import type { SchemaAST } from 'effect';
export interface UnrepresentableField {
    readonly path: string;
    readonly reason: 'transformation' | 'filter' | 'declaration';
}
/**
 * A field is representable when a Snapshot can capture it and restore a live
 * schema from that capture with nothing lost. ESchema composition (one
 * ESchema nested inside another) is restored by resolving the reference, not
 * by reviving the wrapping transform/declaration. UniqueSymbol is a known
 * unchecked edge case: capture supports Symbol.for(...) but fails for a local
 * Symbol(...).
 */
export declare function findUnrepresentableField(ast: SchemaAST.AST): UnrepresentableField | undefined;
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