mirror of
https://github.com/Start9Labs/start-os.git
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d6b81f3c9b
- Fix parseInt callback in container-runtime to avoid extra map arguments - Use proper error propagation in list_service_interfaces instead of unwrap_or_default - Handle non-plain objects by reference in deepEqual
50 lines
1.5 KiB
TypeScript
50 lines
1.5 KiB
TypeScript
/**
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* Performs a deep structural equality check across all provided arguments.
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* Returns true only if every argument is deeply equal to every other argument.
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* Handles primitives, arrays, and plain objects (JSON-like) recursively.
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*
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* Non-plain objects (Set, Map, Date, etc.) are compared by reference only,
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* since Object.keys() does not enumerate their contents.
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*
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* @param args - Two or more values to compare for deep equality
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* @returns True if all arguments are deeply equal
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*
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* @example
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* ```ts
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* deepEqual({ a: 1 }, { a: 1 }) // true
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* deepEqual([1, 2], [1, 2], [1, 2]) // true
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* deepEqual({ a: 1 }, { a: 2 }) // false
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* ```
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*/
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export function deepEqual(...args: unknown[]) {
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const objects = args.filter(
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(x): x is object => typeof x === 'object' && x !== null,
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)
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if (objects.length === 0) {
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for (const x of args) if (x !== args[0]) return false
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return true
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}
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if (objects.length !== args.length) return false
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if (objects.some(Array.isArray) && !objects.every(Array.isArray)) return false
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if (
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objects.some(
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(x) => !Array.isArray(x) && Object.getPrototypeOf(x) !== Object.prototype,
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)
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) {
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return (
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objects.reduce<object | null>(
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(a, b) => (a === b ? a : null),
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objects[0],
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) !== null
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)
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}
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const allKeys = new Set(objects.flatMap((x) => Object.keys(x)))
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for (const key of allKeys) {
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for (const x of objects) {
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if (!(key in x)) return false
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if (!deepEqual((objects[0] as any)[key], (x as any)[key])) return false
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}
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}
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return true
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}
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