chore: unpack tarball for bundlesize (#1037)

gzip compresses slightly different each time

.circleci/config.yml

@@ -42,12 +42,9 @@ jobs:
           command: ./node_modules/.bin/lerna exec "curl -s https://codecov.io/bash | bash"
       - run:
           name: Build tarball for BundleSize
-          command: |
-            cp yarn.lock packages/cli
-            cd packages/cli
-            ./node_modules/.bin/oclif-dev pack --no-xz --targets ''
+          command: ./scripts/bundlesize
       - store_artifacts:
-          path: ./packages/cli/dist
+          path: ./bundlesize.tar
   release:
     <<: *defaults
     steps:

scripts/bundlesize

@@ -0,0 +1,21 @@
+#!/usr/bin/env bash
+
+set -ex
+
+ROOT=$(pwd)
+
+mkdir -p "$ROOT/bundlesize"
+echo {} > "$ROOT/bundlesize/package.json"
+
+tarballs=()
+for pkg in $(ls packages); do
+  cd "$ROOT/packages/$pkg"
+  yarn pack --filename pack.tar.gz &
+  tarballs+=("$ROOT/packages/$pkg/pack.tar.gz")
+done
+
+wait
+cd "$ROOT/bundlesize"
+yarn add ${tarballs[*]}
+mv node_modules bundlesize
+tar -cf "$ROOT/bundlesize.tar" bundlesize