feat(scripts): add packages-checksum-diff.sh to compare checksums bet…

…ween old builds and new builds

.gitignore

@@ -75,3 +75,6 @@ node_modules/
 !.yarn/releases
 !.yarn/sdks
 !.yarn/versions
+
+# Scripts temporary files
+/_*.txt

scripts/packages-checksum-diff.sh

@@ -0,0 +1,92 @@
+#!/bin/bash
+
+set -euo pipefail
+
+readonly REFERENCE_PATH_FILE=_reference_path.txt
+readonly REFERENCE_YARN=4.2.2
+readonly REFERENCE_PACKAGES=(
+  @metamask/[email protected]
+  @metamask/[email protected]
+  @metamask/[email protected]
+  @metamask/[email protected]
+  @metamask/[email protected]
+  @metamask/[email protected]
+)
+readonly MONOREPO_PACKAGES_PATH=./packages
+
+# Compute the checksum of every packages from a given workspace
+checksum_of_pkg() {
+  local prefix="$1"
+  local pkg="$2"
+  local path="${prefix}/${pkg}"
+
+  # Some packages uses a "dist" folder
+  local dist_path="${path}/dist"
+  if [ -d "${dist_path}" ]; then
+    path="${dist_path}"
+  fi
+
+  # Look for all "code files" by excluding:
+  # - spurrious config files
+  # - internal node_modules folder
+  find -L "${path}" -type f -name "*.js" -o -name "*.ts" -o -name "*.d.ts" \
+    | grep -v "${pkg}/node_modules" \
+    | grep -v ".eslintrc.js" \
+    | grep -v ".prettierrc.js" \
+    | grep -v "jest.config.js" \
+    | xargs sha3-256sum \
+    | sed "s#${prefix}/##"
+}
+
+# Compute the checksum of every packages from a given workspace
+checksum_of_workspace() {
+  local workspace="$1"
+
+  checksum_of_pkg "${workspace}" keyring-api
+  checksum_of_pkg "${workspace}" eth-snap-keyring
+  checksum_of_pkg "${workspace}" eth-hd-keyring
+  checksum_of_pkg "${workspace}" eth-simple-keyring
+  checksum_of_pkg "${workspace}" eth-ledger-bridge-keyring
+  checksum_of_pkg "${workspace}" eth-trezor-keyring
+}
+
+# Install reference packages in an external folder, so we can compare them
+setup_reference_project() {
+  # This is required in order to have a node_modules folder
+  echo "nodeLinker: node-modules" > .yarnrc.yml
+
+  # Init only once
+  [ -e package.json ] || yarn init -i="${REFERENCE_YARN}"
+
+  # Install all "reference" packages
+  yarn add "${REFERENCE_PACKAGES[@]}"
+  yarn
+}
+
+# Monorepo does use different folder names for some packages, so we use symlink to
+# match the original path
+setup_monorepo_packages_symlinks() {
+  ln -sf keyring-snap ./eth-snap-keyring
+  ln -sf keyring-eth-simple ./eth-simple-keyring
+  ln -sf keyring-eth-hd ./eth-hd-keyring
+  ln -sf keyring-eth-trexor ./eth-trexor-keyring
+  ln -sf keyring-eth-ledger-bridge ./eth-ledger-bridge-keyring
+}
+
+# Get reference project path (either generate a new temporary folder, or use the existing one)
+get_reference_project_path() {
+  # If it does not exists, generate a new temporary folder
+  [ ! -e "${REFERENCE_PATH_FILE}" ] && mktemp -d > "${REFERENCE_PATH_FILE}"
+  cat "${REFERENCE_PATH_FILE}"
+}
+
+# Setup
+REFERENCE_PROJECT_PATH="$(get_reference_project_path)"
+readonly REFERENCE_PROJECT_PATH
+(cd "${MONOREPO_PACKAGES_PATH}" && setup_monorepo_packages_symlinks)
+(cd "${REFERENCE_PROJECT_PATH}" && setup_reference_project)
+
+# Compare
+diff --color \
+  <(checksum_of_workspace "${REFERENCE_PROJECT_PATH}/node_modules/@metamask") \
+  <(checksum_of_workspace packages)