const fs = require("fs"); const packageFile = fs.readFileSync("./package.json").toString(); const newPackageFile = packageFile.replace( /"version": "[0-9]+.[0-9]+.[0-9]+"/, `"version": "${__NEW_VERSION__}"` ); fs.writeFileSync("./package.json", newPackageFile); const indexFile = fs.readFileSync("./src/index.ts").toString(); const newIndexFile = indexFile.replace(/version\("[0-9]+\.[0-9]+\.[0-9]+"\)/); fs.writeFileSync("./src/index.ts", newIndexFile);