Implemented the Promise.withResolvers proposal. It is available in ECMAScript staging mode (--js.ecmascript-version=staging).
Implementation of Async Iterator Helpers proposal (that was split out from Iterator Helpers proposal) was moved behind the experimental option --js.async-iterator-helpers.
Implemented the Well-Formed Unicode Strings proposal. It is available in ECMAScript staging mode (--js.ecmascript-version=staging).
Implemented the JSON.parse source text access proposal. It is available in ECMAScript staging mode (--js.ecmascript-version=staging).
Updated Node.js to version 18.18.2.
WebAssembly support in Node.js has been enabled by default. It can be disabled using the experimental option --js.webassembly=false.
--js.import-assertions option has been replaced by --js.import-attributes option because the corresponding proposal has migrated from the usage of assertions to the usage of attributes.
NOTE: GraalVM no longer ships with a "js" ScriptEngine. Please either use the Maven dependency or explicitly put js-scriptengine.jar on the module path. See ScriptEngine documentation for details.
ECMAScript 2023 mode/features enabled by default.
Updated Node.js to version 18.17.1.
Implemented the Async Context proposal. It is available behind the experimental option --js.async-context.
FinalizationRegistry.prototype.cleanupSome is not enabled by default any more; it has been moved to ECMAScript staging mode (--js.ecmascript-version=staging).
Added an experimental option --js.allow-narrow-spaces-in-date-format (enabled by default). When this option is set to false then narrow spaces in date/time formats are replaced by a space (0x20).
Made option js.console stable and allowed in SandboxPolicy.UNTRUSTED.
Made option js.unhandled-rejections stable and allowed in SandboxPolicy.CONSTRAINED.
Added option js.allow-eval that is stable and allowed in SandboxPolicy.UNTRUSTED.
Deprecated option js.disable-eval, superseded by js.allow-eval.
Implemented the String.dedent proposal. It is available in ECMAScript staging mode (--js.ecmascript-version=staging).
Implemented the Change Array by copy proposal. It is available in ECMAScript staging mode (--js.ecmascript-version=staging).
Added BigInteger interop support.
Note that foreign BigIntegers require an explicit type cast using the BigInt function to opt into JS BigInt semantics.
The default semantics is to treat all foreign numbers like JS Number values, regardless of the original value or type.
Arithmetic operators perform an implicit lossy conversion to double; mixing a JS BigInt with any non-JS number always throws.
Comparison operators attempt to do a precise value comparison where possible.
JS BigInt values can now be converted to java.math.BigInteger host objects, although a target type mapping may still be necessary to ensure consistent type mapping if the target type is ambiguous or absent.
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