1 files changed, 43 insertions, 0 deletions
diff --git a/pkgs/build-support/node/build-npm-package/hooks/npm-install-hook.sh b/pkgs/build-support/node/build-npm-package/hooks/npm-install-hook.sh
new file mode 100644
index 0000000000000..4a222de26bbf0
--- /dev/null
+++ b/pkgs/build-support/node/build-npm-package/hooks/npm-install-hook.sh
@@ -0,0 +1,43 @@
+# shellcheck shell=bash
+
+npmInstallHook() {
+    echo "Executing npmInstallHook"
+
+    runHook preInstall
+
+    # `npm pack` writes to cache
+    npm config delete cache
+
+    local -r packageOut="$out/lib/node_modules/$(@jq@ --raw-output '.name' package.json)"
+
+    while IFS= read -r file; do
+        local dest="$packageOut/$(dirname "$file")"
+        mkdir -p "$dest"
+        cp "$file" "$dest"
+    done < <(@jq@ --raw-output '.[0].files | map(.path) | join("\n")' <<< "$(npm pack --json --dry-run $npmPackFlags "${npmPackFlagsArray[@]}" $npmFlags "${npmFlagsArray[@]}")")
+
+    while IFS=" " read -ra bin; do
+        mkdir -p "$out/bin"
+        makeWrapper @hostNode@ "$out/bin/${bin[0]}" --add-flags "$packageOut/${bin[1]}"
+    done < <(@jq@ --raw-output '(.bin | type) as $typ | if $typ == "string" then
+        .name + " " + .bin
+        elif $typ == "object" then .bin | to_entries | map(.key + " " + .value) | join("\n")
+        else "invalid type " + $typ | halt_error end' package.json)
+
+    local -r nodeModulesPath="$packageOut/node_modules"
+
+    if [ ! -d "$nodeModulesPath" ]; then
+        npm prune --omit dev
+        find node_modules -maxdepth 1 -type d -empty -delete
+
+        cp -r node_modules "$nodeModulesPath"
+    fi
+
+    runHook postInstall
+
+    echo "Finished npmInstallHook"
+}
+
+if [ -z "${dontNpmInstall-}" ] && [ -z "${installPhase-}" ]; then
+    installPhase=npmInstallHook
+fi