misskey/packages/frontend/src/scripts/merge.ts
かっこかり f5459a25df
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 e12369ac13.

* Update pnpm-lock.yaml

---------

Co-authored-by: tamaina <tamaina@hotmail.co.jp>
Co-authored-by: syuilo <4439005+syuilo@users.noreply.github.com>
2024-02-16 15:39:48 +09:00

36 lines
1.3 KiB
TypeScript
Raw Blame History

This file contains ambiguous Unicode characters

This file contains Unicode characters that might be confused with other characters. If you think that this is intentional, you can safely ignore this warning. Use the Escape button to reveal them.

/*
* SPDX-FileCopyrightText: syuilo and misskey-project
* SPDX-License-Identifier: AGPL-3.0-only
*/
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);
}
/**
* 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: 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 DeepPartial<X[keyof X] & Record<string | number | symbol, unknown>>;
result[k] = deepMerge<typeof v>(child, v);
}
}
return result;
}
throw new Error('deepMerge: value and def must be pure objects');
}