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