Jonathan Miller
3a30f1a088
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# Conflicts: # .mokogitea/cascade-dev.yml # src/templateDetails.xml # updates.xml
114 lines
4.2 KiB
Markdown
114 lines
4.2 KiB
Markdown
[← Back to Home](Home)
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# Minification
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MokoOnyx includes an automatic CSS/JS minification system that generates `.min` files at runtime based on the development mode setting.
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---
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## How It Works
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The minification system is implemented in `MokoMinifyHelper` (`helper/minify.php`). It is called from the template's `index.php` on every page load and follows a simple rule:
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- **Development mode OFF** (production): `.min` files are generated from source files when the source is newer or the `.min` file is missing
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- **Development mode ON**: all `.min` files are **deleted** so the browser loads unminified source files for debugging
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---
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## Files Managed
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### CSS Files
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| Source File | Minified Output |
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|-------------|----------------|
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| `css/template.css` | `css/template.min.css` |
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| `css/offline.css` | `css/offline.min.css` |
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| `css/editor.css` | `css/editor.min.css` |
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| `css/a11y-high-contrast.css` | `css/a11y-high-contrast.min.css` |
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| `css/user.css` | `css/user.min.css` |
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| `css/theme/light.standard.css` | `css/theme/light.standard.min.css` |
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| `css/theme/dark.standard.css` | `css/theme/dark.standard.min.css` |
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| `css/theme/light.custom.css` | `css/theme/light.custom.min.css` |
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| `css/theme/dark.custom.css` | `css/theme/dark.custom.min.css` |
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### JavaScript Files
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| Source File | Minified Output |
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|-------------|----------------|
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| `js/template.js` | `js/template.min.js` |
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| `js/gtm.js` | `js/gtm.min.js` |
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| `js/user.js` | `js/user.min.js` |
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All paths are relative to `media/templates/site/mokoonyx/`.
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---
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## Staleness Check
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The system uses filesystem modification times to determine whether a `.min` file needs regenerating:
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1. If the source file does not exist, skip it
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2. If the `.min` file exists and its modification time is **newer or equal** to the source, skip it
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3. Otherwise, read the source, minify it, and write the `.min` file
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This means minification only runs when source files actually change, keeping page load overhead minimal.
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---
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## CSS Minification
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The CSS minifier performs these transformations:
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1. Remove CSS comments (preserving IE hacks)
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2. Remove whitespace around `{ } : ; , > + ~`
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3. Collapse remaining whitespace to single spaces
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4. Remove trailing semicolons before closing braces (`;}` becomes `}`)
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5. Strip leading/trailing whitespace
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---
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## JavaScript Minification
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The JS minifier performs these transformations:
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1. Remove multi-line comments (`/* ... */`)
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2. Remove single-line comments (`//`) while preserving URLs
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3. Collapse whitespace
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4. Remove spaces around operators and punctuation
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5. Restore necessary spaces after keywords (`var`, `let`, `const`, `return`, `typeof`, `instanceof`, `new`, `delete`, `throw`, `case`, `in`, `of`)
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---
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## Build-Time vs Runtime
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| Context | What Happens |
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|---------|-------------|
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| **Runtime** (page load) | `MokoMinifyHelper::sync()` runs on every page load. In production mode, it checks timestamps and regenerates stale `.min` files. The overhead is negligible (filesystem stat calls only when files have not changed). |
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| **Build-time** (`make build`) | The Makefile runs `make minify` before packaging. This uses the moko-platform `minify.js` script (Node.js) with `terser` and `clean-css` for higher-quality minification. |
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| **Install/Update** | The installer script (`script.php`) deletes all `.min.css` and `.min.js` files in the `css/` and `js/` directories so they are cleanly regenerated by the runtime minifier on the first page load. Vendor `.min` files in `vendor/` are not touched. |
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---
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## Debug Mode Behaviour
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To debug CSS or JS issues:
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1. Go to **System → Site Templates → MokoOnyx**
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2. Open the **Advanced** tab
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3. Set **Development Mode** to **Yes**
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4. Save
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This immediately deletes all `.min` files. The template will load the unminified source files, making browser DevTools inspection straightforward. Remember to turn development mode **off** for production.
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---
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*Built with [moko-platform](https://git.mokoconsulting.tech/MokoConsulting/moko-platform) -- Moko Consulting*
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---
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*Repo: [MokoOnyx](https://git.mokoconsulting.tech/MokoConsulting/MokoOnyx) · [moko-platform](https://git.mokoconsulting.tech/MokoConsulting/moko-platform/wiki/Home)*
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| Revision | Date | Author | Description |
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|---|---|---|---|
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| 1.0 | 2026-05-09 | Moko Consulting | Initial version |
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