45 lines
1.3 KiB
JavaScript
45 lines
1.3 KiB
JavaScript
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"use strict";
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exports.__esModule = true;
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var cache_control_utils_1 = require("./cache-control-utils");
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function isMatch(requestHeaders, cachedResponse) {
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var vary = cachedResponse.headers['vary'];
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if (vary && cachedResponse.requestHeaders) {
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vary = '' + vary;
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return vary.split(',').map(function (header) { return header.trim().toLowerCase(); }).every(function (header) {
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return requestHeaders[header] === cachedResponse.requestHeaders[header];
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});
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}
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else {
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return true;
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}
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}
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exports.isMatch = isMatch;
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;
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function isExpired(cachedResponse) {
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var policy = cache_control_utils_1.cachePolicy(cachedResponse);
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if (policy) {
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var time = (Date.now() - cachedResponse.requestTimestamp) / 1000;
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if (policy.maxage !== null && policy.maxage > time) {
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return false;
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}
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}
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if (cachedResponse.statusCode === 301 || cachedResponse.statusCode === 308)
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return false;
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return true;
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}
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exports.isExpired = isExpired;
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;
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function canCache(res) {
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if (res.headers['etag'])
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return true;
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if (res.headers['last-modified'])
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return true;
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if (cache_control_utils_1.isCacheable(res))
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return true;
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if (res.statusCode === 301 || res.statusCode === 308)
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return true;
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return false;
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}
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exports.canCache = canCache;
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;
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