/**
 * Shared value-parsers for Commander option declarations.
 */
import type { AuthMethod, QueryEngine } from '../types.js';
/**
 * Commander invokes the option `parser` as `(value, previous)`, so a bare
 * `parseInt` reference would receive the previous value as its radix and
 * silently return NaN. Use this wrapper everywhere a numeric option is
 * declared. The literal `10` is the decimal radix.
 */
export declare function parseIntArg(value: string): number;
/**
 * Float counterpart to {@link parseIntArg} for numeric options that accept a
 * fractional value (e.g. a sub-1 messages-per-second sampler rate).
 */
export declare function parseFloatArg(value: string): number;
/** Validate an http(s) URL option/env var so a bad value fails fast. */
export declare function parseUrl(url: string): string;
/** Parse an env URL and include the variable name in validation errors. */
export declare function parseEnvUrl(envVarName: string, url: string): string;
/** Parse an auth method; returns undefined when unset so the caller can default. */
export declare function parseAuthMethod(method?: string): AuthMethod | undefined;
/** Parse a query engine; returns undefined when unset so the caller can default. */
export declare function parseQueryEngine(engine?: string): QueryEngine | undefined;
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