Add outdated.js

Opting to not use later version as it has
too many changes focused on ranges/matrices.

Author: bouwkast

scripts/outdated.js

@@ -0,0 +1,51 @@
+const {
+  getInternals,
+  npmView
+} = require('./helpers/versioning')
+const path = require('path')
+const fs = require('fs')
+
+const latestsPath = path.join(
+  __dirname,
+  '..',
+  'packages',
+  'datadog-instrumentations',
+  'src',
+  'helpers',
+  'latests.json'
+)
+const latestsJson = require(latestsPath)
+const internalsNames = Array.from(new Set(getInternals().map(n => n.name)))
+  .filter(x => typeof x === 'string' && x !== 'child_process' && !x.startsWith('node:'))
+
+// TODO A lot of this can be optimized by using `npm outdated`.
+
+async function fix () {
+  const latests = {}
+  for (const name of internalsNames) {
+    const distTags = await npmView(name + ' dist-tags')
+    const latest = distTags.latest
+    latests[name] = latest
+  }
+  latestsJson.latests = latests
+  fs.writeFileSync(latestsPath, JSON.stringify(latestsJson, null, 2))
+}
+
+async function check () {
+  for (const name of internalsNames) {
+    const latest = latestsJson.latests[name]
+    if (!latest) {
+      console.log(`No latest version found for "${name}"`)
+      process.exitCode = 1
+    }
+    const distTags = await npmView(name + ' dist-tags')
+    const npmLatest = distTags.latest
+    if (npmLatest !== latest) {
+      console.log(`"latests.json: is not up to date for "${name}": expected "${npmLatest}", got "${latest}"`)
+      process.exitCode = 1
+    }
+  }
+}
+
+if (process.argv.includes('fix')) fix()
+else check()