/**
 * Tiny line-oriented diff helper used to populate `--dry-run` previews.
 *
 * This is not a full Myers diff — it's the cheapest output that still lets a user see what
 * `openlore install --dry-run` would do without us shelling out to `diff(1)`. The result is
 * meant for human eyeballing, not machine consumption.
 *
 * PRIVACY IS THE DESIGN CONSTRAINT HERE, not brevity (change: fix-install-never-blocks-by-default).
 * These previews render the user's `~/.claude.json` and `~/.claude/settings.json`, which routinely
 * hold an `signedInAccount` block and per-MCP-server `env` blocks with provider API keys. The previous
 * implementation trimmed only the common PREFIX and SUFFIX, so one changed line near the top and
 * one near the bottom made the whole untouched middle of the file "the changed region" — a
 * re-ordered `mcpServers.openlore` key was enough to print ~11 KB of unrelated private
 * configuration, twice (once as `-`, once as `+`), on a command that looks read-only.
 *
 * Two rules follow, and `diff.test.ts` pins both:
 *
 * 1. Only the ACTUAL changed hunks are printed, each inside a bounded context window. An
 *    untouched key far from any change is never rendered, whatever its position in the file.
 * 2. Every line that is rendered goes through the repository's own secret redaction first, so a
 *    credential that genuinely sits inside a changed hunk is still never echoed.
 */
export declare function previewCreate(filePath: string, content: string): string;
export declare function previewDiff(filePath: string, before: string, after: string): string;
//# sourceMappingURL=diff.d.ts.map