Add support for npm 9+ (#139)

* Add support for npm 9+

Fixes #138

* Simplify case

* Simplify case

* Simplify case

Co-authored-by: David Heinemeier Hansson <david@basecamp.com>

Author: jcoyne

lib/install/esbuild/install.rb

@@ -4,9 +4,13 @@
 say "Add build script"
 build_script = "esbuild app/javascript/*.* --bundle --sourcemap --outdir=app/assets/builds --public-path=assets"
 
-if (`npx -v`.to_f < 7.1 rescue "Missing")
-  say %(Add "scripts": { "build": "#{build_script}" } to your package.json), :green
-else
+case `npx -v`.to_f
+when 7.1...8.0
   run %(npm set-script build "#{build_script}")
   run %(yarn build)
+when 8.0..
+  run %(npm pkg set scripts.build="#{build_script}")
+  run %(yarn build)
+else
+  say %(Add "scripts": { "build": "#{build_script}" } to your package.json), :green
 end

lib/install/rollup/install.rb

@@ -5,9 +5,13 @@
 say "Add build script"
 build_script = "rollup -c --bundleConfigAsCjs rollup.config.js"
 
-if (`npx -v`.to_f < 7.1 rescue "Missing")
-  say %(Add "scripts": { "build": "#{build_script}" } to your package.json), :green
-else
+case `npx -v`.to_f
+when 7.1...8.0
   run %(npm set-script build "#{build_script}")
   run %(yarn build)
+when 8.0..
+  run %(npm pkg set scripts.build="#{build_script}")
+  run %(yarn build)
+else
+  say %(Add "scripts": { "build": "#{build_script}" } to your package.json), :green
 end

lib/install/webpack/install.rb

@@ -5,9 +5,13 @@
 say "Add build script"
 build_script = "webpack --config webpack.config.js"
 
-if (`npx -v`.to_f < 7.1 rescue "Missing")
-  say %(Add "scripts": { "build": "#{build_script}" } to your package.json), :green
-else
+case `npx -v`.to_f
+when 7.1...8.0
   run %(npm set-script build "#{build_script}")
   run %(yarn build)
+when 8.0..
+  run %(npm pkg set scripts.build="#{build_script}")
+  run %(yarn build)
+else
+  say %(Add "scripts": { "build": "#{build_script}" } to your package.json), :green
 end