ags

home/ags/node_modules/eslint-plugin-es-x/lib/rules/no-nullish-coalescing-operators.js

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+/**
+ * @author Yosuke Ota <https://github.com/ota-meshi>
+ * See LICENSE file in root directory for full license.
+ */
+"use strict"
+
+const { getSourceCode } = require("eslint-compat-utils")
+
+/**
+ * Checks if the given token is a nullish coalescing operator or not.
+ * @param {Token} token - The token to check.
+ * @returns {boolean} `true` if the token is a nullish coalescing operator.
+ */
+function isNullishCoalescingOperator(token) {
+    return token.value === "??" && token.type === "Punctuator"
+}
+
+module.exports = {
+    meta: {
+        docs: {
+            description: "disallow nullish coalescing operators.",
+            category: "ES2020",
+            recommended: false,
+            url: "http://eslint-community.github.io/eslint-plugin-es-x/rules/no-nullish-coalescing-operators.html",
+        },
+        fixable: null,
+        messages: {
+            forbidden: "ES2020 nullish coalescing operators are forbidden.",
+        },
+        schema: [],
+        type: "problem",
+    },
+    create(context) {
+        return {
+            "LogicalExpression[operator='??']"(node) {
+                context.report({
+                    node: getSourceCode(context).getTokenAfter(
+                        node.left,
+                        isNullishCoalescingOperator,
+                    ),
+                    messageId: "forbidden",
+                })
+            },
+        }
+    },
+}