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In 2001 Douglas Crockford introduced JSMin, [1] which removed comments and whitespace from JavaScript code. [2] It was followed by YUI Compressor in 2007. [2] In 2009, Google opened up its Closure toolkit, including Closure Compiler which contained a source mapping feature together with a Firefox extension called Closure Inspector. [3]
There are two types of compression that can be applied to JavaScript scripts: Reduce the redundancy in the script (by removing comments, white space and shorten variable and functions names). This does not alter the behavior of the script. Compress the original script and create a new script that contains decompression code and compressed data.
The Amsterdam Compiler Kit (ACK) is a retargetable compiler suite and toolchain written by Andrew Tanenbaum and Ceriel Jacobs, since 2005 maintained by David Given. [1] It has frontends for the following programming languages : C , Pascal , Modula-2 , Occam , and BASIC .
Emscripten allows applications and libraries written in C or C++ to be compiled ahead of time and run efficiently in web browsers, typically at speeds comparable to or faster than interpreted or dynamically compiled JavaScript. It even emulates an entire POSIX operating system, enabling programmers to use functions from the C standard library ...
The Closure Compiler is a tool that attempts to compress and optimize JavaScript code, at the expense of human readability. Unlike an actual compiler, it does not compile from JavaScript to machine code but rather minifies JavaScript. The process executes the following steps: Parses the submitted JavaScript; Analyzes the JavaScript; Removes any ...
Bun is a JavaScript runtime, package manager, test runner and bundler built from scratch using the Zig programming language. [4] [5] It was designed by Jarred Sumner as a drop-in replacement for Node.js. Bun uses WebKit's JavaScriptCore as the JavaScript engine, [6] unlike Node.js and Deno, which both use V8.
Therefore, if a program makes several calls to the same function with the same arguments, the compiler can infer that the function's result only needs to be computed once. In languages where functions are allowed to have side effects, the compiler can restrict such optimization to functions that it can determine have no side effects.
Whole program optimization (WPO) is the compiler optimization of a program using information about all the modules in the program. Normally, optimizations are performed on a per module, "compiland", basis; but this approach, while easier to write and test and less demanding of resources during the compilation itself, does not allow certainty about the safety of a number of optimizations such ...