/**
 * AST-agnostic recognition heuristics + small source helpers shared by both
 * walkers. The crux of B1 (which calls are translation calls) lives here so the
 * TypeScript and Svelte walkers stay thin.
 */
import type { ExtractedKey, KeyUsageSite, UsageScan } from './types.js';
export declare function isFactoryName(name: string): boolean;
export declare function isRenderMethod(name: string): boolean;
export declare function isProbeMethod(name: string): boolean;
export declare function isKeyMethod(name: string): boolean;
/** File-local identifiers bound to a translate function, split render vs probe. */
export interface Bindings {
    render: Set<string>;
    probe: Set<string>;
}
export declare function createBindings(extra?: string[]): Bindings;
export declare function createScan(): UsageScan;
/** Route one call's extracted keys into the scan; an empty extraction is an opaque site. */
export declare function recordKeyCall(scan: UsageScan, extractions: ExtractedKey[], site: KeyUsageSite, isProbe: boolean): void;
/** Combine per-file scans into one. */
export declare function mergeScans(scans: UsageScan[]): UsageScan;
/** A fast 1-based line lookup from a character offset, precomputed once per file. */
export declare function makeLineAt(code: string): (offset: number) => number;
/** The trimmed text of a 1-based line, for report context. */
export declare function makeContextAt(code: string): (line: number) => string;