react_ujs/react_ujs/src/getConstructor/fromRequireContext.js

Rails UJS for the react-rails gem

// Load React components by requiring them from "components/", for example:
//
// - "pages/index" -> `require("components/pages/index")`
// - "pages/show.Header" -> `require("components/pages/show").Header`
// - "pages/show.Body.Content" -> `require("components/pages/show").Body.Content`
//
module.exports = function(reqctx) {
  return function(className) {
    var parts = className.split(".")
    var filename = parts.shift()
    var keys = parts
    // Load the module:
    var component = reqctx("./" + filename)
    // Then access each key:
    keys.forEach(function(k) {
      component = component[k]
    })
    // support `export default`
    if (component.__esModule) {
      component = component["default"]
    }
    return component
  }
}