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 bindingson:click=""
, and more
- e.g. expressions inside of
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.
npm i --save-dev prettier-plugin-svelte prettier
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 (Read more about prettier config files here)
and add your preferred configuration options. When using Prettier through the CLI, you can also pass options through CLI flags, but a .prettierrc
file is recommended.
Sort order for svelte:options
, scripts, markup, and styles.
Format: join the keywords options
, scripts
, markup
, styles
with a -
in the order you want.
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 ofprettier-plugin-svelte
, omit that option (so for example only writescripts-markup-styles
).
More strict HTML syntax: less self-closed tags, quotes in attributes, no attribute shorthand (overrules svelteAllowShorthand
).
Example:
<!-- svelteStrictMode: true -->
<div foo="{bar}"></div>
<!-- svelteStrictMode: false -->
<div foo={bar} />
Default | CLI Override | API Override |
---|---|---|
false |
--svelte-strict-mode <bool> |
svelteStrictMode: <bool> |
Option to enable/disable component attribute shorthand if attribute name and expression are same.
Example:
<!-- 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> |
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.
Example:
<!-- before formatting -->
<span><div>foo</div><span>bar</span></span>
<div pretend break>content</div>
<!-- after formatting, svelteBracketNewLine true -->
<span
><div>foo</div>
<span>bar</span></span
>
<div
pretend
break
>
content
</div>
<!-- after formatting, svelteBracketNewLine false -->
<span
><div>foo</div>
<span>bar</span></span>
<div
pretend
break>
content
</div>
Default | CLI Override | API Override |
---|---|---|
true |
--svelte-bracket-new-line <bool> |
svelteBracketNewLine: <bool> |
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> |
{
"svelteSortOrder" : "options-styles-scripts-markup",
"svelteStrictMode": true,
"svelteBracketNewLine": false,
"svelteAllowShorthand": false,
"svelteIndentScriptAndStyle": false
}