Support @gentype.import as an alias to @genType.import in the compiler

See #6018

Author: cristianoc

CHANGELOG.md

@@ -67,6 +67,7 @@ These are only breaking changes for unformatted code.
 - Fix issue in the compiler back-end where async functions passed to an `@uncurry` external would be inlined and transformed in a way that loses async https://github.com/rescript-lang/rescript-compiler/pull/6010
 - Fix location issue for the treatment of `async` functions where hovering on the body with a type error would show `'a => promise<'a>` everywhere https://github.com/rescript-lang/rescript-compiler/pull/6012
 - Fix formatting of `switch` expressions that contain brace `cases` inside https://github.com/rescript-lang/rescript-compiler/pull/6015
+- Support `@gentype.import` as an alias to `@genType.import` in the compiler https://github.com/rescript-lang/rescript-compiler/pull/6020
 
 #### :nail_care: Polish
 

jscomp/ext/literals.ml

@@ -148,7 +148,8 @@ let node_parent = ".."
 
 let node_current = "."
 
-let gentype_import = "genType.import"
+let gentype_import1 = "genType.import"
+let gentype_import2 = "gentype.import"
 
 let bsbuild_cache = ".bsbuild"
 

jscomp/frontend/ast_attributes.ml

@@ -119,7 +119,8 @@ let external_attrs =
     "send";
     "new";
     "set_index";
-    Literals.gentype_import;
+    Literals.gentype_import1;
+    Literals.gentype_import2;
   |]
 
 let first_char_special (x : string) =

jscomp/frontend/ast_external_process.ml

@@ -235,7 +235,7 @@ let parse_external_attributes (no_arguments : bool) (prim_name_check : string)
 
   Ext_list.fold_left prim_attributes ([], init_st)
     (fun (attrs, st) (({ txt; loc }, payload) as attr) ->
-      if txt = Literals.gentype_import then
+      if txt = Literals.gentype_import1 || txt = Literals.gentype_import2 then
         let bundle =
           "./"
           ^ Ext_filename.new_extension

jscomp/gentype_tests/typescript-react-example/src/ImportJsValue.bs.js

@@ -4,6 +4,8 @@
 
 import {round as roundNotChecked} from './MyMath';
 
+import {round2 as round2NotChecked} from './MyMath';
+
 import {area as areaNotChecked} from './MyMath';
 
 import {returnMixedArray as returnMixedArrayNotChecked} from './MyMath';
@@ -28,6 +30,12 @@ export const roundTypeChecked: (_1:number) => number = roundNotChecked;
 // Export 'round' early to allow circular import from the '.bs.js' file.
 export const round: unknown = roundTypeChecked as (_1:number) => number;
 
+// In case of type error, check the type of 'round2' in 'ImportJsValue.res' and './MyMath'.
+export const round2TypeChecked: (_1:number) => number = round2NotChecked;
+
+// Export 'round2' early to allow circular import from the '.bs.js' file.
+export const round2: unknown = round2TypeChecked as (_1:number) => number;
+
 // In case of type error, check the type of 'area' in 'ImportJsValue.res' and './MyMath'.
 export const areaTypeChecked: (_1:point) => number = areaNotChecked;
 

jscomp/gentype_tests/typescript-react-example/src/ImportJsValue.gen.tsx

@@ -6,6 +6,11 @@ external /* This is the module to import from. */
 /* Name and type of the JS value to bind to. */
 round: float => float = "round"
 
+@gentype.import("./MyMath")
+external round2: float => float = "round2"
+
+let _ = round2
+
 @genType
 type point = {
   x: int,

jscomp/gentype_tests/typescript-react-example/src/ImportJsValue.res

@@ -2,6 +2,8 @@
 
 export const round: (_: number) => number = Math.round;
 
+export const round2 = round;
+
 // tslint:disable-next-line:only-arrow-functions
 export const area = function(point: { x: number; y?: number }): number {
   return point.x * (point.y === undefined ? 1 : point.y);