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const { promisify } = require('util')
const path = require('path')
const getName = require('@npmcli/name-from-folder')
const minimatch = require('minimatch')
const rpj = require('read-package-json-fast')
const glob = require('glob')
const pGlob = promisify(glob)
function appendNegatedPatterns (patterns) {
const results = []
for (let pattern of patterns) {
const excl = pattern.match(/^!+/)
if (excl) {
pattern = pattern.substr(excl[0].length)
}
// strip off any / from the start of the pattern. /foo => foo
pattern = pattern.replace(/^\/+/, '')
// an odd number of ! means a negated pattern. !!foo ==> foo
const negate = excl && excl[0].length % 2 === 1
results.push({ pattern, negate })
}
return results
}
function getPatterns (workspaces) {
const workspacesDeclaration =
Array.isArray(workspaces.packages)
? workspaces.packages
: workspaces
if (!Array.isArray(workspacesDeclaration)) {
throw getError({
message: 'workspaces config expects an Array',
code: 'EWORKSPACESCONFIG'
})
}
return [
...appendNegatedPatterns(workspacesDeclaration),
{ pattern: '**/node_modules/**', negate: true }
]
}
function isEmpty (patterns) {
return patterns.length < 2
}
function getPackageName (pkg, pathname) {
const { name } = pkg
return name || getName(pathname)
}
function pkgPathmame (opts) {
return (...args) => {
const cwd = opts.cwd ? opts.cwd : process.cwd()
return path.join.apply(null, [cwd, ...args])
}
}
// make sure glob pattern only matches folders
function getGlobPattern (pattern) {
return pattern.endsWith('/')
? pattern
: `${pattern}/`
}
function getError ({ Type = TypeError, message, code }) {
return Object.assign(new Type(message), { code })
}
function reverseResultMap (map) {
return new Map(Array.from(map, item => item.reverse()))
}
async function mapWorkspaces (opts = {}) {
if (!opts || !opts.pkg) {
throw getError({
message: 'mapWorkspaces missing pkg info',
code: 'EMAPWORKSPACESPKG'
})
}
const { workspaces = [] } = opts.pkg
const patterns = getPatterns(workspaces)
const results = new Map()
const seen = new Map()
if (isEmpty(patterns)) {
return results
}
const getGlobOpts = () => ({
...opts,
ignore: [
...opts.ignore || [],
...['**/node_modules/**']
]
})
const getPackagePathname = pkgPathmame(opts)
for (const item of patterns) {
const matches = await pGlob(getGlobPattern(item.pattern), getGlobOpts())
for (const match of matches) {
let pkg
const packageJsonPathname = getPackagePathname(match, 'package.json')
const packagePathname = path.dirname(packageJsonPathname)
try {
pkg = await rpj(packageJsonPathname)
} catch (err) {
if (err.code === 'ENOENT') {
continue
} else {
throw err
}
}
const name = getPackageName(pkg, packagePathname)
if (item.negate) {
results.delete(packagePathname, name)
} else {
if (seen.has(name) && seen.get(name) !== packagePathname) {
throw getError({
Type: Error,
message: 'must not have multiple workspaces with the same name',
code: 'EDUPLICATEWORKSPACE'
})
}
seen.set(name, packagePathname)
results.set(packagePathname, name)
}
}
}
return reverseResultMap(results)
}
mapWorkspaces.virtual = function (opts = {}) {
if (!opts || !opts.lockfile) {
throw getError({
message: 'mapWorkspaces.virtual missing lockfile info',
code: 'EMAPWORKSPACESLOCKFILE'
})
}
const { packages = {} } = opts.lockfile
const { workspaces = [] } = packages[''] || {}
const patterns = getPatterns(workspaces)
// uses a pathname-keyed map in order to negate the exact items
const results = new Map()
if (isEmpty(patterns)) {
return results
}
const getPackagePathname = pkgPathmame(opts)
for (const packageKey of Object.keys(packages)) {
if (packageKey === '') {
continue
}
for (const item of patterns) {
if (minimatch(packageKey, item.pattern)) {
const packagePathname = getPackagePathname(packageKey)
const name = getPackageName(packages[packageKey], packagePathname)
if (item.negate) {
results.delete(packagePathname)
} else {
results.set(packagePathname, name)
}
}
}
}
// Invert pathname-keyed to a proper name-to-pathnames Map
return reverseResultMap(results)
}
module.exports = mapWorkspaces
|
