paradiego

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 getSourceCode = require('./eslint').getSourceCode;
+
+const JSX_ANNOTATION_REGEX = /@jsx\s+([^\s]+)/;
+// Does not check for reserved keywords or unicode characters
+const JS_IDENTIFIER_REGEX = /^[_$a-zA-Z][_$a-zA-Z0-9]*$/;
+
+/**
+ * @param {Context} context
+ * @returns {string}
+ */
+function getCreateClassFromContext(context) {
+  let pragma = 'createReactClass';
+  // .eslintrc shared settings (https://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;
+}
+
+/**
+ * @param {Context} context
+ * @returns {string}
+ */
+function getFragmentFromContext(context) {
+  let pragma = 'Fragment';
+  // .eslintrc shared settings (https://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;
+}
+
+/**
+ * @param {Context} context
+ * @returns {string}
+ */
+function getFromContext(context) {
+  let pragma = 'React';
+
+  const sourceCode = getSourceCode(context);
+  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 (https://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)) {
+    console.warn(`React pragma ${pragma} is not a valid identifier`);
+    return 'React';
+  }
+  return pragma;
+}
+
+module.exports = {
+  getCreateClassFromContext,
+  getFragmentFromContext,
+  getFromContext,
+};