nolanlawson/optimize-js
Optimize Js
Optimize-js is a JavaScript parsing optimizer designed to reduce the time browsers spend pre-parsing scripts to improve initial execution speed. It transforms source code to minimize the overhead associated with browser parsing.
The project implements a technique that wraps function calls in parentheses to bypass initial pre-parsing and reduce double-parsing overhead. To maintain the utility of the transformed code, it includes a source map generator that links the optimized output back to the original source.
The toolset also includes performance benchmarking capabilities to measure the exact time a browser takes to parse files, allowing for the quantification of the impact of these optimizations.
Features
- JavaScript Optimizers and Minifiers - Provides a tool that transforms JavaScript source code to reduce browser pre-parsing overhead and improve execution speed.
- Source Map Generators - Generates source maps to ensure optimized production scripts can be debugged using the original source code.
- Bytecode-to-Source Mapping - Generates source maps that link optimized output back to original source lines for debugging.
- Parsing Optimizations - Utilizes parentheses-based wrapping to increase the efficiency of the browser parsing process.
- JavaScript Source Transformers - Transforms JavaScript source code through AST manipulation to reduce browser pre-parsing overhead.
- Parse-Bypass Wrapping - Wraps function calls in parentheses to bypass initial browser pre-parsing and reduce double-parsing overhead.
- Syntax Tree Transformers - Implements syntax tree transformers to identify and wrap specific function call patterns for optimization.
- Parse-Speed Benchmarking - Ships a utility for measuring the time a browser takes to parse files to evaluate optimizations.
- Parse-Time Profilers - Provides a utility for measuring the time browsers spend parsing files to evaluate optimization impact.
- Performance Benchmarks - Measures the exact time browsers take to parse scripts to validate the impact of optimizations.
- Browser-Based Execution Timing - Quantifies the actual time spent on parsing by executing optimized code in a real browser environment.
