mck89/peast
Peast is PHP library that generates AST for JavaScript code
Maintainers
Requires
- php: >=5.4.0
- ext-mbstring: *
Requires (Dev)
- phpunit/phpunit: ^4.0 || ^5.0 || ^6.0 || ^7.0 || ^8.0 || ^9.0
Suggests
None
Provides
None
Conflicts
None
Replaces
None
BSD-3-Clause b8b4184b1e6912669f9af155caef9050509d9f18
- Marco Marchiò <marco.mm89.woop@gmail.com>
This package is auto-updated.
Last update: 2026-05-24 08:08:21 UTC
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Peast (PHP ECMAScript Abstract Syntax Tree) is a PHP 5.4+ library that parses JavaScript code, according to ECMAScript specification, and generates an abstract syntax tree following the ESTree standard.
Installation
Include the following requirement to your composer.json:
{
"require": {
"mck89/peast": "dev-master"
}
}
Run composer install to install the package.
Then in your script include the autoloader and you can start using Peast:
require_once "vendor/autoload.php"; $source = "var a = 1"; // Your JavaScript code $ast = Peast\Peast::latest($source, $options)->parse(); // Parse it!
Known issues
When Xdebug is enabled and Peast is used to scan code that contains deeply nested functions, this fatal error can appear:
PHP Fatal error: Maximum function nesting level of '512' reached, aborting!
or
PHP Warning: Uncaught Error: Xdebug has detected a possible infinite loop, and aborted your script with a stack depth of '256' frames
To prevent this you can set xdebug.max_nesting_level to a higher value, such as 512.
Documentation
Read the documentation for more examples and explanations: