import type { WorkspaceUnit } from '@opensip-cli/core';
/**
 * Walk <rootDir>/packages/** for directories containing tsconfig.json.
 * Each match becomes a WorkspaceUnit. Behavior matches the legacy
 * `discoverWorkspacePackages` in graph's scope.ts which this replaces.
 *
 * Returns absolute paths, sorted lexicographically.
 *
 * The unit `id` is the unit's path RELATIVE to <rootDir>/packages, in POSIX
 * form (e.g. `fitness/engine`, `graph/engine`, `core`). It must be unique and
 * stable: a bare `basename(dir)` collapses nested packages that share a leaf
 * name (this monorepo has `fitness/engine`, `graph/engine`, and
 * `simulation/engine` — three distinct packages all named `engine`). The id is
 * the shard id (graph's per-shard fragment-cache PRIMARY KEY), so a collision
 * silently overwrites cache rows and breaks build determinism. The
 * root-relative path restores a 1:1 id↔unit mapping.
 */
export declare function discoverTypescriptWorkspaceUnits(rootDir: string): Promise<readonly WorkspaceUnit[]>;
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