61 lines
1.7 KiB
JavaScript
61 lines
1.7 KiB
JavaScript
const cache = require('./cache');
|
|
const fetchNpmPackageInfo = require('./fetchNpmPackageInfo');
|
|
|
|
const notFound = '';
|
|
|
|
function cleanPackageConfig(packageConfig) {
|
|
return {
|
|
name: packageConfig.name,
|
|
version: packageConfig.version,
|
|
dependencies: Object.assign(
|
|
{},
|
|
packageConfig.dependencies,
|
|
packageConfig.peerDependencies
|
|
),
|
|
tarballURL: packageConfig.dist.tarball
|
|
};
|
|
}
|
|
|
|
function cleanPackageInfo(packageInfo) {
|
|
return {
|
|
versions: Object.keys(packageInfo.versions).reduce((memo, key) => {
|
|
memo[key] = cleanPackageConfig(packageInfo.versions[key]);
|
|
return memo;
|
|
}, {}),
|
|
'dist-tags': packageInfo['dist-tags']
|
|
};
|
|
}
|
|
|
|
function getNpmPackageInfo(packageName) {
|
|
return new Promise((resolve, reject) => {
|
|
const key = `npmPackageInfo-${packageName}`;
|
|
const value = cache.get(key);
|
|
|
|
if (value != null) {
|
|
console.log('GOT VALUE');
|
|
resolve(value === notFound ? null : JSON.parse(value));
|
|
} else {
|
|
console.log('NO VALUE');
|
|
fetchNpmPackageInfo(packageName).then(value => {
|
|
if (value == null) {
|
|
// Cache 404s for 5 minutes. This prevents us from making
|
|
// unnecessary requests to the registry for bad package names.
|
|
// In the worst case, a brand new package's info will be
|
|
// available within 5 minutes.
|
|
cache.setex(key, 300, notFound);
|
|
resolve(null);
|
|
} else {
|
|
value = cleanPackageInfo(value);
|
|
|
|
// Cache valid package info for 1 minute. In the worst case,
|
|
// new versions won't be available for 1 minute.
|
|
cache.setex(key, 60, JSON.stringify(value));
|
|
resolve(value);
|
|
}
|
|
}, reject);
|
|
}
|
|
});
|
|
}
|
|
|
|
module.exports = getNpmPackageInfo;
|