@rocketsofawesome/mirage/src/core/video/sources.base.js

import React from 'react'

export default class Sources {
  constructor(inSources) {
    this.sources = inSources
  }

  createSourceElement = (source, key = 0) => {
    try{
      if (typeof source === 'string') {
        const acceptedFormats = ['webm', 'ogv', 'mp4', 'mov', 'flv']
        const test = /\.([0-9a-z]{1,5})$/
        const result = test.exec(source)
        let format = result[1]
        if (!acceptedFormats.includes(format)) {
          console.warn(`An invalid file extension was provided for ${source}`)
        }
        if (format === 'ogv') {
          format = 'ogg'
        }
        return <source src={source} type={`video/${format}`} key={key} />
      } else {
        console.warn(`A string was not provided as a source for ${source}`)
      }
    } catch (err) {
      console.error(err)
    }
  }

  render = () => {
    try {
      let output = []
      if (Array.isArray(this.sources)){
        output = this.sources.map((source, index) => {
          return this.createSourceElement(source, index)
        })
      } else {
        output = [this.createSourceElement(this.sources, )]
      }
      return output
    } catch (err) {
      console.error(err)
    }
  }
}