Constnium/node_modules/eslint-plugin-es/lib/rules/no-nullish-coalescing-operators.js

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2022-06-23 02:27:43 +02:00
/**
* @author Yosuke Ota <https://github.com/ota-meshi>
* See LICENSE file in root directory for full license.
*/
"use strict"
/**
* 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://mysticatea.github.io/eslint-plugin-es/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: context
.getSourceCode()
.getTokenAfter(node.left, isNullishCoalescingOperator),
messageId: "forbidden",
})
},
}
},
}