Split lib.civet into many files

Cleanup non-null assertion handling

Made some more progress on internal typings

Fix #900 - Declaration condition in switch statements w/ nested binop

Typechecking CLI

Fix #959 - Don't duplicate comments when hoisting refs

Fix #998 - Properly handle void async generators and iterators

Fix #1002 - Allow postfix loops, etc. in declarations

Recognize indentation of type alias

Add type assignment shorthand

Support extends shorthand in type parameters

Unary prefix and postfix in braced literal shorthand

Fix hasProp type

Fixes #1013

Fixes #1012

Allow for checking arbitrary strings, and
handle arbitrary `{}.constructor` type.

Fix #947 - Better const function semantics

Pipe new

Fix cached node mutation when removing trailing comma from rest property

Co-authored-by: Erik Demaine <[email protected]>

Don't create empty var decs with auto-var

Allow multiple props per line in implicit object literals

Avoid implicit returns from fat arrows

Fixes #995

Fixes #952

Consistent arrow vs. pipe precedence

Fixes #949

Update code around pattern matching to civet style

Report error nodes in LSP

Fix triple slash in pattern matching switch

Support "Error" nodes in Playground

Fix TS infer, extends, typeof

Nonfatal for JavaScript-specific errors

Fixes #979

Fixes #984

Allow enums on one line

perf-compare improvements

export default shorthand

Fix spread bug extracted from lib.civet

Fixes #965

Fix private field glob getters