Clean up lint warnings, replace unsafe any usages, and tidy tests

[evilz]

Motivation

• Reduce TypeScript/ESLint noise by addressing unused variables/imports and unsafe any types flagged by static analysis.
• Improve type-safety in the VS Code test mock and Markdown-it renderer to avoid any and potential runtime issues.
• Remove stale test scaffolding and commented code to make test suites clearer and reduce false positives.

Description

• Consume the unused Express error-handler parameter by adding void next to silence the "defined but never used" warning in src/RevealServer.ts.
• Replace any in the VS Code test mock with safer types (unknown and void) and tighten event/command/cancellation token signatures in src/test/__mocks__/vscode.ts.
• Remove an unused TextEditorRevealType import from src/RevealContext.ts and drop the unused FrontMatterResult import in src/SlideParser.ts, while explicitly consuming the partial parameter with void partial to avoid unused-argument warnings.
• Replace loose any[] token typing in the Markdown-it note renderer with Token from markdown-it, add null-safety checks, and update manipulation to use non-null assertions where appropriate in src/Markdown-it.ts.
• Clean test files by removing unused imports, eliminating commented-out test blocks, and simplifying a few test cases in src/test/UnitTests/* and src/test/suite/extension.test.ts.
• Add /* eslint-env node */ to jest.config.js to address environment-related lint messages.

Testing

• Ran npm run -s test-compile, which completed successfully.
• Ran unit tests with npm test -- --runInBand src/test/UnitTests, and all test suites passed (14 suites, 57 tests passed).
• Attempted npm run -s lint ., which failed due to an ESLint configuration/plugin incompatibility (plugin:sonarjs/recommended contains an unexpected top-level property name).

---

Codex Task

[sonarqubecloud]

Quality Gate passed

Issues
9 New issues
0 Accepted issues

Measures
0 Security Hotspots
16.7% Coverage on New Code
0.0% Duplication on New Code

See analysis details on SonarQube Cloud

[gemini-code-assist]

Code Review

This pull request focuses on code cleanup, type safety improvements, and resolving linting issues across the codebase. Key changes include replacing any with unknown or specific types, removing unused imports and variables, and adding void expressions to silence unused parameter warnings. Feedback was provided regarding the unsafe use of non-null assertions in the Markdown renderer and the handling of unused parameters in the slide parser.

[gemini-code-assist]

The use of non-null assertions (!) on tokens[idx + 1] and tokens[idx + 2] is unsafe. While the markdown-it parser typically produces a predictable sequence of tokens for paragraphs (open, inline, close), it is more robust to explicitly check for the existence of these tokens before accessing their properties. This ensures the renderer doesn't crash if the token stream is modified by other plugins or is otherwise unexpected.

    const currentToken = tokens[idx]
    const inlineToken = tokens[idx + 1] // text
    const closeToken = tokens[idx + 2]

    if (currentToken && inlineToken && inlineToken.content.startsWith(notesSeparator)) {
      currentToken.tag = 'aside'
      const classIndex = currentToken.attrIndex('class')

      if (classIndex < 0) {
        currentToken.attrPush(['class', notesClass]) // add new attribute
      } else if (currentToken.attrs) {
        currentToken.attrs[classIndex][1] = notesClass // replace value of existing attr
      }

      // remove "note:" from content
      inlineToken.content = inlineToken.content.replace(notesSeparator, '')
      if (inlineToken.children && inlineToken.children[0]) {
        inlineToken.children[0].content = inlineToken.children[0].content.replace(notesSeparator, '')
      }

      if (closeToken) {
        closeToken.tag = 'aside'
      }
    }

[gemini-code-assist]

The partial parameter is currently unused in the parse method. Using void partial silences the lint warning but leaves dead code in the codebase. If the parameter is not required by an interface or intended for future use, it should be removed from the method signature. If it must remain, consider prefixing it with an underscore (e.g., _partial) to signal it is intentionally unused.