Fix: esbuild plugin when requiring esm files (#4774)

* fix esbuild issue when requiring esm files

LICENSE-3rdparty.csv

@@ -29,6 +29,7 @@ require,retry,MIT,Copyright 2011 Tim Koschützki Felix Geisendörfer
 require,rfdc,MIT,Copyright 2019 David Mark Clements
 require,semver,ISC,Copyright Isaac Z. Schlueter and Contributors
 require,shell-quote,mit,Copyright (c) 2013 James Halliday
+dev,@apollo/server,MIT,Copyright (c) 2016-2020 Apollo Graph, Inc. (Formerly Meteor Development Group, Inc.)
 dev,@types/node,MIT,Copyright Authors
 dev,autocannon,MIT,Copyright 2016 Matteo Collina
 dev,aws-sdk,Apache 2.0,Copyright 2012-2017 Amazon.com, Inc. or its affiliates. All Rights Reserved.

integration-tests/esbuild/basic-test.js

@@ -6,6 +6,7 @@ const assert = require('assert')
 const express = require('express')
 const http = require('http')
 require('knex') // has dead code paths for multiple instrumented packages
+require('@apollo/server')
 
 const app = express()
 const PORT = 31415

integration-tests/esbuild/package.json

@@ -18,6 +18,7 @@
   "author": "Thomas Hunter II <tlhunter@datadog.com>",
   "license": "ISC",
   "dependencies": {
+    "@apollo/server": "^4.11.0",
     "aws-sdk": "^2.1446.0",
     "axios": "^1.6.7",
     "esbuild": "0.16.12",

package.json

@@ -108,6 +108,7 @@
     "tlhunter-sorted-set": "^0.1.0"
   },
   "devDependencies": {
+    "@apollo/server": "^4.11.0",
     "@types/node": "^16.18.103",
     "autocannon": "^4.5.2",
     "aws-sdk": "^2.1446.0",

packages/datadog-esbuild/index.js

@@ -96,7 +96,9 @@ module.exports.setup = function (build) {
 
       let pathToPackageJson
       try {
-        pathToPackageJson = require.resolve(`${extracted.pkg}/package.json`, { paths: [args.resolveDir] })
+        // we can't use require.resolve('pkg/package.json') as ESM modules don't make the file available
+        pathToPackageJson = require.resolve(`${extracted.pkg}`, { paths: [args.resolveDir] })
+        pathToPackageJson = extractPackageAndModulePath(pathToPackageJson).pkgJson
       } catch (err) {
         if (err.code === 'MODULE_NOT_FOUND') {
           if (!internal) {
@@ -111,7 +113,7 @@ module.exports.setup = function (build) {
         }
       }
 
-      const packageJson = require(pathToPackageJson)
+      const packageJson = JSON.parse(fs.readFileSync(pathToPackageJson).toString())
 
       if (DEBUG) console.log(`RESOLVE: ${args.path}@${packageJson.version}`)
 

packages/datadog-instrumentations/src/utils/src/extract-package-and-module-path.js

@@ -6,7 +6,7 @@ const NM = 'node_modules/'
  * For a given full path to a module,
  *   return the package name it belongs to and the local path to the module
  *   input: '/foo/node_modules/@co/stuff/foo/bar/baz.js'
- *   output: { pkg: '@co/stuff', path: 'foo/bar/baz.js' }
+ *   output: { pkg: '@co/stuff', path: 'foo/bar/baz.js',  pkgJson: '/foo/node_modules/@co/stuff/package.json' }
  */
 module.exports = function extractPackageAndModulePath (fullPath) {
   const nm = fullPath.lastIndexOf(NM)
@@ -17,17 +17,20 @@ module.exports = function extractPackageAndModulePath (fullPath) {
   const subPath = fullPath.substring(nm + NM.length)
   const firstSlash = subPath.indexOf('/')
 
+  const firstPath = fullPath.substring(fullPath[0], nm + NM.length)
+
   if (subPath[0] === '@') {
     const secondSlash = subPath.substring(firstSlash + 1).indexOf('/')
-
     return {
       pkg: subPath.substring(0, firstSlash + 1 + secondSlash),
-      path: subPath.substring(firstSlash + 1 + secondSlash + 1)
+      path: subPath.substring(firstSlash + 1 + secondSlash + 1),
+      pkgJson: firstPath + subPath.substring(0, firstSlash + 1 + secondSlash) + '/package.json'
     }
   }
 
   return {
     pkg: subPath.substring(0, firstSlash),
-    path: subPath.substring(firstSlash + 1)
+    path: subPath.substring(firstSlash + 1),
+    pkgJson: firstPath + subPath.substring(0, firstSlash) + '/package.json'
   }
 }