59 lines
1.5 KiB
JavaScript
59 lines
1.5 KiB
JavaScript
const url = require("url");
|
|
const https = require("https");
|
|
|
|
const config = require("../config");
|
|
const bufferStream = require("./bufferStream");
|
|
const agent = require("./registryAgent");
|
|
|
|
function parseJSON(res) {
|
|
return bufferStream(res).then(JSON.parse);
|
|
}
|
|
|
|
function fetchNpmPackageInfo(packageName) {
|
|
return new Promise((resolve, reject) => {
|
|
const encodedPackageName =
|
|
packageName.charAt(0) === "@"
|
|
? `@${encodeURIComponent(packageName.substring(1))}`
|
|
: encodeURIComponent(packageName);
|
|
|
|
const infoURL = `${config.registryURL}/${encodedPackageName}`;
|
|
|
|
console.log(
|
|
`info: Fetching package info for ${packageName} from ${infoURL}`
|
|
);
|
|
|
|
const { hostname, pathname } = url.parse(infoURL);
|
|
const options = {
|
|
agent: agent,
|
|
hostname: hostname,
|
|
path: pathname,
|
|
headers: {
|
|
Accept: "application/json"
|
|
}
|
|
};
|
|
|
|
https
|
|
.get(options, res => {
|
|
if (res.statusCode === 200) {
|
|
resolve(parseJSON(res));
|
|
} else if (res.statusCode === 404) {
|
|
resolve(null);
|
|
} else {
|
|
bufferStream(res).then(data => {
|
|
const content = data.toString("utf-8");
|
|
const error = new Error(
|
|
`Failed to fetch info for ${packageName}\nstatus: ${
|
|
res.statusCode
|
|
}\ndata: ${content}`
|
|
);
|
|
|
|
reject(error);
|
|
});
|
|
}
|
|
})
|
|
.on("error", reject);
|
|
});
|
|
}
|
|
|
|
module.exports = fetchNpmPackageInfo;
|