react-native-surveys/Forms/api/react-dropzone/attr-accept/index.js

Build your own forms, surveys and polls for your React Native apps.

import "core-js/fn/array/some";
import "core-js/fn/string/ends-with";
export default function(file, acceptedFiles) {
  if (file && acceptedFiles) {
    const acceptedFilesArray = Array.isArray(acceptedFiles)
      ? acceptedFiles
      : acceptedFiles.split(",");
    const fileName = file.name || "";
    const mimeType = file.type || "";
    const baseMimeType = mimeType.replace(/\/.*$/, "");
    return acceptedFilesArray.some(type => {
      const validType = type.trim();

      if (validType.charAt(0) === ".") {
        return fileName.toLowerCase().endsWith(validType.toLowerCase());
      } else if (validType.endsWith("/*")) {
        // This is something like a image/* mime type
        return baseMimeType === validType.replace(/\/.*$/, "");
      }

      return mimeType === validType;
    });
  }

  return true;
}