41 lines
1.2 KiB
TypeScript
41 lines
1.2 KiB
TypeScript
/*
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* SPDX-FileCopyrightText: syuilo and misskey-project
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* SPDX-License-Identifier: AGPL-3.0-only
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*/
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type JsonLike = string | number | boolean | null | undefined | JsonLike[] | { [key: string]: JsonLike } | Map<string, JsonLike>;
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export function deepEqual(a: JsonLike, b: JsonLike): boolean {
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if (a === b) return true;
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if (typeof a !== typeof b) return false;
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if (a === null) return b === null;
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if (a === undefined) return b === undefined;
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if (Array.isArray(a) && Array.isArray(b)) {
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if (a.length !== b.length) return false;
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for (let i = 0; i < a.length; i++) {
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if (!deepEqual(a[i], b[i])) return false;
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}
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return true;
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} else if (a instanceof Map && b instanceof Map) {
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if (a.size !== b.size) return false;
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for (const [k, v] of a) {
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if (!deepEqual(v, b.get(k))) return false;
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}
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return true;
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} else if (((typeof a) === 'object') && ((typeof b) === 'object')) {
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const aks = Object.keys(a);
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const bks = Object.keys(b as { [key: string]: JsonLike });
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if (aks.length !== bks.length) return false;
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for (let i = 0; i < aks.length; i++) {
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const k = aks[i];
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if (!deepEqual(a[k], (b as { [key: string]: JsonLike })[k])) return false;
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}
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return true;
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}
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return false;
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}
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