NASA's Punk Music


    2.8.1 • Public • Published

    Prettier for Svelte 3 components

    Format your Svelte components using Prettier.


    • Format your HTML, CSS, and JavaScript using prettier
    • Format Svelte syntax, e.g. each loops, if statements, await blocks, etc.
    • Format the JavaScript expressions embedded in the Svelte syntax
      • e.g. expressions inside of {}, event bindings on:click="", and more

    How to use in VS Code and Atom

    This plugin comes with Svelte for VS Code and Svelte for Atom so just install the extension for your favorite editor and enjoy.

    If you want to customize some formatting behavior, see section "Options" below.

    Some of the extensions let you define options through extension-specific configuration. These settings are ignored however if there's any configuration file (.prettierrc for example) present.

    How to install manually

    npm i --save-dev prettier-plugin-svelte prettier

    How to use (CLI)

    Install prettier and prettier-plugin-svelte as dev dependencies in your project.

    Then format your code using Prettier CLI. You may need to add --plugin-search-dir=.

    prettier --write --plugin-search-dir=. ./**/*.html

    If you want to customize some formatting behavior, see section "Options" below.


    Configurations are optional

    Make a .prettierrc file in your project directory and add your preferred options to configure Prettier. When using Prettier through the CLI, you can also pass options through CLI flags, but a .prettierrc file is recommended.

    Svelte Sort Order

    Sort order for svelte:options, scripts, markup, and styles.

    Format: join the keywords options, scripts, markup, styles with a - in the order you want; or none if you don't want Prettier to reorder anything.

    Default CLI Override API Override
    options-scripts-markup-styles --svelte-sort-order <string> svelteSortOrder: <string>

    The options order option only exists since version 2. If you use version 1 of prettier-plugin-svelte, omit that option (so for example only write scripts-markup-styles).

    Svelte Strict Mode

    More strict HTML syntax: less self-closed tags, quotes in attributes, no attribute shorthand (overrules svelteAllowShorthand).


    <!-- svelteStrictMode: true -->
    <div foo="{bar}"></div>
    <!-- svelteStrictMode: false -->
    <div foo={bar} />
    Default CLI Override API Override
    false --svelte-strict-mode <bool> svelteStrictMode: <bool>

    Svelte Allow Shorthand

    Option to enable/disable component attribute shorthand if attribute name and expression are same.


    <!-- allowShorthand: true -->
    <input type="text" {value} />
    <!-- allowShorthand: false -->
    <input type="text" value={value} />
    Default CLI Override API Override
    true --svelte-allow-shorthand <bool> svelteAllowShorthand: <bool>

    Svelte Bracket New Line

    Deprecated since 2.5.0. Use Prettier 2.4.0 and bracketSameLine instead.

    Put the > of a multiline element on a new line. Roughly the Svelte equivalent of the jsxBracketSameLine rule. Setting this to false will have no effect for whitespace-sensitive tags (inline elements) when there's no whitespace between the > of the start tag and the inner content, or when there's no whitespace after the > of the end tag. You can read more about HTML whitespace sensitivity here. You can adjust whitespace sensitivity through this setting.


    <!-- before formatting -->
    <div pretend break>content</div>
    <!-- after formatting, svelteBracketNewLine true -->
    <!-- after formatting, svelteBracketNewLine false -->
    Default CLI Override API Override
    true --svelte-bracket-new-line <bool> svelteBracketNewLine: <bool>

    Svelte Indent Script And Style

    Whether or not to indent the code inside <script> and <style> tags in Svelte files. This saves an indentation level, but might break code folding in your editor.

    Default CLI Override API Override
    true --svelte-indent-script-and-style <bool> svelteIndentScriptAndStyle: <bool>

    .prettierrc example

      "svelteSortOrder" : "options-styles-scripts-markup",
      "svelteStrictMode": true,
      "svelteBracketNewLine": false,
      "svelteAllowShorthand": false,
      "svelteIndentScriptAndStyle": false

    Usage with Tailwind Prettier Plugin

    There's a Tailwind Prettier Plugin to format classes in a certain way. This plugin bundles prettier-plugin-svelte, so if you want to use the Tailwind plugin, uninstall prettier-plugin-svelte and use the Tailwind plugin instead. If you are using VS Code, make sure to have the Prettier extension installed and switch the default formatter for Svelte files to it.

    More info:


    Why is the closing or opening tag (> or <) hugging the inner tag or text?

    If you are wondering why this code

    <span><span>assume very long text</span></span>

    becomes this

          ><span>assume very long text</span

    it's because of whitespsace sensitivity. For inline elements (span, a, etc) it makes a difference when rendered if there's a space (or newline) between them. Since we don't know if your slot inside your Svelte component is surrounded by inline elements, Svelte components are treated as such, too. You can adjust this whitespace sensitivity through this setting. You can read more about HTML whitespace sensitivity here.


    npm i prettier-plugin-svelte

    DownloadsWeekly Downloads






    Unpacked Size

    253 kB

    Total Files


    Last publish


    • unwrittenfun
    • conduitry
    • dummdidumm