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codeql-action/node_modules/eslint-plugin-jsx-a11y/lib/util/getAccessibleChildText.js
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"use strict"; | |
var _interopRequireDefault = require("@babel/runtime/helpers/interopRequireDefault"); | |
Object.defineProperty(exports, "__esModule", { | |
value: true | |
}); | |
exports["default"] = getAccessibleChildText; | |
var _jsxAstUtils = require("jsx-ast-utils"); | |
var _isHiddenFromScreenReader = _interopRequireDefault(require("./isHiddenFromScreenReader")); | |
/** | |
* Returns a new "standardized" string: all whitespace is collapsed to one space, | |
* and the string is lowercase | |
* @param {string} input | |
* @returns lowercase, single-spaced, punctuation-stripped, trimmed string | |
*/ | |
function standardizeSpaceAndCase(input) { | |
return input.trim().replace(/[,.?¿!‽¡;:]/g, '') // strip punctuation | |
.replace(/\s\s+/g, ' ') // collapse spaces | |
.toLowerCase(); | |
} | |
/** | |
* Returns the (recursively-defined) accessible child text of a node, which (in-order) is: | |
* 1. The element's aria-label | |
* 2. If the element is a direct literal, the literal value | |
* 3. Otherwise, merge all of its children | |
* @param {JSXElement} node - node to traverse | |
* @returns child text as a string | |
*/ | |
function getAccessibleChildText(node, elementType) { | |
var ariaLabel = (0, _jsxAstUtils.getLiteralPropValue)((0, _jsxAstUtils.getProp)(node.openingElement.attributes, 'aria-label')); | |
// early escape-hatch when aria-label is applied | |
if (ariaLabel) return standardizeSpaceAndCase(ariaLabel); | |
// early-return if alt prop exists and is an image | |
var altTag = (0, _jsxAstUtils.getLiteralPropValue)((0, _jsxAstUtils.getProp)(node.openingElement.attributes, 'alt')); | |
if (elementType(node.openingElement) === 'img' && altTag) return standardizeSpaceAndCase(altTag); | |
// skip if aria-hidden is true | |
if ((0, _isHiddenFromScreenReader["default"])(elementType(node.openingElement), node.openingElement.attributes)) { | |
return ''; | |
} | |
var rawChildText = node.children.map(function (currentNode) { | |
// $FlowFixMe JSXText is missing in ast-types-flow | |
if (currentNode.type === 'Literal' || currentNode.type === 'JSXText') { | |
return String(currentNode.value); | |
} | |
if (currentNode.type === 'JSXElement') { | |
return getAccessibleChildText(currentNode, elementType); | |
} | |
return ''; | |
}).join(' '); | |
return standardizeSpaceAndCase(rawChildText); | |
} | |
module.exports = exports.default; |