From 6981e324091f810f1ed88760a9f76f1537b81b9e Mon Sep 17 00:00:00 2001
From: Elian Doran <contact@eliandoran.me>
Date: Sun, 30 Jun 2024 20:15:48 +0300
Subject: [PATCH] Remove usage of `assert.invariant`

This reduces dependencies when building for the browser target, since
the assert module is a Node.js dependency.
---
 src/helpers.ts     | 11 +++++++++++
 src/serialize.ts   |  3 +--
 src/unserialize.ts |  3 +--
 3 files changed, 13 insertions(+), 4 deletions(-)

diff --git a/src/helpers.ts b/src/helpers.ts
index 1a7be12..cd18580 100644
--- a/src/helpers.ts
+++ b/src/helpers.ts
@@ -30,3 +30,14 @@ export function getClass(prototype: Record<string, any>) {
   PhpClass.prototype = prototype
   return PhpClass
 }
+
+/**
+ * Ensures that the given {@link value} is truthy, throws an {@link Error} otherwise.
+ * @param value the value to check to be truthy.
+ * @param message the message of the {@link Error} if the value is falsy.
+ */
+export function invariant(value: any, message?: string) {
+  if (!value) {
+    throw new Error(message)
+  }
+}
diff --git a/src/serialize.ts b/src/serialize.ts
index 3acc170..50eab3f 100644
--- a/src/serialize.ts
+++ b/src/serialize.ts
@@ -1,5 +1,4 @@
-import invariant from 'assert'
-import { isInteger, getByteLength } from './helpers'
+import { isInteger, getByteLength, invariant } from './helpers'
 
 function getClassNamespace(item: any, scope: Record<string, any>) {
   return (
diff --git a/src/unserialize.ts b/src/unserialize.ts
index ca7025d..1a1dc1b 100644
--- a/src/unserialize.ts
+++ b/src/unserialize.ts
@@ -1,7 +1,6 @@
-import invariant from 'assert'
 // eslint-disable-next-line import/no-cycle
 import Parser from './parser'
-import { isInteger, getClass, getIncompleteClass, __PHP_Incomplete_Class } from './helpers'
+import { isInteger, getClass, getIncompleteClass, __PHP_Incomplete_Class, invariant } from './helpers'
 
 export type Options = {
   strict: boolean