Features/add js interpreter

[iceljc]

PR Type

Enhancement

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Description

• Add JavaScript interpreter for executing code in chat messages

• Create new rich content component for JS code rendering

• Integrate JS interpreter with existing message display system

• Refactor rich content structure for better organization

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Changes diagram

flowchart LR
  A["Chat Message"] --> B["Rich Content Router"]
  B --> C["JS Interpreter Component"]
  C --> D["Code Execution"]
  D --> E["Chart Rendering"]
  B --> F["Standard Markdown"]

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Changes walkthrough 📝

	Relevant files
Enhancement	enums.js Add JS code rich type enum                                                              src/lib/helpers/enums.js Add JsCode enum value to richType object +2/-1      rc-js-interpreter.svelte Create JavaScript interpreter component                                    src/routes/chat/[agentId]/[conversationId]/rich-content/rc-js-interpreter.svelte Create new Svelte component for JavaScript code interpretation Implement code parsing from markdown using marked library Add scrollable container with custom scrollbar styling Execute JavaScript code using eval() for chart rendering +60/-0    rc-message.svelte Integrate JS interpreter into message display                        src/routes/chat/[agentId]/[conversationId]/rich-content/rc-message.svelte Import and integrate JS interpreter component Add conditional rendering for JS code rich type Improve type annotations and text extraction logic Add conditional wrapper rendering +18/-8
Formatting	rich-content.svelte Refactor rich content conditional rendering                            src/routes/chat/[agentId]/[conversationId]/rich-content/rich-content.svelte Refactor conditional rendering structure using {:else} syntax Remove redundant conditional blocks for cleaner code +3/-3

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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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