diff --git a/packages/bytemd/build.mjs b/packages/bytemd/scripts/build.mjs
similarity index 82%
rename from packages/bytemd/build.mjs
rename to packages/bytemd/scripts/build.mjs
index 9db9db5..a9a70d4 100644
--- a/packages/bytemd/build.mjs
+++ b/packages/bytemd/scripts/build.mjs
@@ -5,18 +5,7 @@ import { preprocess } from 'svelte/compiler'
 import glob from 'fast-glob'
 import { build } from 'vite'
 import { resolveModule } from 'local-pkg'
-import sveltePreprocess from 'svelte-preprocess'
-
-export const sveltePreprocessor = sveltePreprocess({
-  typescript: true,
-  // https://github.com/sveltejs/svelte/issues/189#issuecomment-586142198
-  replace: [
-    [/(>)[\s]*([<{])/g, '$1$2'],
-    [/({[/:][a-z]+})[\s]*([<{])/g, '$1$2'],
-    [/({[#:][a-z]+ .+?})[\s]*([<{])/g, '$1$2'],
-    [/([>}])[\s]+(<|{[/#:][a-z][^}]*})/g, '$1$2'],
-  ],
-})
+import { sveltePreprocessor } from './utils.mjs'
 
 const pkgName = 'decode-named-character-reference'
 const resolveOptions = {
diff --git a/packages/bytemd/scripts/utils.mjs b/packages/bytemd/scripts/utils.mjs
new file mode 100644
index 0000000..4bd6752
--- /dev/null
+++ b/packages/bytemd/scripts/utils.mjs
@@ -0,0 +1,13 @@
+// @ts-check
+import sveltePreprocess from 'svelte-preprocess'
+
+export const sveltePreprocessor = sveltePreprocess({
+  typescript: true,
+  // https://github.com/sveltejs/svelte/issues/189#issuecomment-586142198
+  replace: [
+    [/(>)[\s]*([<{])/g, '$1$2'],
+    [/({[/:][a-z]+})[\s]*([<{])/g, '$1$2'],
+    [/({[#:][a-z]+ .+?})[\s]*([<{])/g, '$1$2'],
+    [/([>}])[\s]+(<|{[/#:][a-z][^}]*})/g, '$1$2'],
+  ],
+})
diff --git a/packages/bytemd/tsdv.config.mjs b/packages/bytemd/tsdv.config.mjs
index 6d2dd6f..055423e 100644
--- a/packages/bytemd/tsdv.config.mjs
+++ b/packages/bytemd/tsdv.config.mjs
@@ -1,7 +1,7 @@
 // @ts-check
 import { defineConfig } from 'tsdv'
 import { svelte } from '@sveltejs/vite-plugin-svelte'
-import { sveltePreprocessor } from './build.mjs'
+import { sveltePreprocessor } from './scripts/utils.mjs'
 
 // nullish coalescing in es2020
 // TODO: 'decode-named-character-reference'