/**
 * `npm install` already runs with `--json` so a failure can be classified from
 * the structured error envelope. On the SUCCESS path that same JSON was passed
 * straight to `logger.info(stdout)` as the log MESSAGE, which is why Datadog
 * shows an empty line after "Package installation completed successfully" and
 * the counts never reached anyone.
 *
 * Those counts are the only evidence of what an install actually did. Deciding
 * whether to persist a node_modules delta, and whether the trade is worth it,
 * needs to distinguish "added 8 packages" from "added nothing and still spent
 * 52 seconds".
 */
export type NpmInstallSummary = {
    added: number;
    removed: number;
    changed: number;
    audited: number;
};
/**
 * Parse npm's `--json` install summary.
 *
 * Returns null when there is nothing parseable — no output, output that is
 * not a JSON object, or a JSON object that carries none of npm's summary keys
 * (the install may have run under yarn/pnpm, whose JSON output would otherwise
 * masquerade as a confidently-measured no-op npm install). Callers should fall
 * back to logging the raw text so an unrecognized shape is still recoverable
 * from logs.
 */
export declare function parseNpmInstallSummary(stdout: string): NpmInstallSummary | null;
//# sourceMappingURL=npm-install-summary.d.mts.map