feat: Add prefetch script to install and ci commands

lib/commands/ci.js

@@ -73,9 +73,28 @@ class CI extends ArboristWorkspaceCmd {
       return Promise.all(entries.map(f => rimraf(`${path}/${f}`, { glob: false })))
     })
 
+    const ignoreScripts = this.npm.config.get('ignore-scripts')
+    // run the same set of scripts that `npm install` runs.
+    if (!ignoreScripts) {
+      const scripts = [
+        'prefetch',
+      ]
+      const scriptShell = this.npm.config.get('script-shell') || undefined
+      for (const event of scripts) {
+        await runScript({
+          path: where,
+          args: [],
+          scriptShell,
+          stdio: 'inherit',
+          stdioString: true,
+          banner: !this.npm.silent,
+          event,
+        })
+      }
+    }
+
     await arb.reify(opts)
 
-    const ignoreScripts = this.npm.config.get('ignore-scripts')
     // run the same set of scripts that `npm install` runs.
     if (!ignoreScripts) {
       const scripts = [

lib/commands/install.js

@@ -134,6 +134,23 @@ class Install extends ArboristWorkspaceCmd {
       throw this.usageError()
     }
 
+    if (!args.length && !isGlobalInstall && !ignoreScripts) {
+      const scripts = [
+        'prefetch',
+      ]
+      for (const event of scripts) {
+        await runScript({
+          path: where,
+          args: [],
+          scriptShell,
+          stdio: 'inherit',
+          stdioString: true,
+          banner: !this.npm.silent,
+          event,
+        })
+      }
+    }
+
     const opts = {
       ...this.npm.flatOptions,
       auditLevel: null,

test/lib/commands/ci.js

@@ -139,6 +139,7 @@ t.test('lifecycle scripts', async t => {
   registry.nock.post('/-/npm/v1/security/advisories/bulk').reply(200, {})
   await npm.exec('ci', [])
   t.same(scripts, [
+    'prefetch',
     'preinstall',
     'install',
     'postinstall',

test/lib/commands/install.js

@@ -81,6 +81,7 @@ t.test('without args', async t => {
   t.match(ARB_ARGS, { global: false, path: npm.prefix })
   t.equal(REIFY_CALLED, true, 'called reify')
   t.strictSame(SCRIPTS, [
+    'prefetch',
     'preinstall',
     'install',
     'postinstall',