Symlink node_modules.asar to node_modules in lib/vscode

Closes #2197.

ci/build/build-release.sh

@@ -96,6 +96,10 @@ EOF
   # yarn to fetch node_modules if necessary without build scripts running.
   # We cannot use --no-scripts because we still want dependent package scripts to run.
   jq 'del(.scripts)' < "$VSCODE_SRC_PATH/package.json" > "$VSCODE_OUT_PATH/package.json"
+
+  pushd "$VSCODE_OUT_PATH"
+  symlink_asar
+  popd
 }
 
 main "$@"

ci/build/npm-postinstall.sh

@@ -41,6 +41,19 @@ main() {
 vscode_yarn() {
   cd lib/vscode
   yarn --production --frozen-lockfile
+
+  # VS Code needs a node_modules.asar but that's just a duplicate of stuff we
+  # already have in node_modules.
+  if [ ! -e node_modules.asar ]; then
+    if [ "${WINDIR-}" ]; then
+      # mklink takes the link name first.
+      mklink /J node_modules.asar node_modules
+    else
+      # ln takes the link name second.
+      ln -s node_modules node_modules.asar
+    fi
+  fi
+
   cd extensions
   yarn --production --frozen-lockfile
   for ext in */; do

ci/dev/postinstall.sh

@@ -0,0 +1,14 @@
+#!/usr/bin/env bash
+set -euo pipefail
+
+main() {
+  cd "$(dirname "$0")/../.."
+  source ./ci/lib.sh
+
+  cd lib/vscode
+  yarn ${CI+--frozen-lockfile}
+
+  symlink_asar
+}
+
+main "$@"

ci/lib.sh

@@ -1,4 +1,5 @@
 #!/usr/bin/env bash
+set -euo pipefail
 
 pushd() {
   builtin pushd "$@" > /dev/null
@@ -93,3 +94,17 @@ export OS
 # RELEASE_PATH is the destination directory for the release from the root.
 # Defaults to release
 RELEASE_PATH="${RELEASE_PATH-release}"
+
+# Symlink node_modules.asar to node_modules. VS Code needs a node_modules.asar
+# but that's just a duplicate of stuff we already have in node_modules.
+symlink_asar() {
+  if [ ! -e node_modules.asar ]; then
+    if [ "${WINDIR-}" ]; then
+      # mklink takes the link name first.
+      mklink /J node_modules.asar node_modules
+    else
+      # ln takes the link name second.
+      ln -s node_modules node_modules.asar
+    fi
+  fi
+}