/**
 * Environment variable detection from repository files.
 *
 * Pure detection module — scans .env files, docker-compose.yml,
 * Spring config files, and infers framework-specific env vars.
 *
 * TODO: Extract into a separate detection task within analyze-repo
 * so env detection runs as an independent step (see PR #630 discussion).
 */
import { z } from 'zod';
export declare const detectedEnvVarSchema: z.ZodObject<{
    name: z.ZodString;
    classification: z.ZodEnum<["secret", "database", "config"]>;
    source: z.ZodString;
    required: z.ZodBoolean;
    defaultValue: z.ZodOptional<z.ZodString>;
}, "strip", z.ZodTypeAny, {
    name: string;
    source: string;
    required: boolean;
    classification: "config" | "database" | "secret";
    defaultValue?: string | undefined;
}, {
    name: string;
    source: string;
    required: boolean;
    classification: "config" | "database" | "secret";
    defaultValue?: string | undefined;
}>;
export type DetectedEnvVar = z.infer<typeof detectedEnvVarSchema>;
/**
 * Classify an environment variable name as secret, database, or config.
 *
 * - SECRET: contains PASSWORD, TOKEN, KEY, SECRET, CREDENTIAL, or is a DATABASE_URL/DSN/URI
 * - DATABASE: starts with DB_, REDIS_, MONGO_, MYSQL_, PG_, POSTGRES_, or MSSQL_
 * - CONFIG: everything else
 */
export declare function classifyEnvVar(name: string): 'secret' | 'database' | 'config';
/**
 * Partition env vars into config, database, and secret name lists in a single pass.
 * Database vars (DB_HOST, DB_PORT, etc.) are non-secret connection details and
 * belong in ConfigMaps, not Secrets.
 */
export declare function partitionEnvVarNames(vars: DetectedEnvVar[]): {
    configNames: string[];
    databaseNames: string[];
    secretNames: string[];
};
/**
 * Parse KEY=value lines from .env-style files.
 * Skips comments and blank lines.
 * A var is required if it has no default (no value after =, or no = at all).
 */
export declare function detectEnvVarsFromEnvFile(content: string, source: string): DetectedEnvVar[];
/**
 * Parse environment variables from docker-compose.yml content.
 * Handles both list format (`- VAR=val`) and map format (`VAR: val`).
 */
export declare function detectEnvVarsFromDockerCompose(content: string, source?: string): {
    vars: DetectedEnvVar[];
    warning?: string;
};
/**
 * Extract ${VAR_NAME:default} placeholders from Spring application.properties/yml content.
 * Only captures env-var-shaped names (uppercase with underscores); rejects dotted
 * Spring property references like ${spring.profiles.active}.
 */
export declare function detectEnvVarsFromSpringConfig(content: string, source?: string): DetectedEnvVar[];
/**
 * Infer common framework environment variables from language/framework.
 */
export declare function inferFrameworkEnvVars(language: string, framework?: string): DetectedEnvVar[];
/**
 * Deduplicate env vars by name.
 * Prefers explicit sources over 'framework-inferred'.
 * Keeps the first default value encountered.
 */
export declare function deduplicateEnvVars(vars: DetectedEnvVar[]): DetectedEnvVar[];
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