fix: add pug const mixin (#518)

fedorovvvv · web-flow · commit 0551a9b557ee · 2022-06-04T19:55:06.000+02:00
Closes #467
diff --git a/docs/preprocessing.md b/docs/preprocessing.md
@@ -290,7 +290,7 @@ Apart from those, the Pug preprocessor accepts:
 
 **Template blocks:**
 
-Some of Svelte's template syntax is invalid in Pug. `svelte-preprocess` provides some pug mixins to represent svelte's `{#...}{/...}` blocks: `+if()`, `+else()`, `+elseif()`, `+each()`, `+key()`, `+await()`, `+then()`, `+catch()`, `+html()`, `+debug()`.
+Some of Svelte's template syntax is invalid in Pug. `svelte-preprocess` provides some pug mixins to represent svelte's `{#...}{/...}` blocks: `+if()`, `+else()`, `+elseif()`, `+each()`, `+key()`, `+await()`, `+then()`, `+catch()`, `+html()`, `+const()`, `+debug()`.
 
 ```pug
 ul
diff --git a/src/transformers/pug.ts b/src/transformers/pug.ts
@@ -44,6 +44,9 @@ mixin catch(error)
 mixin html(expression)
 %_| {@html !{expression}}
 
+mixin const(expression)
+%_| {@const !{expression}}
+
 mixin debug(variables)
 %_| {@debug !{variables}}`.replace(
     /%_/g,
