Use prepublishOnly script instead of prepublish
The prepublish step is deprecated for npm scripts. The intention here is
to run the build only before publishing the packages.
diff --git a/package.json b/package.json
index c88a13d..b01a129 100644
--- a/package.json
+++ b/package.json
@@ -23,7 +23,7 @@
"clean": "lerna exec -- rimraf LICENSE NOTICE esm lib",
"lint": "eslint --fix --quiet .",
"prepare": "lerna run prepare",
- "prepublish": "yarn run build",
+ "prepublishOnly": "yarn run build",
"start": "webpack-dev-server --hot --mode development",
"test": "cross-env BABEL_ENV=test nyc mocha packages/*/test/**/*.js",
"validate": "cross-env BABEL_ENV=test nyc mocha test/**/*.js"
