add class.hasInstance proposal (Stage 1) support

packages/babel-parser/src/parser/expression.js

@@ -903,8 +903,8 @@ export default class ExpressionParser extends LValParser {
         this.expectPlugin("classBrandCheck");
         return this.parseClassHasInstanceExpression(
           node,
-          this.startPos,
-          this.startLoc,
+          this.state.startPos,
+          this.state.startLoc,
         );
       } else {
         throw this.raise(Errors.UnexpectedToken, { at: node });
@@ -919,10 +919,11 @@ export default class ExpressionParser extends LValParser {
     this.next(); // eat `(`
     const node = this.startNodeAt(startPos, startLoc);
     const argus = this.parseCallExpressionArguments(tt.parenR);
-    if (argus.length !== 1) {
-      this.raise(Errors.InvalidArguments, { at: startLoc });
+    if (argus.length !== 1 || (argus[0] && argus[0].type === "SpreadElement")) {
+      throw this.raise(Errors.InvalidArguments, {
+        at: this.state.lastTokStartLoc,
+      });
     }
-
     node.instance = argus[0];
 
     this.state.stop = true;

packages/babel-parser/test/fixtures/experimental/class-brand-check/invalid-arguments/options.json

@@ -1,5 +1,5 @@
 {
-    "throws": "This experimental syntax requires enabling the parser plugin: \"classBrandCheck\". (3:14)",
-    "plugins": []
+    "throws": "SyntaxError: Invalid Arguments. (3:26)",
+    "plugins": ["classBrandCheck"]
   }
-
+

packages/babel-parser/test/fixtures/experimental/class-brand-check/multiple-arguments-2/input.js

@@ -0,0 +1,5 @@
+class Foo {
+    bar(foo) {
+        class.hasInstance(...foo)
+    }
+}

packages/babel-parser/test/fixtures/experimental/class-brand-check/multiple-arguments-2/options.json

@@ -0,0 +1,5 @@
+{
+    "throws": "SyntaxError: Invalid Arguments. (3:32)",
+    "plugins": ["classBrandCheck"]
+  }
+

packages/babel-parser/test/fixtures/experimental/class-brand-check/multiple-arguments-3/input.js

@@ -0,0 +1,5 @@
+class Foo {
+    bar(foo,bar) {
+        class.hasInstance(foo,...bar)
+    }
+}

packages/babel-parser/test/fixtures/experimental/class-brand-check/multiple-arguments-3/options.json

@@ -0,0 +1,5 @@
+{
+    "throws": "SyntaxError: Invalid Arguments. (3:36)",
+    "plugins": ["classBrandCheck"]
+  }
+

packages/babel-parser/test/fixtures/experimental/class-brand-check/multiple-arguments/input.js

@@ -0,0 +1,5 @@
+class Foo {
+    bar(foo,bar) {
+        class.hasInstance(foo,bar)
+    }
+}

packages/babel-parser/test/fixtures/experimental/class-brand-check/multiple-arguments/options.json

@@ -0,0 +1,5 @@
+{
+    "throws": "SyntaxError: Invalid Arguments. (3:33)",
+    "plugins": ["classBrandCheck"]
+  }
+