fix(npm-scripts): run build script only in postrelease

Author: Hotell

package.json

@@ -29,7 +29,7 @@
     "cleanup": "shx rm -rf dist",
     "prebuild": "npm run cleanup && npm run verify",
     "build": "tsc && tsc --target es2018 --outDir dist/esm2015 && rollup -c config/rollup.config.js && rollup -c config/rollup.config.js --environment NODE_ENV:production",
-    "postbuild": "node scripts/copy && node scripts/build && npm run size",
+    "postbuild": "node scripts/copy && npm run size",
     "docs": "typedoc -p . --theme minimal --target 'es6' --excludeNotExported --excludePrivate --ignoreCompilerErrors --exclude \"**/src/**/__tests__/*.*\" --out docs src/",
     "test": "jest -c ./config/jest.config.js",
     "test:watch": "npm t -- --watch",