export interface BuildStepFailureInput {
    label: string;
    exitCode: number;
    signal: string | null;
    stderrTail: string;
    template?: string;
    app?: string;
}
/**
 * The last lines of a failed child's stderr, safe to send off the machine:
 * colour codes stripped, the user's home directory replaced, URL credentials and
 * secret env assignments redacted before the tail is cut (a secret split by the
 * cut must not survive as a fragment), whole lines only. Other credential-looking
 * values are redacted downstream by the telemetry writer.
 */
export declare function scrubStderrTail(stderr: string): string;
/**
 * The error and context for a build step that exited non-zero. The message
 * names only the step: the app or template is a tag, so one failing step is one
 * issue instead of one issue per app (and a private app name never lands in an
 * issue title).
 */
export declare function buildStepFailureReport(input: BuildStepFailureInput): {
    error: Error;
    tags: Record<string, string>;
    extra: Record<string, unknown>;
};