From cb78d0fcaee4f6f745ab88f388de264f6ae935c4 Mon Sep 17 00:00:00 2001
From: Manas Ladha <manasladha035@bitgo.com>
Date: Fri, 29 May 2026 17:17:36 +0530
Subject: [PATCH] feat(statics): add getTokenFeatures helper for AMS token
 feature diffs

`getTokenFeatures(family, additionalFeatures?, excludedFeatures?)` resolves
the final feature list for a token: the family's default token features
(via the existing `getNetworkFeatures` lookup) plus `additionalFeatures`,
minus `excludedFeatures`. Both diff params default to `[]`.

Consumed by the generated `build/botTokens.ts` in BitGoJS once the AMS bot
token generator is switched to call AMS with `features=false` (AMS already
returns the add/excl diff in that mode). Keeps the generated file a single
`getTokenFeatures(...)` call per token instead of inline `new Set` /
`.filter` expressions.

TICKET: CSHLD-935

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
---
 modules/statics/src/index.ts                      |  7 ++++++-
 modules/statics/src/networkFeatureMapForTokens.ts | 15 +++++++++++++++
 2 files changed, 21 insertions(+), 1 deletion(-)

diff --git a/modules/statics/src/index.ts b/modules/statics/src/index.ts
index 55be769460..c2beb7d678 100644
--- a/modules/statics/src/index.ts
+++ b/modules/statics/src/index.ts
@@ -41,7 +41,12 @@ export {
   Erc7984Coin,
 } from './account';
 export { CoinMap } from './map';
-export { networkFeatureMapForTokens, registerNetworkFeatures, getNetworkFeatures } from './networkFeatureMapForTokens';
+export {
+  networkFeatureMapForTokens,
+  registerNetworkFeatures,
+  getNetworkFeatures,
+  getTokenFeatures,
+} from './networkFeatureMapForTokens';
 export {
   generateErc20Coin,
   generateTestErc20Coin,
diff --git a/modules/statics/src/networkFeatureMapForTokens.ts b/modules/statics/src/networkFeatureMapForTokens.ts
index 38ad9d4b67..a2ac1d502d 100644
--- a/modules/statics/src/networkFeatureMapForTokens.ts
+++ b/modules/statics/src/networkFeatureMapForTokens.ts
@@ -29,6 +29,21 @@ export function getNetworkFeatures(family: string): CoinFeature[] | undefined {
   return networkFeatureMapForTokens[family as CoinFamily] ?? dynamicNetworkFeaturesMap.get(family);
 }
 
+/**
+ * Resolve the final feature list for a token: the family's default token features
+ * plus `additionalFeatures`, minus `excludedFeatures`. Used by generated bot-token
+ * lists to apply the per-token diff returned by AMS (`features=false`).
+ */
+export function getTokenFeatures(
+  family: string,
+  additionalFeatures: CoinFeature[] = [],
+  excludedFeatures: CoinFeature[] = []
+): CoinFeature[] {
+  const base = getNetworkFeatures(family) ?? [];
+  const excluded = new Set<CoinFeature>(excludedFeatures);
+  return [...new Set<CoinFeature>([...base, ...additionalFeatures])].filter((f) => !excluded.has(f));
+}
+
 export const networkFeatureMapForTokens: Partial<Record<CoinFamily, CoinFeature[]>> = {
   algo: AccountCoin.DEFAULT_FEATURES,
   apt: APT_FEATURES,