Test babel/babel#13049

tests/misc/errors/js/for-of/__snapshots__/jsfmt.spec.js.snap

@@ -0,0 +1,109 @@
+// Jest Snapshot v1, https://goo.gl/fbAQLP
+
+exports[`snippet: #0 [babel] format 1`] = `
+"Unexpected reserved word 'let' (1:6)
+> 1 | for (let.foo of []);
+    |      ^"
+`;
+
+exports[`snippet: #0 [babel-flow] format 1`] = `
+"Unexpected reserved word 'let' (1:6)
+> 1 | for (let.foo of []);
+    |      ^"
+`;
+
+exports[`snippet: #0 [babel-ts] format 1`] = `
+"The left-hand side of a for-of loop may not start with 'let'. (1:6)
+> 1 | for (let.foo of []);
+    |      ^"
+`;
+
+exports[`snippet: #0 [flow] format 1`] = `
+"Unexpected token \`.\`, expected an identifier (1:9)
+> 1 | for (let.foo of []);
+    |         ^"
+`;
+
+exports[`snippet: #0 [meriyah] format 1`] = `
+"[1:9]: Identifier \\"let\\" disallowed as left-hand side expression in strict mode (1:9)
+> 1 | for (let.foo of []);
+    |         ^"
+`;
+
+exports[`snippet: #0 [typescript] format 1`] = `
+"Variable declaration expected. (1:9)
+> 1 | for (let.foo of []);
+    |         ^"
+`;
+
+exports[`snippet: #1 [babel] format 1`] = `
+"Unexpected reserved word 'let' (1:6)
+> 1 | for (let().bar of []);
+    |      ^"
+`;
+
+exports[`snippet: #1 [babel-flow] format 1`] = `
+"Unexpected reserved word 'let' (1:6)
+> 1 | for (let().bar of []);
+    |      ^"
+`;
+
+exports[`snippet: #1 [babel-ts] format 1`] = `
+"The left-hand side of a for-of loop may not start with 'let'. (1:6)
+> 1 | for (let().bar of []);
+    |      ^"
+`;
+
+exports[`snippet: #1 [flow] format 1`] = `
+"Unexpected token \`(\`, expected an identifier (1:9)
+> 1 | for (let().bar of []);
+    |         ^"
+`;
+
+exports[`snippet: #1 [meriyah] format 1`] = `
+"[1:9]: Identifier \\"let\\" disallowed as left-hand side expression in strict mode (1:9)
+> 1 | for (let().bar of []);
+    |         ^"
+`;
+
+exports[`snippet: #1 [typescript] format 1`] = `
+"Variable declaration expected. (1:9)
+> 1 | for (let().bar of []);
+    |         ^"
+`;
+
+exports[`snippet: #2 [babel] format 1`] = `
+"Unexpected reserved word 'let' (1:6)
+> 1 | for (let\`\`.bar of []);
+    |      ^"
+`;
+
+exports[`snippet: #2 [babel-flow] format 1`] = `
+"Unexpected reserved word 'let' (1:6)
+> 1 | for (let\`\`.bar of []);
+    |      ^"
+`;
+
+exports[`snippet: #2 [babel-ts] format 1`] = `
+"The left-hand side of a for-of loop may not start with 'let'. (1:6)
+> 1 | for (let\`\`.bar of []);
+    |      ^"
+`;
+
+exports[`snippet: #2 [flow] format 1`] = `
+"Unexpected template literal part, expected an identifier (1:9)
+> 1 | for (let\`\`.bar of []);
+    |         ^^"
+`;
+
+exports[`snippet: #2 [meriyah] format 1`] = `
+"[1:10]: Identifier \\"let\\" disallowed as left-hand side expression in strict mode (1:10)
+> 1 | for (let\`\`.bar of []);
+    |          ^"
+`;
+
+exports[`snippet: #2 [typescript] format 1`] = `
+"Variable declaration expected. (1:9)
+> 1 | for (let\`\`.bar of []);
+    |         ^"
+`;

tests/misc/errors/js/for-of/jsfmt.spec.js

@@ -0,0 +1,20 @@
+run_spec(
+  {
+    dirname: __dirname,
+    snippets: [
+      "for (let.foo of []);",
+      "for (let().bar of []);",
+      "for (let``.bar of []);",
+    ],
+  },
+  [
+    "babel",
+    // Espree didn't throw https://github.com/acornjs/acorn/issues/1009
+    // "espree",
+    "meriyah",
+    "flow",
+    "typescript",
+    "babel-flow",
+    "babel-ts",
+  ]
+);