type Dig = <T, F = T>(expr: T, fallback_expr?: F) => T | F;
/**
 * Macro to convert an expression into a safe-traversal expression.
 *
 * Upon transpilation, converts `dig(a.b.c.d)` -> `(a != null) && (a.b != null) && (a.b.c != null) ? a.b.c.d : <fallback_expr>`.
 *
 * `this` is automatically assumed non-null. eg. `dig(this.a.b)` -> `(this.a != null) ? this.a.b : <fallback_expr>`
 *
 * @deprecated Use "optional chaining" - eg `a?.b?.c` - instead.
 *
 * @param expr
 * @param fallback_expr
 */
declare const _default: Dig;
export default _default;