46 lines
1.1 KiB
JavaScript
46 lines
1.1 KiB
JavaScript
const url = require("url")
|
|
const validatePackageName = require("./validatePackageName")
|
|
|
|
const URLFormat = /^\/((?:@[^/@]+\/)?[^/@]+)(?:@([^/]+))?(\/.*)?$/
|
|
|
|
function decodeParam(param) {
|
|
if (param) {
|
|
try {
|
|
return decodeURIComponent(param)
|
|
} catch (error) {
|
|
// Ignore invalid params.
|
|
}
|
|
}
|
|
|
|
return ""
|
|
}
|
|
|
|
function parsePackageURL(packageURL) {
|
|
const { pathname, search, query } = url.parse(packageURL, true)
|
|
|
|
const match = URLFormat.exec(pathname)
|
|
|
|
// Disallow invalid URL formats.
|
|
if (match == null) return null
|
|
|
|
const packageName = match[1]
|
|
|
|
// Disallow invalid npm package names.
|
|
if (!validatePackageName(packageName)) return null
|
|
|
|
const packageVersion = decodeParam(match[2]) || "latest"
|
|
const filename = decodeParam(match[3])
|
|
|
|
return {
|
|
// If the URL is /@scope/name@version/file.js?main=browser:
|
|
pathname, // /@scope/name@version/path.js
|
|
search, // ?main=browser
|
|
query, // { main: 'browser' }
|
|
packageName, // @scope/name
|
|
packageVersion, // version
|
|
filename // /file.js
|
|
}
|
|
}
|
|
|
|
module.exports = parsePackageURL
|