From 192ce541762f0b02533ac16b4bd96bc204407a68 Mon Sep 17 00:00:00 2001
From: Ed Sungik Choi <sungik.dev@gmail.com>
Date: Fri, 8 Sep 2023 11:43:42 +0900
Subject: [PATCH 1/3] feat(utils): add assert utils

---
 .../bezier-react/src/utils/assertUtils.ts     | 32 +++++++++++++++++++
 1 file changed, 32 insertions(+)
 create mode 100644 packages/bezier-react/src/utils/assertUtils.ts

diff --git a/packages/bezier-react/src/utils/assertUtils.ts b/packages/bezier-react/src/utils/assertUtils.ts
new file mode 100644
index 0000000000..e3ab109250
--- /dev/null
+++ b/packages/bezier-react/src/utils/assertUtils.ts
@@ -0,0 +1,32 @@
+export function isDev() {
+  return process.env.NODE_ENV !== 'production'
+}
+
+export function warn(message: string) {
+  if (isDev()) {
+    // eslint-disable-next-line no-console
+    console.warn(message)
+  }
+}
+
+class AssertionException extends Error {
+  constructor(message?: string) {
+    super()
+
+    this.name = 'AssertionException'
+    this.message = message ?? 'assertion failed'
+  }
+}
+
+export function assert(
+  predicate: boolean,
+  message?: string,
+): asserts predicate {
+  if (predicate) {
+    return
+  }
+
+  if (isDev()) {
+    throw new AssertionException(message)
+  }
+}

From 0a3bfc48c10b860c8bf74fb0a348ba8c1ee402af Mon Sep 17 00:00:00 2001
From: Ed Sungik Choi <sungik.dev@gmail.com>
Date: Fri, 8 Sep 2023 12:11:32 +0900
Subject: [PATCH 2/3] feat(utils): apply assert to createContext util

---
 packages/bezier-react/src/utils/reactUtils.ts | 9 ++++++---
 1 file changed, 6 insertions(+), 3 deletions(-)

diff --git a/packages/bezier-react/src/utils/reactUtils.ts b/packages/bezier-react/src/utils/reactUtils.ts
index edf2119be7..02d2dd023f 100644
--- a/packages/bezier-react/src/utils/reactUtils.ts
+++ b/packages/bezier-react/src/utils/reactUtils.ts
@@ -1,5 +1,7 @@
 import React from 'react'
 
+import { assert } from './assertUtils'
+
 export const getReactVersion = () => {
   const [major, minor, patch] = React.version.split('.').map(Number)
   return { major, minor, patch }
@@ -33,9 +35,10 @@ export function createContext<ContextValue extends StrictContextValue>(
   function useContext(consumerName?: any) {
     const contextValue = React.useContext(Context)
 
-    if (contextValue === null) {
-      throw new Error(`'${consumerName}' must be used within '${providerName}'`)
-    }
+    assert(
+      contextValue !== null,
+      `'${consumerName}' must be used within '${providerName}'`,
+    )
 
     return contextValue
   }

From ae2b52b9103aa0e4f81e1ea3ef9c9cda56f9ea4d Mon Sep 17 00:00:00 2001
From: Ed Sungik Choi <sungik.dev@gmail.com>
Date: Fri, 8 Sep 2023 12:17:45 +0900
Subject: [PATCH 3/3] feat(utils): rm export of isDev function

---
 packages/bezier-react/src/utils/assertUtils.ts | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/packages/bezier-react/src/utils/assertUtils.ts b/packages/bezier-react/src/utils/assertUtils.ts
index e3ab109250..686d5493b2 100644
--- a/packages/bezier-react/src/utils/assertUtils.ts
+++ b/packages/bezier-react/src/utils/assertUtils.ts
@@ -1,4 +1,4 @@
-export function isDev() {
+function isDev() {
   return process.env.NODE_ENV !== 'production'
 }