export declare const SECRET_VARIABLE_NAME_MAX_CHARS = 128;
export declare const SECRET_VARIABLE_NAME_PATTERN = "^[A-Za-z_][A-Za-z0-9_]*$";
export declare const MAX_DOTENV_VARIABLES = 64;
export declare const MAX_DOTENV_VALUE_BYTES: number;
export declare const MAX_DOTENV_DOCUMENT_BYTES: number;
export declare class SecretDotenvError extends Error {
    readonly line?: number;
    constructor(message: string, line?: number);
}
export interface ParsedDotenvVariable {
    name: string;
    value: string;
}
export interface ParsedDotenvDocument {
    document: string;
    variables: ParsedDotenvVariable[];
}
export declare function validateDotenvVariableName(name: string): string;
export declare function validateDotenvValue(value: string): string;
/**
 * Parse the practical dotenv surface Pi accepts for provider-backed credential profiles: comments, blank lines, optional `export`,
 * unquoted values, and single/double/backtick quoted values (including multiline quoted values).
 * Error messages contain only a line number and grammar reason, never the rejected value.
 */
export declare function parseDotenvDocument(input: string): ParsedDotenvDocument;
export declare function formatDotenvVariables(variables: readonly ParsedDotenvVariable[]): string;
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