diff --git a/packages/babel-parser/src/plugins/typescript/index.ts b/packages/babel-parser/src/plugins/typescript/index.ts
index e781b07987be..61eae5d827c1 100644
--- a/packages/babel-parser/src/plugins/typescript/index.ts
+++ b/packages/babel-parser/src/plugins/typescript/index.ts
@@ -52,6 +52,7 @@ type TsModifier =
   | "declare"
   | "static"
   | "override"
+  | "const"
   | N.Accessibility
   | N.VarianceAnnotations;
 
@@ -324,7 +325,11 @@ export default (superClass: ClassWithMixin<typeof Parser, IJSXParserMixin>) =>
       allowedModifiers: T[],
       stopOnStartOfClassStaticBlock?: boolean,
     ): T | undefined | null {
-      if (!tokenIsIdentifier(this.state.type) && this.state.type !== tt._in) {
+      if (
+        !tokenIsIdentifier(this.state.type) &&
+        this.state.type !== tt._in &&
+        this.state.type !== tt._const
+      ) {
         return undefined;
       }
 
@@ -345,20 +350,20 @@ export default (superClass: ClassWithMixin<typeof Parser, IJSXParserMixin>) =>
      *    this.tsParseModifiers({ modified: node, allowedModifiers: ["public"] });
      *    this.tsParseModifiers({ modified: node, allowedModifiers: ["abstract", "readonly"] });
      */
-    tsParseModifiers({
-      modified,
-      allowedModifiers,
-      disallowedModifiers,
-      stopOnStartOfClassStaticBlock,
-      errorTemplate = TSErrors.InvalidModifierOnTypeMember,
-    }: {
-      modified: ModifierBase;
-      allowedModifiers: readonly TsModifier[];
-      disallowedModifiers?: TsModifier[];
-      stopOnStartOfClassStaticBlock?: boolean;
-      // FIXME: make sure errorTemplate can receive `modifier`
-      errorTemplate?: any;
-    }): void {
+    tsParseModifiers<N extends ModifierBase>(
+      {
+        allowedModifiers,
+        disallowedModifiers,
+        stopOnStartOfClassStaticBlock,
+        errorTemplate = TSErrors.InvalidModifierOnTypeMember,
+      }: {
+        allowedModifiers: readonly TsModifier[];
+        disallowedModifiers?: TsModifier[];
+        stopOnStartOfClassStaticBlock?: boolean;
+        errorTemplate?: typeof TSErrors.InvalidModifierOnTypeMember;
+      },
+      modified: N,
+    ): void {
       const enforceOrder = (
         loc: Position,
         modifier: TsModifier,
@@ -644,37 +649,44 @@ export default (superClass: ClassWithMixin<typeof Parser, IJSXParserMixin>) =>
       return this.finishNode(node, "TSTypeQuery");
     }
 
-    tsParseInOutModifiers(node: N.TsTypeParameter) {
-      this.tsParseModifiers({
-        modified: node,
-        allowedModifiers: ["in", "out"],
-        disallowedModifiers: [
-          "public",
-          "private",
-          "protected",
-          "readonly",
-          "declare",
-          "abstract",
-          "override",
-        ],
-        errorTemplate: TSErrors.InvalidModifierOnTypeParameter,
-      });
-    }
-
-    // for better error recover
-    tsParseNoneModifiers(node: N.TsTypeParameter) {
-      this.tsParseModifiers({
-        modified: node,
-        allowedModifiers: [],
-        disallowedModifiers: ["in", "out"],
-        errorTemplate: TSErrors.InvalidModifierOnTypeParameterPositions,
-      });
-    }
+    tsParseInOutModifiers = this.tsParseModifiers.bind(this, {
+      allowedModifiers: ["in", "out"],
+      disallowedModifiers: [
+        "const",
+        "public",
+        "private",
+        "protected",
+        "readonly",
+        "declare",
+        "abstract",
+        "override",
+      ],
+      errorTemplate: TSErrors.InvalidModifierOnTypeParameter,
+    });
+
+    tsParseConstModifier = this.tsParseModifiers.bind(this, {
+      allowedModifiers: ["const"],
+      // for better error recover
+      disallowedModifiers: ["in", "out"],
+      errorTemplate: TSErrors.InvalidModifierOnTypeParameterPositions,
+    });
+
+    tsParseInOutConstModifiers = this.tsParseModifiers.bind(this, {
+      allowedModifiers: ["in", "out", "const"],
+      disallowedModifiers: [
+        "public",
+        "private",
+        "protected",
+        "readonly",
+        "declare",
+        "abstract",
+        "override",
+      ],
+      errorTemplate: TSErrors.InvalidModifierOnTypeParameter,
+    });
 
     tsParseTypeParameter(
-      parseModifiers: (
-        node: Undone<N.TsTypeParameter>,
-      ) => void = this.tsParseNoneModifiers.bind(this),
+      parseModifiers: (node: Undone<N.TsTypeParameter>) => void,
     ): N.TsTypeParameter {
       const node = this.startNode<N.TsTypeParameter>();
 
@@ -687,16 +699,14 @@ export default (superClass: ClassWithMixin<typeof Parser, IJSXParserMixin>) =>
     }
 
     tsTryParseTypeParameters(
-      parseModifiers?: ((node: N.TsTypeParameter) => void) | null,
+      parseModifiers: (node: N.TsTypeParameter) => void,
     ): N.TsTypeParameterDeclaration | undefined | null {
       if (this.match(tt.lt)) {
         return this.tsParseTypeParameters(parseModifiers);
       }
     }
 
-    tsParseTypeParameters(
-      parseModifiers?: ((node: N.TsTypeParameter) => void) | null,
-    ) {
+    tsParseTypeParameters(parseModifiers: (node: N.TsTypeParameter) => void) {
       const node = this.startNode<N.TsTypeParameterDeclaration>();
 
       if (this.match(tt.lt) || this.match(tt.jsxTagStart)) {
@@ -739,7 +749,9 @@ export default (superClass: ClassWithMixin<typeof Parser, IJSXParserMixin>) =>
         ? "returnType"
         : "typeAnnotation";
 
-      signature.typeParameters = this.tsTryParseTypeParameters();
+      signature.typeParameters = this.tsTryParseTypeParameters(
+        this.tsParseConstModifier,
+      );
       this.expect(tt.parenL);
       signature[paramsKey] = this.tsParseBindingListForSignature();
       if (returnTokenRequired) {
@@ -922,19 +934,21 @@ export default (superClass: ClassWithMixin<typeof Parser, IJSXParserMixin>) =>
         }
       }
 
-      this.tsParseModifiers({
-        modified: node,
-        allowedModifiers: ["readonly"],
-        disallowedModifiers: [
-          "declare",
-          "abstract",
-          "private",
-          "protected",
-          "public",
-          "static",
-          "override",
-        ],
-      });
+      this.tsParseModifiers(
+        {
+          allowedModifiers: ["readonly"],
+          disallowedModifiers: [
+            "declare",
+            "abstract",
+            "private",
+            "protected",
+            "public",
+            "static",
+            "override",
+          ],
+        },
+        node,
+      );
 
       const idx = this.tsTryParseIndexSignature(node);
       if (idx) {
@@ -1699,7 +1713,7 @@ export default (superClass: ClassWithMixin<typeof Parser, IJSXParserMixin>) =>
       }
 
       node.typeParameters = this.tsTryParseTypeParameters(
-        this.tsParseInOutModifiers.bind(this),
+        this.tsParseInOutConstModifiers,
       );
       if (this.eat(tt._extends)) {
         node.extends = this.tsParseHeritageClause("extends");
@@ -1718,7 +1732,7 @@ export default (superClass: ClassWithMixin<typeof Parser, IJSXParserMixin>) =>
 
       node.typeAnnotation = this.tsInType(() => {
         node.typeParameters = this.tsTryParseTypeParameters(
-          this.tsParseInOutModifiers.bind(this),
+          this.tsParseInOutModifiers,
         );
 
         this.expect(tt.eq);
@@ -2186,7 +2200,9 @@ export default (superClass: ClassWithMixin<typeof Parser, IJSXParserMixin>) =>
       const res: Undone<N.ArrowFunctionExpression> | undefined | null =
         this.tsTryParseAndCatch(() => {
           const node = this.startNodeAt<N.ArrowFunctionExpression>(startLoc);
-          node.typeParameters = this.tsParseTypeParameters();
+          node.typeParameters = this.tsParseTypeParameters(
+            this.tsParseConstModifier,
+          );
           // Don't use overloaded parseFunctionParams which would look for "<" again.
           super.parseFunctionParams(node);
           node.returnType = this.tsTryParseTypeOrTypePredicateAnnotation();
@@ -2260,16 +2276,18 @@ export default (superClass: ClassWithMixin<typeof Parser, IJSXParserMixin>) =>
       let override = false;
       if (allowModifiers !== undefined) {
         const modified: ModifierBase = {};
-        this.tsParseModifiers({
+        this.tsParseModifiers(
+          {
+            allowedModifiers: [
+              "public",
+              "private",
+              "protected",
+              "override",
+              "readonly",
+            ],
+          },
           modified,
-          allowedModifiers: [
-            "public",
-            "private",
-            "protected",
-            "override",
-            "readonly",
-          ],
-        });
+        );
         accessibility = modified.accessibility;
         override = modified.override;
         readonly = modified.readonly;
@@ -2852,13 +2870,15 @@ export default (superClass: ClassWithMixin<typeof Parser, IJSXParserMixin>) =>
         "readonly",
         "static",
       ] as const;
-      this.tsParseModifiers({
-        modified: member,
-        allowedModifiers: modifiers,
-        disallowedModifiers: ["in", "out"],
-        stopOnStartOfClassStaticBlock: true,
-        errorTemplate: TSErrors.InvalidModifierOnTypeParameterPositions,
-      });
+      this.tsParseModifiers(
+        {
+          allowedModifiers: modifiers,
+          disallowedModifiers: ["in", "out"],
+          stopOnStartOfClassStaticBlock: true,
+          errorTemplate: TSErrors.InvalidModifierOnTypeParameterPositions,
+        },
+        member,
+      );
 
       const callParseClassMemberWithIsStatic = () => {
         if (this.tsIsStartOfStaticBlocks()) {
@@ -3104,7 +3124,7 @@ export default (superClass: ClassWithMixin<typeof Parser, IJSXParserMixin>) =>
         (node as any).declare ? BIND_TS_AMBIENT : BIND_CLASS,
       );
       const typeParameters = this.tsTryParseTypeParameters(
-        this.tsParseInOutModifiers.bind(this),
+        this.tsParseInOutConstModifiers,
       );
       if (typeParameters) node.typeParameters = typeParameters;
     }
@@ -3189,7 +3209,9 @@ export default (superClass: ClassWithMixin<typeof Parser, IJSXParserMixin>) =>
       isConstructor: boolean,
       allowsDirectSuper: boolean,
     ): void {
-      const typeParameters = this.tsTryParseTypeParameters();
+      const typeParameters = this.tsTryParseTypeParameters(
+        this.tsParseConstModifier,
+      );
       if (typeParameters && isConstructor) {
         this.raise(TSErrors.ConstructorHasTypeParameters, {
           at: typeParameters,
@@ -3219,7 +3241,9 @@ export default (superClass: ClassWithMixin<typeof Parser, IJSXParserMixin>) =>
       isGenerator: boolean,
       isAsync: boolean,
     ): void {
-      const typeParameters = this.tsTryParseTypeParameters();
+      const typeParameters = this.tsTryParseTypeParameters(
+        this.tsParseConstModifier,
+      );
       if (typeParameters) method.typeParameters = typeParameters;
       super.pushClassPrivateMethod(classBody, method, isGenerator, isAsync);
     }
@@ -3256,7 +3280,9 @@ export default (superClass: ClassWithMixin<typeof Parser, IJSXParserMixin>) =>
       isAccessor: boolean,
       refExpressionErrors?: ExpressionErrors | null,
     ) {
-      const typeParameters = this.tsTryParseTypeParameters();
+      const typeParameters = this.tsTryParseTypeParameters(
+        this.tsParseConstModifier,
+      );
       if (typeParameters) prop.typeParameters = typeParameters;
 
       return super.parseObjPropValue(
@@ -3272,7 +3298,9 @@ export default (superClass: ClassWithMixin<typeof Parser, IJSXParserMixin>) =>
     }
 
     parseFunctionParams(node: N.Function, allowModifiers?: boolean): void {
-      const typeParameters = this.tsTryParseTypeParameters();
+      const typeParameters = this.tsTryParseTypeParameters(
+        this.tsParseConstModifier,
+      );
       if (typeParameters) node.typeParameters = typeParameters;
       super.parseFunctionParams(node, allowModifiers);
     }
@@ -3359,7 +3387,7 @@ export default (superClass: ClassWithMixin<typeof Parser, IJSXParserMixin>) =>
       let typeParameters: N.TsTypeParameterDeclaration | undefined | null;
       const arrow = this.tryParse(abort => {
         // This is similar to TypeScript's `tryParseParenthesizedArrowFunctionExpression`.
-        typeParameters = this.tsParseTypeParameters();
+        typeParameters = this.tsParseTypeParameters(this.tsParseConstModifier);
         const expr = super.parseMaybeAssign(
           refExpressionErrors,
           afterLeftParse,
diff --git a/packages/babel-parser/src/types.d.ts b/packages/babel-parser/src/types.d.ts
index 1164ac98f98d..f7bf3c1a5421 100644
--- a/packages/babel-parser/src/types.d.ts
+++ b/packages/babel-parser/src/types.d.ts
@@ -1053,6 +1053,7 @@ export interface TsTypeParameter extends NodeBase {
   name: string | Identifier;
   in?: boolean;
   out?: boolean;
+  const?: boolean;
   constraint?: TsType;
   default?: TsType;
 }
diff --git a/packages/babel-parser/test/fixtures/typescript/types/const-type-parameters-babel-7/input.ts b/packages/babel-parser/test/fixtures/typescript/types/const-type-parameters-babel-7/input.ts
new file mode 100644
index 000000000000..0e9aa76b39c1
--- /dev/null
+++ b/packages/babel-parser/test/fixtures/typescript/types/const-type-parameters-babel-7/input.ts
@@ -0,0 +1,24 @@
+function a<const T>() {}
+function b<const T extends U>() {}
+function c<T, const U>() {}
+declare function d<const T>();
+<const T>() => {};
+<const T extends U>() => {};
+
+class A<const T> {}
+class B<const T extends U> {}
+class C<T, const U> {}
+class D<in const T> {}
+class E<const in T> {}
+
+interface I<const T> {}
+interface J<const T extends U> {}
+interface K<T, const U> {}
+interface L<in const T> {}
+interface M<const in T> {}
+
+class _ {
+  method<const T>() {}
+  method<const T extends U>() {}
+  method<T, const U>() {}
+}
diff --git a/packages/babel-parser/test/fixtures/typescript/types/const-type-parameters-babel-7/options.json b/packages/babel-parser/test/fixtures/typescript/types/const-type-parameters-babel-7/options.json
new file mode 100644
index 000000000000..29a3f0e84167
--- /dev/null
+++ b/packages/babel-parser/test/fixtures/typescript/types/const-type-parameters-babel-7/options.json
@@ -0,0 +1,3 @@
+{
+  "BABEL_8_BREAKING": false
+}
diff --git a/packages/babel-parser/test/fixtures/typescript/types/const-type-parameters-babel-7/output.json b/packages/babel-parser/test/fixtures/typescript/types/const-type-parameters-babel-7/output.json
new file mode 100644
index 000000000000..5347298fe4a2
--- /dev/null
+++ b/packages/babel-parser/test/fixtures/typescript/types/const-type-parameters-babel-7/output.json
@@ -0,0 +1,640 @@
+{
+  "type": "File",
+  "start":0,"end":521,"loc":{"start":{"line":1,"column":0,"index":0},"end":{"line":24,"column":1,"index":521}},
+  "program": {
+    "type": "Program",
+    "start":0,"end":521,"loc":{"start":{"line":1,"column":0,"index":0},"end":{"line":24,"column":1,"index":521}},
+    "sourceType": "module",
+    "interpreter": null,
+    "body": [
+      {
+        "type": "FunctionDeclaration",
+        "start":0,"end":24,"loc":{"start":{"line":1,"column":0,"index":0},"end":{"line":1,"column":24,"index":24}},
+        "id": {
+          "type": "Identifier",
+          "start":9,"end":10,"loc":{"start":{"line":1,"column":9,"index":9},"end":{"line":1,"column":10,"index":10},"identifierName":"a"},
+          "name": "a"
+        },
+        "generator": false,
+        "async": false,
+        "typeParameters": {
+          "type": "TSTypeParameterDeclaration",
+          "start":10,"end":19,"loc":{"start":{"line":1,"column":10,"index":10},"end":{"line":1,"column":19,"index":19}},
+          "params": [
+            {
+              "type": "TSTypeParameter",
+              "start":11,"end":18,"loc":{"start":{"line":1,"column":11,"index":11},"end":{"line":1,"column":18,"index":18}},
+              "const": true,
+              "name": "T"
+            }
+          ]
+        },
+        "params": [],
+        "body": {
+          "type": "BlockStatement",
+          "start":22,"end":24,"loc":{"start":{"line":1,"column":22,"index":22},"end":{"line":1,"column":24,"index":24}},
+          "body": [],
+          "directives": []
+        }
+      },
+      {
+        "type": "FunctionDeclaration",
+        "start":25,"end":59,"loc":{"start":{"line":2,"column":0,"index":25},"end":{"line":2,"column":34,"index":59}},
+        "id": {
+          "type": "Identifier",
+          "start":34,"end":35,"loc":{"start":{"line":2,"column":9,"index":34},"end":{"line":2,"column":10,"index":35},"identifierName":"b"},
+          "name": "b"
+        },
+        "generator": false,
+        "async": false,
+        "typeParameters": {
+          "type": "TSTypeParameterDeclaration",
+          "start":35,"end":54,"loc":{"start":{"line":2,"column":10,"index":35},"end":{"line":2,"column":29,"index":54}},
+          "params": [
+            {
+              "type": "TSTypeParameter",
+              "start":36,"end":53,"loc":{"start":{"line":2,"column":11,"index":36},"end":{"line":2,"column":28,"index":53}},
+              "const": true,
+              "name": "T",
+              "constraint": {
+                "type": "TSTypeReference",
+                "start":52,"end":53,"loc":{"start":{"line":2,"column":27,"index":52},"end":{"line":2,"column":28,"index":53}},
+                "typeName": {
+                  "type": "Identifier",
+                  "start":52,"end":53,"loc":{"start":{"line":2,"column":27,"index":52},"end":{"line":2,"column":28,"index":53},"identifierName":"U"},
+                  "name": "U"
+                }
+              }
+            }
+          ]
+        },
+        "params": [],
+        "body": {
+          "type": "BlockStatement",
+          "start":57,"end":59,"loc":{"start":{"line":2,"column":32,"index":57},"end":{"line":2,"column":34,"index":59}},
+          "body": [],
+          "directives": []
+        }
+      },
+      {
+        "type": "FunctionDeclaration",
+        "start":60,"end":87,"loc":{"start":{"line":3,"column":0,"index":60},"end":{"line":3,"column":27,"index":87}},
+        "id": {
+          "type": "Identifier",
+          "start":69,"end":70,"loc":{"start":{"line":3,"column":9,"index":69},"end":{"line":3,"column":10,"index":70},"identifierName":"c"},
+          "name": "c"
+        },
+        "generator": false,
+        "async": false,
+        "typeParameters": {
+          "type": "TSTypeParameterDeclaration",
+          "start":70,"end":82,"loc":{"start":{"line":3,"column":10,"index":70},"end":{"line":3,"column":22,"index":82}},
+          "params": [
+            {
+              "type": "TSTypeParameter",
+              "start":71,"end":72,"loc":{"start":{"line":3,"column":11,"index":71},"end":{"line":3,"column":12,"index":72}},
+              "name": "T"
+            },
+            {
+              "type": "TSTypeParameter",
+              "start":74,"end":81,"loc":{"start":{"line":3,"column":14,"index":74},"end":{"line":3,"column":21,"index":81}},
+              "const": true,
+              "name": "U"
+            }
+          ]
+        },
+        "params": [],
+        "body": {
+          "type": "BlockStatement",
+          "start":85,"end":87,"loc":{"start":{"line":3,"column":25,"index":85},"end":{"line":3,"column":27,"index":87}},
+          "body": [],
+          "directives": []
+        }
+      },
+      {
+        "type": "TSDeclareFunction",
+        "start":88,"end":118,"loc":{"start":{"line":4,"column":0,"index":88},"end":{"line":4,"column":30,"index":118}},
+        "declare": true,
+        "id": {
+          "type": "Identifier",
+          "start":105,"end":106,"loc":{"start":{"line":4,"column":17,"index":105},"end":{"line":4,"column":18,"index":106},"identifierName":"d"},
+          "name": "d"
+        },
+        "generator": false,
+        "async": false,
+        "typeParameters": {
+          "type": "TSTypeParameterDeclaration",
+          "start":106,"end":115,"loc":{"start":{"line":4,"column":18,"index":106},"end":{"line":4,"column":27,"index":115}},
+          "params": [
+            {
+              "type": "TSTypeParameter",
+              "start":107,"end":114,"loc":{"start":{"line":4,"column":19,"index":107},"end":{"line":4,"column":26,"index":114}},
+              "const": true,
+              "name": "T"
+            }
+          ]
+        },
+        "params": []
+      },
+      {
+        "type": "ExpressionStatement",
+        "start":119,"end":137,"loc":{"start":{"line":5,"column":0,"index":119},"end":{"line":5,"column":18,"index":137}},
+        "expression": {
+          "type": "ArrowFunctionExpression",
+          "start":119,"end":136,"loc":{"start":{"line":5,"column":0,"index":119},"end":{"line":5,"column":17,"index":136}},
+          "id": null,
+          "generator": false,
+          "async": false,
+          "params": [],
+          "body": {
+            "type": "BlockStatement",
+            "start":134,"end":136,"loc":{"start":{"line":5,"column":15,"index":134},"end":{"line":5,"column":17,"index":136}},
+            "body": [],
+            "directives": []
+          },
+          "typeParameters": {
+            "type": "TSTypeParameterDeclaration",
+            "start":119,"end":128,"loc":{"start":{"line":5,"column":0,"index":119},"end":{"line":5,"column":9,"index":128}},
+            "params": [
+              {
+                "type": "TSTypeParameter",
+                "start":120,"end":127,"loc":{"start":{"line":5,"column":1,"index":120},"end":{"line":5,"column":8,"index":127}},
+                "const": true,
+                "name": "T"
+              }
+            ]
+          }
+        }
+      },
+      {
+        "type": "ExpressionStatement",
+        "start":138,"end":166,"loc":{"start":{"line":6,"column":0,"index":138},"end":{"line":6,"column":28,"index":166}},
+        "expression": {
+          "type": "ArrowFunctionExpression",
+          "start":138,"end":165,"loc":{"start":{"line":6,"column":0,"index":138},"end":{"line":6,"column":27,"index":165}},
+          "id": null,
+          "generator": false,
+          "async": false,
+          "params": [],
+          "body": {
+            "type": "BlockStatement",
+            "start":163,"end":165,"loc":{"start":{"line":6,"column":25,"index":163},"end":{"line":6,"column":27,"index":165}},
+            "body": [],
+            "directives": []
+          },
+          "typeParameters": {
+            "type": "TSTypeParameterDeclaration",
+            "start":138,"end":157,"loc":{"start":{"line":6,"column":0,"index":138},"end":{"line":6,"column":19,"index":157}},
+            "params": [
+              {
+                "type": "TSTypeParameter",
+                "start":139,"end":156,"loc":{"start":{"line":6,"column":1,"index":139},"end":{"line":6,"column":18,"index":156}},
+                "const": true,
+                "name": "T",
+                "constraint": {
+                  "type": "TSTypeReference",
+                  "start":155,"end":156,"loc":{"start":{"line":6,"column":17,"index":155},"end":{"line":6,"column":18,"index":156}},
+                  "typeName": {
+                    "type": "Identifier",
+                    "start":155,"end":156,"loc":{"start":{"line":6,"column":17,"index":155},"end":{"line":6,"column":18,"index":156},"identifierName":"U"},
+                    "name": "U"
+                  }
+                }
+              }
+            ]
+          }
+        }
+      },
+      {
+        "type": "ClassDeclaration",
+        "start":168,"end":187,"loc":{"start":{"line":8,"column":0,"index":168},"end":{"line":8,"column":19,"index":187}},
+        "id": {
+          "type": "Identifier",
+          "start":174,"end":175,"loc":{"start":{"line":8,"column":6,"index":174},"end":{"line":8,"column":7,"index":175},"identifierName":"A"},
+          "name": "A"
+        },
+        "typeParameters": {
+          "type": "TSTypeParameterDeclaration",
+          "start":175,"end":184,"loc":{"start":{"line":8,"column":7,"index":175},"end":{"line":8,"column":16,"index":184}},
+          "params": [
+            {
+              "type": "TSTypeParameter",
+              "start":176,"end":183,"loc":{"start":{"line":8,"column":8,"index":176},"end":{"line":8,"column":15,"index":183}},
+              "const": true,
+              "name": "T"
+            }
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+          "body": [
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+              "static": false,
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+                    "const": true,
+                    "name": {
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+              },
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+              "generator": false,
+              "async": false,
+              "params": [],
+              "body": {
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+}
diff --git a/packages/babel-types/src/ast-types/generated/index.ts b/packages/babel-types/src/ast-types/generated/index.ts
index d09439230eac..2e786a3d9219 100644
--- a/packages/babel-types/src/ast-types/generated/index.ts
+++ b/packages/babel-types/src/ast-types/generated/index.ts
@@ -2074,6 +2074,7 @@ export interface TSTypeParameter extends BaseNode {
   constraint?: TSType | null;
   default?: TSType | null;
   name: string;
+  const?: boolean | null;
   in?: boolean | null;
   out?: boolean | null;
 }
diff --git a/packages/babel-types/src/definitions/typescript.ts b/packages/babel-types/src/definitions/typescript.ts
index 9475c9dd6675..1cf08c5a7eda 100644
--- a/packages/babel-types/src/definitions/typescript.ts
+++ b/packages/babel-types/src/definitions/typescript.ts
@@ -632,6 +632,10 @@ defineType("TSTypeParameter", {
       validate: assertValueType("boolean"),
       optional: true,
     },
+    const: {
+      validate: assertValueType("boolean"),
+      optional: true,
+    },
     constraint: {
       validate: assertNodeType("TSType"),
       optional: true,