/
gatsby-node.js
35 lines (31 loc) · 1.01 KB
/
gatsby-node.js
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/**
* Copyright (c) Facebook, Inc. and its affiliates.
*/
const readFileSync = require('fs').readFileSync;
const resolve = require('path').resolve;
const safeLoad = require('js-yaml').safeLoad;
const createRedirects = require('./create-redirects');
const path = require('path');
// Reads versions.yml data into GraphQL.
// This is used to generate redirect rules for older documentation versions.
exports.onPostBuild = async ({store}) => {
const versionsFile = resolve(__dirname, '../../content/versions.yml');
const file = readFileSync(versionsFile, 'utf8');
const versions = safeLoad(file);
const {program} = store.getState();
const redirectsFilePath = path.join(
program.directory,
'public',
'_redirects',
);
// versions.yml structure is [{path: string, url: string, ...}, ...]
await createRedirects(
versions
.filter(version => version.path && version.url)
.map(version => ({
fromPath: version.path,
toPath: version.url,
})),
redirectsFilePath,
);
};