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perf(aws-lambda): optimize header parsing to reduce micro-allocations #4762

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perf(aws-lambda): optimize header parsing to reduce micro-allocations #4762

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13 changes: 8 additions & 5 deletions src/adapter/aws-lambda/handler.ts
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Original file line number Diff line number Diff line change
Expand Up @@ -413,17 +413,20 @@ export class EventV2Processor extends EventProcessor<APIGatewayProxyEventV2> {
protected getHeaders(event: APIGatewayProxyEventV2): Headers {
const headers = new Headers()
this.getCookies(event, headers)
if (event.headers) {
for (const [k, v] of Object.entries(event.headers)) {
if (v) {
headers.set(k, v)
const eventHeaders = event.headers
if (eventHeaders) {
for (const k in eventHeaders) {
if (Object.prototype.hasOwnProperty.call(eventHeaders, k)) {
const v = eventHeaders[k]
if (v) {
headers.set(k, v)
}
}
}
}
return headers
}
}

const v2Processor: EventV2Processor = new EventV2Processor()

export class EventV1Processor extends EventProcessor<APIGatewayProxyEvent> {
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