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/**
* @fileoverview A rule to ensure consistent quotes used in jsx syntax.
* @author Mathias Schreck <https://github.com/lo1tuma>
*/
"use strict";
//------------------------------------------------------------------------------
// Requirements
//------------------------------------------------------------------------------
const astUtils = require("../util/ast-utils");
//------------------------------------------------------------------------------
// Constants
//------------------------------------------------------------------------------
const QUOTE_SETTINGS = {
"prefer-double": {
quote: "\"",
description: "singlequote",
convert(str) {
return str.replace(/'/gu, "\"");
}
},
"prefer-single": {
quote: "'",
description: "doublequote",
convert(str) {
return str.replace(/"/gu, "'");
}
}
};
//------------------------------------------------------------------------------
// Rule Definition
//------------------------------------------------------------------------------
module.exports = {
meta: {
type: "layout",
docs: {
description: "enforce the consistent use of either double or single quotes in JSX attributes",
category: "Stylistic Issues",
recommended: false,
url: "https://eslint.org/docs/rules/jsx-quotes"
},
fixable: "whitespace",
schema: [
{
enum: ["prefer-single", "prefer-double"]
}
],
messages: {
unexpected: "Unexpected usage of {{description}}."
}
},
create(context) {
const 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(node) {
const attributeValue = node.value;
if (attributeValue && astUtils.isStringLiteral(attributeValue) && !usesExpectedQuotes(attributeValue)) {
context.report({
node: attributeValue,
messageId: "unexpected",
data: {
description: setting.description
},
fix(fixer) {
return fixer.replaceText(attributeValue, setting.convert(attributeValue.raw));
}
});
}
}
};
}
};