DefinitelyTyped/types/js-beautify/js-beautify-tests.ts

let bCss = js_beautify.css("body{display:none;}");
bCss = js_beautify.css_beautify("body{display:none;}");

let bHtml = js_beautify.html("<div/>");
bHtml = js_beautify.html_beautify("<div/>");

let optHtml: HTMLBeautifyOptions = {};
let optCss: CSSBeautifyOptions = {};
let optjs: JsBeautifyOptions = {};

var simple: string = js_beautify("console.log('Hello world!');");
var full: string = js_beautify(
    "console.log('Hello world!');",
    {
        "indent_size": 4,
        "indent_char": " ",
        "eol": "\n",
        "indent_level": 0,
        "indent_with_tabs": false,
        "preserve_newlines": true,
        "max_preserve_newlines": 10,
        "jslint_happy": false,
        "space_after_anon_function": false,
        "brace_style": "collapse",
        "keep_array_indentation": false,
        "keep_function_indentation": false,
        "space_before_conditional": true,
        "space_in_empty_paren": true,
        "break_chained_methods": false,
        "eval_code": false,
        "unescape_strings": false,
        "wrap_line_length": 0,
        "wrap_attributes": "auto",
        "wrap_attributes_indent_size": 4,
        "end_with_newline": false
    }
);