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node_modules/eslint-plugin-react/lib/rules/jsx-space-before-closing.js

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+/**
+ * @fileoverview Validate spacing before closing bracket in JSX.
+ * @author ryym
+ * @deprecated
+ */
+
+'use strict';
+
+const getTokenBeforeClosingBracket = require('../util/getTokenBeforeClosingBracket');
+const docsUrl = require('../util/docsUrl');
+const log = require('../util/log');
+
+let isWarnedForDeprecation = false;
+
+// ------------------------------------------------------------------------------
+// Rule Definition
+// ------------------------------------------------------------------------------
+
+module.exports = {
+  meta: {
+    deprecated: true,
+    docs: {
+      description: 'Validate spacing before closing bracket in JSX',
+      category: 'Stylistic Issues',
+      recommended: false,
+      url: docsUrl('jsx-space-before-closing')
+    },
+    fixable: 'code',
+
+    schema: [{
+      enum: ['always', 'never']
+    }]
+  },
+
+  create(context) {
+    const configuration = context.options[0] || 'always';
+
+    const NEVER_MESSAGE = 'A space is forbidden before closing bracket';
+    const ALWAYS_MESSAGE = 'A space is required before closing bracket';
+
+    // --------------------------------------------------------------------------
+    // Public
+    // --------------------------------------------------------------------------
+
+    return {
+      JSXOpeningElement(node) {
+        if (!node.selfClosing) {
+          return;
+        }
+
+        const sourceCode = context.getSourceCode();
+
+        const leftToken = getTokenBeforeClosingBracket(node);
+        const closingSlash = sourceCode.getTokenAfter(leftToken);
+
+        if (leftToken.loc.end.line !== closingSlash.loc.start.line) {
+          return;
+        }
+
+        if (configuration === 'always' && !sourceCode.isSpaceBetweenTokens(leftToken, closingSlash)) {
+          context.report({
+            loc: closingSlash.loc.start,
+            message: ALWAYS_MESSAGE,
+            fix(fixer) {
+              return fixer.insertTextBefore(closingSlash, ' ');
+            }
+          });
+        } else if (configuration === 'never' && sourceCode.isSpaceBetweenTokens(leftToken, closingSlash)) {
+          context.report({
+            loc: closingSlash.loc.start,
+            message: NEVER_MESSAGE,
+            fix(fixer) {
+              const previousToken = sourceCode.getTokenBefore(closingSlash);
+              return fixer.removeRange([previousToken.range[1], closingSlash.range[0]]);
+            }
+          });
+        }
+      },
+
+      Program() {
+        if (isWarnedForDeprecation) {
+          return;
+        }
+
+        log('The react/jsx-space-before-closing rule is deprecated. ' +
+            'Please use the react/jsx-tag-spacing rule with the ' +
+            '"beforeSelfClosing" option instead.');
+        isWarnedForDeprecation = true;
+      }
+    };
+  }
+};