import { DotenvVariable } from "./dotenv_variable";
export interface DotenvParserOptions {
    /**
     * Separator used to tokenize the left side of the key value pair.
     */
    separatorLeft?: string;
    /**
     * Min number of tokens after parsing. Used to valid the format.
     */
    minTokensLeft?: number;
    /**
     * Max number of tokens after parsing. Used to valid the format.
     */
    maxTokensLeft?: number;
    /**
     * Separator used to tokenize the right side of the key value pair.
     */
    separatorRight?: string;
    /**
     * Min number of tokens after parsing. Used to valid the format.
     */
    minTokensRight?: number;
    /**
     * Max number of tokens after parsing. Used to valid the format.
     */
    maxTokensRight?: number;
    /**
     * Current only supports a prefix to find dotenv variables.
     * @example UNENCRYPTED__
     * @example CIPHERED__
     * @example DOTENV_ENC_KEY__
     */
    cryptoKeyNamePrefix?: string;
}
export interface TokenizeResult {
    isValid: boolean;
    tokens: string[];
}
/**
 * Base class for the parsing of the dotenv variables
 */
export declare abstract class DotenvParserBase {
    /**
     * All environment variables regardless of any errors
     */
    readonly variablesAll: DotenvVariable[];
    /**
     * Environment variables erroneously using a reserved word for the crypto key name
     */
    readonly variablesUsingReservedWord: DotenvVariable[];
    /**
     * List of invalid variables. Includes values using reserved words.
     */
    readonly variableInvalid: DotenvVariable[];
    /**
     * Environment variables without any errors
     */
    readonly variables: DotenvVariable[];
    readonly separatorLeft: string;
    readonly minTokensLeft: number;
    readonly maxTokensLeft: number;
    readonly separatorRight: string;
    readonly minTokensRight: number;
    readonly maxTokensRight: number;
    readonly cryptoKeyNamePrefix: string;
    constructor(options: DotenvParserOptions);
    protected tokenizeLeftSide(leftSide: string): TokenizeResult | undefined;
    protected tokenizeRightSide(rightSide: string): TokenizeResult;
    protected abstract tokenize(leftSide: string, rightSide: string): DotenvVariable | undefined;
    parseObject(env: object): void;
}
export declare class DotenvParserCryptoKey extends DotenvParserBase {
    constructor();
    protected tokenize(leftSide: string, rightSide: string): DotenvVariable | undefined;
}
export declare class DotenvParserPlainTextVariable extends DotenvParserBase {
    constructor();
    tokenize(leftSide: string, rightSide: string): DotenvVariable | undefined;
}
export declare class DotenvParserCipheredVariable extends DotenvParserBase {
    constructor();
    tokenize(leftSide: string, rightSide: string): DotenvVariable | undefined;
}
export declare class DotenvParserTestConstructor extends DotenvParserBase {
    constructor(options: DotenvParserOptions);
    tokenize(_leftSide: string, _rightSide: string): DotenvVariable | undefined;
}