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// take a path and a resolved value, and turn it into a resolution from
// the given new path. This is used with converting a package.json's
// relative file: path into one suitable for a lockfile, or between
// lockfiles, and for converting hosted git repos to a consistent url type.
const npa = require('npm-package-arg')
const relpath = require('./relpath.js')
const consistentResolve = (resolved, fromPath, toPath, relPaths = false) => {
if (!resolved)
return null
try {
const {
fetchSpec,
saveSpec,
type,
hosted,
rawSpec,
raw,
} = npa(resolved, fromPath)
const isPath = type === 'file' || type === 'directory'
return isPath && !relPaths ? `file:${fetchSpec}`
: isPath ? 'file:' + (toPath ? relpath(toPath, fetchSpec) : fetchSpec)
: hosted ? 'git+' + hosted.sshurl({ noCommittish: false })
: type === 'git' ? saveSpec
// always return something. 'foo' is interpreted as 'foo@' otherwise.
: rawSpec === '' && raw.slice(-1) !== '@' ? raw
// just strip off the name, but otherwise return as-is
: rawSpec
} catch (_) {
// whatever we passed in was not acceptable to npa.
// leave it 100% untouched.
return resolved
}
}
module.exports = consistentResolve
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