641 lines
16 KiB
JavaScript
641 lines
16 KiB
JavaScript
/**
|
|
* @fileoverview Check if tag attributes to have non-valid value
|
|
* @author Sebastian Malton
|
|
*/
|
|
|
|
'use strict';
|
|
|
|
const matchAll = require('string.prototype.matchall');
|
|
const docsUrl = require('../util/docsUrl');
|
|
const report = require('../util/report');
|
|
const getMessageData = require('../util/message');
|
|
|
|
// ------------------------------------------------------------------------------
|
|
// Rule Definition
|
|
// ------------------------------------------------------------------------------
|
|
|
|
const rel = new Map([
|
|
['alternate', new Set(['link', 'area', 'a'])],
|
|
['apple-touch-icon', new Set(['link'])],
|
|
['apple-touch-startup-image', new Set(['link'])],
|
|
['author', new Set(['link', 'area', 'a'])],
|
|
['bookmark', new Set(['area', 'a'])],
|
|
['canonical', new Set(['link'])],
|
|
['dns-prefetch', new Set(['link'])],
|
|
['external', new Set(['area', 'a', 'form'])],
|
|
['help', new Set(['link', 'area', 'a', 'form'])],
|
|
['icon', new Set(['link'])],
|
|
['license', new Set(['link', 'area', 'a', 'form'])],
|
|
['manifest', new Set(['link'])],
|
|
['mask-icon', new Set(['link'])],
|
|
['modulepreload', new Set(['link'])],
|
|
['next', new Set(['link', 'area', 'a', 'form'])],
|
|
['nofollow', new Set(['area', 'a', 'form'])],
|
|
['noopener', new Set(['area', 'a', 'form'])],
|
|
['noreferrer', new Set(['area', 'a', 'form'])],
|
|
['opener', new Set(['area', 'a', 'form'])],
|
|
['pingback', new Set(['link'])],
|
|
['preconnect', new Set(['link'])],
|
|
['prefetch', new Set(['link'])],
|
|
['preload', new Set(['link'])],
|
|
['prerender', new Set(['link'])],
|
|
['prev', new Set(['link', 'area', 'a', 'form'])],
|
|
['search', new Set(['link', 'area', 'a', 'form'])],
|
|
['shortcut', new Set(['link'])], // generally allowed but needs pair with "icon"
|
|
['shortcut\u0020icon', new Set(['link'])],
|
|
['stylesheet', new Set(['link'])],
|
|
['tag', new Set(['area', 'a'])],
|
|
]);
|
|
|
|
const pairs = new Map([
|
|
['shortcut', new Set(['icon'])],
|
|
]);
|
|
|
|
/**
|
|
* Map between attributes and a mapping between valid values and a set of tags they are valid on
|
|
* @type {Map<string, Map<string, Set<string>>>}
|
|
*/
|
|
const VALID_VALUES = new Map([
|
|
['rel', rel],
|
|
]);
|
|
|
|
/**
|
|
* Map between attributes and a mapping between pair-values and a set of values they are valid with
|
|
* @type {Map<string, Map<string, Set<string>>>}
|
|
*/
|
|
const VALID_PAIR_VALUES = new Map([
|
|
['rel', pairs],
|
|
]);
|
|
|
|
/**
|
|
* The set of all possible HTML elements. Used for skipping custom types
|
|
* @type {Set<string>}
|
|
*/
|
|
const HTML_ELEMENTS = new Set([
|
|
'a',
|
|
'abbr',
|
|
'acronym',
|
|
'address',
|
|
'applet',
|
|
'area',
|
|
'article',
|
|
'aside',
|
|
'audio',
|
|
'b',
|
|
'base',
|
|
'basefont',
|
|
'bdi',
|
|
'bdo',
|
|
'bgsound',
|
|
'big',
|
|
'blink',
|
|
'blockquote',
|
|
'body',
|
|
'br',
|
|
'button',
|
|
'canvas',
|
|
'caption',
|
|
'center',
|
|
'cite',
|
|
'code',
|
|
'col',
|
|
'colgroup',
|
|
'content',
|
|
'data',
|
|
'datalist',
|
|
'dd',
|
|
'del',
|
|
'details',
|
|
'dfn',
|
|
'dialog',
|
|
'dir',
|
|
'div',
|
|
'dl',
|
|
'dt',
|
|
'em',
|
|
'embed',
|
|
'fieldset',
|
|
'figcaption',
|
|
'figure',
|
|
'font',
|
|
'footer',
|
|
'form',
|
|
'frame',
|
|
'frameset',
|
|
'h1',
|
|
'h2',
|
|
'h3',
|
|
'h4',
|
|
'h5',
|
|
'h6',
|
|
'head',
|
|
'header',
|
|
'hgroup',
|
|
'hr',
|
|
'html',
|
|
'i',
|
|
'iframe',
|
|
'image',
|
|
'img',
|
|
'input',
|
|
'ins',
|
|
'kbd',
|
|
'keygen',
|
|
'label',
|
|
'legend',
|
|
'li',
|
|
'link',
|
|
'main',
|
|
'map',
|
|
'mark',
|
|
'marquee',
|
|
'math',
|
|
'menu',
|
|
'menuitem',
|
|
'meta',
|
|
'meter',
|
|
'nav',
|
|
'nobr',
|
|
'noembed',
|
|
'noframes',
|
|
'noscript',
|
|
'object',
|
|
'ol',
|
|
'optgroup',
|
|
'option',
|
|
'output',
|
|
'p',
|
|
'param',
|
|
'picture',
|
|
'plaintext',
|
|
'portal',
|
|
'pre',
|
|
'progress',
|
|
'q',
|
|
'rb',
|
|
'rp',
|
|
'rt',
|
|
'rtc',
|
|
'ruby',
|
|
's',
|
|
'samp',
|
|
'script',
|
|
'section',
|
|
'select',
|
|
'shadow',
|
|
'slot',
|
|
'small',
|
|
'source',
|
|
'spacer',
|
|
'span',
|
|
'strike',
|
|
'strong',
|
|
'style',
|
|
'sub',
|
|
'summary',
|
|
'sup',
|
|
'svg',
|
|
'table',
|
|
'tbody',
|
|
'td',
|
|
'template',
|
|
'textarea',
|
|
'tfoot',
|
|
'th',
|
|
'thead',
|
|
'time',
|
|
'title',
|
|
'tr',
|
|
'track',
|
|
'tt',
|
|
'u',
|
|
'ul',
|
|
'var',
|
|
'video',
|
|
'wbr',
|
|
'xmp',
|
|
]);
|
|
|
|
/**
|
|
* Map between attributes and set of tags that the attribute is valid on
|
|
* @type {Map<string, Set<string>>}
|
|
*/
|
|
const COMPONENT_ATTRIBUTE_MAP = new Map([
|
|
['rel', new Set(['link', 'a', 'area', 'form'])],
|
|
]);
|
|
|
|
const messages = {
|
|
emptyIsMeaningless: 'An empty “{{attributeName}}” attribute is meaningless.',
|
|
neverValid: '“{{reportingValue}}” is never a valid “{{attributeName}}” attribute value.',
|
|
noEmpty: 'An empty “{{attributeName}}” attribute is meaningless.',
|
|
noMethod: 'The ”{{attributeName}}“ attribute cannot be a method.',
|
|
notAlone: '“{{reportingValue}}” must be directly followed by “{{missingValue}}”.',
|
|
notPaired: '“{{reportingValue}}” can not be directly followed by “{{secondValue}}” without “{{missingValue}}”.',
|
|
notValidFor: '“{{reportingValue}}” is not a valid “{{attributeName}}” attribute value for <{{elementName}}>.',
|
|
onlyMeaningfulFor: 'The ”{{attributeName}}“ attribute only has meaning on the tags: {{tagNames}}',
|
|
onlyStrings: '“{{attributeName}}” attribute only supports strings.',
|
|
spaceDelimited: '”{{attributeName}}“ attribute values should be space delimited.',
|
|
suggestRemoveDefault: '"remove {{attributeName}}"',
|
|
suggestRemoveEmpty: '"remove empty attribute {{attributeName}}"',
|
|
suggestRemoveInvalid: '“remove invalid attribute {{reportingValue}}”',
|
|
suggestRemoveWhitespaces: 'remove whitespaces in “{{reportingValue}}”',
|
|
suggestRemoveNonString: 'remove non-string value in “{{reportingValue}}”',
|
|
};
|
|
|
|
function splitIntoRangedParts(node, regex) {
|
|
const valueRangeStart = node.range[0] + 1; // the plus one is for the initial quote
|
|
|
|
return Array.from(matchAll(node.value, regex), (match) => {
|
|
const start = match.index + valueRangeStart;
|
|
const end = start + match[0].length;
|
|
|
|
return {
|
|
reportingValue: `${match[1]}`,
|
|
value: match[1],
|
|
range: [start, end],
|
|
};
|
|
});
|
|
}
|
|
|
|
function checkLiteralValueNode(context, attributeName, node, parentNode, parentNodeName) {
|
|
if (typeof node.value !== 'string') {
|
|
report(context, messages.onlyStrings, 'onlyStrings', {
|
|
node,
|
|
data: { attributeName },
|
|
suggest: [
|
|
Object.assign(
|
|
getMessageData('suggestRemoveNonString', messages.suggestRemoveNonString),
|
|
{ fix(fixer) { return fixer.remove(parentNode); } }
|
|
),
|
|
],
|
|
});
|
|
return;
|
|
}
|
|
|
|
if (!node.value.trim()) {
|
|
report(context, messages.noEmpty, 'noEmpty', {
|
|
node,
|
|
data: { attributeName },
|
|
suggest: [
|
|
Object.assign(
|
|
getMessageData('suggestRemoveEmpty', messages.suggestRemoveEmpty),
|
|
{ fix(fixer) { return fixer.remove(node.parent); } }
|
|
),
|
|
],
|
|
});
|
|
return;
|
|
}
|
|
|
|
const singleAttributeParts = splitIntoRangedParts(node, /(\S+)/g);
|
|
for (const singlePart of singleAttributeParts) {
|
|
const allowedTags = VALID_VALUES.get(attributeName).get(singlePart.value);
|
|
const reportingValue = singlePart.reportingValue;
|
|
|
|
const suggest = [
|
|
Object.assign(
|
|
getMessageData('suggestRemoveInvalid', messages.suggestRemoveInvalid),
|
|
{ fix(fixer) { return fixer.removeRange(singlePart.range); } }
|
|
),
|
|
];
|
|
|
|
if (!allowedTags) {
|
|
const data = {
|
|
attributeName,
|
|
reportingValue,
|
|
};
|
|
report(context, messages.neverValid, 'neverValid', {
|
|
node,
|
|
data,
|
|
suggest,
|
|
});
|
|
} else if (!allowedTags.has(parentNodeName)) {
|
|
report(context, messages.notValidFor, 'notValidFor', {
|
|
node,
|
|
data: {
|
|
attributeName,
|
|
reportingValue,
|
|
elementName: parentNodeName,
|
|
},
|
|
suggest,
|
|
});
|
|
}
|
|
}
|
|
|
|
const allowedPairsForAttribute = VALID_PAIR_VALUES.get(attributeName);
|
|
if (allowedPairsForAttribute) {
|
|
const pairAttributeParts = splitIntoRangedParts(node, /(?=(\b\S+\s*\S+))/g);
|
|
for (const pairPart of pairAttributeParts) {
|
|
for (const allowedPair of allowedPairsForAttribute) {
|
|
const pairing = allowedPair[0];
|
|
const siblings = allowedPair[1];
|
|
const attributes = pairPart.reportingValue.split('\u0020');
|
|
const firstValue = attributes[0];
|
|
const secondValue = attributes[1];
|
|
if (firstValue === pairing) {
|
|
const lastValue = attributes[attributes.length - 1]; // in case of multiple white spaces
|
|
if (!siblings.has(lastValue)) {
|
|
const message = secondValue ? messages.notPaired : messages.notAlone;
|
|
const messageId = secondValue ? 'notPaired' : 'notAlone';
|
|
report(context, message, messageId, {
|
|
node,
|
|
data: {
|
|
reportingValue: firstValue,
|
|
secondValue,
|
|
missingValue: Array.from(siblings).join(', '),
|
|
},
|
|
suggest: false,
|
|
});
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
const whitespaceParts = splitIntoRangedParts(node, /(\s+)/g);
|
|
for (const whitespacePart of whitespaceParts) {
|
|
if (whitespacePart.range[0] === (node.range[0] + 1) || whitespacePart.range[1] === (node.range[1] - 1)) {
|
|
report(context, messages.spaceDelimited, 'spaceDelimited', {
|
|
node,
|
|
data: { attributeName },
|
|
suggest: [
|
|
Object.assign(
|
|
getMessageData('suggestRemoveWhitespaces', messages.suggestRemoveWhitespaces),
|
|
{ fix(fixer) { return fixer.removeRange(whitespacePart.range); } }
|
|
),
|
|
],
|
|
});
|
|
} else if (whitespacePart.value !== '\u0020') {
|
|
report(context, messages.spaceDelimited, 'spaceDelimited', {
|
|
node,
|
|
data: { attributeName },
|
|
suggest: [
|
|
Object.assign(
|
|
getMessageData('suggestRemoveWhitespaces', messages.suggestRemoveWhitespaces),
|
|
{ fix(fixer) { return fixer.replaceTextRange(whitespacePart.range, '\u0020'); } }
|
|
),
|
|
],
|
|
});
|
|
}
|
|
}
|
|
}
|
|
|
|
const DEFAULT_ATTRIBUTES = ['rel'];
|
|
|
|
function checkAttribute(context, node) {
|
|
const attribute = node.name.name;
|
|
|
|
const parentNodeName = node.parent.name.name;
|
|
if (!COMPONENT_ATTRIBUTE_MAP.has(attribute) || !COMPONENT_ATTRIBUTE_MAP.get(attribute).has(parentNodeName)) {
|
|
const tagNames = Array.from(
|
|
COMPONENT_ATTRIBUTE_MAP.get(attribute).values(),
|
|
(tagName) => `"<${tagName}>"`
|
|
).join(', ');
|
|
report(context, messages.onlyMeaningfulFor, 'onlyMeaningfulFor', {
|
|
node: node.name,
|
|
data: {
|
|
attributeName: attribute,
|
|
tagNames,
|
|
},
|
|
suggest: [
|
|
Object.assign(
|
|
getMessageData('suggestRemoveDefault', messages.suggestRemoveDefault),
|
|
{ fix(fixer) { return fixer.remove(node); } }
|
|
),
|
|
],
|
|
});
|
|
return;
|
|
}
|
|
|
|
function fix(fixer) { return fixer.remove(node); }
|
|
|
|
if (!node.value) {
|
|
report(context, messages.emptyIsMeaningless, 'emptyIsMeaningless', {
|
|
node: node.name,
|
|
data: { attributeName: attribute },
|
|
suggest: [
|
|
Object.assign(
|
|
getMessageData('suggestRemoveEmpty', messages.suggestRemoveEmpty),
|
|
{ fix }
|
|
),
|
|
],
|
|
});
|
|
return;
|
|
}
|
|
|
|
if (node.value.type === 'Literal') {
|
|
return checkLiteralValueNode(context, attribute, node.value, node, parentNodeName);
|
|
}
|
|
|
|
if (node.value.expression.type === 'Literal') {
|
|
return checkLiteralValueNode(context, attribute, node.value.expression, node, parentNodeName);
|
|
}
|
|
|
|
if (node.value.type !== 'JSXExpressionContainer') {
|
|
return;
|
|
}
|
|
|
|
if (node.value.expression.type === 'ObjectExpression') {
|
|
report(context, messages.onlyStrings, 'onlyStrings', {
|
|
node: node.value,
|
|
data: { attributeName: attribute },
|
|
suggest: [
|
|
Object.assign(
|
|
getMessageData('suggestRemoveDefault', messages.suggestRemoveDefault),
|
|
{ fix }
|
|
),
|
|
],
|
|
});
|
|
} else if (node.value.expression.type === 'Identifier' && node.value.expression.name === 'undefined') {
|
|
report(context, messages.onlyStrings, 'onlyStrings', {
|
|
node: node.value,
|
|
data: { attributeName: attribute },
|
|
suggest: [
|
|
Object.assign(
|
|
getMessageData('suggestRemoveDefault', messages.suggestRemoveDefault),
|
|
{ fix }
|
|
),
|
|
],
|
|
});
|
|
}
|
|
}
|
|
|
|
function isValidCreateElement(node) {
|
|
return node.callee
|
|
&& node.callee.type === 'MemberExpression'
|
|
&& node.callee.object.name === 'React'
|
|
&& node.callee.property.name === 'createElement'
|
|
&& node.arguments.length > 0;
|
|
}
|
|
|
|
function checkPropValidValue(context, node, value, attribute) {
|
|
const validTags = VALID_VALUES.get(attribute);
|
|
|
|
if (value.type !== 'Literal') {
|
|
return; // cannot check non-literals
|
|
}
|
|
|
|
const validTagSet = validTags.get(value.value);
|
|
if (!validTagSet) {
|
|
report(context, messages.neverValid, 'neverValid', {
|
|
node: value,
|
|
data: {
|
|
attributeName: attribute,
|
|
reportingValue: value.value,
|
|
},
|
|
suggest: [
|
|
Object.assign(
|
|
getMessageData('suggestRemoveInvalid', messages.suggestRemoveInvalid),
|
|
{ fix(fixer) { return fixer.replaceText(value, value.raw.replace(value.value, '')); } }
|
|
),
|
|
],
|
|
});
|
|
} else if (!validTagSet.has(node.arguments[0].value)) {
|
|
report(context, messages.notValidFor, 'notValidFor', {
|
|
node: value,
|
|
data: {
|
|
attributeName: attribute,
|
|
reportingValue: value.raw,
|
|
elementName: node.arguments[0].value,
|
|
},
|
|
suggest: false,
|
|
});
|
|
}
|
|
}
|
|
|
|
/**
|
|
*
|
|
* @param {*} context
|
|
* @param {*} node
|
|
* @param {string} attribute
|
|
*/
|
|
function checkCreateProps(context, node, attribute) {
|
|
const propsArg = node.arguments[1];
|
|
|
|
if (!propsArg || propsArg.type !== 'ObjectExpression') {
|
|
return; // can't check variables, computed, or shorthands
|
|
}
|
|
|
|
for (const prop of propsArg.properties) {
|
|
if (!prop.key || prop.key.type !== 'Identifier') {
|
|
// eslint-disable-next-line no-continue
|
|
continue; // cannot check computed keys
|
|
}
|
|
|
|
if (prop.key.name !== attribute) {
|
|
// eslint-disable-next-line no-continue
|
|
continue; // ignore not this attribute
|
|
}
|
|
|
|
if (!COMPONENT_ATTRIBUTE_MAP.get(attribute).has(node.arguments[0].value)) {
|
|
const tagNames = Array.from(
|
|
COMPONENT_ATTRIBUTE_MAP.get(attribute).values(),
|
|
(tagName) => `"<${tagName}>"`
|
|
).join(', ');
|
|
|
|
report(context, messages.onlyMeaningfulFor, 'onlyMeaningfulFor', {
|
|
node: prop.key,
|
|
data: {
|
|
attributeName: attribute,
|
|
tagNames,
|
|
},
|
|
suggest: false,
|
|
});
|
|
|
|
// eslint-disable-next-line no-continue
|
|
continue;
|
|
}
|
|
|
|
if (prop.method) {
|
|
report(context, messages.noMethod, 'noMethod', {
|
|
node: prop,
|
|
data: {
|
|
attributeName: attribute,
|
|
},
|
|
suggest: false,
|
|
});
|
|
|
|
// eslint-disable-next-line no-continue
|
|
continue;
|
|
}
|
|
|
|
if (prop.shorthand || prop.computed) {
|
|
// eslint-disable-next-line no-continue
|
|
continue; // cannot check these
|
|
}
|
|
|
|
if (prop.value.type === 'ArrayExpression') {
|
|
for (const value of prop.value.elements) {
|
|
checkPropValidValue(context, node, value, attribute);
|
|
}
|
|
|
|
// eslint-disable-next-line no-continue
|
|
continue;
|
|
}
|
|
|
|
checkPropValidValue(context, node, prop.value, attribute);
|
|
}
|
|
}
|
|
|
|
module.exports = {
|
|
meta: {
|
|
docs: {
|
|
description: 'Disallow usage of invalid attributes',
|
|
category: 'Possible Errors',
|
|
url: docsUrl('no-invalid-html-attribute'),
|
|
},
|
|
messages,
|
|
schema: [{
|
|
type: 'array',
|
|
uniqueItems: true,
|
|
items: {
|
|
enum: ['rel'],
|
|
},
|
|
}],
|
|
type: 'suggestion',
|
|
hasSuggestions: true, // eslint-disable-line eslint-plugin/require-meta-has-suggestions
|
|
},
|
|
|
|
create(context) {
|
|
return {
|
|
JSXAttribute(node) {
|
|
const attributes = new Set(context.options[0] || DEFAULT_ATTRIBUTES);
|
|
|
|
// ignore attributes that aren't configured to be checked
|
|
if (!attributes.has(node.name.name)) {
|
|
return;
|
|
}
|
|
|
|
// ignore non-HTML elements
|
|
if (!HTML_ELEMENTS.has(node.parent.name.name)) {
|
|
return;
|
|
}
|
|
|
|
checkAttribute(context, node);
|
|
},
|
|
|
|
CallExpression(node) {
|
|
if (!isValidCreateElement(node)) {
|
|
return;
|
|
}
|
|
|
|
const elemNameArg = node.arguments[0];
|
|
|
|
if (!elemNameArg || elemNameArg.type !== 'Literal') {
|
|
return; // can only check literals
|
|
}
|
|
|
|
// ignore non-HTML elements
|
|
if (!HTML_ELEMENTS.has(elemNameArg.value)) {
|
|
return;
|
|
}
|
|
|
|
const attributes = new Set(context.options[0] || DEFAULT_ATTRIBUTES);
|
|
|
|
for (const attribute of attributes) {
|
|
checkCreateProps(context, node, attribute);
|
|
}
|
|
},
|
|
};
|
|
},
|
|
};
|