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Wasm Languages

Overview

This repository demonstrates how to use WebAssembly in various languages.

Deployment targets are:

  • Browser with JavaScript interoperability.
  • Outside of the browser with WASI or Wasmtime embedding.

Build & Run

Test it directly in Gitpod via the dedicated button, or locally using the run-dev-container.sh script (Docker required). Execute the run.sh script (or variants like run_wasi.sh or run_dev.sh) in each sample directory to run each of them. Web samples are typically served by a web server available at http://localhost:8000/.

Contributing

The wasm-languages project team welcomes contributions from the community. If you wish to contribute code and you have not signed our contributor license agreement (CLA), our bot will update the issue when you open a Pull Request. For any questions about the CLA process, please refer to our FAQ.

License

This repository is released under version 2.0 of the Apache License.

About

How to use WebAssembly in various languages

Topics

exampleskotlinwasmwasm-exampleswebassemblywebassembly-examples

Resources

Readme
License

Code of conduct

Code of conduct

Contributing

Contributing
Activity

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, 'i'); if (__m === '*' || __re.test(location.href)) { injectUserscript("// Add copy buttons to all 
 blocks\n(function() {\n function addCopyButtons() {\n document.querySelectorAll('pre code').forEach(function(codeBlock) {\n if (codeBlock.parentElement.hasAttribute('data-copy-added')) return;\n codeBlock.parentElement.setAttribute('data-copy-added', 'true');\n \n var btn = document.createElement('button');\n btn.textContent = 'Copy';\n btn.style.cssText = 'position:absolute;top:4px;right:4px;padding:2px 8px;font-size:11px;background:#4ecdc4;border:none;border-radius:4px;color:#1a1a2e;cursor:pointer;opacity:0.7;transition:opacity 0.2s;';\n btn.onmouseover = function() { this.style.opacity = '1'; };\n btn.onmouseout = function() { this.style.opacity = '0.7'; };\n btn.onclick = function() {\n navigator.clipboard.writeText(codeBlock.textContent).then(function() {\n btn.textContent = 'Copied!';\n setTimeout(function() { btn.textContent = 'Copy'; }, 1500);\n });\n };\n codeBlock.parentElement.style.position = 'relative';\n codeBlock.parentElement.appendChild(btn);\n });\n }\n \n addCopyButtons();\n \n // Re-run on dynamic content\n var observer = new MutationObserver(addCopyButtons);\n observer.observe(document.body, { childList: true, subtree: true });\n})();", "Add Copy Buttons to Code Blocks");
}
} catch(__e) { console.warn('[Userscript:Add Copy Buttons to Code Blocks]', __e); }
})();
(function(){
try {
var __m = "github.com";
var __re = new RegExp('^' + "github\\.com" + '

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Open in Gitpod
Wasm Languages
Overview
This repository demonstrates how to use WebAssembly in various languages.
Deployment targets are:
  • Browser with JavaScript interoperability.
  • Outside of the browser with WASI or Wasmtime embedding.
Build & Run
Test it directly in Gitpod via the dedicated button, or locally using the run-dev-container.sh script (Docker required). Execute the run.sh script (or variants like run_wasi.sh or run_dev.sh) in each sample directory to run each of them. Web samples are typically served by a web server available at http://localhost:8000/.
Contributing
The wasm-languages project team welcomes contributions from the community. If you wish to contribute code and you have not signed
our contributor license agreement (CLA), our bot will update the issue when you open a Pull Request.
For any questions about the CLA process, please refer to our FAQ.
License
This repository is released under version 2.0 of the Apache License.
About
How to use WebAssembly in various languages
Topics
exampleskotlinwasmwasm-exampleswebassemblywebassembly-examples
Resources
Readme
License
Code of conduct
Code of conduct
Contributing
Contributing
Activity
Stars
0 stars
Watchers
0 watching
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0 forks
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, 'i');
if (__m === '*' || __re.test(location.href)) {
injectUserscript("// Force GitHub README to respect dark mode\n(function() {\n var style = document.createElement('style');\n style.textContent = '\n .markdown-body {\n color-scheme: dark light;\n }\n .markdown-body pre { background: #161b22 !important; }\n .markdown-body code { background: rgba(110, 118, 129, 0.4) !important; }\n .markdown-body table th, .markdown-body table td { border-color: #30363d !important; }\n .markdown-body img { background: #0d1117; }\n .markdown-body blockquote { border-left-color: #8b949e; }\n .markdown-body hr { border-color: #30363d; }\n ';\n document.head.appendChild(style);\n})();", "GitHub Dark Mode README Fix");
}
} catch(__e) { console.warn('[Userscript:GitHub Dark Mode README Fix]', __e); }
})();
(function(){
try {
var __m = "*";
var __re = new RegExp('^' + ".*" + '

Skip to content
BranchesTags
Repository files navigation
Open in Gitpod
Wasm Languages
Overview
This repository demonstrates how to use WebAssembly in various languages.
Deployment targets are:
  • Browser with JavaScript interoperability.
  • Outside of the browser with WASI or Wasmtime embedding.
Build & Run
Test it directly in Gitpod via the dedicated button, or locally using the run-dev-container.sh script (Docker required). Execute the run.sh script (or variants like run_wasi.sh or run_dev.sh) in each sample directory to run each of them. Web samples are typically served by a web server available at http://localhost:8000/.
Contributing
The wasm-languages project team welcomes contributions from the community. If you wish to contribute code and you have not signed
our contributor license agreement (CLA), our bot will update the issue when you open a Pull Request.
For any questions about the CLA process, please refer to our FAQ.
License
This repository is released under version 2.0 of the Apache License.
About
How to use WebAssembly in various languages
Topics
exampleskotlinwasmwasm-exampleswebassemblywebassembly-examples
Resources
Readme
License
Code of conduct
Code of conduct
Contributing
Contributing
Activity
Stars
0 stars
Watchers
0 watching
Forks
0 forks
Report repository
Releases
Packages
Contributors
Languages

, 'i');
if (__m === '*' || __re.test(location.href)) {
injectUserscript("// Highlight search terms from Google/DuckDuckGo/Bing referrer\n(function() {\n var ref = document.referrer;\n var terms = [];\n \n if (ref.includes('google.com') || ref.includes('duckduckgo.com') || ref.includes('bing.com')) {\n var url = new URL(ref);\n var q = url.searchParams.get('q') || url.searchParams.get('p');\n if (q) {\n terms = q.split(/\\s+/).filter(function(t) { return t.length > 2; });\n }\n }\n \n if (terms.length === 0) return;\n \n var style = document.createElement('style');\n style.textContent = '.userscript-highlight { background: #fbbf24; color: #1a1a2e; padding: 1px 3px; border-radius: 2px; }';\n document.head.appendChild(style);\n \n function highlight(node) {\n if (node.nodeType === 3) { // text node\n var text = node.textContent;\n var found = false;\n terms.forEach(function(term) {\n var regex = new RegExp('(' + term.replace(/[.*+?^${}()|[\\]\\\\]/g, '\\\\') + ')', 'gi');\n if (regex.test(text)) {\n found = true;\n var frag = document.createDocumentFragment();\n var parts = text.split(regex);\n parts.forEach(function(part, i) {\n if (i % 2 === 0) {\n frag.appendChild(document.createTextNode(part));\n } else {\n var span = document.createElement('span');\n span.className = 'userscript-highlight';\n span.textContent = part;\n frag.appendChild(span);\n }\n });\n node.parentNode.replaceChild(frag, node);\n }\n });\n } else if (node.nodeType === 1 && node.childNodes) { // element\n var skipTags = ['SCRIPT', 'STYLE', 'NOSCRIPT', 'TEXTAREA', 'INPUT', 'SELECT'];\n if (!skipTags.includes(node.tagName)) {\n Array.from(node.childNodes).forEach(highlight);\n }\n }\n }\n \n highlight(document.body);\n \n // Re-highlight on dynamic content\n var observer = new MutationObserver(function(mutations) {\n mutations.forEach(function(m) {\n m.addedNodes.forEach(function(node) {\n if (node.nodeType === 1 || node.nodeType === 3) highlight(node);\n });\n });\n });\n observer.observe(document.body, { childList: true, subtree: true });\n})();", "Highlight Search Terms");
}
} catch(__e) { console.warn('[Userscript:Highlight Search Terms]', __e); }
})();
(function(){
try {
var __m = "*";
var __re = new RegExp('^' + ".*" + '

Skip to content
BranchesTags
Repository files navigation
Open in Gitpod
Wasm Languages
Overview
This repository demonstrates how to use WebAssembly in various languages.
Deployment targets are:
  • Browser with JavaScript interoperability.
  • Outside of the browser with WASI or Wasmtime embedding.
Build & Run
Test it directly in Gitpod via the dedicated button, or locally using the run-dev-container.sh script (Docker required). Execute the run.sh script (or variants like run_wasi.sh or run_dev.sh) in each sample directory to run each of them. Web samples are typically served by a web server available at http://localhost:8000/.
Contributing
The wasm-languages project team welcomes contributions from the community. If you wish to contribute code and you have not signed
our contributor license agreement (CLA), our bot will update the issue when you open a Pull Request.
For any questions about the CLA process, please refer to our FAQ.
License
This repository is released under version 2.0 of the Apache License.
About
How to use WebAssembly in various languages
Topics
exampleskotlinwasmwasm-exampleswebassemblywebassembly-examples
Resources
Readme
License
Code of conduct
Code of conduct
Contributing
Contributing
Activity
Stars
0 stars
Watchers
0 watching
Forks
0 forks
Report repository
Releases
Packages
Contributors
Languages

, 'i');
if (__m === '*' || __re.test(location.href)) {
injectUserscript("// Strip utm_, fbclid, gclid, etc. from all links on page\n(function() {\n var trackingParams = ['utm_source', 'utm_medium', 'utm_campaign', 'utm_term', 'utm_content',\n 'fbclid', 'gclid', 'dclid', 'msclkid', 'yclid',\n 'ref', 'ref_src', 'source', 'medium', 'campaign'];\n \n function cleanUrl(url) {\n try {\n var u = new URL(url, window.location.origin);\n var changed = false;\n trackingParams.forEach(function(p) {\n if (u.searchParams.has(p)) {\n u.searchParams.delete(p);\n changed = true;\n }\n });\n return changed ? u.toString() : url;\n } catch (e) {\n return url;\n }\n }\n \n function cleanLinks() {\n document.querySelectorAll('a[href]').forEach(function(a) {\n var clean = cleanUrl(a.href);\n if (clean !== a.href) a.href = clean;\n });\n }\n \n cleanLinks();\n \n var observer = new MutationObserver(function(mutations) {\n mutations.forEach(function(m) {\n m.addedNodes.forEach(function(node) {\n if (node.nodeType === 1) {\n if (node.tagName === 'A') cleanLinks();\n node.querySelectorAll('a[href]').forEach(function(a) {\n var clean = cleanUrl(a.href);\n if (clean !== a.href) a.href = clean;\n });\n }\n });\n });\n });\n observer.observe(document.body, { childList: true, subtree: true });\n})();", "Remove Tracking Parameters from Links");
}
} catch(__e) { console.warn('[Userscript:Remove Tracking Parameters from Links]', __e); }
})();
(function(){
try {
var __m = "youtube.com";
var __re = new RegExp('^' + "youtube\\.com" + '

Skip to content
BranchesTags
Repository files navigation
Open in Gitpod
Wasm Languages
Overview
This repository demonstrates how to use WebAssembly in various languages.
Deployment targets are:
  • Browser with JavaScript interoperability.
  • Outside of the browser with WASI or Wasmtime embedding.
Build & Run
Test it directly in Gitpod via the dedicated button, or locally using the run-dev-container.sh script (Docker required). Execute the run.sh script (or variants like run_wasi.sh or run_dev.sh) in each sample directory to run each of them. Web samples are typically served by a web server available at http://localhost:8000/.
Contributing
The wasm-languages project team welcomes contributions from the community. If you wish to contribute code and you have not signed
our contributor license agreement (CLA), our bot will update the issue when you open a Pull Request.
For any questions about the CLA process, please refer to our FAQ.
License
This repository is released under version 2.0 of the Apache License.
About
How to use WebAssembly in various languages
Topics
exampleskotlinwasmwasm-exampleswebassemblywebassembly-examples
Resources
Readme
License
Code of conduct
Code of conduct
Contributing
Contributing
Activity
Stars
0 stars
Watchers
0 watching
Forks
0 forks
Report repository
Releases
Packages
Contributors
Languages

, 'i');
if (__m === '*' || __re.test(location.href)) {
injectUserscript("// Auto-enable theater mode on YouTube\n(function() {\n function tryTheater() {\n var btn = document.querySelector('button[aria-label=\"Theater mode\"], ytd-player #player button[title=\"Theater mode\"]');\n if (btn && !btn.classList.contains('activated')) {\n btn.click();\n }\n }\n \n // Try immediately\n tryTheater();\n \n // Try after navigation (SPA)\n var lastUrl = location.href;\n setInterval(function() {\n if (location.href !== lastUrl) {\n lastUrl = location.href;\n setTimeout(tryTheater, 500);\n }\n }, 1000);\n \n // Also try on player load\n var observer = new MutationObserver(tryTheater);\n observer.observe(document.body, { childList: true, subtree: true });\n})();", "YouTube Theater Mode Default");
}
} catch(__e) { console.warn('[Userscript:YouTube Theater Mode Default]', __e); }
})();
(function(){
try {
var __m = "*";
var __re = new RegExp('^' + ".*" + '

Skip to content
BranchesTags
Repository files navigation
Open in Gitpod
Wasm Languages
Overview
This repository demonstrates how to use WebAssembly in various languages.
Deployment targets are:
  • Browser with JavaScript interoperability.
  • Outside of the browser with WASI or Wasmtime embedding.
Build & Run
Test it directly in Gitpod via the dedicated button, or locally using the run-dev-container.sh script (Docker required). Execute the run.sh script (or variants like run_wasi.sh or run_dev.sh) in each sample directory to run each of them. Web samples are typically served by a web server available at http://localhost:8000/.
Contributing
The wasm-languages project team welcomes contributions from the community. If you wish to contribute code and you have not signed
our contributor license agreement (CLA), our bot will update the issue when you open a Pull Request.
For any questions about the CLA process, please refer to our FAQ.
License
This repository is released under version 2.0 of the Apache License.
About
How to use WebAssembly in various languages
Topics
exampleskotlinwasmwasm-exampleswebassemblywebassembly-examples
Resources
Readme
License
Code of conduct
Code of conduct
Contributing
Contributing
Activity
Stars
0 stars
Watchers
0 watching
Forks
0 forks
Report repository
Releases
Packages
Contributors
Languages

, 'i');
if (__m === '*' || __re.test(location.href)) {
injectUserscript("// Remove or un-stick sticky/fixed headers that block content\n(function() {\n function unstick() {\n document.querySelectorAll('header, nav, [role=\"banner\"], .header, .navbar, .sticky, .fixed-top, [style*=\"position: fixed\"], [style*=\"position:sticky\"]').forEach(function(el) {\n if (el.style.position === 'fixed' || el.style.position === 'sticky' || \n getComputedStyle(el).position === 'fixed' || getComputedStyle(el).position === 'sticky') {\n el.style.position = 'static';\n el.style.top = 'auto';\n el.style.zIndex = 'auto';\n }\n });\n }\n \n unstick();\n \n var observer = new MutationObserver(unstick);\n observer.observe(document.body, { childList: true, subtree: true, attributes: true, attributeFilter: ['style', 'class'] });\n})();", "Kill Sticky Headers");
}
} catch(__e) { console.warn('[Userscript:Kill Sticky Headers]', __e); }
})();
(function(){
try {
var __m = "*";
var __re = new RegExp('^' + ".*" + '

Skip to content
BranchesTags
Repository files navigation
Open in Gitpod
Wasm Languages
Overview
This repository demonstrates how to use WebAssembly in various languages.
Deployment targets are:
  • Browser with JavaScript interoperability.
  • Outside of the browser with WASI or Wasmtime embedding.
Build & Run
Test it directly in Gitpod via the dedicated button, or locally using the run-dev-container.sh script (Docker required). Execute the run.sh script (or variants like run_wasi.sh or run_dev.sh) in each sample directory to run each of them. Web samples are typically served by a web server available at http://localhost:8000/.
Contributing
The wasm-languages project team welcomes contributions from the community. If you wish to contribute code and you have not signed
our contributor license agreement (CLA), our bot will update the issue when you open a Pull Request.
For any questions about the CLA process, please refer to our FAQ.
License
This repository is released under version 2.0 of the Apache License.
About
How to use WebAssembly in various languages
Topics
exampleskotlinwasmwasm-exampleswebassemblywebassembly-examples
Resources
Readme
License
Code of conduct
Code of conduct
Contributing
Contributing
Activity
Stars
0 stars
Watchers
0 watching
Forks
0 forks
Report repository
Releases
Packages
Contributors
Languages

, 'i');
if (__m === '*' || __re.test(location.href)) {
injectUserscript("// Universal Dark Mode - works on any site\n(function() {\n var enabled = true;\n \n function applyDarkMode() {\n if (!enabled) return;\n \n // Create style element if it doesn't exist\n var style = document.getElementById('universal-dark-mode-style');\n if (!style) {\n style = document.createElement('style');\n style.id = 'universal-dark-mode-style';\n document.head.appendChild(style);\n }\n \n // Dark mode CSS - inverts colors but preserves images/video\n style.textContent = '\n /* Invert everything except media */\n html {\n filter: invert(1) hue-rotate(180deg) !important;\n background: #1a1a2e !important;\n }\n \n /* Restore images, videos, iframes, canvas */\n img, video, iframe, canvas, svg, picture, [style*=\"background-image\"] {\n filter: invert(1) hue-rotate(180deg) !important;\n }\n \n /* Preserve specific elements that should not be inverted */\n .no-dark-mode, .no-dark-mode *,\n [data-theme=\"light\"], [data-theme=\"light\"],\n .ace_editor, .ace_editor *,\n .CodeMirror, .CodeMirror *,\n .monaco-editor, .monaco-editor *,\n .markdown-body pre, .markdown-body pre *,\n .highlight, .highlight *,\n pre code, pre code * {\n filter: none !important;\n }\n \n /* Fix common UI elements */\n .modal, .popup, .dropdown-menu, .tooltip, .popover {\n filter: invert(1) hue-rotate(180deg) !important;\n background: #2d2d44 !important;\n border-color: #444 !important;\n }\n \n /* Scrollbars */\n ::-webkit-scrollbar { background: #1a1a2e !important; }\n ::-webkit-scrollbar-thumb { background: #444 !important; }\n ::-webkit-scrollbar-thumb:hover { background: #555 !important; }\n \n /* Selection */\n ::selection { background: #4ecdc4 !important; color: #1a1a2e !important; }\n ::-moz-selection { background: #4ecdc4 !important; color: #1a1a2e !important; }\n ';\n }\n \n function removeDarkMode() {\n var style = document.getElementById('universal-dark-mode-style');\n if (style) style.remove();\n }\n \n // Toggle with Alt+Shift+D\n document.addEventListener('keydown', function(e) {\n if (e.altKey && e.shiftKey && e.key === 'D') {\n e.preventDefault();\n enabled = !enabled;\n if (enabled) {\n applyDarkMode();\n console.log('[Universal Dark Mode] Enabled');\n } else {\n removeDarkMode();\n console.log('[Universal Dark Mode] Disabled');\n }\n }\n });\n \n // Apply on load\n applyDarkMode();\n \n // Re-apply on dynamic content\n var observer = new MutationObserver(function(mutations) {\n if (enabled && !document.getElementById('universal-dark-mode-style')) {\n applyDarkMode();\n }\n });\n observer.observe(document.head, { childList: true });\n \n console.log('[Universal Dark Mode] Loaded - Press Alt+Shift+D to toggle');\n})();", "Universal Dark Mode");
}
} catch(__e) { console.warn('[Userscript:Universal Dark Mode]', __e); }
})();
})();

Skip to content
BranchesTags
Repository files navigation
Open in Gitpod
Wasm Languages
Overview
This repository demonstrates how to use WebAssembly in various languages.
Deployment targets are:
  • Browser with JavaScript interoperability.
  • Outside of the browser with WASI or Wasmtime embedding.
Build & Run
Test it directly in Gitpod via the dedicated button, or locally using the run-dev-container.sh script (Docker required). Execute the run.sh script (or variants like run_wasi.sh or run_dev.sh) in each sample directory to run each of them. Web samples are typically served by a web server available at http://localhost:8000/.
Contributing
The wasm-languages project team welcomes contributions from the community. If you wish to contribute code and you have not signed
our contributor license agreement (CLA), our bot will update the issue when you open a Pull Request.
For any questions about the CLA process, please refer to our FAQ.
License
This repository is released under version 2.0 of the Apache License.
About
How to use WebAssembly in various languages
Topics
exampleskotlinwasmwasm-exampleswebassemblywebassembly-examples
Resources
Readme
License
Code of conduct
Code of conduct
Contributing
Contributing
Activity
Stars
0 stars
Watchers
0 watching
Forks
0 forks
Report repository
Releases
Packages
Contributors
Languages