import type { ArithResult, ElementOps } from './types.ts';
/**
 * Evaluate a bash arithmetic expression.
 *
 * Implements bash's arithmetic grammar over 64-bit wrapping integers
 * (BigInt): comma sequences, assignment operators, the ternary,
 * short-circuit `&&`/`||`, bitwise/relational/shift/additive/
 * multiplicative operators, right-associative `**`, unary operators, and
 * prefix/postfix `++`/`--`. BigInt division/modulo already truncate
 * toward zero like C. A variable whose value is not a plain integer
 * literal is evaluated recursively like bash (`x="1+2"; $((x))` is 3).
 * `base#value` literals are not supported. Element references (`a[i]`,
 * `m[key]`) resolve and assign through `elements`; with null every
 * subscript is a syntax error, which is what an evaluation with no
 * session behind it can honestly say. Returns the value plus the scalar
 * and element assignments made, for the caller to apply to the session.
 * Throws ArithError on syntax errors, division by zero, or a negative
 * exponent.
 */
export declare function evaluateArith(expr: string, env: Readonly<Record<string, string>>, depth?: number, elements?: ElementOps | null): ArithResult;
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