feat: Use nullish coalesence, even for array indexing

Author: astuyve

src/trace/context.ts

@@ -203,7 +203,7 @@ export function readTraceFromAppSyncEvent(event: any): TraceContext | undefined
 }
 
 export function readTraceFromSQSEvent(event: SQSEvent): TraceContext | undefined {
-  if (event.Records && event.Records[0]?.messageAttributes?._datadog?.stringValue) {
+  if (event.Records?.[0]?.messageAttributes?._datadog?.stringValue) {
     const traceHeaders = event.Records[0].messageAttributes._datadog.stringValue;
 
     try {
@@ -238,7 +238,7 @@ export function readTraceFromSQSEvent(event: SQSEvent): TraceContext | undefined
 }
 
 export function readTraceFromSNSSQSEvent(event: SQSEvent): TraceContext | undefined {
-  if (event?.Records[0]?.body) {
+  if (event?.Records?.[0]?.body) {
     try {
       const parsedBody = JSON.parse(event.Records[0].body) as SNSMessage;
       if (
@@ -275,7 +275,7 @@ export function readTraceFromSNSSQSEvent(event: SQSEvent): TraceContext | undefi
 }
 
 export function readTraceFromKinesisEvent(event: KinesisStreamEvent): TraceContext | undefined {
-  if (event?.Records[0]?.kinesis?.data) {
+  if (event?.Records?.[0]?.kinesis?.data) {
     try {
       const parsedBody = JSON.parse(Buffer.from(event.Records[0].kinesis.data, "base64").toString("ascii")) as any;
       if (parsedBody && parsedBody._datadog) {
@@ -338,7 +338,7 @@ export function readTraceFromEventbridgeEvent(event: EventBridgeEvent<any, any>)
 }
 
 export function readTraceFromSNSEvent(event: SNSEvent): TraceContext | undefined {
-  if (event?.Records && event?.Records[0]?.Sns?.MessageAttributes?._datadog.Value) {
+  if (event?.Records?.[0]?.Sns?.MessageAttributes?._datadog.Value) {
     try {
       const traceData = JSON.parse(event.Records[0].Sns.MessageAttributes._datadog.Value);
       const traceID = traceData[traceIDHeader];