facebook/flow v0.194.0

on GitHub

Likely to cause new Flow errors:

• Casting an enum to empty will now properly error, e.g. (E.A: empty).

New Features:

• Added a quick fix for the unused-promise-in-async-scope lint which will insert await.
• Added support for a number of additional bigint features. These include allowing comparison (<, >, <=, >=), update (++, --) and arithmetic operators (+, -, ~, *) to be used with bigints.
• Added sketchy-null-bigint lint to match the behavior of the other sketchy-null-* lints for bigints.
• Added Flow Enums support for declare enum and declare export enum. Keep in mind that users need to have enabled Flow Enums if you wish to create library definitions that use them.

Parser:

• Switch to dune to build and install the flow_parser OPAM package. Some modules in src/parser/ like Comment_utils are newly available.
• Decrease the size of flow_parser.js by roughly 25%, to 768kb.
• Fix a bug where declare opaque type was parsed as an OpaqueType when interned comments are disabled.