SuiteScript 2.0 is based on the ECMAScript 5.1 (ES5.1) edition of the specification. SuiteScript 2.1 supports the language capabilities included in the ECMAScript 2019 (ES2019) edition of the specification.
Enhanced application performance GraalVM Enterprise’s JavaScript engine executes applications with higher performance. • When executing pure JavaScript code, SuiteScript 2.1 is up to 4 times faster than SuiteScript 2.0 • Module loading times in SuiteScript 2.1 are up to 50% faster than SuiteScript 2.0 • Initialization of fresh scripting scope in preparation to run user code is upto 70% faster in SuiteScript 2.1 when compared to 2.0