fix: prefix in .npmrc error log (#6685)

Co-authored-by: AaronHamilton965 <91709196+AaronHamilton965@users.noreply.github.com>

workspaces/config/lib/index.js

@@ -610,7 +610,15 @@ class Config {
  process.emit('time', 'config:load:file:' + file)
  // only catch the error from readFile, not from the loadObject call
  await readFile(file, 'utf8').then(
- data => this.#loadObject(ini.parse(data), type, file),
+ data => {
+ const parsedConfig = ini.parse(data)
+ if (type === 'project' && parsedConfig.prefix) {
+ // Log error if prefix is mentioned in project .npmrc
+ /* eslint-disable-next-line max-len */
+ log.error('config', `prefix cannot be changed from project config: ${file}.`)
+ }
+ return this.#loadObject(parsedConfig, type, file)
+ },
  er => this.#loadObject(null, type, file, er)
  )
  process.emit('timeEnd', 'config:load:file:' + file)

workspaces/config/test/index.js

@@ -1447,3 +1447,34 @@ t.test('umask', async t => {
  t.equal(umask, 0)
  })
 })
+
+t.test('catch project config prefix error', async t => {
+ const path = t.testdir()
+ t.testdir({
+ project: {
+ node_modules: {},
+ '.npmrc': `
+ project-config = true
+ foo = from-project-config
+ prefix=./lib
+ `,
+ },
+ })
+ const config = new Config({
+ npmPath: `${path}/npm`,
+ argv: [process.execPath, __filename, '--projectconfig', `${path}/project/.npmrc`],
+ cwd: join(`${path}/project`),
+ shorthands,
+ definitions,
+ })
+ const logs = []
+ const logHandler = (...args) => logs.push(args)
+ process.on('log', logHandler)
+ t.teardown(() => process.off('log', logHandler))
+ logs.length = 0
+ // config.load() triggers the error to be logged
+ await config.load()
+ t.match(logs, [[
+ 'error', 'config', `prefix cannot be changed from project config: ${path}`,
+ ]], 'Expected error logged')
+})