DefinitelyTyped/types/react-native-mail/index.d.ts

// Type definitions for react-native-mail 3.0
// Project: https://github.com/chirag04/react-native-mail#readme
// Definitions by: DELACOURT Vincent <https://github.com/vdelacou>
// Definitions: https://github.com/DefinitelyTyped/DefinitelyTyped

export namespace Mailer {
    function mail(options: {
        subject: string;
        body: string;
        isHTML: boolean;
        recipients?: [string];
        ccRecipients?: [string];
        bccRecipients?: [string];
        attachment?: {
            /**
             * The absolute path of the file from which to read data.
             */
            path: string;
            /**
             * Mime Type: jpg, png, doc, ppt, html, pdf, csv
             */
            type: string;
            /**
             * Optional: Custom filename for attachment
             */
            name?: string;
        };
    }, callback: (
        error: string,
        /**
         * On Android, the callback will only be called if an error occurs. The event argument is unused!
         */
        event: string
    ) => void): void;
}

export default Mailer;