Fix parsing of imports with module string name in flow plugin (#12224)

packages/babel-parser/src/plugins/flow.js

@@ -2496,13 +2496,15 @@ export default (superClass: Class<Parser>): Class<Parser> =>
     parseImportSpecifier(node: N.ImportDeclaration): void {
       const specifier = this.startNode();
       const firstIdentLoc = this.state.start;
-      const firstIdent = this.parseIdentifier(true);
+      const firstIdent = this.parseModuleExportName();
 
       let specifierTypeKind = null;
-      if (firstIdent.name === "type") {
+      if (firstIdent.type === "Identifier") {
-        specifierTypeKind = "type";
+        if (firstIdent.name === "type") {
-      } else if (firstIdent.name === "typeof") {
+          specifierTypeKind = "type";
-        specifierTypeKind = "typeof";
+        } else if (firstIdent.name === "typeof") {
+          specifierTypeKind = "typeof";
+        }
       }
 
       let isBinding = false;
@@ -2537,6 +2539,13 @@ export default (superClass: Class<Parser>): Class<Parser> =>
           specifier.local = specifier.imported.__clone();
         }
       } else {
+        if (firstIdent.type === "StringLiteral") {
+          throw this.raise(
+            specifier.start,
+            Errors.ImportBindingIsString,
+            firstIdent.value,
+          );
+        }
         isBinding = true;
         specifier.imported = firstIdent;
         specifier.importKind = null;

packages/babel-parser/test/fixtures/flow/module-string-names/default-import/input.js

@@ -0,0 +1 @@
+import {"default" as quotation} from "Confucius";

packages/babel-parser/test/fixtures/flow/module-string-names/default-import/output.json

@@ -0,0 +1,48 @@
+{
+  "type": "File",
+  "start":0,"end":49,"loc":{"start":{"line":1,"column":0},"end":{"line":1,"column":49}},
+  "program": {
+    "type": "Program",
+    "start":0,"end":49,"loc":{"start":{"line":1,"column":0},"end":{"line":1,"column":49}},
+    "sourceType": "module",
+    "interpreter": null,
+    "body": [
+      {
+        "type": "ImportDeclaration",
+        "start":0,"end":49,"loc":{"start":{"line":1,"column":0},"end":{"line":1,"column":49}},
+        "specifiers": [
+          {
+            "type": "ImportSpecifier",
+            "start":8,"end":30,"loc":{"start":{"line":1,"column":8},"end":{"line":1,"column":30}},
+            "imported": {
+              "type": "StringLiteral",
+              "start":8,"end":17,"loc":{"start":{"line":1,"column":8},"end":{"line":1,"column":17}},
+              "extra": {
+                "rawValue": "default",
+                "raw": "\"default\""
+              },
+              "value": "default"
+            },
+            "importKind": null,
+            "local": {
+              "type": "Identifier",
+              "start":21,"end":30,"loc":{"start":{"line":1,"column":21},"end":{"line":1,"column":30},"identifierName":"quotation"},
+              "name": "quotation"
+            }
+          }
+        ],
+        "importKind": "value",
+        "source": {
+          "type": "StringLiteral",
+          "start":37,"end":48,"loc":{"start":{"line":1,"column":37},"end":{"line":1,"column":48}},
+          "extra": {
+            "rawValue": "Confucius",
+            "raw": "\"Confucius\""
+          },
+          "value": "Confucius"
+        }
+      }
+    ],
+    "directives": []
+  }
+}

packages/babel-parser/test/fixtures/flow/module-string-names/import-local-is-string/input.js

@@ -0,0 +1 @@
+import { "foo" } from "baz";

packages/babel-parser/test/fixtures/flow/module-string-names/import-local-is-string/options.json

@@ -0,0 +1,8 @@
+{
+  "sourceType": "module",
+  "plugins": [
+    "moduleStringNames",
+    "flow"
+  ],
+  "throws": "A string literal cannot be used as an imported binding.\n- Did you mean `import { \"foo\" as foo }`? (1:9)"
+}

packages/babel-parser/test/fixtures/flow/module-string-names/mixed/input.js

@@ -0,0 +1,2 @@
+import { "foo" as bar, "default" as qux } from "module-a";
+export * as "foo", { default as "quux" } from "module-b";

packages/babel-parser/test/fixtures/flow/module-string-names/mixed/output.json

@@ -0,0 +1,115 @@
+{
+  "type": "File",
+  "start":0,"end":116,"loc":{"start":{"line":1,"column":0},"end":{"line":2,"column":57}},
+  "program": {
+    "type": "Program",
+    "start":0,"end":116,"loc":{"start":{"line":1,"column":0},"end":{"line":2,"column":57}},
+    "sourceType": "module",
+    "interpreter": null,
+    "body": [
+      {
+        "type": "ImportDeclaration",
+        "start":0,"end":58,"loc":{"start":{"line":1,"column":0},"end":{"line":1,"column":58}},
+        "specifiers": [
+          {
+            "type": "ImportSpecifier",
+            "start":9,"end":21,"loc":{"start":{"line":1,"column":9},"end":{"line":1,"column":21}},
+            "imported": {
+              "type": "StringLiteral",
+              "start":9,"end":14,"loc":{"start":{"line":1,"column":9},"end":{"line":1,"column":14}},
+              "extra": {
+                "rawValue": "foo",
+                "raw": "\"foo\""
+              },
+              "value": "foo"
+            },
+            "importKind": null,
+            "local": {
+              "type": "Identifier",
+              "start":18,"end":21,"loc":{"start":{"line":1,"column":18},"end":{"line":1,"column":21},"identifierName":"bar"},
+              "name": "bar"
+            }
+          },
+          {
+            "type": "ImportSpecifier",
+            "start":23,"end":39,"loc":{"start":{"line":1,"column":23},"end":{"line":1,"column":39}},
+            "imported": {
+              "type": "StringLiteral",
+              "start":23,"end":32,"loc":{"start":{"line":1,"column":23},"end":{"line":1,"column":32}},
+              "extra": {
+                "rawValue": "default",
+                "raw": "\"default\""
+              },
+              "value": "default"
+            },
+            "importKind": null,
+            "local": {
+              "type": "Identifier",
+              "start":36,"end":39,"loc":{"start":{"line":1,"column":36},"end":{"line":1,"column":39},"identifierName":"qux"},
+              "name": "qux"
+            }
+          }
+        ],
+        "importKind": "value",
+        "source": {
+          "type": "StringLiteral",
+          "start":47,"end":57,"loc":{"start":{"line":1,"column":47},"end":{"line":1,"column":57}},
+          "extra": {
+            "rawValue": "module-a",
+            "raw": "\"module-a\""
+          },
+          "value": "module-a"
+        }
+      },
+      {
+        "type": "ExportNamedDeclaration",
+        "start":59,"end":116,"loc":{"start":{"line":2,"column":0},"end":{"line":2,"column":57}},
+        "specifiers": [
+          {
+            "type": "ExportNamespaceSpecifier",
+            "start":66,"end":76,"loc":{"start":{"line":2,"column":7},"end":{"line":2,"column":17}},
+            "exported": {
+              "type": "StringLiteral",
+              "start":71,"end":76,"loc":{"start":{"line":2,"column":12},"end":{"line":2,"column":17}},
+              "extra": {
+                "rawValue": "foo",
+                "raw": "\"foo\""
+              },
+              "value": "foo"
+            }
+          },
+          {
+            "type": "ExportSpecifier",
+            "start":80,"end":97,"loc":{"start":{"line":2,"column":21},"end":{"line":2,"column":38}},
+            "local": {
+              "type": "Identifier",
+              "start":80,"end":87,"loc":{"start":{"line":2,"column":21},"end":{"line":2,"column":28},"identifierName":"default"},
+              "name": "default"
+            },
+            "exported": {
+              "type": "StringLiteral",
+              "start":91,"end":97,"loc":{"start":{"line":2,"column":32},"end":{"line":2,"column":38}},
+              "extra": {
+                "rawValue": "quux",
+                "raw": "\"quux\""
+              },
+              "value": "quux"
+            }
+          }
+        ],
+        "source": {
+          "type": "StringLiteral",
+          "start":105,"end":115,"loc":{"start":{"line":2,"column":46},"end":{"line":2,"column":56}},
+          "extra": {
+            "rawValue": "module-b",
+            "raw": "\"module-b\""
+          },
+          "value": "module-b"
+        },
+        "declaration": null,
+        "exportKind": "value"
+      }
+    ],
+    "directives": []
+  }
+}

packages/babel-parser/test/fixtures/flow/module-string-names/named-imports/input.js

@@ -0,0 +1 @@
+import {"學而時習之，不亦說乎？" as quotation} from "Confucius";

packages/babel-parser/test/fixtures/flow/module-string-names/named-imports/output.json

@@ -0,0 +1,48 @@
+{
+  "type": "File",
+  "start":0,"end":53,"loc":{"start":{"line":1,"column":0},"end":{"line":1,"column":53}},
+  "program": {
+    "type": "Program",
+    "start":0,"end":53,"loc":{"start":{"line":1,"column":0},"end":{"line":1,"column":53}},
+    "sourceType": "module",
+    "interpreter": null,
+    "body": [
+      {
+        "type": "ImportDeclaration",
+        "start":0,"end":53,"loc":{"start":{"line":1,"column":0},"end":{"line":1,"column":53}},
+        "specifiers": [
+          {
+            "type": "ImportSpecifier",
+            "start":8,"end":34,"loc":{"start":{"line":1,"column":8},"end":{"line":1,"column":34}},
+            "imported": {
+              "type": "StringLiteral",
+              "start":8,"end":21,"loc":{"start":{"line":1,"column":8},"end":{"line":1,"column":21}},
+              "extra": {
+                "rawValue": "學而時習之，不亦說乎？",
+                "raw": "\"學而時習之，不亦說乎？\""
+              },
+              "value": "學而時習之，不亦說乎？"
+            },
+            "importKind": null,
+            "local": {
+              "type": "Identifier",
+              "start":25,"end":34,"loc":{"start":{"line":1,"column":25},"end":{"line":1,"column":34},"identifierName":"quotation"},
+              "name": "quotation"
+            }
+          }
+        ],
+        "importKind": "value",
+        "source": {
+          "type": "StringLiteral",
+          "start":41,"end":52,"loc":{"start":{"line":1,"column":41},"end":{"line":1,"column":52}},
+          "extra": {
+            "rawValue": "Confucius",
+            "raw": "\"Confucius\""
+          },
+          "value": "Confucius"
+        }
+      }
+    ],
+    "directives": []
+  }
+}

packages/babel-parser/test/fixtures/flow/module-string-names/options.json

@@ -0,0 +1,4 @@
+{
+  "sourceType": "module",
+  "plugins": ["flow", "moduleStringNames"]
+}