Features/add js interpreter

[iceljc]

PR Type

Enhancement

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Description

• Add JavaScript interpreter component for executing code in chat

• Refine scrollbar ID generation and markdown styling

• Add program code rich type support

• Improve script loading with multiple source handling

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Diagram Walkthrough

flowchart LR
  A["Chat Message"] --> B["Rich Content Check"]
  B --> C["JavaScript Code?"]
  C -->|Yes| D["JS Interpreter Component"]
  C -->|No| E["Standard Markdown"]
  D --> F["Parse & Execute Code"]
  F --> G["Load External Scripts"]
  G --> H["Render Chart/Output"]

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File Walkthrough

Relevant files

Enhancement

Markdown.svelte Improve scrollbar ID handling                                                        src/lib/common/markdown/Markdown.svelte Refine scrollbar ID generation with descriptive prefix Update element selector to use new ID format +3/-4      rc-js-interpreter.svelte Add JavaScript interpreter component                                          src/routes/chat/[agentId]/[conversationId]/rich-content/rc-js-interpreter.svelte Create new JavaScript interpreter component Add script loading with external source support Implement code parsing and execution functionality Add chart rendering container with scrollable support +105/-0  rc-message.svelte Integrate JS interpreter in messages                                          src/routes/chat/[agentId]/[conversationId]/rich-content/rc-message.svelte Add conditional rendering for JavaScript code messages Import and integrate JS interpreter component Check for program code rich type and JavaScript language +9/-2      rich-content.svelte Refactor conditional rendering logic                                          src/routes/chat/[agentId]/[conversationId]/rich-content/rich-content.svelte Refactor conditional rendering structure Replace separate if blocks with if-else pattern +3/-3      enums.js Add program code rich type                                                              src/lib/helpers/enums.js Add ProgramCode enum value to RichType +2/-1      http.js Update markdown replacement pattern                                            src/lib/helpers/http.js Modify markdown replacement pattern for horizontal rules Change replacement from empty string to @@@ +1/-1      conversationTypes.js Add language property to rich content                                        src/lib/helpers/types/conversationTypes.js Add language property to IRichContent prototype Document language field for code rich content +10/-0

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[qodo-merge-pro]

PR Reviewer Guide 🔍

Here are some key observations to aid the review process:

⏱️ Estimated effort to review: 4 🔵🔵🔵🔵⚪

🧪 No relevant tests

🔒 Security concerns Code injection vulnerability: The component uses eval() to execute JavaScript code extracted from chat messages without any validation, sanitization, or sandboxing. This creates a critical security vulnerability where malicious actors could execute arbitrary JavaScript code in the user's browser, potentially accessing sensitive data, making unauthorized requests, or performing other malicious actions. The regex-based code extraction from markdown also lacks proper validation and could be bypassed.

⚡ Recommended focus areas for review Security Risk The use of eval() to execute arbitrary JavaScript code from chat messages poses a significant security vulnerability. This allows execution of potentially malicious code without any validation or sandboxing. eval(code); } Error Handling The code extraction and execution logic lacks proper error handling. If the regex fails or eval() throws an exception, it could crash the component or expose sensitive error information. function initCode() { const text = message?.rich_content?.message?.text || message?.text || ''; const parsedText = marked.lexer(text); // @ts-ignore const codeText = parsedText.find(token => token.type === 'code' || token.type === 'html')?.text || ''; const code = codeText.replace(/<script\b[^>]*>([\s\S]*?)<\/script>/i, '$1'); eval(code); } Resource Management The scrollbar initialization and DOM manipulation could lead to memory leaks if the component is destroyed without proper cleanup. No cleanup logic is provided in onDestroy. function initScrollbar() { const elem = document.querySelector(`#js-interpreter-scrollbar-${scrollbarId}`); if (elem) { // @ts-ignore const scrollbar = OverlayScrollbars(elem, options); } }

[qodo-merge-pro]

PR Code Suggestions ✨

Explore these optional code suggestions:

Category	Suggestion	Impact
Security	Replace eval with secure execution Using eval() to execute arbitrary JavaScript code poses a critical security vulnerability. Malicious code could be executed, leading to XSS attacks or data theft. Consider using a sandboxed JavaScript execution environment or a safer alternative like a restricted code parser. src/routes/chat/[agentId]/[conversationId]/rich-content/rc-js-interpreter.svelte [43-50] function initCode() { const text = message?.rich_content?.message?.text || message?.text || ''; const parsedText = marked.lexer(text); // @ts-ignore const codeText = parsedText.find(token => token.type === 'code' || token.type === 'html')?.text || ''; const code = codeText.replace(/<script\b[^>]*>([\s\S]*?)<\/script>/i, '$1'); - eval(code); + + // TODO: Replace eval with a secure code execution method + // Consider using a sandboxed environment or code validation + try { + // Validate code before execution + if (isValidChartCode(code)) { + eval(code); + } + } catch (error) { + console.error('Code execution failed:', error); + } } Apply / Chat Suggestion importance[1-10]: 10 __ Why: The suggestion correctly identifies a critical security vulnerability by flagging the use of eval() on user-provided content, which could lead to XSS attacks.	High
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[qodo-merge-pro]

PR Reviewer Guide 🔍

Here are some key observations to aid the review process:

⏱️ Estimated effort to review: 4 🔵🔵🔵🔵⚪

🧪 No relevant tests

🔒 Security concerns Code injection vulnerability: The JavaScript interpreter component uses eval() to execute arbitrary code from chat messages without any sanitization or sandboxing. This creates a severe security risk as malicious users could execute arbitrary JavaScript code in the browser context, potentially accessing sensitive data, manipulating the DOM, or performing other malicious actions. The component also loads external scripts dynamically based on message content, which could be exploited to load malicious scripts from untrusted sources.

⚡ Recommended focus areas for review Security Risk The component uses eval() to execute arbitrary JavaScript code from chat messages, which poses significant security risks including XSS attacks and code injection vulnerabilities. Promise.all(promises).then(() => setTimeout(() => eval(code), 0)); } else { setTimeout(() => eval(code), 0); Script Management The script loading mechanism removes existing scripts with the same src and reloads them, which could cause memory leaks or unexpected behavior with global state. const curScripts = document.head.getElementsByTagName("script"); const found = Array.from(curScripts).find(x => x.src === src); if (found) { found.remove(); } Error Handling Script loading errors are only logged to console but don't prevent code execution, potentially causing runtime errors when dependencies are missing. script.onerror = () => { setTimeout(() => { console.log(`Error when loading script: ${src}`); resolve(false); }, 0); }

[qodo-merge-pro]

PR Code Suggestions ✨

Explore these optional code suggestions:

Category	Suggestion	Impact
Security	Replace eval with safer execution Using eval() to execute arbitrary code poses significant security risks. Consider implementing a sandboxed JavaScript execution environment or using a safer alternative like a restricted parser for specific use cases. src/routes/chat/[agentId]/[conversationId]/rich-content/rc-js-interpreter.svelte [65] -setTimeout(() => eval(code), 0); +// Consider using a sandboxed execution environment +// or implement proper code validation before execution +setTimeout(() => { + try { + // Add validation and sandboxing here + new Function(code)(); + } catch (error) { + console.error('Code execution error:', error); + } +}, 0); Apply / Chat Suggestion importance[1-10]: 10 __ Why: The suggestion correctly identifies a critical security vulnerability by pointing out the use of eval() on potentially untrusted code, which could lead to severe exploits.	High
General	Avoid removing existing scripts Removing existing scripts before loading new ones could break functionality if other components depend on those scripts. Consider checking if the script is already loaded instead of removing it. src/routes/chat/[agentId]/[conversationId]/rich-content/rc-js-interpreter.svelte [73-76] const found = Array.from(curScripts).find(x => x.src === src); if (found) { - found.remove(); + // Script already loaded, resolve immediately + resolve(true); + return; } Apply / Chat Suggestion importance[1-10]: 8 __ Why: The suggestion correctly identifies a flawed logic that could break other components by removing a shared script, proposing a much safer and more efficient approach.	Medium
Possible issue	Add proper property validation The code assumes all filtered objects have a text property, but the filter only checks for truthiness. This could cause runtime errors if objects exist but don't have the expected structure. src/routes/chat/[agentId]/[conversationId]/rich-content/rc-js-interpreter.svelte [48] -const codeText = parsedText.filter(x => !!x.text).map(x => x.text).join(''); +const codeText = parsedText.filter(x => x && typeof x.text === 'string').map(x => x.text).join(''); Apply / Chat Suggestion importance[1-10]: 5 __ Why: The suggestion improves code robustness by adding a more explicit check for the existence and type of the text property, preventing potential runtime errors if the data structure is not as expected.	Low
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