JavaScript Formatter

Yes, the formatter fully supports modern JavaScript including arrow functions, async/await, template literals, destructuring, spread/rest operators, optional chaining, nullish coalescing, and all ES6 through ES2024 features.

The analysis report includes function counts (regular, arrow, async), variable declarations, ES6+ feature usage, cyclomatic complexity, code quality metrics, and actionable recommendations.

Yes, the minifier removes whitespace, comments, and unnecessary characters while preserving functionality, producing optimized code ready for production deployment.

Yes, the formatter handles JSX syntax for React, Vue single-file component script blocks, and Angular TypeScript-compatible JavaScript with proper indentation and formatting.

The real-time syntax validator checks your JavaScript code for errors including missing brackets, invalid expressions, incorrect destructuring patterns, and other syntax issues before runtime.

Defaults track Prettier: 2-space indent, single quotes optional, semicolons on, trailing commas in multiline, 80-character print width. Prettier is the de facto standard - it ships as the default formatter in VS Code JavaScript projects and has essentially ended style debates by removing configuration rather than adding it.

Automatic semicolon insertion is respected, never exploited: statements the spec would join across a line break (starting with (, [, +, -, /, or `) get a defensive semicolon prefix preserved. Rewriting "use strict" directives or reordering directives would change semantics, so directives stay pinned at the top of their scope.

Template literal contents are never re-indented - the whitespace inside backticks is part of the string value, so changing it changes the program. JSX (when detected) is formatted structurally like HTML, but embedded expression containers {expr} keep their inner text untouched for the same reason.