35 lines
1.1 KiB
JavaScript
35 lines
1.1 KiB
JavaScript
|
/**
|
||
|
|
* @fileoverview Utility functions for type annotation detection.
|
||
|
|
* @author Yannick Croissant
|
||
|
|
* @author Vitor Balocco
|
||
|
|
*/
|
||
|
|
|
||
|
|
'use strict';
|
||
|
|
|
||
|
|
const getFirstTokens = require('./eslint').getFirstTokens;
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Checks if we are declaring a `props` argument with a flow type annotation.
|
||
|
|
* @param {ASTNode} node The AST node being checked.
|
||
|
|
* @param {Object} context
|
||
|
|
* @returns {boolean} True if the node is a type annotated props declaration, false if not.
|
||
|
|
*/
|
||
|
|
function isAnnotatedFunctionPropsDeclaration(node, context) {
|
||
|
|
if (!node || !node.params || !node.params.length) {
|
||
|
|
return false;
|
||
|
|
}
|
||
|
|
|
||
|
|
const typeNode = node.params[0].type === 'AssignmentPattern' ? node.params[0].left : node.params[0];
|
||
|
|
|
||
|
|
const tokens = getFirstTokens(context, typeNode, 2);
|
||
|
|
const isAnnotated = typeNode.typeAnnotation;
|
||
|
|
const isDestructuredProps = typeNode.type === 'ObjectPattern';
|
||
|
|
const isProps = tokens[0].value === 'props' || (tokens[1] && tokens[1].value === 'props');
|
||
|
|
|
||
|
|
return (isAnnotated && (isDestructuredProps || isProps));
|
||
|
|
}
|
||
|
|
|
||
|
|
module.exports = {
|
||
|
|
isAnnotatedFunctionPropsDeclaration,
|
||
|
|
};
|