import type { PromptSegment } from "../types.js";
import type { ValidationResult } from "./types.js";
/**
 * The interpolations in a string literal's segments, as source text
 * (`generateExpression` keeps string quotes, so `format("x")` and
 * `format(x)` stay distinct), sorted so two lists compare as multisets.
 */
export declare function interpolationsOf(segments: PromptSegment[]): string[];
/**
 * Reads the plain text a mutator model returns for a free-text target.
 * Every `${...}` in the text is an interpolation; there is no way to write
 * a literal `${` in a replacement, and discovery warns when a target's
 * text contains one. Everything else, including quotes, backslashes, and
 * newlines, is text.
 */
export declare function parseReplacementText(text: string): {
    ok: true;
    segments: PromptSegment[];
} | {
    ok: false;
    reason: string;
};
/**
 * A replacement must keep the target's interpolations: the same
 * placeholders, the same number of times, and no new ones.
 */
export declare function compareInterpolations(current: string[], proposed: string[]): ValidationResult;