JavaScript Analyzer

A lightweight tool for developers to analyze JavaScript code, revealing patterns, complexity, and dependencies to improve quality and performance.

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100%
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4.9 / 5.0
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About This Tool

The JavaScript Analyzer is a code intelligence tool that delivers structural and behavioral insights without executing code. It parses source files into ASTs, computes complexity and size metrics, and maps module dependencies. Conceptually, it treats code as a graph of functions and modules and derives hotspots that signal maintenance risk. It benefits developers, QA engineers, and team leads by surfacing refactor opportunities, potential anti-patterns, and architectural signals for large codebases. Core value lies in its ability to combine static metrics with lightweight dynamic hints to inform testing and optimization plans. Use cases include pre-merge reviews, sprint planning, and targeted performance tuning, where teams need objective signals rather than ad-hoc impressions. Unique differentiators include per-file and repository-wide analysis, explicit call and dependency graphs, and actionable recommendations grounded in standard metrics. Core features include AST-based parsing, module resolution for ES Modules and CommonJS, cyclomatic complexity, function counts, unused variable detection, and dependency graphs. Optional advanced features cover call graph generation, cross-file impact assessment, and consistency checks for exports/imports. Output consists of machine-readable data and a concise summary suitable for dashboards and reports. The tool integrates with CI pipelines to produce determinable metrics and can drive refactoring decisions across teams. Use cases span code health assessments, maintainability scoring, and architectural planning for JavaScript applications.

How to Use

  1. Provide inputs: code text or file paths, language hint, and analysis scope.
  2. Choose mode: static analysis, dynamic hints, or both.
  3. Run analysis to generate metrics and graphs.
  4. Review outputs including per-file hotspots and overall trends.
  5. Export reports if needed.
How to use javascript analyzer

Frequently Asked Questions

Find Quick Answers

What does the JavaScript Analyzer examine?
It analyzes JavaScript source to measure structural quality, detect patterns, and highlight hotspots. It builds an AST, derives complexity metrics, uncovers dead code and unused variables, and maps module dependencies and call relationships. It focuses on maintainability and performance indicators.
What inputs does it accept?
Inputs include code text or file paths, optional language hints, and analysis scope (single file or repository). It supports ES modules and CommonJS; dynamic constructs may be flagged. Users can select static, dynamic hints, or a combined mode to tailor results.
What outputs are provided?
Outputs include a JSON metrics object with LOC, function count, complexity, hotspots, dependencies, and call graphs, plus a human-friendly summary. It also provides per-file diagnostics and a list of recommended refactor opportunities. Reports can be exported to CSV or HTML if enabled.
Is it a linter or security tool?
No. It does not execute code or modify sources. It provides advisory analytics about structure, patterns, and potential improvements to inform reviews and architectural decisions, rather than enforcing style rules or auditing for vulnerabilities.

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