(fix) respect strict mode and shorthand options when formatting bindings (#325)

Fixes #321

Author: dummdidumm

CHANGELOG.md

@@ -3,6 +3,7 @@
 ## 2.8.1 (Unreleased)
 
 * (fix) format `{#await .. catch ..}..{/await}` correctly ([#323](https://github.com/sveltejs/prettier-plugin-svelte/issues/323)) 
+* (fix) respect strict mode and shorthand options when formatting bindings ([#321](https://github.com/sveltejs/prettier-plugin-svelte/issues/321)) 
 
 ## 2.8.0
 

src/print/index.ts

@@ -608,7 +608,10 @@ export function print(path: FastPath, options: ParserOptions, print: PrintFn): D
             return concat([
                 'bind:',
                 node.name,
-                node.expression.type === 'Identifier' && node.expression.name === node.name
+                node.expression.type === 'Identifier' &&
+                node.expression.name === node.name &&
+                options.svelteAllowShorthand &&
+                !options.svelteStrictMode
                     ? ''
                     : concat(['=', ...printJsExpression()]),
             ]);

test/formatting/samples/strict-mode-false/input.html

@@ -0,0 +1,8 @@
+<input value />
+<input value="string" />
+<input {value} />
+<input value={value} />
+<input value="{value}" />
+<input bind:value />
+<input bind:value={value} />
+<input bind:value="{value}" />

test/formatting/samples/strict-mode-false/output.html

@@ -0,0 +1,8 @@
+<input value />
+<input value="string" />
+<input {value} />
+<input {value} />
+<input {value} />
+<input bind:value />
+<input bind:value />
+<input bind:value />

test/formatting/samples/strict-mode-true/input.html

@@ -3,3 +3,6 @@
 <input {value} />
 <input value={value} />
 <input value="{value}" />
+<input bind:value />
+<input bind:value={value} />
+<input bind:value="{value}" />

test/formatting/samples/strict-mode-true/output.html

@@ -3,3 +3,6 @@
 <input value="{value}" />
 <input value="{value}" />
 <input value="{value}" />
+<input bind:value="{value}" />
+<input bind:value="{value}" />
+<input bind:value="{value}" />

test/printer/samples/allow-shorthand-false.html

@@ -1,3 +1,5 @@
 <input type="text" value={value} />
 
 <input type="text" data={data} />
+
+<input type="text" bind:value={value} />