chore: update release process

.circleci/config.yml

@@ -106,7 +106,6 @@ jobs:
     steps:
       - checkout
       - run: yarn
-      - run: npx semantic-release
       - run: ./release-percy.sh
 workflows:
   version: 2

RELEASING.md

@@ -1,3 +1,6 @@
 # Releasing
 
-Releasing of the `@percy/agent` package is handled automatically with the [semantic-release](https://github.com/semantic-release/semantic-release) package.
+- Bump the version in package.json and commit the change
+- Create a git tag for the new version
+- Push the commit and tag to GitHub
+- CircleCI will publish new versions of the package

release-percy.sh

@@ -1,20 +1,30 @@
 #!/bin/bash
 
-# This script is responsible for shipping the `percy` shadow package.
+# Set the npm registry auth token
+echo "//registry.npmjs.org/:_authToken=$NPM_TOKEN" > ~/.npmrc
+
+# Grab the local version and check to see if that version exists on npm
+agentAlreadyReleased=$(npm view @percy/agent versions | grep $(node -p "require('./package.json').version"))
+
+# If the package with that version has not yet been released, go ahead and release it.
+if [ !$agentAlreadyReleased ]; then
+  npm publish
+else
+  echo "Skipping @percy/agent publishing because the desired version has already been published."
+fi
+
+# Ship the `percy` shadow package
 # https://www.npmjs.com/package/percy
-#
-# Release of the `@percy/agent` package is handled with semantic-release
 
 # First we jam `percy` into the package name
 sed -i 's/@percy\/agent/percy/g' package.json
 
 # Next we grab the local version and check to see if that version exists on npm
-packageAlreadyReleased=$(npm view percy versions | grep $(node -p "require('./package.json').version"))
+percyAlreadyReleased=$(npm view percy versions | grep $(node -p "require('./package.json').version"))
 
 # If the package with that version has not yet been released, go ahead and release it.
-if [ !$packageAlreadyReleased ]; then
-  echo "//registry.npmjs.org/:_authToken=$NPM_TOKEN" > ~/.npmrc
+if [ !$percyAlreadyReleased ]; then
   npm publish
 else
-  echo "Skipping percy package publishing because the desired version has already been published."
+  echo "Skipping percy publishing because the desired version has already been published."
 fi