fix(frontend): vue v3.4.16以降でタイムラインが正常に表示できない問題を修正 (#13248)

* fix(frontend): vue v3.4.16でタイムラインが正常に表示できない問題を修正

* type

* Revert "fix: downgrade vue to 3.4.15"

This reverts commit e12369ac13a906321397dfee5142f2af4b12f5b6.

* Update pnpm-lock.yaml

---------

Co-authored-by: tamaina <tamaina@hotmail.co.jp>
Co-authored-by: syuilo <4439005+syuilo@users.noreply.github.com>

1 files changed, 7 insertions, 3 deletions

diff --git a/packages/frontend/src/scripts/merge.ts b/packages/frontend/src/scripts/merge.ts
index 3dc13aca49..4e39a0fa06 100644
--- a/packages/frontend/src/scripts/merge.ts
+++ b/packages/frontend/src/scripts/merge.ts
@@ -6,6 +6,10 @@
 import { deepClone } from './clone.js';
 import type { Cloneable } from './clone.js';
 
+type DeepPartial<T> = {
+	[P in keyof T]?: T[P] extends Record<string | number | symbol, unknown> ? DeepPartial<T[P]> : T[P];
+};
+
 function isPureObject(value: unknown): value is Record<string | number | symbol, unknown> {
 	return typeof value === 'object' && value !== null && !Array.isArray(value);
 }
@@ -14,18 +18,18 @@ function isPureObject(value: unknown): value is Record<string | number | symbol,
  * valueにないキーをdefからもらう（再帰的）\
  * nullはそのまま、undefinedはdefの値
  **/
-export function deepMerge<X extends Record<string | number | symbol, unknown>>(value: X, def: X): X {
+export function deepMerge<X extends Record<string | number | symbol, unknown>>(value: DeepPartial<X>, def: X): X {
 	if (isPureObject(value) && isPureObject(def)) {
 		const result = deepClone(value as Cloneable) as X;
 		for (const [k, v] of Object.entries(def) as [keyof X, X[keyof X]][]) {
 			if (!Object.prototype.hasOwnProperty.call(value, k) || value[k] === undefined) {
 				result[k] = v;
 			} else if (isPureObject(v) && isPureObject(result[k])) {
-				const child = deepClone(result[k] as Cloneable) as X[keyof X] & Record<string | number | symbol, unknown>;
+				const child = deepClone(result[k] as Cloneable) as DeepPartial<X[keyof X] & Record<string | number | symbol, unknown>>;
 				result[k] = deepMerge<typeof v>(child, v);
 			}
 		}
 		return result;
 	}
-	return value;
+	throw new Error('deepMerge: value and def must be pure objects');
 }