component - CSVをエクスポートするやつ

component.ts

    private downloadFile(data: any) {

        var blob = new Blob([(<any>data)], { type: "text/csv" });
        let csvFileName = "日本語ファイル名称.csv";

        if (window.navigator.msSaveOrOpenBlob) {
            //IEの場合
            navigator.msSaveBlob(blob, csvFileName);
        } else {
            //IE以外(Chrome, Firefox)
            let link = document.createElement("a");
            link.setAttribute("href", window.URL.createObjectURL(blob));

            link.setAttribute("download", csvFileName);
            document.body.appendChild(link);

            link.click();
            link.remove();
        }
    }