1 files changed, 55 insertions, 0 deletions
diff --git a/devtools/shared/webconsole/messages.js b/devtools/shared/webconsole/messages.js
new file mode 100644
index 0000000000..a0ec73b39e
--- /dev/null
+++ b/devtools/shared/webconsole/messages.js
@@ -0,0 +1,55 @@
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+"use strict";
+
+function getArrayTypeNames() {
+  return [
+    "Array",
+    "Int8Array",
+    "Uint8Array",
+    "Int16Array",
+    "Uint16Array",
+    "Int32Array",
+    "Uint32Array",
+    "Float32Array",
+    "Float64Array",
+    "Uint8ClampedArray",
+    "BigInt64Array",
+    "BigUint64Array",
+  ];
+}
+
+/**
+ * Return true if the parameters passed to console.log is supported.
+ * The parameters can be either from server side (without getGrip) or client
+ * side (with getGrip).
+ *
+ * @param {Message} parameters
+ * @returns {Boolean}
+ */
+function isSupportedByConsoleTable(parameters) {
+  const supportedClasses = [
+    "Object",
+    "Map",
+    "Set",
+    "WeakMap",
+    "WeakSet",
+  ].concat(getArrayTypeNames());
+
+  if (!Array.isArray(parameters) || parameters.length === 0 || !parameters[0]) {
+    return false;
+  }
+
+  if (parameters[0].getGrip) {
+    return supportedClasses.includes(parameters[0].getGrip().class);
+  }
+
+  return supportedClasses.includes(parameters[0].class);
+}
+
+module.exports = {
+  getArrayTypeNames,
+  isSupportedByConsoleTable,
+};