Merge pull request #28

Extract `removeImages` function to `strings.ts` and update references in `preview.ts` for better code reuse.

Author: andrey-helldar

src/utils/preview.ts

@@ -1,15 +1,9 @@
 import { getImages } from "./image";
 import type { Config } from "../types/config";
-import { titleCase } from "./strings";
+import { removeImages, titleCase } from "./strings";
 
 const hasHeader = (content: string) => content.match(/^#\s+/);
 
-const cleanUp = (content: string): string =>
-    content
-        .replace(/^(#\s+.+[\n\s]+)\s*<picture>[.\w\W]+<\/picture>[\n\s]*/, "$1")
-        .replace(/^(#\s+.+[\n\s]+)(!\[.+]\(.*\)\n?){1,2}[\n\s]*/, "$1")
-        .replace(/^(#\s+.+[\n\s]+)(<img\s.*\/>\n?){1,2}[\n\s]*/, "$1");
-
 export const setPreview = (content: string, config: Config) => {
     if (!hasHeader(content)) {
         const title = titleCase(config.image.parameters.title);
@@ -21,7 +15,7 @@ export const setPreview = (content: string, config: Config) => {
 
     const replace = "$1";
 
-    return cleanUp(content).replace(
+    return removeImages(content).replace(
         /^(#\s+.+[\n\s]+)/,
         `${replace}${images}\n\n`,
     );

src/utils/strings.ts

@@ -10,6 +10,12 @@ export const titleCase = (title: string | undefined) => {
         .replace(/[-_]/g, " ");
 };
 
+export const removeImages = (content: string): string =>
+    content
+        .replace(/^(#\s+.+[\n\s]+)\s*<picture>[.\w\W]+<\/picture>[\n\s]*/, "$1")
+        .replace(/^(#\s+.+[\n\s]+)(!\[.+]\(.*\)\n?){1,2}[\n\s]*/, "$1")
+        .replace(/^(#\s+.+[\n\s]+)(<img\s.*\/>\n?){1,2}[\n\s]*/, "$1");
+
 export const encodeUri = (value: string | undefined): string => {
     if (value === "" || value === undefined) {
         return "";