hono
Version:
Web framework built on Web Standards
73 lines (72 loc) • 2.31 kB
JavaScript
;
var __defProp = Object.defineProperty;
var __getOwnPropDesc = Object.getOwnPropertyDescriptor;
var __getOwnPropNames = Object.getOwnPropertyNames;
var __hasOwnProp = Object.prototype.hasOwnProperty;
var __export = (target, all) => {
for (var name in all)
__defProp(target, name, { get: all[name], enumerable: true });
};
var __copyProps = (to, from, except, desc) => {
if (from && typeof from === "object" || typeof from === "function") {
for (let key of __getOwnPropNames(from))
if (!__hasOwnProp.call(to, key) && key !== except)
__defProp(to, key, { get: () => from[key], enumerable: !(desc = __getOwnPropDesc(from, key)) || desc.enumerable });
}
return to;
};
var __toCommonJS = (mod) => __copyProps(__defProp({}, "__esModule", { value: true }), mod);
var etag_exports = {};
__export(etag_exports, {
RETAINED_304_HEADERS: () => RETAINED_304_HEADERS,
etag: () => etag
});
module.exports = __toCommonJS(etag_exports);
var import_crypto = require("../../utils/crypto");
const RETAINED_304_HEADERS = [
"cache-control",
"content-location",
"date",
"etag",
"expires",
"vary"
];
function etagMatches(etag2, ifNoneMatch) {
return ifNoneMatch != null && ifNoneMatch.split(/,\s*/).indexOf(etag2) > -1;
}
const etag = (options) => {
const retainedHeaders = options?.retainedHeaders ?? RETAINED_304_HEADERS;
const weak = options?.weak ?? false;
return async function etag2(c, next) {
const ifNoneMatch = c.req.header("If-None-Match") ?? null;
await next();
const res = c.res;
let etag3 = res.headers.get("ETag");
if (!etag3) {
const hash = await (0, import_crypto.sha1)(res.clone().body || "");
etag3 = weak ? `W/"${hash}"` : `"${hash}"`;
}
if (etagMatches(etag3, ifNoneMatch)) {
await c.res.blob();
c.res = new Response(null, {
status: 304,
statusText: "Not Modified",
headers: {
ETag: etag3
}
});
c.res.headers.forEach((_, key) => {
if (retainedHeaders.indexOf(key.toLowerCase()) === -1) {
c.res.headers.delete(key);
}
});
} else {
c.res.headers.set("ETag", etag3);
}
};
};
// Annotate the CommonJS export names for ESM import in node:
0 && (module.exports = {
RETAINED_304_HEADERS,
etag
});