@redocly/respect-core/lib/utils/deep-copy.js

API testing framework core

import { isPlainObject } from '@redocly/openapi-core';
export function deepCopy(value, visited = new WeakMap()) {
    if (!Array.isArray(value) && !isPlainObject(value)) {
        return value;
    }
    // Handle circular references
    if (visited.has(value)) {
        return visited.get(value);
    }
    if (value instanceof ArrayBuffer ||
        value instanceof File ||
        value instanceof Blob ||
        value instanceof FormData ||
        value instanceof Date ||
        value instanceof RegExp ||
        value instanceof Map ||
        value instanceof Set ||
        value instanceof URL ||
        value instanceof Error) {
        return value;
    }
    if (Array.isArray(value)) {
        const copiedArray = [];
        visited.set(value, copiedArray);
        for (let i = 0; i < value.length; i++) {
            copiedArray[i] = deepCopy(value[i], visited);
        }
        return copiedArray;
    }
    const copied = {};
    visited.set(value, copied);
    for (const key in value) {
        if (Object.prototype.hasOwnProperty.call(value, key)) {
            copied[key] = deepCopy(value[key], visited);
        }
    }
    return copied;
}
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