@serverless-stack/nextjs-lambda/dist/headers/removeBlacklistedHeaders.js

Provides handlers that can be used in CloudFront Lambda@Edge to deploy next.js applications to the edge

"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
exports.removeBlacklistedHeaders = exports.isBlacklistedHeader = void 0;
const blacklistedHeaders = [
    "connection",
    "expect",
    "keep-alive",
    "proxy-authenticate",
    "proxy-authorization",
    "proxy-connection",
    "trailer",
    "upgrade",
    "x-accel-buffering",
    "x-accel-charset",
    "x-accel-limit-rate",
    "x-accel-redirect",
    "x-cache",
    "x-forwarded-proto",
    "x-real-ip"
];
const blacklistedHeaderPrefixes = ["x-amz-cf-", "x-amzn-", "x-edge-"];
function isBlacklistedHeader(name) {
    const lowerCaseName = name.toLowerCase();
    for (const prefix of blacklistedHeaderPrefixes) {
        if (lowerCaseName.startsWith(prefix)) {
            return true;
        }
    }
    return blacklistedHeaders.includes(lowerCaseName);
}
exports.isBlacklistedHeader = isBlacklistedHeader;
function removeBlacklistedHeaders(headers) {
    for (const header in headers) {
        if (isBlacklistedHeader(header)) {
            delete headers[header];
        }
    }
}
exports.removeBlacklistedHeaders = removeBlacklistedHeaders;