Introducing the bigint (#6670)

* add primitive bigint

* Js_bigint adding operations

* Js_json adding support of bigint

* rename test

* remove bigint from Js_json

* stale comment

* remove unnecessary guard in pattern matching

* fix literal_overlaps

* primitive bigint instead of Js_bigint.t

* variant coercion for bigint

* add error test

* add optimization of comparisons

* add bigint_test and binding bigint methods, NaN, etc

* stale comment

* add bigint pow operator

* clean up Js_exp for bigint operations

* remove isNaN, isInfinite

* remove NaN from BigInt

* fix compare function

* fix test

* add bitwise operations

* eta conversion for bigint

* optimization

* bitwise operators in Js_bigint

* add test for bitwise operations

* remove bigint operators from parser and pervasives

* rebase clean up

* update change log

* fix incorrect compare bigint values

* remove leftover

* removed leftover

* handling and testing bigint values with leading zeros and minus

* remove optimization const_compare from parmatch and add test

* add tests for pattern matching bigint liternal

* support only decimal bigint literal and pattern matching

* fix test

* handle delimiter '_'

* throw Division_by_zero in bigint div, mod

* call runtime only when dividing by zero

* fix incorrect dividing by zero with non constant

* remove is_safe from Pdivbigint, Pmodbigint

* stale comments

* fix bigint_utils.compare

* change bigint model to sign * string

* clean up

Author: mununki

CHANGELOG.md

@@ -12,6 +12,10 @@
 
 # 11.1.0-rc.6 (Unreleased)
 
+#### :rocket: New Feature
+
+- Add the primitive bigint type https://github.com/rescript-lang/rescript-compiler/pull/6670
+
 #### :bug: Bug Fix
 
 - Fix mishandling of uncurried functions in super errors. https://github.com/rescript-lang/rescript-compiler/pull/6694

jscomp/build_tests/super_errors/expected/bigint_match_literal.res.expected

@@ -0,0 +1,11 @@
+
+  Warning number 11
+  /.../fixtures/bigint_match_literal.res:3:3-4
+
+  1 │ let m1 = switch 1n {
+  2 │ | 0001n => 1
+  3 │ | 1n => 1
+  4 │ | -0001n => -1
+  5 │ | _ => 0
+
+  this match case is unused.