Skip to content
Permalink
9bfb9ba527
Switch branches/tags

Name already in use

A tag already exists with the provided branch name. Many Git commands accept both tag and branch names, so creating this branch may cause unexpected behavior. Are you sure you want to create this branch?
Go to file
 
 
Cannot retrieve contributors at this time
45 lines (40 sloc) 1.38 KB
import getValue, { getLiteralValue } from './values';
const 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.
*/
export default function getPropValue(attribute) {
return extractValue(attribute, getValue);
}
/**
* 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.
*/
export function getLiteralPropValue(attribute) {
return extractValue(attribute, getLiteralValue);
}