/**
 * Environment variable resolver for rolebox.
 *
 * Replaces `{env:VARIABLE_NAME}` patterns in strings with the corresponding
 * environment variable value. If the variable is not set, the original pattern
 * is preserved and a warning is logged.
 */
import type { Logger } from "tslog";
import type { ILogObj } from "tslog";
/** @internal Test seam — swap the module-level logger for a mock. */
export declare function __setLoggerForTest(mockLog: Logger<ILogObj>): void;
/**
 * Replace `{env:VARIABLE_NAME}` placeholders with actual environment values.
 *
 * @param value - The string potentially containing env var placeholders.
 * @returns The resolved string with environment variables substituted.
 *          Unresolvable placeholders are left as-is.
 */
export declare function resolveEnvVars(value: string): string;
/**
 * Deep-resolve all string values in an object/array tree.
 *
 * Recursively walks through nested objects and arrays, resolving any
 * `{env:VARIABLE_NAME}` patterns found in string values.
 *
 * @param obj - The value to resolve (string, object, array, or primitive).
 * @returns A deeply resolved copy of the input.
 */
export declare function resolveEnvVarsDeep(obj: unknown): unknown;
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