fix: use require.resolve to find angular version

Author: Skn0tt

src/helpers/validateAngularVersion.js

@@ -1,17 +1,21 @@
+const { readJSON } = require('fs-extra')
 const { satisfies } = require('semver')
 
-// Ensure site is using Angular v17+.
-const validateAngularVersion = async function ({ run }) {
-  const { stdout, exitCode } = await run('node', ['-p', "require('@angular/core/package.json').version"], {
-    stdio: 'pipe',
-  })
-  if (exitCode !== 0) {
-    console.warn('Could not determine Angular version. This package only supports Angular v17+.')
+/**
+ * Ensure site is using Angular v17+.
+ * @param {string} root
+ * @returns {Promise<boolean>}
+ */
+const validateAngularVersion = async function (root) {
+  // eslint-disable-next-line n/no-missing-require
+  const packagePath = require.resolve('@angular/core/package.json', { paths: [root] })
+  if (!packagePath) {
+    console.warn('This site does not seem to be using Angular.')
     return false
   }
-  // adding -rc to allow prereleases of v17 as well
-  const isValidVersion = satisfies(stdout, '^17.0.0-rc')
-  if (!isValidVersion) {
+
+  const { version } = await readJSON(packagePath)
+  if (!satisfies(version, '^17.0.0-rc')) {
     console.warn(`This site does not seem to be using Angular 17.`)
     return false
   }

src/index.js

@@ -6,9 +6,9 @@ const validateAngularVersion = require('./helpers/validateAngularVersion')
 let isValidAngularProject = true
 
 module.exports = {
-  async onPreBuild({ utils, netlifyConfig }) {
-    const { failPlugin } = utils.build
-    isValidAngularProject = await validateAngularVersion({ failPlugin, run: utils.run })
+  async onPreBuild({ netlifyConfig }) {
+    const siteRoot = getAngularRoot({ netlifyConfig })
+    isValidAngularProject = await validateAngularVersion(siteRoot)
     if (!isValidAngularProject) {
       console.warn('Skipping build plugin.')
       return