feat: improve nodejs translators/builders

- also execute preinstall script during package installation
- disable devDependencies if no instal script present by default

src/subsystems/nodejs/builders/granular/default.nix

@@ -473,6 +473,9 @@
           elif [ -n "$runBuild" ] && [ "$(jq '.scripts.build' ./package.json)" != "null" ]; then
             npm run build
           else
+            if [ "$(jq '.scripts.preinstall' ./package.json)" != "null" ]; then
+              npm --production --offline --nodedir=$nodeSources run preinstall
+            fi
             if [ "$(jq '.scripts.install' ./package.json)" != "null" ]; then
               npm --production --offline --nodedir=$nodeSources run install
             fi

src/subsystems/nodejs/translators/package-json/default.nix

@@ -47,11 +47,29 @@
       cd ./$relPath
       rm -rf package-lock.json
 
-      if [ "$(jq '.project.subsystemInfo.noDev' -c -r $jsonInput)" == "true" ]; then
+      hasInstallScript=false
+      if [ "$(jq 'has("scripts")' -c -r package.json)" == "false" ]; then
+        :
+      elif [ "$(jq '.scripts | has("preinstall")' -c -r package.json)" == "true" ]; then
+        hasInstallScript=true
+      elif [ "$(jq '.scripts | has("install")' -c -r package.json)" == "true" ]; then
+        hasInstallScript=true
+      elif [ "$(jq '.scripts | has("postinstall")' -c -r package.json)" == "true" ]; then
+        hasInstallScript=true
+      else
+        :
+      fi
+
+      if [ "$hasInstallScript" == "false" ]; then
+        echo "package.json does not define an [pre|post]install script -> omitting dev dependencies"
+      fi
+
+      if [ "$hasInstallScript" == "false" ] \
+          || [ "$(jq '.project.subsystemInfo.noDev' -c -r $jsonInput)" == "true" ]; then
         echo "excluding dev dependencies"
         jq '.devDependencies = {}' ./package.json > package.json.mod
         mv package.json.mod package.json
-        npm install --package-lock-only --production $npmArgs
+        npm install --package-lock-only --omit=dev $npmArgs
       else
         npm install --package-lock-only $npmArgs
       fi

src/subsystems/nodejs/translators/package-lock/default.nix

@@ -25,7 +25,15 @@
   } @ args: let
     b = builtins;
 
-    dev = ! noDev;
+    hasInstallScript =
+      (packageJson ? scripts.preinstall)
+      || (packageJson ? scripts.install)
+      || (packageJson ? scripts.postinstall);
+
+    noDev =
+      if ! hasInstallScript
+      then true
+      else args.noDev;
     name = project.name;
     tree = args.tree.getNodeFromPath project.relPath;
     relPath = project.relPath;
@@ -70,11 +78,23 @@
       then let
         path = getPath dependencyObject;
       in
-        (
-          b.fromJSON
-          (b.readFile "${source}/${path}/package.json")
-        )
-        .version
+        if ! (l.pathExists "${source}/${path}/package.json")
+        then
+          throw ''
+            The lock file references a sub-package residing at '${source}/${path}',
+            but that directory doesn't exist or doesn't contain a package.json
+
+            The reason might be that devDependencies are not included in this package release.
+            Possible solutions:
+              - get full package source via git and translate from there
+              - disable devDependencies by passing `noDev` to the translator
+          ''
+        else
+          (
+            b.fromJSON
+            (b.readFile "${source}/${path}/package.json")
+          )
+          .version
       else if lib.hasPrefix "https://" dependencyObject.version
       then "unknown"
       else dependencyObject.version;
@@ -153,7 +173,7 @@
           version = getVersion pdata;
         })
         (lib.filterAttrs
-          (pname: pdata: ! (pdata.dev or false) || dev)
+          (pname: pdata: ! (pdata.dev or false) || ! noDev)
           parsedDependencies);
 
       subsystemName = "nodejs";
@@ -186,7 +206,7 @@
       in
         lib.filter
         (pdata:
-          dev || ! (pdata.dev or false))
+          ! noDev || ! (pdata.dev or false))
         (lib.flatten (serialize inputData));
 
       getName = dependencyObject: dependencyObject.pname;