--- /dev/null
+/**
+ * @fileoverview A rule to ensure consistent quotes used in jsx syntax.
+ * @author Mathias Schreck <https://github.com/lo1tuma>
+ */
+
+"use strict";
+
+//------------------------------------------------------------------------------
+// Requirements
+//------------------------------------------------------------------------------
+
+const astUtils = require("./utils/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));
+ }
+ });
+ }
+ }
+ };
+ }
+};