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node_modules/eslint-plugin-react/lib/util/pragma.js

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+/**
+ * @fileoverview Utility functions for React pragma configuration
+ * @author Yannick Croissant
+ */
+
+'use strict';
+
+const JSX_ANNOTATION_REGEX = /^\*\s*@jsx\s+([^\s]+)/;
+// Does not check for reserved keywords or unicode characters
+const JS_IDENTIFIER_REGEX = /^[_$a-zA-Z][_$a-zA-Z0-9]*$/;
+
+
+function getCreateClassFromContext(context) {
+  let pragma = 'createReactClass';
+  // .eslintrc shared settings (http://eslint.org/docs/user-guide/configuring#adding-shared-settings)
+  if (context.settings.react && context.settings.react.createClass) {
+    pragma = context.settings.react.createClass;
+  }
+  if (!JS_IDENTIFIER_REGEX.test(pragma)) {
+    throw new Error(`createClass pragma ${pragma} is not a valid function name`);
+  }
+  return pragma;
+}
+
+function getFragmentFromContext(context) {
+  let pragma = 'Fragment';
+  // .eslintrc shared settings (http://eslint.org/docs/user-guide/configuring#adding-shared-settings)
+  if (context.settings.react && context.settings.react.fragment) {
+    pragma = context.settings.react.fragment;
+  }
+  if (!JS_IDENTIFIER_REGEX.test(pragma)) {
+    throw new Error(`Fragment pragma ${pragma} is not a valid identifier`);
+  }
+  return pragma;
+}
+
+function getFromContext(context) {
+  let pragma = 'React';
+
+  const sourceCode = context.getSourceCode();
+  const pragmaNode = sourceCode.getAllComments().find(node => JSX_ANNOTATION_REGEX.test(node.value));
+
+  if (pragmaNode) {
+    const matches = JSX_ANNOTATION_REGEX.exec(pragmaNode.value);
+    pragma = matches[1].split('.')[0];
+  // .eslintrc shared settings (http://eslint.org/docs/user-guide/configuring#adding-shared-settings)
+  } else if (context.settings.react && context.settings.react.pragma) {
+    pragma = context.settings.react.pragma;
+  }
+
+  if (!JS_IDENTIFIER_REGEX.test(pragma)) {
+    throw new Error(`React pragma ${pragma} is not a valid identifier`);
+  }
+  return pragma;
+}
+
+module.exports = {
+  getCreateClassFromContext,
+  getFragmentFromContext,
+  getFromContext
+};