/opt/canhelp/node_modules/next/dist/esm/build/webpack/plugins
Edit: /opt/canhelp/node_modules/next/dist/esm/build/webpack/plugins/subresource-integrity-plugin.js (2238B)
import { webpack, sources } from 'next/dist/compiled/webpack/webpack';
import crypto from 'crypto';
import { SUBRESOURCE_INTEGRITY_MANIFEST } from '../../../shared/lib/constants';
const PLUGIN_NAME = 'SubresourceIntegrityPlugin';
export class SubresourceIntegrityPlugin {
constructor(algorithm){
this.algorithm = algorithm;
}
apply(compiler) {
compiler.hooks.make.tap(PLUGIN_NAME, (compilation)=>{
compilation.hooks.afterProcessAssets.tap({
name: PLUGIN_NAME,
stage: webpack.Compilation.PROCESS_ASSETS_STAGE_ADDITIONS
}, ()=>{
// Collect all the assets.
let files = new Set();
for (const asset of compilation.getAssets()){
files.add(asset.name);
}
// For each file, deduped, calculate the file hash.
const hashes = {};
for (const file of files.values()){
// Get the buffer for the asset.
const asset = compilation.getAsset(file);
if (!asset) {
throw Object.defineProperty(new Error(`could not get asset: ${file}`), "__NEXT_ERROR_CODE", {
value: "E349",
enumerable: false,
configurable: true
});
}
// Get the buffer for the asset.
const buffer = asset.source.buffer();
// Create the hash for the content.
const hash = crypto.createHash(this.algorithm).update(buffer).digest().toString('base64');
hashes[file] = `${this.algorithm}-${hash}`;
}
const json = JSON.stringify(hashes, null, 2);
const file = 'server/' + SUBRESOURCE_INTEGRITY_MANIFEST;
compilation.emitAsset(file + '.js', new sources.RawSource(`self.__SUBRESOURCE_INTEGRITY_MANIFEST=${JSON.stringify(json)}`));
compilation.emitAsset(file + '.json', new sources.RawSource(json));
});
});
}
}
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