JS Minifier/Beautifier

A JS minifier/beautifier formats JavaScript for reading (beautify) or strips whitespace and comments to shrink file size (minify). Real-world minifiers like terser or esbuild go further — renaming identifiers, eliminating dead code, rewriting expressions — but doing that correctly requires a full parser and scope analysis, and getting it even slightly wrong can silently break working code. toco.tools's JS minifier deliberately doesn't go that far. It only removes comments and whitespace: identifiers are never renamed, and the code's structure and expressions are never rewritten. It also specifically guards against JavaScript's ASI (Automatic Semicolon Insertion) hazard: wherever the original source had one or more newlines, the tool always preserves exactly one. Deleting a newline right after `return`, for example, can silently turn `return; x;` into `return x;` — instead of trying to detect every case where that's unsafe, this simple, bulletproof rule prevents it categorically. String literals, template literals (including `${...}` interpolation), and regular expression literals are preserved byte-for-byte, and bang comments (`/*! ... */`), commonly used for license headers, always survive minification. Being explicit about this tool's limits is the whole point — it's the trust signal. When you need maximum compression (identifier shortening, dead-code elimination) for a production build, reach for a real bundler-integrated minifier like terser or esbuild.