#Javascript minify source map code

In 2010, Mihai Bazon introduced UglifyJS, which was superseded by UglifyJS2 in 2012 the rewrite was to allow for source map support. 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. It was followed by YUI Compressor in 2007. In 2001 Douglas Crockford introduced JSMin, which removed comments and whitespace from JavaScript code.

#Javascript minify source map code

If not supplied those details, the reversed source code will contain different variable names and control flow, even though it will have the same functionality as the original source code.ДЇor ( var a = i < 20 a = i ++ ) History When minification uses such techniques, the pretty-printer or unminifier can only fully reverse the minification process if it is supplied details of the transformations done by such techniques. However, to achieve its goals, minification sometimes uses techniques also used by obfuscation for example, shortening variable names and refactoring the source code. The goals of minification are not the same as the goals of obfuscation the former is often intended to be reversed using a pretty-printer or unminifier.

Minification can be distinguished from the more general concept of data compression in that the minified source can be interpreted immediately without the need for an uncompression step: the same interpreter can work with both the original as well as with the minified source. In programmer culture, aiming at extremely minified source code is the purpose of recreational code golf competitions. Minification reduces the size of the source code, making its transmission over a network (e.g. These unnecessary characters usually include white space characters, new line characters, comments, and sometimes block delimiters, which are used to add readability to the code but are not required for it to execute. Minification (also minimisation or minimization) is the process of removing all unnecessary characters from the source code of interpreted programming languages or markup languages without changing its functionality.