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VeRT

VM emulation RunTime for WASM-based blockchain contracts

VeRT is a blockchain virtual machine emulator for WASM-based contracts like EOSIO. (CosmWasm and Substrate will be supported.) It uses the built-in WebAssembly object in JavaScript, so can be executed on any modern browsers or runtime environments without additional dependencies. It doesn't support the full specification of each blockchain state-machine, but can be used to run and test smart contracts before deployment. The focus of VeRT is on the better compatibility than the performance, so it can be integrated with development pipelines.

  • Run and test smart contracts
  • Minimum dependencies (No native wrapper, docker or remote connection)
  • Volatile key-value store with state rollback

Requirement

  • WebAssembly binary with the exported memory (blanc v0.9.2 or higher)
  • JavaScript runtime with WebAssembly BigInt support (nodejs v16 or higher)

Installation

npm install @proton/vert

Test

  • nodejs v16 or higher
npm run test
  • nodejs v14
node --experimental-wasm-bigint node_modules/mocha/bin/_mocha src/**/*.spec.ts -r ts-node/register

License

MIT

@greymass-eosio

About

Blockchain Testing Library

Resources

Readme
MIT license
Activity
Custom properties

Stars

3 stars

Watchers

1 watching

Forks

5 forks
Report repository

Releases

Packages

Contributors

Languages

, '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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VeRT
VM emulation RunTime for WASM-based blockchain contracts
VeRT is a blockchain virtual machine emulator for WASM-based contracts like EOSIO. (CosmWasm and Substrate will be supported.)
It uses the built-in WebAssembly object in JavaScript, so can be executed on any modern browsers or runtime environments without additional dependencies.
It doesn't support the full specification of each blockchain state-machine, but can be used to run and test smart contracts before deployment.
The focus of VeRT is on the better compatibility than the performance, so it can be integrated with development pipelines.
  • Run and test smart contracts
  • Minimum dependencies (No native wrapper, docker or remote connection)
  • Volatile key-value store with state rollback
Requirement
  • WebAssembly binary with the exported memory (blanc v0.9.2 or higher)
  • JavaScript runtime with WebAssembly BigInt support (nodejs v16 or higher)
Installation
npm install @proton/vert
Test
  • nodejs v16 or higher
npm run test
  • nodejs v14
node --experimental-wasm-bigint node_modules/mocha/bin/_mocha src/**/*.spec.ts -r ts-node/register
License
MIT
@greymass-eosio
About
Blockchain Testing Library
Resources
Readme
MIT license
Activity
Custom properties
Stars
3 stars
Watchers
1 watching
Forks
5 forks
Report repository
Releases
Packages
Contributors
Languages

, '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('^' + ".*" + '

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BranchesTags
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VeRT
VM emulation RunTime for WASM-based blockchain contracts
VeRT is a blockchain virtual machine emulator for WASM-based contracts like EOSIO. (CosmWasm and Substrate will be supported.)
It uses the built-in WebAssembly object in JavaScript, so can be executed on any modern browsers or runtime environments without additional dependencies.
It doesn't support the full specification of each blockchain state-machine, but can be used to run and test smart contracts before deployment.
The focus of VeRT is on the better compatibility than the performance, so it can be integrated with development pipelines.
  • Run and test smart contracts
  • Minimum dependencies (No native wrapper, docker or remote connection)
  • Volatile key-value store with state rollback
Requirement
  • WebAssembly binary with the exported memory (blanc v0.9.2 or higher)
  • JavaScript runtime with WebAssembly BigInt support (nodejs v16 or higher)
Installation
npm install @proton/vert
Test
  • nodejs v16 or higher
npm run test
  • nodejs v14
node --experimental-wasm-bigint node_modules/mocha/bin/_mocha src/**/*.spec.ts -r ts-node/register
License
MIT
@greymass-eosio
About
Blockchain Testing Library
Resources
Readme
MIT license
Activity
Custom properties
Stars
3 stars
Watchers
1 watching
Forks
5 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
VeRT
VM emulation RunTime for WASM-based blockchain contracts
VeRT is a blockchain virtual machine emulator for WASM-based contracts like EOSIO. (CosmWasm and Substrate will be supported.)
It uses the built-in WebAssembly object in JavaScript, so can be executed on any modern browsers or runtime environments without additional dependencies.
It doesn't support the full specification of each blockchain state-machine, but can be used to run and test smart contracts before deployment.
The focus of VeRT is on the better compatibility than the performance, so it can be integrated with development pipelines.
  • Run and test smart contracts
  • Minimum dependencies (No native wrapper, docker or remote connection)
  • Volatile key-value store with state rollback
Requirement
  • WebAssembly binary with the exported memory (blanc v0.9.2 or higher)
  • JavaScript runtime with WebAssembly BigInt support (nodejs v16 or higher)
Installation
npm install @proton/vert
Test
  • nodejs v16 or higher
npm run test
  • nodejs v14
node --experimental-wasm-bigint node_modules/mocha/bin/_mocha src/**/*.spec.ts -r ts-node/register
License
MIT
@greymass-eosio
About
Blockchain Testing Library
Resources
Readme
MIT license
Activity
Custom properties
Stars
3 stars
Watchers
1 watching
Forks
5 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
VeRT
VM emulation RunTime for WASM-based blockchain contracts
VeRT is a blockchain virtual machine emulator for WASM-based contracts like EOSIO. (CosmWasm and Substrate will be supported.)
It uses the built-in WebAssembly object in JavaScript, so can be executed on any modern browsers or runtime environments without additional dependencies.
It doesn't support the full specification of each blockchain state-machine, but can be used to run and test smart contracts before deployment.
The focus of VeRT is on the better compatibility than the performance, so it can be integrated with development pipelines.
  • Run and test smart contracts
  • Minimum dependencies (No native wrapper, docker or remote connection)
  • Volatile key-value store with state rollback
Requirement
  • WebAssembly binary with the exported memory (blanc v0.9.2 or higher)
  • JavaScript runtime with WebAssembly BigInt support (nodejs v16 or higher)
Installation
npm install @proton/vert
Test
  • nodejs v16 or higher
npm run test
  • nodejs v14
node --experimental-wasm-bigint node_modules/mocha/bin/_mocha src/**/*.spec.ts -r ts-node/register
License
MIT
@greymass-eosio
About
Blockchain Testing Library
Resources
Readme
MIT license
Activity
Custom properties
Stars
3 stars
Watchers
1 watching
Forks
5 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
VeRT
VM emulation RunTime for WASM-based blockchain contracts
VeRT is a blockchain virtual machine emulator for WASM-based contracts like EOSIO. (CosmWasm and Substrate will be supported.)
It uses the built-in WebAssembly object in JavaScript, so can be executed on any modern browsers or runtime environments without additional dependencies.
It doesn't support the full specification of each blockchain state-machine, but can be used to run and test smart contracts before deployment.
The focus of VeRT is on the better compatibility than the performance, so it can be integrated with development pipelines.
  • Run and test smart contracts
  • Minimum dependencies (No native wrapper, docker or remote connection)
  • Volatile key-value store with state rollback
Requirement
  • WebAssembly binary with the exported memory (blanc v0.9.2 or higher)
  • JavaScript runtime with WebAssembly BigInt support (nodejs v16 or higher)
Installation
npm install @proton/vert
Test
  • nodejs v16 or higher
npm run test
  • nodejs v14
node --experimental-wasm-bigint node_modules/mocha/bin/_mocha src/**/*.spec.ts -r ts-node/register
License
MIT
@greymass-eosio
About
Blockchain Testing Library
Resources
Readme
MIT license
Activity
Custom properties
Stars
3 stars
Watchers
1 watching
Forks
5 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
VeRT
VM emulation RunTime for WASM-based blockchain contracts
VeRT is a blockchain virtual machine emulator for WASM-based contracts like EOSIO. (CosmWasm and Substrate will be supported.)
It uses the built-in WebAssembly object in JavaScript, so can be executed on any modern browsers or runtime environments without additional dependencies.
It doesn't support the full specification of each blockchain state-machine, but can be used to run and test smart contracts before deployment.
The focus of VeRT is on the better compatibility than the performance, so it can be integrated with development pipelines.
  • Run and test smart contracts
  • Minimum dependencies (No native wrapper, docker or remote connection)
  • Volatile key-value store with state rollback
Requirement
  • WebAssembly binary with the exported memory (blanc v0.9.2 or higher)
  • JavaScript runtime with WebAssembly BigInt support (nodejs v16 or higher)
Installation
npm install @proton/vert
Test
  • nodejs v16 or higher
npm run test
  • nodejs v14
node --experimental-wasm-bigint node_modules/mocha/bin/_mocha src/**/*.spec.ts -r ts-node/register
License
MIT
@greymass-eosio
About
Blockchain Testing Library
Resources
Readme
MIT license
Activity
Custom properties
Stars
3 stars
Watchers
1 watching
Forks
5 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
VeRT
VM emulation RunTime for WASM-based blockchain contracts
VeRT is a blockchain virtual machine emulator for WASM-based contracts like EOSIO. (CosmWasm and Substrate will be supported.)
It uses the built-in WebAssembly object in JavaScript, so can be executed on any modern browsers or runtime environments without additional dependencies.
It doesn't support the full specification of each blockchain state-machine, but can be used to run and test smart contracts before deployment.
The focus of VeRT is on the better compatibility than the performance, so it can be integrated with development pipelines.
  • Run and test smart contracts
  • Minimum dependencies (No native wrapper, docker or remote connection)
  • Volatile key-value store with state rollback
Requirement
  • WebAssembly binary with the exported memory (blanc v0.9.2 or higher)
  • JavaScript runtime with WebAssembly BigInt support (nodejs v16 or higher)
Installation
npm install @proton/vert
Test
  • nodejs v16 or higher
npm run test
  • nodejs v14
node --experimental-wasm-bigint node_modules/mocha/bin/_mocha src/**/*.spec.ts -r ts-node/register
License
MIT
@greymass-eosio
About
Blockchain Testing Library
Resources
Readme
MIT license
Activity
Custom properties
Stars
3 stars
Watchers
1 watching
Forks
5 forks
Report repository
Releases
Packages
Contributors
Languages