From bd2b7e7579feed695d7bae0fc247124705365821 Mon Sep 17 00:00:00 2001
From: Alice Gaudon <alice@gaudon.pro>
Date: Wed, 28 Apr 2021 17:03:27 +0200
Subject: [PATCH] svelte render: simplify replaces

---
 src/frontend/SvelteViewEngine.ts | 38 +++++++-------------------------
 1 file changed, 8 insertions(+), 30 deletions(-)

diff --git a/src/frontend/SvelteViewEngine.ts b/src/frontend/SvelteViewEngine.ts
index 824cc46..e4fdde1 100644
--- a/src/frontend/SvelteViewEngine.ts
+++ b/src/frontend/SvelteViewEngine.ts
@@ -104,42 +104,20 @@ export default class SvelteViewEngine extends ViewEngine {
         const props = JSON.stringify(localMap);
 
         // Replaces
-        const replaces: { [key: string]: string } = {
+        const replaceMap: Record<string, string> = {
             canonicalViewName: canonicalViewName,
             props: props,
             head: head,
             html: html,
             css: css,
         };
-        const replaceOperations: Record<number, {
-            key: string;
-            replaceValue: string;
-        } | undefined> = {};
-        for (const entry of Object.entries(replaces)) {
-            const matches = rawOutput.matchAll(new RegExp(`%${entry[0]}%`, 'g'));
-            for (const match of matches) {
-                if (typeof match.index === 'number') {
-                    replaceOperations[match.index] = {
-                        key: `%${entry[0]}%`,
-                        replaceValue: entry[1],
-                    };
-                }
-            }
-        }
-
-
-        let output = '';
-        for (let i = 0; i < rawOutput.length; i++) {
-            const replaceOperation = replaceOperations[i];
-            if (replaceOperation) {
-                output += replaceOperation.replaceValue;
-                i += replaceOperation.key.length - 1;
-            } else {
-                output += rawOutput[i];
-            }
-        }
-
-        return output;
+        return rawOutput.replace(
+            new RegExp(Object.keys(replaceMap).map(str => `%${str}%`).join('|'), 'g'),
+            (substring) => {
+                console.log(substring);
+                return replaceMap[substring.slice(1, substring.length - 1)];
+            },
+        );
     }
 
     public async stop(): Promise<void> {