/**
 * Shared whitelist constants (spec: "AST node whitelist (derived from
 * necessity)" and "Contextual rules for MemberExpression and CallExpression").
 * The node-type dispatch itself lives in compile.ts; this module is just the
 * small, auditable set of names the contextual rules check against.
 */
/** Reserved property keys blocked on any MemberExpression, regardless of root. */
export declare const BLOCKED_KEYS: ReadonlySet<string>;
/**
 * Bare identifiers allowed as VALUES (not necessarily as further member-access
 * roots — see MEMBER_ROOT_IDENTIFIERS below, which is stricter). The datum
 * parameter name itself is added by the caller since it's configurable.
 */
export declare const SAFE_VALUE_IDENTIFIERS: ReadonlySet<string>;
/**
 * Identifiers allowed as the ultimate root of a MemberExpression chain
 * (`d.field`, `Math.sqrt`). Deliberately narrower than SAFE_VALUE_IDENTIFIERS —
 * no documented pattern needs `Number.foo`/`String.foo`/`Boolean.foo` member
 * access, only their bare call forms (`Number(x)`), so member-rooting is
 * restricted to the datum and `Math`.
 */
export declare const MEMBER_ROOT_IDENTIFIERS: ReadonlySet<string>;
/** Bare-identifier CallExpression callees allowed beyond the registered scale/clamp/lerp/colorRamp builtins. */
export declare const CONSTRUCTOR_STYLE_CALLS: ReadonlySet<string>;
/** Unary operators allowed (delete/void excluded per spec). */
export declare const ALLOWED_UNARY_OPERATORS: ReadonlySet<string>;
/** Binary operators allowed (in/instanceof excluded per spec). */
export declare function isAllowedBinaryOperator(op: string): boolean;