79 lines
2.8 KiB
JavaScript
79 lines
2.8 KiB
JavaScript
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'use strict';
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var _jsxAstUtils = require('jsx-ast-utils');
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var _schemas = require('../util/schemas');
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var _isHiddenFromScreenReader = require('../util/isHiddenFromScreenReader');
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var _isHiddenFromScreenReader2 = _interopRequireDefault(_isHiddenFromScreenReader);
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function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }
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var REDUNDANT_WORDS = ['image', 'photo', 'picture']; /**
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* @fileoverview Enforce img alt attribute does not have the word image, picture, or photo.
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* @author Ethan Cohen
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*/
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// ----------------------------------------------------------------------------
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// Rule Definition
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// ----------------------------------------------------------------------------
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var errorMessage = 'Redundant alt attribute. Screen-readers already announce `img` tags as an image. You don’t need to use the words `image`, `photo,` or `picture` (or any specified custom words) in the alt prop.';
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var schema = (0, _schemas.generateObjSchema)({
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components: _schemas.arraySchema,
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words: _schemas.arraySchema
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});
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module.exports = {
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meta: {
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docs: {
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url: 'https://github.com/evcohen/eslint-plugin-jsx-a11y/tree/master/docs/rules/img-redundant-alt.md'
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},
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schema: [schema]
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},
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create: function create(context) {
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return {
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JSXOpeningElement: function JSXOpeningElement(node) {
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var options = context.options[0] || {};
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var componentOptions = options.components || [];
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var typesToValidate = ['img'].concat(componentOptions);
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var nodeType = (0, _jsxAstUtils.elementType)(node);
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// Only check 'label' elements and custom types.
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if (typesToValidate.indexOf(nodeType) === -1) {
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return;
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}
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var altProp = (0, _jsxAstUtils.getProp)(node.attributes, 'alt');
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// Return if alt prop is not present.
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if (altProp === undefined) {
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return;
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}
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var value = (0, _jsxAstUtils.getLiteralPropValue)(altProp);
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var isVisible = (0, _isHiddenFromScreenReader2.default)(nodeType, node.attributes) === false;
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var _options$words = options.words,
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words = _options$words === undefined ? [] : _options$words;
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var redundantWords = REDUNDANT_WORDS.concat(words);
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if (typeof value === 'string' && isVisible) {
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var hasRedundancy = redundantWords.some(function (word) {
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return Boolean(value.match(new RegExp('(?!{)\\b' + word + '\\b(?!})', 'i')));
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});
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if (hasRedundancy === true) {
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context.report({
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node: node,
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message: errorMessage
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});
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}
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}
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}
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};
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}
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};
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