# Where Are the Source Code Files Located in the Hallmark Repository?

> Discover where Hallmark source code lives in the Nutlope/hallmark repository. Find the main entry point and core logic files easily.

- Repository: [Hassan El Mghari/hallmark](https://github.com/Nutlope/hallmark)
- Tags: how-to-guide
- Published: 2026-07-30

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**TLDR:** The Hallmark repository stores all functional source code under the **`site/`** directory, with the main entry point at [`site/index.html`](https://github.com/Nutlope/hallmark/blob/main/site/index.html) and core logic in [`site/js/main.js`](https://github.com/Nutlope/hallmark/blob/main/site/js/main.js), while content data resides in `skills/hallmark/`.

The Hallmark project by Nutlope is a pure client-side web demo that runs entirely in the browser. Understanding where the source code files are located in the Hallmark repository is essential for developers looking to customize themes, extend functionality, or integrate the component library into their own projects. All executable code lives under the `site/` directory, while the repository root contains build configuration and the `skills/` folder houses the Markdown content that drives the demo.

## Hallmark Repository Source Code in the `site/` Directory

The **`site/`** directory at the repository root contains every file required to render the Hallmark demo and power its interactive features. This is a static site structure with no server-side components.

### HTML Entry Point and Core JavaScript

The primary access point is **[`site/index.html`](https://github.com/Nutlope/hallmark/blob/main/site/index.html)**, which bootstraps the application and loads the core JavaScript engine.

The central logic resides in **[`site/js/main.js`](https://github.com/Nutlope/hallmark/blob/main/site/js/main.js)**. This file implements the theme registry, clipboard utilities, and UI helpers through several critical functions and data structures:

- **`applyTheme(themeName)`**: Switches visual themes by updating `document.documentElement.dataset.theme` and reading from the **`THEMES`** map.
- **`copyFromSource(element)`**: Extracts text from a DOM element and writes it to the clipboard.
- **`attachCopyButtons()`**: Initializes the copy-to-clipboard functionality across the interface.
- **`pickRandomTheme()`**: Returns a random theme name from the available options.
- **Data objects**: **`THEMES`**, **`ARCHETYPES`**, and **`COPY`** define available visual styles, component templates, and per-theme text content.

### Example Pages and Visual Test Fixtures

The **`site/examples/`** directory contains standalone demonstrations of specific themes such as Wayfare, Tally, and Riso. Each subdirectory includes its own HTML, CSS, and occasionally a small application script—such as [`site/examples/tally/app.js`](https://github.com/Nutlope/hallmark/blob/main/site/examples/tally/app.js)—that imports the core Hallmark styles.

Visual regression tests and documentation generation fixtures live in **`site/_tests/`**. These files validate that theme rendering remains consistent across changes.

### Stylesheet Assets

CSS files defining the visual language for each theme are distributed throughout the `site/` structure:
- Root level: `site/*.css` for base styles.
- Example level: `site/examples/*/*.css` for theme-specific overrides.

## Content Data and Configuration Files

Not all source files are executable code. The repository separates logic from content:

### Markdown References in `skills/hallmark/`

The **`skills/hallmark/references/`** directory contains Markdown files that drive the text content shown in the demo. For example, [`skills/hallmark/references/microinteractions.md`](https://github.com/Nutlope/hallmark/blob/main/skills/hallmark/references/microinteractions.md) provides copy data that feeds the **`COPY`** object in [`main.js`](https://github.com/Nutlope/hallmark/blob/main/main.js), but these files are not themselves executable.

### Build Configuration

**[`package.json`](https://github.com/Nutlope/hallmark/blob/main/package.json)** sits at the repository root and contains project metadata, dependency definitions, and scripts for building or serving the static site, typically using Vite or a simple static server command.

## Practical Code Examples from [`main.js`](https://github.com/Nutlope/hallmark/blob/main/main.js)

The following snippets demonstrate how to interact with the functions defined in [`site/js/main.js`](https://github.com/Nutlope/hallmark/blob/main/site/js/main.js).

Switch to a specific theme programmatically:

```javascript
// Applies the 'midnight' theme by updating the DOM and localStorage
applyTheme('midnight');

```

Copy text from a source element:

```javascript
// Select an element with the data-copy-source attribute and copy its text
const source = document.querySelector('[data-copy-source]');
copyFromSource(source);

```

Listen for built-in keyboard shortcuts:

```javascript
document.addEventListener('keydown', (e) => {
  if (e.key === 't' || e.key === 'T') {
    // Cycle to next theme in THEMES object
    const order = Object.keys(THEMES);
    const current = document.documentElement.dataset.theme;
    const next = order[(order.indexOf(current) + 1) % order.length];
    applyTheme(next);
  } else if (e.key === 'r' || e.key === 'R') {
    // Apply random theme using pickRandomTheme()
    applyTheme(pickRandomTheme());
  }
});

```

## Summary

- All **executable source code** resides in the **`site/`** directory, including HTML, JavaScript, CSS, and test fixtures.
- **[`site/js/main.js`](https://github.com/Nutlope/hallmark/blob/main/site/js/main.js)** contains the core application logic for theming, clipboard operations, and UI interactions.
- **Example implementations** are located in **`site/examples/`**, each demonstrating specific theme configurations.
- **Content data** lives in **`skills/hallmark/`** as Markdown references that populate the application's text content.
- The repository contains **no server-side code**; it is a purely client-side static site.

## Frequently Asked Questions

### Does the Hallmark repository contain any backend server code?

No. According to the Nutlope/hallmark source code, the repository is a pure client-side web demo. All functionality executes in the browser using JavaScript files located in `site/js/`, with no API endpoints, server routes, or backend logic present.

### Where are the theme definitions stored?

Theme definitions reside in the **`THEMES`** object located in **[`site/js/main.js`](https://github.com/Nutlope/hallmark/blob/main/site/js/main.js)**. This JavaScript object maps theme names to their configuration, while associated CSS files for each theme are stored in `site/examples/[theme-name]/` directories or the root `site/` folder.

### How do I add a new example page to the repository?

Create a new subdirectory under **`site/examples/`** containing an [`index.html`](https://github.com/Nutlope/hallmark/blob/main/index.html) file, a CSS file for your theme-specific styles, and optionally a JavaScript file (like [`app.js`](https://github.com/Nutlope/hallmark/blob/main/app.js)) that imports the core Hallmark logic from [`site/js/main.js`](https://github.com/Nutlope/hallmark/blob/main/site/js/main.js). Reference existing examples like `site/examples/wayfare/` for the standard structure.

### What is the purpose of the `skills/hallmark/` directory?

The **`skills/hallmark/`** directory contains Markdown reference files that serve as the content source for the demo. Files like [`microinteractions.md`](https://github.com/Nutlope/hallmark/blob/main/microinteractions.md) provide the copy and structural data that populate the **`COPY`** object in [`main.js`](https://github.com/Nutlope/hallmark/blob/main/main.js), driving the text content displayed across different themes.