Add static checker, phpunit config file

.gitignore

@@ -1,7 +1,3 @@
-.phan
 vendor
 .phpunit.result.cache
 composer.lock
-phpunit.xml
-phpstan.neon
-psalm.xml

.phan/config.php

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+<?php
+
+/**
+ * This configuration will be read and overlaid on top of the
+ * default configuration. Command line arguments will be applied
+ * after this file is read.
+ *
+ * @see src/Phan/Config.php
+ * See Config for all configurable options.
+ *
+ * A Note About Paths
+ * ==================
+ *
+ * Files referenced from this file should be defined as
+ *
+ * ```
+ *   Config::projectPath('relative_path/to/file')
+ * ```
+ *
+ * where the relative path is relative to the root of the
+ * project which is defined as either the working directory
+ * of the phan executable or a path passed in via the CLI
+ * '-d' flag.
+ */
+
+// use Phan\Config;
+
+return [
+	// If true, missing properties will be created when
+	// they are first seen. If false, we'll report an
+	// error message.
+	"allow_missing_properties" => false,
+
+	// Allow null to be cast as any type and for any
+	// type to be cast to null.
+	"null_casts_as_any_type" => false,
+
+	// Backwards Compatibility Checking
+	'backward_compatibility_checks' => true,
+
+	// Run a quick version of checks that takes less
+	// time
+	"quick_mode" => false,
+
+	// Only emit critical issues to start with
+	// (0 is low severity, 5 is normal severity, 10 is critical)
+	"minimum_severity" => 10,
+
+	// default false for include path check
+	"enable_include_path_checks" => true,
+	"include_paths" => [
+	],
+	'ignore_undeclared_variables_in_global_scope' => true,
+
+	"file_list" => [
+	],
+
+	// A list of directories that should be parsed for class and
+	// method information. After excluding the directories
+	// defined in exclude_analysis_directory_list, the remaining
+	// files will be statically analyzed for errors.
+	//
+	// Thus, both first-party and third-party code being used by
+	// your application should be included in this list.
+	'directory_list' => [
+		// Change this to include the folders you wish to analyze
+		// (and the folders of their dependencies)
+		'.'
+		// 'www',
+		// To speed up analysis, we recommend going back later and
+		// limiting this to only the vendor/ subdirectories your
+		// project depends on.
+		// `phan --init` will generate a list of folders for you
+	],
+
+
+	// A list of directories holding code that we want
+	// to parse, but not analyze
+	"exclude_analysis_directory_list" => [
+		'vendor',
+		'test'
+	],
+	'exclude_file_list' => [
+	],
+
+	// what not to show as problem
+	'suppress_issue_types' => [
+		// 'PhanUndeclaredMethod',
+		'PhanEmptyFile',
+	],
+
+	// Override to hardcode existence and types of (non-builtin) globals in the global scope.
+	// Class names should be prefixed with `\`.
+	//
+	// (E.g. `['_FOO' => '\FooClass', 'page' => '\PageClass', 'userId' => 'int']`)
+	'globals_type_map' => [],
+];

phpstan.neon

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+# PHP Stan Config
+
+parameters:
+	tmpDir: /tmp/phpstan-codeblocks-dotenv
+	level: max
+	paths:
+		- %currentWorkingDirectory%
+	excludePaths:
+		- vendor
+		- test

phpunit.xml

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+<phpunit
+    colors="true"
+    verbose="true"
+>
+</phpunit>

psalm.xml

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+<?xml version="1.0"?>
+<psalm
+    errorLevel="8"
+    resolveFromConfigFile="true"
+    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+    xmlns="https://getpsalm.org/schema/config"
+    xsi:schemaLocation="https://getpsalm.org/schema/config vendor/vimeo/psalm/config.xsd"
+>
+    <projectFiles>
+        <directory name="src" />
+        <ignoreFiles>
+            <directory name="vendor" />
+            <directory name="test" />
+        </ignoreFiles>
+    </projectFiles>
+</psalm>