d9b8758f47
PR-URL: https://github.com/nodejs/node/pull/6132 Reviewed-By: Brian White <mscdex@mscdex.net> Reviewed-By: Jeremiah Senkpiel <fishrock123@rocketmail.com> Reviewed-By: Rich Trott <rtrott@gmail.com> Reviewed-By: thefourtheye <thechargingvolcano@gmail.com>
59 lines
1.7 KiB
JavaScript
59 lines
1.7 KiB
JavaScript
/**
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* @fileoverview Rule to require braces in arrow function body.
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* @author Alberto Rodríguez
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* @copyright 2015 Alberto Rodríguez. All rights reserved.
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* See LICENSE file in root directory for full license.
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*/
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"use strict";
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//------------------------------------------------------------------------------
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// Rule Definition
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//------------------------------------------------------------------------------
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module.exports = function(context) {
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var always = context.options[0] === "always";
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var asNeeded = !context.options[0] || context.options[0] === "as-needed";
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/**
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* Determines whether a arrow function body needs braces
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* @param {ASTNode} node The arrow function node.
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* @returns {void}
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*/
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function validate(node) {
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var arrowBody = node.body;
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if (arrowBody.type === "BlockStatement") {
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var blockBody = arrowBody.body;
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if (blockBody.length !== 1) {
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return;
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}
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if (asNeeded && blockBody[0].type === "ReturnStatement") {
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context.report({
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node: node,
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loc: arrowBody.loc.start,
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message: "Unexpected block statement surrounding arrow body."
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});
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}
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} else {
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if (always) {
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context.report({
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node: node,
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loc: arrowBody.loc.start,
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message: "Expected block statement surrounding arrow body."
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});
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}
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}
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}
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return {
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"ArrowFunctionExpression": validate
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};
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};
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module.exports.schema = [
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{
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"enum": ["always", "as-needed"]
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}
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];
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