import { type Policy } from '@cloud-copilot/iam-policy';
import { StringBuffer } from '../util/StringBuffer.js';
import { type Converter } from './converter.js';
export declare class CloudFormationConverter implements Converter {
    convert(policy: Policy, sb: StringBuffer): void;
    /**
     * Recursively prints the given `value` (object, array, or scalar) as YAML lines
     * using StringBuffer's pushLine/pushInline.
     */
    private writeYamlValue;
    private pushObjectValue;
    /**
     * Return true if `value` is null or a primitive (string/number/boolean).
     */
    private isPrimitiveOrNull;
    /**
     * Convert primitive to a YAML-friendly string (quoted if it's a string).
     */
    private stringifyScalar;
    /**
     * Stringify a key for YAML output. If it's a valid YAML key, return as-is.
     *
     * @param key the key to convert to a YAML key
     * @returns the key as a valid YAML key
     */
    private yamlKey;
}
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