node/tools/eslint/lib/rules/jsx-quotes.js
Rich Trott f601d040b5 tools: update ESLint to version 2.1.0
Update ESLint to 2.1.0. ESLint has a number of potentially-useful new
features but this change attempts to be minimal in its changes.
However, some things could not be avoided reasonably.

ESLint 2.1.0 found a few lint issues that ESLing 1.x missed with
template strings that did not take advantage of any features of
template strings, and `let` declarations where `const` sufficed.

Additionally, ESLint 2.1.0 removes some granularity around enabling ES6
features. Some features (e.g., spread operator) that had been turned off
in our configuration for ESLint 1.x are now permitted.

PR-URL: https://github.com/nodejs/node/pull/5214
Reviewed-By: Michaël Zasso <mic.besace@gmail.com>
Reviewed-By: jbergstroem - Johan Bergström <bugs@bergstroem.nu>
Reviewed-By: James M Snell <jasnell@gmail.com>
Reviewed-By: Roman Reiss <me@silverwind.io>
Reviewed-By: Myles Borins <myles.borins@gmail.com>
2016-02-21 22:12:40 +11:00

75 lines
2.3 KiB
JavaScript

/**
* @fileoverview A rule to ensure consistent quotes used in jsx syntax.
* @author Mathias Schreck <https://github.com/lo1tuma>
* @copyright 2015 Mathias Schreck
*/
"use strict";
//------------------------------------------------------------------------------
// Requirements
//------------------------------------------------------------------------------
var astUtils = require("../ast-utils");
//------------------------------------------------------------------------------
// Constants
//------------------------------------------------------------------------------
var QUOTE_SETTINGS = {
"prefer-double": {
quote: "\"",
description: "singlequote",
convert: function(str) {
return str.replace(/'/g, "\"");
}
},
"prefer-single": {
quote: "'",
description: "doublequote",
convert: function(str) {
return str.replace(/"/g, "'");
}
}
};
//------------------------------------------------------------------------------
// Rule Definition
//------------------------------------------------------------------------------
module.exports = function(context) {
var quoteOption = context.options[0] || "prefer-double",
setting = QUOTE_SETTINGS[quoteOption];
/**
* Checks if the given string literal node uses the expected quotes
* @param {ASTNode} node - A string literal node.
* @returns {boolean} Whether or not the string literal used the expected quotes.
* @public
*/
function usesExpectedQuotes(node) {
return node.value.indexOf(setting.quote) !== -1 || astUtils.isSurroundedBy(node.raw, setting.quote);
}
return {
"JSXAttribute": function(node) {
var attributeValue = node.value;
if (attributeValue && astUtils.isStringLiteral(attributeValue) && !usesExpectedQuotes(attributeValue)) {
context.report({
node: attributeValue,
message: "Unexpected usage of " + setting.description + ".",
fix: function(fixer) {
return fixer.replaceText(attributeValue, setting.convert(attributeValue.raw));
}
});
}
}
};
};
module.exports.schema = [
{
"enum": [ "prefer-single", "prefer-double" ]
}
];