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perf(v2): smaller bundlesize by embedding metadata to content (#2088)

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* wip embed metadata to content

* embed metadata in blog as well

* refactor

* update test

* yarn lock

* avoid overwriting file everytime we run new nodejs process

* nits
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Endi 2019-12-06 12:34:21 +07:00 • committed by GitHub
parent 32c9d07b90
commit 7f8aca2ddc
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16 changed files with 236 additions and 200 deletions
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21
packages/docusaurus-plugin-content-blog/src/markdownLoader.ts
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@ -8,11 +8,14 @@
const {parseQuery, getOptions} = require('loader-utils');
import {loader} from 'webpack';
import {truncate} from './blogUtils';
import path from 'path';
import {readFile} from 'fs-extra';
import {aliasedSitePath, docuHash} from '@docusaurus/utils';
export = function(fileString: string) {
const callback = this.async();
const {truncateMarker}: {truncateMarker: RegExp | string} = getOptions(this);
const {truncateMarker, siteDir, dataDir} = getOptions(this);
let finalContent = fileString;
@ -21,5 +24,19 @@ export = function(fileString: string) {
if (truncated) {
finalContent = truncate(fileString, truncateMarker);
}
return callback && callback(null, finalContent);
// Read metadata & then embed it to this markdown content
// Note that metadataPath must be the same/ in-sync as the path from createData
const aliasedSource = aliasedSitePath(this.resourcePath, siteDir);
const metadataPath = path.join(dataDir, `${docuHash(aliasedSource)}.json`);
// Add metadataPath as dependency of this loader result so that we can recompile if metadata is changed
this.addDependency(metadataPath);
readFile(metadataPath, 'utf8', function(err, metadata) {
if (err) return callback && callback(err);
const metadataStr = `export const metadata = ${metadata};`;
callback && callback(null, finalContent + '\n' + metadataStr);
});
} as loader.Loader;