot-sdk driver mode: GH_AW_COPILOT_SDK_SERVER_ARGS is not set; using sidecar default args");
    return [];
  }

  try {
    const parsed = JSON.parse(serverArgsEnv);
    if (!Array.isArray(parsed) || parsed.some(arg => typeof arg !== "string")) {
      logger("copilot-sdk driver mode: GH_AW_COPILOT_SDK_SERVER_ARGS must be a JSON string array; using sidecar default args");
      return [];
    }
    logger(`copilot-sdk driver mode: parsed ${parsed.length} sidecar args from GH_AW_COPILOT_SDK_SERVER_ARGS`);
    return parsed;
  } catch (parseErr) {
    const preview = serverArgsEnv.length > MAX_ENV_VAR_PREVIEW_LENGTH ? serverArgsEnv.slice(0, MAX_ENV_VAR_PREVIEW_LENGTH) + "…" : serverArgsEnv;
    logger(`copilot-sdk driver mode: failed to parse GH_AW_COPILOT_SDK_SERVER_ARGS: ${parseErr} (value: ${preview})`);
    return [];
  }
}

/**
 * Build a compact fallback prompt that asks the agent to read instructions from disk.