SRCL: React components and CLI templates with terminal styling

What SRCL solves for React interface builders

SRCL addresses a specific visual problem: building interfaces that resemble command-line terminals without recreating every spacing rule, component source file, and global style from scratch. It is aimed at developers working on web applications, desktop applications, and static websites. The repository description calls it a component and style repository rather than a conventional library with a documented public API, so the intended workflow appears to involve copying implementations into a project.

The visual system emphasizes monospace character spacing and line heights. That focus matters for terminal interfaces because a small spacing change can break alignment across rows, labels, borders, or controls. The `components/`, `modules/`, `common/`, and global CSS entries indicate that the visual work is spread across reusable components, supporting modules, shared code, and styles rather than isolated snippets.

SRCL is also intended for developers studying interfaces rather than only consuming them. The repository publishes component source and documentation at stable URLs, including a canonical component catalog and raw source files. This makes it possible to inspect props, theming tokens, and related CLI primitives without cloning the repository. The online demo at `https://sacred.computer` provides a separate way to review the intended presentation.

How the React and terminal implementations share conventions

The repository includes more than React screens. Under `scripts/cli/lib`, it contains a small CLI framework described as zero-dependency. Its palette is read from `scripts/cli/colors.json`, which establishes a stated connection between the terminal surface and the React surface. The React application therefore appears to be the primary visual implementation, while the CLI framework applies related terminal conventions outside the browser.

Two reference templates render the same data in different runtimes. `scripts/cli/templates/template.ts` is executed with `tsx`, while `scripts/python/templates/template.py` runs against a snake_case Python mirror under `scripts/python/sacred_cli`. Both templates use the terminal alt screen buffer and raw-mode keyboard input. These are terminal-control details rather than ordinary application state management, so adopting them requires a terminal environment that supports those modes.

The repository also includes four porting guides under `skills/`. Their names distinguish porting a terminal interface to TypeScript, porting one to Python, porting a terminal interface to React, and porting a sacred surface into a React codebase described as hostile. This separation is useful because it treats visual consistency as an implementation task with runtime constraints, not simply as a matter of matching colors.

Running SRCL locally and opening the kitchen sink

The README gives a minimal local setup. Node.js 18 or newer is required by the `engines` field in `package.json`. From the repository root, install the declared dependencies and start the Next.js development server with the following commands:

npm install
npm run dev

The `dev` script runs `next -p 10000`, so the development server listens on port 10000. Open the following URL in a browser:

http://localhost:10000

The README identifies the hosted version as the live demo, while the local command gives you the repository version for inspection and development. The repository includes a `build` script and a `start` script, but the README does not document a deployment procedure beyond stating that Vercel is used for hosting. The available source layout suggests that the page is a Next.js application with components assembled from `components/` and other local directories.

A first useful review is to search the running page for `CLI TEMPLATE EXAMPLE`. The README says that the same template is mounted as a React component on the kitchen sink page. Seeing that example beside the CLI commands is more informative than treating SRCL as a set of isolated styling snippets.

SRCL's CLI templates and verification scripts

The repository exposes two reference terminal screens through npm scripts:

npm run cli:typescript
npm run cli:python

The first command runs `scripts/cli/templates/template.ts` through `tsx`. The second runs `scripts/python/templates/template.py` with `python3`. Both screens use the alt screen buffer and raw keyboard mode. Exit either screen with `Esc` or `Ctrl-C`, as stated in the README. This behavior is a concrete limitation for remote sessions, terminals without raw-mode support, and workflows that expect normal shell history or copy behavior.

The documented verification command is:

npm test

According to the README, this runs three gates: a TypeScript type check, the Vitest suite, and a Python unittest suite. The Python runner includes a parity test between the JavaScript and Python CLI runtimes. If `python3` is not available on `PATH`, the Python suite skips with a warning. That skip is important when judging whether the full cross-runtime check actually executed. Individual suites can be selected with:

npm run test:js
npm run test:python

The README does not give test coverage percentages, supported terminal matrices, or a release process, so those points cannot be inferred from the repository description.

Source distribution, documentation access, and upgrade cost

SRCL's documentation URLs are one of its clearest operational features. The README points to `https://sacred.computer/llms.txt` as an index grouped into repository conventions, Simulacrum, skills, and component source. It also points to `https://sacred.computer/llms-full.txt` for concatenated documentation, and to `https://sacred.computer/llm/AGENTS.md` for root conventions. The component catalog is published at `https://sacred.computer/llm/components/AGENTS.md`, while individual sources follow a URL pattern such as `https://sacred.computer/llm/components/Card.tsx.txt`.

This publication model reduces the need to clone the repository merely to read component documentation. However, the README does not describe an npm import path, package export map, semver policy, or compatibility matrix for consuming SRCL as a dependency. The absence of GitHub releases is also worth noting. The package metadata lists version `2.0.9`, but there are no GitHub releases to use as release notes.

The license is MIT. That permits use and modification under the license's terms, but it does not by itself guarantee compatibility with an existing application's design tokens, accessibility requirements, or browser targets. Upgrade cost depends on whether you copy components or maintain a dependency relationship. The repository has no release history, and its last push was on 2026-10-07, so changes should be inspected directly rather than inferred from a published changelog.

Where SRCL is the wrong choice

SRCL is a poor fit if you need a conventional installable component package with documented imports, versioned releases, compatibility guarantees, or a maintained public API. The README presents a source repository and a demo site, while `package.json` identifies the application package as `srcl` and does not document a component export surface. A team expecting `import { ... } from 'srcl'` cannot confirm that pattern from the available documentation.

It is also unsuitable as an unmodified terminal runtime. The CLI templates require raw keyboard mode and the alt screen buffer, which can conflict with some remote terminals, screen readers, CI environments, or embedded shells. The Python suite can skip when `python3` is absent, so the full test command does not guarantee that both runtimes were checked on every machine.

A real alternative is to build on a mature application component library or an existing design system with documented packages, accessibility behavior, and release support, then apply a terminal visual theme through application-specific CSS. That approach gives fewer ready-made terminal surfaces but provides a clearer dependency boundary. SRCL is the better choice when source inspection and copying precise terminal-oriented implementations matter more than package governance.

Editorial conclusion

Adopt SRCL when you want to copy and adapt terminal-style React components or study its paired CLI framework. Do not treat it as a packaged design system without checking its component APIs and packaging model first. Before integration, inspect the relevant source files, theming tokens, accessibility behavior, and the cost of adapting copied code to your own React application.

Frequently asked questions

Official sources

1. internet-development/www-sacred on GitHub
2. Issues
3. License: MIT
4. Project website
5. README