From 36e99ab94054673f135539615b70e2285fdf007d Mon Sep 17 00:00:00 2001
From: fisker <lionkay@gmail.com>
Date: Mon, 14 Jun 2021 00:12:06 +0800
Subject: [PATCH] Test `d` flag in regexp literal

---
 .../js/regex/__snapshots__/jsfmt.spec.js.snap | 35 +++++++++++++++++++
 tests/format/js/regex/d-flag.js               |  1 +
 tests/format/js/regex/jsfmt.spec.js           |  8 ++++-
 3 files changed, 43 insertions(+), 1 deletion(-)
 create mode 100644 tests/format/js/regex/d-flag.js

diff --git a/tests/format/js/regex/__snapshots__/jsfmt.spec.js.snap b/tests/format/js/regex/__snapshots__/jsfmt.spec.js.snap
index 64d96cf7de94..e1e9e91b3327 100644
--- a/tests/format/js/regex/__snapshots__/jsfmt.spec.js.snap
+++ b/tests/format/js/regex/__snapshots__/jsfmt.spec.js.snap
@@ -1,5 +1,40 @@
 // Jest Snapshot v1, https://goo.gl/fbAQLP
 
+exports[`d-flag.js [espree] format 1`] = `
+"Invalid regular expression flag (1:2)
+> 1 | /./d;
+    |  ^
+  2 |"
+`;
+
+exports[`d-flag.js [flow] format 1`] = `
+"Invalid flags supplied to RegExp constructor 'd' (1:5)
+> 1 | /./d;
+    |     ^
+  2 |"
+`;
+
+exports[`d-flag.js [meriyah] format 1`] = `
+"[1:3]: Unexpected regular expression flag (1:3)
+> 1 | /./d;
+    |   ^
+  2 |"
+`;
+
+exports[`d-flag.js format 1`] = `
+====================================options=====================================
+parsers: ["babel", "flow", "typescript"]
+printWidth: 80
+                                                                                | printWidth
+=====================================input======================================
+/./d;
+
+=====================================output=====================================
+/./d;
+
+================================================================================
+`;
+
 exports[`test.js format 1`] = `
 ====================================options=====================================
 parsers: ["babel", "flow", "typescript"]
diff --git a/tests/format/js/regex/d-flag.js b/tests/format/js/regex/d-flag.js
new file mode 100644
index 000000000000..566fb6f0e726
--- /dev/null
+++ b/tests/format/js/regex/d-flag.js
@@ -0,0 +1 @@
+/./d;
diff --git a/tests/format/js/regex/jsfmt.spec.js b/tests/format/js/regex/jsfmt.spec.js
index eb85eda6bd02..fe800ee65cea 100644
--- a/tests/format/js/regex/jsfmt.spec.js
+++ b/tests/format/js/regex/jsfmt.spec.js
@@ -1 +1,7 @@
-run_spec(__dirname, ["babel", "flow", "typescript"]);
+run_spec(__dirname, ["babel", "flow", "typescript"], {
+  errors: {
+    flow: ["d-flag.js"],
+    espree: ["d-flag.js"],
+    meriyah: ["d-flag.js"],
+  },
+});