/**
 * Single source of truth for database provider → SQL dialect resolution.
 *
 * Both the compiler (`apps/compiler/src/transforms/dialect.ts`) and the CLI
 * (`quickback schema check|sync`) resolve dialects through this module. Keeping
 * one definition here is what prevents the class of bug where the two sides
 * disagree and `schema sync` writes wrong-dialect declarations into authored
 * source (issue #213).
 */
export type ProviderDialect = 'sqlite' | 'postgres' | 'mysql';
export declare const SQLITE_PROVIDERS: readonly ["cloudflare-d1", "better-sqlite3", "bun-sqlite", "libsql", "turso"];
export declare const POSTGRES_PROVIDERS: readonly ["supabase", "neon", "vercel-postgres", "postgres", "postgresql"];
export declare const MYSQL_PROVIDERS: readonly ["planetscale", "mysql", "mysql2"];
/**
 * Resolve a database provider name to its SQL dialect family.
 *
 * Returns `undefined` for unknown or missing provider names so each caller
 * chooses its own fallback explicitly (the compiler defaults to sqlite; the
 * CLI does the same but refuses dialects it cannot emit).
 */
export declare function resolveProviderDialect(providerName: string | undefined): ProviderDialect | undefined;
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