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refactor

This commit is contained in:
kakkokari-gtyih 2024-12-28 17:48:53 +09:00
parent 3ae17b7217
commit 10017fad24
1 changed files with 4 additions and 4 deletions
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8
packages/frontend/src/scripts/merge.ts
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@ -7,10 +7,10 @@ import { deepClone } from './clone.js';
import type { Cloneable } from './clone.js';
export type DeepPartial<T> = {
[P in keyof T]?: T[P] extends Record<string | number | symbol, unknown> ? DeepPartial<T[P]> : T[P];
[P in keyof T]?: T[P] extends Record<PropertyKey, unknown> ? DeepPartial<T[P]> : T[P];
};
function isPureObject(value: unknown): value is Record<string | number | symbol, unknown> {
function isPureObject(value: unknown): value is Record<PropertyKey, unknown> {
return typeof value === 'object' && value !== null && !Array.isArray(value);
}
@ -18,14 +18,14 @@ 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: DeepPartial<X>, def: X): X {
export function deepMerge<X extends Record<PropertyKey, 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.hasOwn(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>>;
const child = deepClone(result[k] as Cloneable) as DeepPartial<X[keyof X] & Record<PropertyKey, unknown>>;
result[k] = deepMerge<typeof v>(child, v);
}
}