Rust-native package map customConditions for repo-local targets

[jununfly]

This was generated by AI during triage.

Parent

• Roadmap plan: docs/plans/2026-06-22-rust-native-typescript-module-resolution-roadmap.md
• Package map condition plan: docs/plans/2026-06-22-rust-native-package-map-condition-set-completion.md
• Roadmap node: 1-4-3. condition set handling for repo-local source

What to build

Read compilerOptions.customConditions from the Rust resolved TypeScript config model and apply those configured conditions to repo-local package exports / imports condition selection. The custom conditions should participate in the shared condition helper after types, import-kind/runtime condition, and node, and before default.

This must not expand node_modules, must not add a TypeScript compiler runtime dependency, and must not claim support for package-manager-specific condition semantics beyond the configured strings.

Acceptance criteria

• The Rust resolved config model captures compilerOptions.customConditions from direct and inherited repo-local configs.
• Package exports repo-local resolution can select a target through a configured custom condition.
• Package imports repo-local resolution can select a target through a configured custom condition.
• Diagnostics/profile data includes custom conditions in the effective condition set when configured.
• Deterministic Rust fixtures cover direct config, inherited config, and fallback to default when custom conditions do not match.
• No node_modules graph expansion or production TypeScript compiler API dependency is introduced.

Blocked by

• Rust-native package map shared condition selection helper #451

[jununfly]

This was generated by AI during triage.

Closing as implemented. Rust-native package and now honor repo-local after standard conditions and before , with deterministic fixture coverage.

Evidence:
running 63 tests
test tests::emits_machine_readable_progress_json ... ok
test tests::escapes_error_messages_as_json_strings ... ok
test tests::graph_work_profile_parse_rejects_unknown_profiles ... ok
test tests::emits_machine_readable_result_json ... ok
test tests::emits_structured_rust_owned_parse_gap_errors ... ok
test tests::caps_import_fallback_samples_but_keeps_full_counts ... ok
test tests::normalization_borrows_sources_when_no_rewrite_is_needed ... ok
test tests::normalization_allocates_once_when_typescript_rewrites_are_needed ... ok
test tests::result_json_emits_candidate_declaration_diagnostics ... ok
test tests::result_json_emits_module_resolution_shadow_diagnostics ... ok
test tests::project_lock_rejects_a_second_writer ... ok
test tests::index_connection_uses_wal_and_normal_synchronous ... ok
test tests::memory_final_flush_sqlite_mode_writes_a_readable_index ... ok
test tests::final_flush_sqlite_mode_leaves_active_index_in_wal_mode ... ok
test tests::final_flush_sqlite_mode_preserves_previous_good_index_when_staging_fails ... ok
test tests::rust_config_extends_unsupported_package_and_cycles_fail_closed ... ok
test tests::matched_ts_js_profile_controls_cost_relevant_graph_work_before_write ... ok
test tests::candidate_producer_returns_exact_name_and_presence_from_sqlite ... ok
test tests::candidate_producer_returns_lower_name_candidates_from_sqlite ... ok
test tests::rust_guarded_file_import_edge_writes_record_write_and_skip_decisions ... ok
test tests::candidate_producer_returns_qualified_name_and_file_nodes_from_sqlite ... ok
test tests::rust_index_accepts_typescript_contextual_keyword_identifiers ... ok
test tests::rust_index_accepts_typescript_import_type_queries ... ok
test tests::rust_config_extends_child_overrides_paths_and_explicit_mode ... ok
test tests::rust_index_leaves_parse_walker_diagnostics_off_by_default ... ok
test tests::rust_index_extracts_mixed_languages_with_reused_parsers ... ok
test tests::rust_index_bulk_transaction_keeps_parse_gap_files_and_continues ... ok
test tests::rust_name_matcher_reports_decision_oriented_fallback_reason ... ok
test tests::rust_name_matcher_resolves_exact_candidate_facts ... ok
test tests::rust_name_matcher_reports_fallback_for_unhandled_reference ... ok
test tests::rust_name_matcher_resolves_function_member_candidate_facts ... ok
test tests::rust_name_matcher_resolves_method_candidate_facts ... ok
test tests::rust_name_matcher_resolves_qualified_candidate_facts ... ok
test tests::rust_index_emits_module_resolution_shadow_profile_without_changing_graph_contract ... ok
test tests::rust_module_resolution_classic_fails_closed_for_package_maps ... ok
test tests::rust_index_skips_anonymous_leaf_checks_without_losing_js_graph_facts ... ok
test tests::rust_index_preserves_js_ts_import_export_binding_refs_for_text_reuse ... ok
test tests::rust_loads_repo_local_extends_with_declaring_config_path_basis ... ok
test tests::rust_package_exports_use_require_condition_for_commonjs_require ... ok
test tests::rust_package_exports_blocked_overdeep_and_array_shapes_fail_closed ... ok
test tests::rust_package_exports_missing_keys_fallback_but_unsupported_shapes_fail_closed ... ok
test tests::rust_package_imports_fail_closed_for_blocked_unsupported_and_escaping_targets ... ok
test tests::rust_package_self_name_failures_are_diagnostic_only ... ok
test tests::rust_package_maps_use_custom_conditions_after_standard_conditions ... ok
test tests::rust_pairs_explicit_js_runtime_extensions_from_package_map_targets ... ok
test tests::rust_profile_classifies_typescript_overload_implementation_candidates ... ok
test tests::rust_profile_keeps_no_go_declaration_metadata_out_of_implementation ... ok
test tests::rust_profile_populates_parse_extraction_sub_buckets ... ok
test tests::rust_pairs_explicit_js_runtime_extensions_to_ts_source_targets ... ok
test tests::rust_resolves_inherited_root_dirs_with_declaring_config_path_basis ... ok
test tests::rust_resolves_package_exports_condition_objects_and_declaration_targets ... ok
test tests::rust_resolves_package_exports_nested_conditions_up_to_two_levels ... ok
test tests::rust_resolves_package_exports_patterns_with_specificity_priority ... ok
test tests::rust_resolves_js_ts_alias_and_workspace_file_import_targets ... ok
test tests::rust_workspace_package_loader_handles_manifests_and_longest_match ... ok
test tests::rust_resolves_package_self_name_root_and_subpath_import_targets ... ok
test tests::rust_resolves_package_imports_from_nearest_package_boundary ... ok
test tests::rust_resolves_root_dirs_relative_import_targets_across_sibling_roots ... ok
test tests::rust_root_dirs_reports_target_not_found_and_config_out_of_scope ... ok
test tests::rust_resolves_simple_package_exports_for_self_name_import_targets ... ok
test tests::rust_index_reuses_local_exact_candidate_lookups_for_repeated_calls ... ok
test tests::rust_index_keeps_sqlite_writes_batched_for_symbol_heavy_projects ... ok
test tests::rust_index_bulk_write_rebuilds_search_index_for_symbol_heavy_projects ... ok

test result: ok. 63 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 2.32s

running 0 tests

test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s

running 0 tests

test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s; closeout recorded in .

[jununfly]

This was generated by AI during triage.

Clean closeout note: issue is implemented. Repo-local package exports and imports now honor compilerOptions customConditions after standard conditions and before default. Evidence is in docs/benchmarks/2026-06-22-package-map-condition-set-closeout.md.