[babel-types] Update matchesPattern to account for this (#13264)

babel · May 5, 2021 · 187094b · 187094b
1 parent 8873d0c
commit 187094b
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Showing 2 changed files with 16 additions and 1 deletion.
diff --git a/packages/babel-types/src/validators/matchesPattern.ts b/packages/babel-types/src/validators/matchesPattern.ts
@@ -1,4 +1,9 @@
-import { isIdentifier, isMemberExpression, isStringLiteral } from "./generated";
+import {
+  isIdentifier,
+  isMemberExpression,
+  isStringLiteral,
+  isThisExpression,
+} from "./generated";
 import type * as t from "..";
 
 /**
@@ -35,6 +40,8 @@ export default function matchesPattern(
       value = node.name;
     } else if (isStringLiteral(node)) {
       value = node.value;
+    } else if (isThisExpression(node)) {
+      value = "this";
     } else {
       return false;
     }

diff --git a/packages/babel-types/test/misc.js b/packages/babel-types/test/misc.js
@@ -40,5 +40,13 @@ describe("misc helpers", function () {
       expect(t.matchesPattern(ast, "b.c.d", true)).toBe(false);
       expect(t.matchesPattern(ast, "a.b.c.d.e", true)).toBe(false);
     });
+
+    it("matches this expressions", function () {
+      const ast = parseCode("this.a.b.c.d").expression;
+      expect(t.matchesPattern(ast, "this.a.b.c.d")).toBeTruthy();
+      expect(t.matchesPattern(ast, "this.a.b.c")).toBe(false);
+      expect(t.matchesPattern(ast, "this.b.c.d")).toBe(false);
+      expect(t.matchesPattern(ast, "this.a.b.c.d.e")).toBe(false);
+    });
   });
 });