set.prototype.issupersetof

An ESnext spec-compliant `Set.prototype.isSupersetOf` shim/polyfill/replacement that works as far down as ES3

v1.1.3 URL: https://unpkg.com/set.prototype.issupersetof@1.1.3/index.js

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javascript ecmascript polyfill shim Set Set.prototype.isSupersetOf isSupersetOf superset es-shim API es-shims