index.js

import MaskedInput from 'react-text-mask';
window.MaskedInput = MaskedInput;

masked_input.cljs

(ns interop.masked-input
  (:require [reagent.core :as r]))

(def masked-input (r/adapt-react-class js/MaskedInput))

package.json

{
  ...
  "dependencies": {
    "react-text-mask": "^5.4.3",
    ...
  }
}

view.cljs

(defn masked-text-widget
  [{:keys [mask value placeholder disabled on-change on-blur]}]
  [masked-input/masked-input
   {:mask        mask
    :disabled    disabled
    :value       value
    :placeholder placeholder
    :on-change   on-change
    :on-blur     on-blur}])

(def date-mask #js [#"[0-3]" #"\d" "/" #"[0-2]" #"\d" "/" #"\d" #"\d" #"\d" #"\d"])