diff --git a/app/soapbox/features/crypto_donate/utils/block_explorer.js b/app/soapbox/features/crypto_donate/utils/block_explorer.js
deleted file mode 100644
index 0929250bf..000000000
--- a/app/soapbox/features/crypto_donate/utils/block_explorer.js
+++ /dev/null
@@ -1,7 +0,0 @@
-import blockExplorers from './block_explorers.json';
-
-export const getExplorerUrl = (ticker, address) => {
-  const template = blockExplorers[ticker];
-  if (!template) return false;
-  return template.replace('{address}', address);
-};
diff --git a/app/soapbox/features/crypto_donate/utils/block_explorer.ts b/app/soapbox/features/crypto_donate/utils/block_explorer.ts
new file mode 100644
index 000000000..c02ea4abc
--- /dev/null
+++ b/app/soapbox/features/crypto_donate/utils/block_explorer.ts
@@ -0,0 +1,9 @@
+import blockExplorers from './block_explorers.json';
+
+type BlockExplorers = Record<string, string | null>;
+
+export const getExplorerUrl = (ticker: string, address: string): string | null => {
+  const template = (blockExplorers as BlockExplorers)[ticker];
+  if (!template) return null;
+  return template.replace('{address}', address);
+};
diff --git a/app/soapbox/features/crypto_donate/utils/coin_db.js b/app/soapbox/features/crypto_donate/utils/coin_db.ts
similarity index 100%
rename from app/soapbox/features/crypto_donate/utils/coin_db.js
rename to app/soapbox/features/crypto_donate/utils/coin_db.ts
diff --git a/tsconfig.json b/tsconfig.json
index 6af5fd813..beff5f647 100644
--- a/tsconfig.json
+++ b/tsconfig.json
@@ -8,6 +8,7 @@
     "jsx": "react",
     "allowJs": true,
     "moduleResolution": "node",
+    "resolveJsonModule": true,
     "experimentalDecorators": true,
     "allowSyntheticDefaultImports": true,
     "typeRoots": [ "./types", "./node_modules/@types"]