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const { resolve, relative } = require('path')
const mapWorkspaces = require('@npmcli/map-workspaces')
const { minimatch } = require('minimatch')
const rpj = require('read-package-json-fast')
// minimatch wants forward slashes only for glob patterns
const globify = pattern => pattern.split('\\').join('/')
// Returns an Map of paths to workspaces indexed by workspace name
// { foo => '/path/to/foo' }
const getWorkspaces = async (filters, { path, includeWorkspaceRoot, relativeFrom }) => {
// TODO we need a better error to be bubbled up here if this rpj call fails
const pkg = await rpj(resolve(path, 'package.json'))
const workspaces = await mapWorkspaces({ cwd: path, pkg })
let res = new Map()
if (includeWorkspaceRoot) {
res.set(pkg.name, path)
}
if (!filters.length) {
res = new Map([...res, ...workspaces])
}
for (const filterArg of filters) {
for (const [workspaceName, workspacePath] of workspaces.entries()) {
let relativePath = relative(relativeFrom, workspacePath)
if (filterArg.startsWith('./')) {
relativePath = `./${relativePath}`
}
const relativeFilter = relative(path, filterArg)
if (filterArg === workspaceName
|| resolve(relativeFrom, filterArg) === workspacePath
|| minimatch(relativePath, `${globify(relativeFilter)}/*`)
|| minimatch(relativePath, `${globify(filterArg)}/*`)
) {
res.set(workspaceName, workspacePath)
}
}
}
if (!res.size) {
let msg = '!'
if (filters.length) {
msg = `:\n ${filters.reduce(
(acc, filterArg) => `${acc} --workspace=${filterArg}`, '')}`
}
throw new Error(`No workspaces found${msg}`)
}
return res
}
module.exports = getWorkspaces
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