feat(init): reify on init new workspace (#4892)

Adds a minimalistic reify step that updates the installed tree after
initializing a new workspace.

Moved the shared update logic from `lib/commands/version.js` to a
`lib/workspaces/update-workspaces.js` module that is reused between
both `npm version` and `npm init`.

Relates to: https://github.com/npm/rfcs/issues/556
Relates to: https://github.com/npm/cli/pull/4588

1 files changed, 40 insertions, 0 deletions

diff --git a/lib/workspaces/update-workspaces.js b/lib/workspaces/update-workspaces.js
new file mode 100644
index 000000000..4cba1245a
--- /dev/null
+++ b/lib/workspaces/update-workspaces.js
@@ -0,0 +1,40 @@
+'use strict'
+
+const Arborist = require('@npmcli/arborist')
+const reifyFinish = require('../utils/reify-finish.js')
+
+async function updateWorkspaces ({
+  config,
+  flatOptions,
+  localPrefix,
+  npm,
+  workspaces,
+}) {
+  if (!flatOptions.workspacesUpdate || !workspaces.length) {
+    return
+  }
+
+  // default behavior is to not save by default in order to avoid
+  // race condition problems when publishing multiple workspaces
+  // that have dependencies on one another, it might still be useful
+  // in some cases, which then need to set --save
+  const save = config.isDefault('save')
+    ? false
+    : config.get('save')
+
+  // runs a minimalistic reify update, targetting only the workspaces
+  // that had version updates and skipping fund/audit/save
+  const opts = {
+    ...flatOptions,
+    audit: false,
+    fund: false,
+    path: localPrefix,
+    save,
+  }
+  const arb = new Arborist(opts)
+
+  await arb.reify({ ...opts, update: workspaces })
+  await reifyFinish(npm, arb)
+}
+
+module.exports = updateWorkspaces