Unable to parse files that contain namespaces and variables passed by reference

If I place a single use statement at the top of a file, none of the actions or filters get parsed.

This wouldn't find the example filter:

<?php // Just an example
use GV\Utils;

apply_filters( 'example', 'just an' );

But this would:

<?php // Just an example

apply_filters( 'example', 'just an' );

This also applies to namespaces inside _deprecated_function() calls. This blocks all filters for the file:

_deprecated_function( __METHOD__, '2.0', '\GV\Widget::registered()' );

but removing the namespace fixes it:

_deprecated_function( __METHOD__, '2.0', 'Widget::registered()' );

Same with variables passed by reference. This blocks all parsing for a file:

foreach( $examples as &$example ) {

and this works:

foreach( $examples as $example ) {

When running the command (./vendor/bin/wp-hooks-generator --input ./ --output docs), I get many errors like this:

Warning: Undefined array key 265 in [path]/wp-content/plugins/GravityView/vendor/nikic/php-parser/lib/PhpParser/Lexer.php on line 195

Warning: Undefined array key "" in [path]/wp-content/plugins/GravityView/vendor/nikic/php-parser/lib/PhpParser/ParserAbstract.php on line 173

Warning: Undefined array key "" in [path]/wp-content/plugins/GravityView/vendor/nikic/php-parser/lib/PhpParser/ParserAbstract.php on line 335
Parse Error: Syntax error, unexpected , expecting T_STRING or T_NS_SEPARATOR or '{' on line 10

Here's my composer.json and composer.lock file. Hopefully that helps. Please let me know if I'm able to help figure out what's going on here.

wp-hooks / generator

Unable to parse files that contain namespaces and variables passed by reference #17