Wikimedia\Minify\JavaScriptMinifier Class Reference

JavaScript Minifier. More...

Static Public Member Functions
static	minify ( $s, $onError=null)
	Returns minified JavaScript code.
static	createMinifier ()
	Create a minifier state object without source map capabilities.
static	createSourceMapState ()
	Create a minifier state object with source map capabilities.
static	createIdentityMinifier ()
	Create a MinifierState that doesn't actually minify.
static	minifyInternal ( $s, $mapGenerator=null, $onError=null, $onDebug=null)
	Minify with optional source map.

Detailed Description

JavaScript Minifier.

This class is meant to safely minify JavaScript code, while leaving syntactically correct programs intact. Other libraries, such as JSMin require a certain coding style to work correctly. OTOH, libraries like jsminplus, that do parse the code correctly are rather slow, because they construct a complete parse tree before outputting the code minified. So this class is meant to allow arbitrary (but syntactically correct) input, while being fast enough to be used for on-the-fly minifying.

This class was written with ECMA-262 8th Edition in mind ("ECMAScript 2017"). Parsing features new to later editions of ECMAScript might not be supported. It's assumed that the input is syntactically correct; if it's not, this class may not detect that, and may produce incorrect output.

See also:

• https://262.ecma-international.org/8.0/
• https://262.ecma-international.org/10.0/
• https://262.ecma-international.org/11.0/

Member Function Documentation

createIdentityMinifier()

static Wikimedia\Minify\JavaScriptMinifier::createIdentityMinifier ( )

static

Create a MinifierState that doesn't actually minify.

Returns

IdentityMinifierState

createMinifier()

static Wikimedia\Minify\JavaScriptMinifier::createMinifier ( )

static

Create a minifier state object without source map capabilities.

Example:

JavaScriptMinifier::createMinifier() ->addSourceFile( 'file.js', $source ) ->getMinifiedOutput();

Returns

JavaScriptMinifierState

createSourceMapState()

static Wikimedia\Minify\JavaScriptMinifier::createSourceMapState ( )

static

Create a minifier state object with source map capabilities.

Example:

$mapper = JavaScriptMinifier::createSourceMapState() ->addSourceFile( 'file1.js', $source1 ) ->addOutput( "\n\n" ) ->addSourceFile( 'file2.js', $source2 ); $out = $mapper->getMinifiedOutput(); $map = $mapper->getSourceMap()

Returns

JavaScriptMapperState

minify()

static Wikimedia\Minify\JavaScriptMinifier::minify ( $s, $onError = null )

static

Returns minified JavaScript code.

See also

MinifierState::setErrorHandler

Parameters

string	$s	JavaScript code to minify
callable | null	$onError	Called with a ParseError object

Returns

string Minified code

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The documentation for this class was generated from the following file:

• src/JavaScriptMinifier.php