1 files changed, 46 insertions, 0 deletions
diff --git a/packages/pipeline/src/parsers/token_metadata/index.ts b/packages/pipeline/src/parsers/token_metadata/index.ts
new file mode 100644
index 000000000..65e0aaa6e
--- /dev/null
+++ b/packages/pipeline/src/parsers/token_metadata/index.ts
@@ -0,0 +1,46 @@
+import * as R from 'ramda';
+
+import { MetamaskTrustedTokenMeta, ZeroExTrustedTokenMeta } from '../../data_sources/trusted_tokens';
+import { TokenMetadata } from '../../entities';
+import { toBigNumberOrNull } from '../../utils';
+
+/**
+ * Parses Metamask's trusted tokens list.
+ * @param rawResp raw response from the metamask json file.
+ */
+export function parseMetamaskTrustedTokens(rawResp: Map<string, MetamaskTrustedTokenMeta>): TokenMetadata[] {
+    const parsedAsObject = R.mapObjIndexed(parseMetamaskTrustedToken, rawResp);
+    return R.values(parsedAsObject);
+}
+
+/**
+ * Parses 0x's trusted tokens list.
+ * @param rawResp raw response from the 0x trusted tokens file.
+ */
+export function parseZeroExTrustedTokens(rawResp: ZeroExTrustedTokenMeta[]): TokenMetadata[] {
+    return R.map(parseZeroExTrustedToken, rawResp);
+}
+
+function parseMetamaskTrustedToken(resp: MetamaskTrustedTokenMeta, address: string): TokenMetadata {
+    const trustedToken = new TokenMetadata();
+
+    trustedToken.address = address;
+    trustedToken.decimals = toBigNumberOrNull(resp.decimals);
+    trustedToken.symbol = resp.symbol;
+    trustedToken.name = resp.name;
+    trustedToken.authority = 'metamask';
+
+    return trustedToken;
+}
+
+function parseZeroExTrustedToken(resp: ZeroExTrustedTokenMeta): TokenMetadata {
+    const trustedToken = new TokenMetadata();
+
+    trustedToken.address = resp.address;
+    trustedToken.decimals = toBigNumberOrNull(resp.decimals);
+    trustedToken.symbol = resp.symbol;
+    trustedToken.name = resp.name;
+    trustedToken.authority = '0x';
+
+    return trustedToken;
+}