State of JS 2024; compiling JS via Porffor; source map format specification; December TC39 meeting;

• It truly compiles: Binaries don’t include a runtime and are therefore small.
• It will eventually support all of the language: The homepage shows how much of the Test262 ECMAScript test suite Porffor currently passes: 56.45%.
• If you are looking for more information, you can listen to a podcast about Porffor on YouTube.

How is Porffor different from AssemblyScript? AssemblyScript compiles a subset of TypeScript to Wasm and is more low-level than Porffor (with pros and cons).

Quoting the specification:

The source map format has the following goals:

• Support source-level debugging allowing bidirectional mapping
• Support server-side stack trace deobfuscation

The latest drafts are available at tc39.es.

• import.sync(): new at stage 1
• New “integrity level” (beyond frozen, sealed and non-extensible): new at stage 1
• Immutable ArrayBuffers: from stage 1 to 2
• Error.isError(): from stage 2.7 to 3

• More currency display choices: new at stage 2
• Intl.DurationFormat: from stage 3 to 4

• assert.partialDeepStrictEqual()
• --trace-env and --trace-env-[js|native]-stack
• Module node:sqlite can now be used without a command line flag