apollo-client/util/isEqual.js

A simple yet functional GraphQL client.

export function isEqual(a, b) {
    if (a === b) {
        return true;
    }
    if (a != null && typeof a === 'object' && b != null && typeof b === 'object') {
        for (var key in a) {
            if (a.hasOwnProperty(key)) {
                if (!b.hasOwnProperty(key)) {
                    return false;
                }
                if (!isEqual(a[key], b[key])) {
                    return false;
                }
            }
        }
        for (var key in b) {
            if (!a.hasOwnProperty(key)) {
                return false;
            }
        }
        return true;
    }
    return false;
}
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