enhance(frontend): シンタックスハイライトにテーマを適用できるように (#13175)
* enhance(frontend): シンタックスハイライトにテーマを適用できるように * Update Changelog * こっちも * テーマの値がディープマージされるように * 常にテーマ設定に準じるように * テーマ更新時に新しいshikiテーマを読み込むように
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31
packages/frontend/src/scripts/merge.ts
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31
packages/frontend/src/scripts/merge.ts
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/*
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* SPDX-FileCopyrightText: syuilo and other misskey contributors
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* SPDX-License-Identifier: AGPL-3.0-only
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*/
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import { deepClone } from './clone.js';
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import type { Cloneable } from './clone.js';
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function isPureObject(value: unknown): value is Record<string | number | symbol, unknown> {
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return typeof value === 'object' && value !== null && !Array.isArray(value);
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}
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/**
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* valueにないキーをdefからもらう(再帰的)\
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* nullはそのまま、undefinedはdefの値
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**/
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export function deepMerge<X extends Record<string | number | symbol, unknown>>(value: X, def: X): X {
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if (isPureObject(value) && isPureObject(def)) {
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const result = deepClone(value as Cloneable) as X;
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for (const [k, v] of Object.entries(def) as [keyof X, X[keyof X]][]) {
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if (!Object.prototype.hasOwnProperty.call(value, k) || value[k] === undefined) {
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result[k] = v;
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} else if (isPureObject(v) && isPureObject(result[k])) {
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const child = deepClone(result[k] as Cloneable) as X[keyof X] & Record<string | number | symbol, unknown>;
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result[k] = deepMerge<typeof v>(child, v);
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}
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}
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return result;
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}
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return value;
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}
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