feat: Q1 2026 P0 features — new tools, enhanced UI, code gen, and test coverage#18
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feat: Q1 2026 P0 features — new tools, enhanced UI, code gen, and test coverage#18
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…t coverage New tools: - Regex Tester: real-time match highlighting, capture groups, common pattern presets - Lorem Ipsum Generator: paragraphs/sentences/words modes with configurable options - Subnet Calculator: IPv4/IPv6 with binary visualization and CIDR breakdown Enhancements: - Data Diff Tool: rebuilt UI with side-by-side and inline diff views, format auto-detection - Architecture Diagram: promoted from draft to production (removed isDraft flag) - Code generation: added 7 new languages (Dart, Elixir, Haskell, Julia, Lua, Perl, Scala) Quality: - Test coverage increased from ~25% to 52%+ (719 tests across 26 files) - Added 15 new test files covering formatters, encoders, crypto, generators, text, minifiers, converters, validators, comparators, SQL, processors, and workbenches - Excluded .claude worktree paths from vitest config https://claude.ai/code/session_019QTNAzgbA8UV5qUwwaC6bs
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Pull request overview
This PR delivers Q1 2026 P0 tool additions and UX upgrades across the tool registry, API client code generation, and the Data Diff UI, alongside a large set of new unit tests and a Vitest config tweak.
Changes:
- Added new tools (Regex Tester, Lorem Ipsum Generator, Subnet Calculator) and registered them in the tool registry/router.
- Rebuilt/enhanced Data Diff UI (auto-detection, sample loading, exports, options UX, and input panels).
- Expanded API client code generation with 7 additional languages and significantly increased unit test coverage.
Reviewed changes
Copilot reviewed 34 out of 34 changed files in this pull request and generated 1 comment.
Show a summary per file
| File | Description |
|---|---|
| vitest.config.ts | Excludes .claude/** paths from Vitest runs. |
| tests/unit/lib/workbenches.test.ts | Adds unit tests for OpenAPI/Proto contract workbench routing and linting. |
| tests/unit/lib/validators.test.ts | Adds unit tests for JSON/XML validators. |
| tests/unit/lib/text.test.ts | Adds unit tests for text utilities (case transforms, whitespace removal, etc.). |
| tests/unit/lib/sql.test.ts | Adds unit tests for SQL formatting/linting/explain parsing processors. |
| tests/unit/lib/shared.test.ts | Adds unit tests for shared validation helpers and size-limit constants. |
| tests/unit/lib/processors.test.ts | Adds unit tests for rate-limit backoff processor output/validation paths. |
| tests/unit/lib/network.test.ts | Adds unit tests for DoH response formatting. |
| tests/unit/lib/minifiers.test.ts | Adds unit tests for JSON/CSS/JS/HTML/XML minifiers. |
| tests/unit/lib/json-diff.test.ts | Adds unit tests for JSON structural diff behavior and options. |
| tests/unit/lib/generators.test.ts | Adds unit tests for UUID and epoch/date generators. |
| tests/unit/lib/formatters.test.ts | Adds unit tests for JSON/XML/HTML/CSS formatters (incl. security checks). |
| tests/unit/lib/encoders.test.ts | Adds unit tests for URL/Base64 and escaping/unescaping helpers. |
| tests/unit/lib/crypto.test.ts | Adds unit tests for hashes and JWT decoding. |
| tests/unit/lib/converters.test.ts | Adds unit tests for JSON→CSV conversion. |
| tests/unit/lib/comparators.test.ts | Adds unit tests for diff engine + format detection + dataDiff routing. |
| lib/tools/validators/regex-tester.ts | Implements Regex Tester processing and match extraction logic. |
| lib/tools/validators/index.ts | Exports the new Regex Tester tool entrypoint. |
| lib/tools/network/subnet-calculator.ts | Implements IPv4/IPv6 subnet calculation logic and tool wrapper. |
| lib/tools/network/index.ts | Exports subnet calculator utilities/types from network tools. |
| lib/tools/generators/lorem-ipsum.ts | Implements Lorem Ipsum generation processor and validation. |
| lib/tools/generators/index.ts | Re-exports Lorem Ipsum generator from the generators index. |
| lib/tool-registry.ts | Registers new tools, wires processes, and promotes Architecture Diagram from draft. |
| lib/code-gen-utils.ts | Adds Dart/Elixir/Haskell/Julia/Lua/Perl/Scala code generation targets. |
| components/api-client/CodeGenerator.tsx | Adds the new languages to the Code Generator UI list. |
| app/tools/subnet-calculator.tsx | Adds a dedicated Subnet Calculator UI page. |
| app/tools/lorem-ipsum.tsx | Adds a dedicated Lorem Ipsum Generator UI page. |
| app/tools/data-diff/page.tsx | Enhances Data Diff UX (auto format badge, sample button, exports, shortcuts). |
| app/tools/data-diff/components/OptionsPanel.tsx | Reworks options popover; adds JSON/CSV/text options and active-option badge. |
| app/tools/data-diff/components/InputPanel.tsx | Replaces basic textarea with editor-style panel + line-number gutter. |
| app/tools/data-diff/components/DiffNavigation.tsx | Refines change navigation and export controls in the toolbar. |
| app/tools/[tool]/page.tsx | Adds dynamic routes for new tool pages (regex tester, lorem ipsum, subnet calculator). |
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| id="csv-key-columns" | ||
| placeholder="e.g., id, user_id" | ||
| value={options.csvKeyColumns || ''} | ||
| onChange={(e) => handleChange('csvKeyColumns', e.target.value)} | ||
| value={options.keyColumns ? options.keyColumns.join(', ') : ''} | ||
| onChange={(e) => { | ||
| const val = e.target.value; | ||
| if (val.trim() === '') { | ||
| handleChange('keyColumns', [] as string[]); | ||
| } else { | ||
| handleChange( | ||
| 'keyColumns', | ||
| val | ||
| .split(',') | ||
| .map((s) => s.trim()) | ||
| .filter(Boolean), | ||
| ); | ||
| } | ||
| }} |
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In the CSV options, clearing the “Primary key columns” field sets keyColumns to an empty array. In csv-diff.ts an empty array is truthy, which switches matching to PRIMARY_KEY and can collapse all rows under the same empty key, producing incorrect diffs. When the input is blank, remove keyColumns (set to undefined/delete) instead of [], and consider only enabling PRIMARY_KEY when keyColumns.length > 0.
…ication Security: - Fix incomplete HTML sanitization in lorem-ipsum.tsx (replace /<[^>]*>/g with /[<>]/g to prevent HTML injection via partial tag fragments) Test coverage (147 new tests): - subnet-calculator: 31 tests (IPv4/IPv6, CIDR ranges, class detection, errors) - lorem-ipsum: 29 tests (modes, options, edge cases, validation) - regex-tester: 27 tests (flags, capture groups, invalid patterns, edge cases) - code-gen-utils: 60 tests (7 new languages with method/header/body coverage) Code deduplication: - regex-tester.ts: extract extractMatch() helper (removed ~18 duplicated lines) - code-gen-utils.ts: merge axios cases and PowerShell cases (~30 lines removed) - data-diff/page.tsx: extract createFileUploadHandler() and downloadBlob() (~27 lines removed) https://claude.ai/code/session_019QTNAzgbA8UV5qUwwaC6bs
…, dedup Copilot review: - Fix CSV keyColumns empty array bug in OptionsPanel.tsx — set undefined instead of [] when clearing, preventing false PRIMARY_KEY matching Security fixes: - Reduce regex pattern size limit from 1MB to 10KB (ReDoS mitigation) - Fix PowerShell body escaping: also escape backticks and $ signs - Fix IPv6 ULA address type detection: mask 0xc→0xe to exclude ff::/8 Code duplication reduction: - Extract mapHeaders(), methodHasBody, hasBody, contentType helpers - Replace 27 Object.entries(activeHeaders).map().join() with mapHeaders() - Replace 6 ['POST','PUT','PATCH'].includes(method) with methodHasBody - Net: −128 lines of duplicated patterns in code-gen-utils.ts Test coverage (+12 tests): - 8 new IPv6 address type tests (link-local, ULA, multicast, 6to4, teredo, global unicast, unspecified, compression edge case) - 4 new regex-tester tests (zero-length match at end, pattern size limit, test string size limit, non-string pattern type check) https://claude.ai/code/session_019QTNAzgbA8UV5qUwwaC6bs
SonarCloud configuration (sonar-project.properties): - Exclude test files from CPD (duplication analysis) — test duplication is expected and acceptable (repetitive describe/it patterns) - Configure source/test paths and build artifact exclusions Code deduplication (generators/index.ts): - Extract shared generateNameBasedUUID() for UUID v3/v5 (−28 lines) - Extract withInputValidation() helper for epochToDate/dateToEpoch (−20 lines) https://claude.ai/code/session_019QTNAzgbA8UV5qUwwaC6bs
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New tools:
Enhancements:
Quality:
minifiers, converters, validators, comparators, SQL, processors, and workbenches
https://claude.ai/code/session_019QTNAzgbA8UV5qUwwaC6bs