fix lint errors

Author: Jayant Krishnamurthy

src/PythConnection.ts

@@ -47,7 +47,7 @@ export class PythConnection {
     }
 
     const priceData = parsePriceData(account.data)
-    for (let callback of this.callbacks) {
+    for (const callback of this.callbacks) {
       callback(product, priceData)
     }
   }
@@ -90,7 +90,7 @@ export class PythConnection {
    */
   public async start() {
     const accounts = await this.connection.getProgramAccounts(this.pythProgramKey, this.commitment)
-    for (let account of accounts) {
+    for (const account of accounts) {
       this.handleAccount(account.pubkey, account.account, true)
     }
 

src/example_usage.ts

@@ -10,8 +10,10 @@ const pythConnection = new PythConnection(connection, pythPublicKey)
 pythConnection.onPriceChange((product, price) => {
   // sample output:
   // SRM/USD: $8.68725 ±$0.0131
+  // tslint:disable-next-line:no-console
   console.log(`${product.symbol}: $${price.price} \xB1$${price.confidence}`)
 })
 
+// tslint:disable-next-line:no-console
 console.log("Reading from Pyth price feed...")
 pythConnection.start()

src/index.ts

@@ -100,7 +100,7 @@ export function parseBaseData(data: Buffer): Base | undefined {
   }
 
   const magic = data.readUInt32LE(0)
-  if (magic == Magic) {
+  if (magic === Magic) {
     // program version
     const version = data.readUInt32LE(4)
     // account type