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An authorization library that supports access control models like ACL, RBAC, ABAC in Node.JS

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[request_definition] r = sub, obj, act [policy_definition] p = priority, sub, obj, act, eft [role_definition] g = _, _ [policy_effect] e = priority(p.eft) || deny [matchers] m = g(r.sub, p.sub) && r.obj == p.obj && r.act == p.act