Function pickerOptionsFromAccept

src/utils/index.js:237–275

(accept)

 * @returns {{accept: string[]}[]}
 */
export function pickerOptionsFromAccept(accept) {
  if (isDefined(accept)) {
    const acceptForPicker = Object.entries(accept)
      .filter(([mimeType, ext]) => {
        let ok = true;

        if (!isMIMEType(mimeType)) {
          console.warn(
            `Skipped "${mimeType}" because it is not a valid MIME type. Check https://developer.mozilla.org/en-US/docs/Web/HTTP/Basics_of_HTTP/MIME_types/Common_types for a list of valid MIME types.`
          );
          ok = false;
        }

        if (!Array.isArray(ext) || !ext.every(isExt)) {
          console.warn(
            `Skipped "${mimeType}" because an invalid file extension was provided.`
          );
          ok = false;
        }

        return ok;
      })
      .reduce(
        (agg, [mimeType, ext]) => ({
          ...agg,
          [mimeType]: ext,
        }),
        {}
      );
    return [
      {
        // description is required due to https://crbug.com/1264708
        description: "Files",
        accept: acceptForPicker,
      },
    ];
  }
  return accept;
}

/**
 * Convert the `{accept}` dropzone prop to an array of MIME types/extensions.