ECMAScript 2025, the next version of an ECMA International standard for JavaScript, will standardize new JavaScript capabilities ranging from JSON modules to import attributes, new Set methods, sync iterator helpers, and regular expression modifiers.
The ECMAScript 2025 specification most likely be finalized in June. All told, nine finished proposals on the ECMAScript development committee’s GitHub page are designated as expected to be published this year. Another proposal slated for 2025, for time duration formatting objects, appears on a different page. Development of ECMAScript is under the jurisdiction of the ECMA International Technical Committee 39 (TC39).
For JSON modules, the proposal calls for importing JSON files as modules. This plan builds on the import attributes proposal to add the ability to import a JSON module in a common way across JavaScript environments.