es-set

An ES-spec-compliant Set shim/polyfill/replacement that works as far down as ES3

es-map

An ES-spec-compliant Map shim/polyfill/replacement that works as far down as ES3

date

ES spec-compliant `Date` shim/polyfill/replacement that works as far down as ES3

es-arraybuffer-base64

An ES-spec-compliant shim/polyfill/replacement for ArrayBuffer base64 methods that works as far down as ES3