| 'use strict'; |
| |
| Object.defineProperty(exports, "__esModule", { |
| value: true |
| }); |
| exports.default = getPropValue; |
| exports.getLiteralPropValue = getLiteralPropValue; |
| |
| var _values = require('./values'); |
| |
| var _values2 = _interopRequireDefault(_values); |
| |
| function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; } |
| |
| var extractValue = function extractValue(attribute, extractor) { |
| if (attribute && attribute.type === 'JSXAttribute') { |
| if (attribute.value === null) { |
| // Null valued attributes imply truthiness. |
| // For example: <div aria-hidden /> |
| // See: https://facebook.github.io/react/docs/jsx-in-depth.html#boolean-attributes |
| return true; |
| } |
| |
| return extractor(attribute.value); |
| } |
| |
| return undefined; |
| }; |
| |
| /** |
| * Returns the value of a given attribute. |
| * Different types of attributes have their associated |
| * values in different properties on the object. |
| * |
| * This function should return the most *closely* associated |
| * value with the intention of the JSX. |
| * |
| * @param attribute - The JSXAttribute collected by AST parser. |
| */ |
| function getPropValue(attribute) { |
| return extractValue(attribute, _values2.default); |
| } |
| |
| /** |
| * Returns the value of a given attribute. |
| * Different types of attributes have their associated |
| * values in different properties on the object. |
| * |
| * This function should return a value only if we can extract |
| * a literal value from its attribute (i.e. values that have generic |
| * types in JavaScript - strings, numbers, booleans, etc.) |
| * |
| * @param attribute - The JSXAttribute collected by AST parser. |
| */ |
| function getLiteralPropValue(attribute) { |
| return extractValue(attribute, _values.getLiteralValue); |
| } |