Current File : //var/www/html/node_modules/jsx-ast-utils/lib/getPropValue.js
'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);
}
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