feat(instrumenter): add support for .mjs and .cjs file formats (#…

…2391)
stryker-mutator · Aug 18, 2020 · 5ba4c5c · 5ba4c5c
1 parent 6041699
commit 5ba4c5c
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Showing 5 changed files with 300 additions and 0 deletions.
diff --git a/packages/instrumenter/src/parsers/index.ts b/packages/instrumenter/src/parsers/index.ts
@@ -31,6 +31,8 @@ function getFormat(fileName: string, override: AstFormat | undefined): AstFormat
     const ext = path.extname(fileName).toLowerCase();
     switch (ext) {
       case '.js':
+      case '.mjs':
+      case '.cjs':
         return AstFormat.JS;
       case '.ts':
       case '.tsx':

diff --git a/packages/instrumenter/test/integration/parsers.it.spec.js.snap b/packages/instrumenter/test/integration/parsers.it.spec.js.snap
@@ -8506,6 +8506,292 @@ export class AppComponent {
 }
 `;
 
+exports[`parsers integration should allow to parse a cjs file 1`] = `
+Object {
+  "format": "js",
+  "originFileName": "app.cjs",
+  "rawContent": "module.exports = class App {}",
+  "root": Node {
+    "comments": Array [],
+    "end": 29,
+    "errors": Array [],
+    "loc": SourceLocation {
+      "end": Position {
+        "column": 29,
+        "line": 1,
+      },
+      "start": Position {
+        "column": 0,
+        "line": 1,
+      },
+    },
+    "program": Node {
+      "body": Array [
+        Node {
+          "end": 29,
+          "expression": Node {
+            "end": 29,
+            "left": Node {
+              "computed": false,
+              "end": 14,
+              "loc": SourceLocation {
+                "end": Position {
+                  "column": 14,
+                  "line": 1,
+                },
+                "start": Position {
+                  "column": 0,
+                  "line": 1,
+                },
+              },
+              "object": Node {
+                "end": 6,
+                "loc": SourceLocation {
+                  "end": Position {
+                    "column": 6,
+                    "line": 1,
+                  },
+                  "identifierName": "module",
+                  "start": Position {
+                    "column": 0,
+                    "line": 1,
+                  },
+                },
+                "name": "module",
+                "start": 0,
+                "type": "Identifier",
+              },
+              "property": Node {
+                "end": 14,
+                "loc": SourceLocation {
+                  "end": Position {
+                    "column": 14,
+                    "line": 1,
+                  },
+                  "identifierName": "exports",
+                  "start": Position {
+                    "column": 7,
+                    "line": 1,
+                  },
+                },
+                "name": "exports",
+                "start": 7,
+                "type": "Identifier",
+              },
+              "start": 0,
+              "type": "MemberExpression",
+            },
+            "loc": SourceLocation {
+              "end": Position {
+                "column": 29,
+                "line": 1,
+              },
+              "start": Position {
+                "column": 0,
+                "line": 1,
+              },
+            },
+            "operator": "=",
+            "right": Node {
+              "body": Node {
+                "body": Array [],
+                "end": 29,
+                "loc": SourceLocation {
+                  "end": Position {
+                    "column": 29,
+                    "line": 1,
+                  },
+                  "start": Position {
+                    "column": 27,
+                    "line": 1,
+                  },
+                },
+                "start": 27,
+                "type": "ClassBody",
+              },
+              "end": 29,
+              "id": Node {
+                "end": 26,
+                "loc": SourceLocation {
+                  "end": Position {
+                    "column": 26,
+                    "line": 1,
+                  },
+                  "identifierName": "App",
+                  "start": Position {
+                    "column": 23,
+                    "line": 1,
+                  },
+                },
+                "name": "App",
+                "start": 23,
+                "type": "Identifier",
+              },
+              "loc": SourceLocation {
+                "end": Position {
+                  "column": 29,
+                  "line": 1,
+                },
+                "start": Position {
+                  "column": 17,
+                  "line": 1,
+                },
+              },
+              "start": 17,
+              "superClass": null,
+              "type": "ClassExpression",
+            },
+            "start": 0,
+            "type": "AssignmentExpression",
+          },
+          "loc": SourceLocation {
+            "end": Position {
+              "column": 29,
+              "line": 1,
+            },
+            "start": Position {
+              "column": 0,
+              "line": 1,
+            },
+          },
+          "start": 0,
+          "type": "ExpressionStatement",
+        },
+      ],
+      "directives": Array [],
+      "end": 29,
+      "interpreter": null,
+      "loc": SourceLocation {
+        "end": Position {
+          "column": 29,
+          "line": 1,
+        },
+        "start": Position {
+          "column": 0,
+          "line": 1,
+        },
+      },
+      "sourceType": "module",
+      "start": 0,
+      "type": "Program",
+    },
+    "start": 0,
+    "type": "File",
+  },
+}
+`;
+
+exports[`parsers integration should allow to parse a mjs file 1`] = `
+Object {
+  "format": "js",
+  "originFileName": "app.mjs",
+  "rawContent": "export class App {}",
+  "root": Node {
+    "comments": Array [],
+    "end": 19,
+    "errors": Array [],
+    "loc": SourceLocation {
+      "end": Position {
+        "column": 19,
+        "line": 1,
+      },
+      "start": Position {
+        "column": 0,
+        "line": 1,
+      },
+    },
+    "program": Node {
+      "body": Array [
+        Node {
+          "declaration": Node {
+            "body": Node {
+              "body": Array [],
+              "end": 19,
+              "loc": SourceLocation {
+                "end": Position {
+                  "column": 19,
+                  "line": 1,
+                },
+                "start": Position {
+                  "column": 17,
+                  "line": 1,
+                },
+              },
+              "start": 17,
+              "type": "ClassBody",
+            },
+            "end": 19,
+            "id": Node {
+              "end": 16,
+              "loc": SourceLocation {
+                "end": Position {
+                  "column": 16,
+                  "line": 1,
+                },
+                "identifierName": "App",
+                "start": Position {
+                  "column": 13,
+                  "line": 1,
+                },
+              },
+              "name": "App",
+              "start": 13,
+              "type": "Identifier",
+            },
+            "loc": SourceLocation {
+              "end": Position {
+                "column": 19,
+                "line": 1,
+              },
+              "start": Position {
+                "column": 7,
+                "line": 1,
+              },
+            },
+            "start": 7,
+            "superClass": null,
+            "type": "ClassDeclaration",
+          },
+          "end": 19,
+          "loc": SourceLocation {
+            "end": Position {
+              "column": 19,
+              "line": 1,
+            },
+            "start": Position {
+              "column": 0,
+              "line": 1,
+            },
+          },
+          "source": null,
+          "specifiers": Array [],
+          "start": 0,
+          "type": "ExportNamedDeclaration",
+        },
+      ],
+      "directives": Array [],
+      "end": 19,
+      "interpreter": null,
+      "loc": SourceLocation {
+        "end": Position {
+          "column": 19,
+          "line": 1,
+        },
+        "start": Position {
+          "column": 0,
+          "line": 1,
+        },
+      },
+      "sourceType": "module",
+      "start": 0,
+      "type": "Program",
+    },
+    "start": 0,
+    "type": "File",
+  },
+}
+`;
+
 exports[`parsers integration should allow to parse a react file with custom babelrc file 1`] = `
 Object {
   "format": "js",

diff --git a/packages/instrumenter/test/integration/parsers.it.spec.ts b/packages/instrumenter/test/integration/parsers.it.spec.ts
@@ -56,6 +56,16 @@ describe('parsers integration', () => {
     expect(actual).to.matchSnapshot();
   });
 
+  it('should allow to parse a mjs file', async () => {
+    const actual = await actAssertJS('app.mjs');
+    expect(actual).to.matchSnapshot();
+  });
+
+  it('should allow to parse a cjs file', async () => {
+    const actual = await actAssertJS('app.cjs');
+    expect(actual).to.matchSnapshot();
+  });
+
   async function act(testResourceFileName: string, options: ParserOptions) {
     const fileName = resolveTestResource(testResourceFileName);
     const input = await fs.readFile(fileName, 'utf8');

diff --git a/packages/instrumenter/testResources/parser/app.cjs b/packages/instrumenter/testResources/parser/app.cjs
@@ -0,0 +1 @@
+module.exports = class App {}
diff --git a/packages/instrumenter/testResources/parser/app.mjs b/packages/instrumenter/testResources/parser/app.mjs
@@ -0,0 +1 @@
+export class App {}