refactor(channels): share prefixed target parsing

src/channels/targets.ts

@@ -67,6 +67,23 @@ export function parseTargetPrefix(params: {
   return id ? buildMessagingTarget(params.kind, id, params.raw) : undefined;
 }
 
+export function parseTargetPrefixes(params: {
+  raw: string;
+  prefixes: Array<{ prefix: string; kind: MessagingTargetKind }>;
+}): MessagingTarget | undefined {
+  for (const entry of params.prefixes) {
+    const parsed = parseTargetPrefix({
+      raw: params.raw,
+      prefix: entry.prefix,
+      kind: entry.kind,
+    });
+    if (parsed) {
+      return parsed;
+    }
+  }
+  return undefined;
+}
+
 export function requireTargetKind(params: {
   platform: string;
   target: MessagingTarget | undefined;

src/discord/targets.ts

@@ -3,7 +3,7 @@ import {
   buildMessagingTarget,
   ensureTargetId,
   parseTargetMention,
-  parseTargetPrefix,
+  parseTargetPrefixes,
   requireTargetKind,
   type MessagingTarget,
   type MessagingTargetKind,
@@ -33,22 +33,14 @@ export function parseDiscordTarget(
   if (mentionTarget) {
     return mentionTarget;
   }
-  const prefixedTarget =
-    parseTargetPrefix({
-      raw: trimmed,
-      prefix: "user:",
-      kind: "user",
-    }) ??
-    parseTargetPrefix({
-      raw: trimmed,
-      prefix: "channel:",
-      kind: "channel",
-    }) ??
-    parseTargetPrefix({
-      raw: trimmed,
-      prefix: "discord:",
-      kind: "user",
-    });
+  const prefixedTarget = parseTargetPrefixes({
+    raw: trimmed,
+    prefixes: [
+      { prefix: "user:", kind: "user" },
+      { prefix: "channel:", kind: "channel" },
+      { prefix: "discord:", kind: "user" },
+    ],
+  });
   if (prefixedTarget) {
     return prefixedTarget;
   }

src/slack/targets.ts

@@ -2,7 +2,7 @@ import {
   buildMessagingTarget,
   ensureTargetId,
   parseTargetMention,
-  parseTargetPrefix,
+  parseTargetPrefixes,
   requireTargetKind,
   type MessagingTarget,
   type MessagingTargetKind,
@@ -31,22 +31,14 @@ export function parseSlackTarget(
   if (mentionTarget) {
     return mentionTarget;
   }
-  const prefixedTarget =
-    parseTargetPrefix({
-      raw: trimmed,
-      prefix: "user:",
-      kind: "user",
-    }) ??
-    parseTargetPrefix({
-      raw: trimmed,
-      prefix: "channel:",
-      kind: "channel",
-    }) ??
-    parseTargetPrefix({
-      raw: trimmed,
-      prefix: "slack:",
-      kind: "user",
-    });
+  const prefixedTarget = parseTargetPrefixes({
+    raw: trimmed,
+    prefixes: [
+      { prefix: "user:", kind: "user" },
+      { prefix: "channel:", kind: "channel" },
+      { prefix: "slack:", kind: "user" },
+    ],
+  });
   if (prefixedTarget) {
     return prefixedTarget;
   }