webpack-subresource-integrity
Version:
Webpack plugin for enabling Subresource Integrity
49 lines • 1.51 kB
JavaScript
/**
* Copyright (c) 2015-present, Waysact Pty Ltd
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/
import { computeIntegrity } from "./util";
export class AssetIntegrity {
hashFuncNames;
constructor(hashFuncNames) {
this.hashFuncNames = hashFuncNames;
}
/**
* @internal
*/
assetIntegrity = new Map();
/**
* @internal
*/
inverseAssetIntegrity = new Map();
update(assetKey, integrity) {
if (!this.assetIntegrity.has(assetKey)) {
this.assetIntegrity.set(assetKey, integrity);
this.inverseAssetIntegrity.set(integrity, assetKey);
}
return integrity;
}
updateHash(input, oldHash) {
const assetKey = this.inverseAssetIntegrity.get(oldHash);
if (assetKey && input[0]) {
const newIntegrity = computeIntegrity(this.hashFuncNames, input[0]);
this.inverseAssetIntegrity.delete(oldHash);
this.assetIntegrity.delete(assetKey);
this.update(assetKey, newIntegrity);
return newIntegrity;
}
return undefined;
}
updateFromSource(assetKey, source) {
return this.update(assetKey, computeIntegrity(this.hashFuncNames, source));
}
has(assetKey) {
return this.assetIntegrity.has(assetKey);
}
get(assetKey) {
return this.assetIntegrity.get(assetKey);
}
}
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