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constants.ts
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constants.ts
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/*
* Copyright (c) 2018, salesforce.com, inc.
* All rights reserved.
* SPDX-License-Identifier: MIT
* For full license text, see the LICENSE file in the repo root or https://opensource.org/licenses/MIT
*/
import { AriaAttrNameToPropNameMap } from '@lwc/shared';
import { ElementDirectiveName } from '../shared/types';
import { HTML_ATTRIBUTE_ELEMENT_MAP } from './utils/html-element-attributes';
import { HTML_ELEMENTS } from './utils/html-elements';
import { SVG_ELEMENTS } from './utils/svg-elements';
export const EXPRESSION_RE = /(\{(?:.)+?\})/g;
export const IF_RE = /^if:/;
export const LWC_RE = /^lwc:/;
export const VALID_IF_MODIFIER = new Set(['true', 'false', 'strict-true']);
export const ITERATOR_RE = /^iterator:.*$/;
export const EVENT_HANDLER_RE = /^on/;
export const EVENT_HANDLER_NAME_RE = /^on[a-z][a-z0-9_]*$/;
export const LWC_DIRECTIVE_SET: Set<string> = new Set(Object.values(ElementDirectiveName));
const ATTRIBUTE_NAME_CHAR = [
':A-Z_a-z\\u00C0-\\u00D6\\u00D8-\\u00F6\\u00F8-\\u02FF\\u0370-\\u037D\\u037F-\\u1FFF\\u200C-',
'\\u200D\\u2070-\\u218F\\u2C00-\\u2FEF\\u3001-\\uD7FF\\uF900-\\uFDCF\\uFDF0-\\uFFFD',
'\\-.0-9\\u00B7\\u0300-\\u036F\\u203F-\\u2040',
].join('');
// eslint-disable-next-line no-misleading-character-class
export const DATA_RE = new RegExp('^(data)-[' + ATTRIBUTE_NAME_CHAR + ']*$');
export const SUPPORTED_SVG_TAGS = new Set([
'svg',
'a',
'altGlyph',
'altglyphDef',
'altGlyphItem',
'animate',
'animateColor',
'animateMotion',
'animateTransform',
'audio',
'canvas',
'circle',
'clipPath',
'defs',
'desc',
'ellipse',
'feBlend',
'feColorMatrix',
'feComponentTransfer',
'feFuncR',
'feFuncG',
'feFuncB',
'feFuncA',
'feComposite',
'feConvolveMatrix',
'feDiffuseLighting',
'feDisplacementMap',
'feDropShadow',
'feFlood',
'feGaussianBlur',
'feMerge',
'feMergeNode',
'feMorphology',
'feOffset',
'feSpecularLighting',
'feTile',
'feTurbulence',
'fePointLight',
'filter',
'font',
'foreignObject',
'g',
'glyph',
'glyphRef',
'hkern',
'image',
'line',
'linearGradient',
'marker',
'mask',
'mpath',
'path',
'pattern',
'polygon',
'polyline',
'radialGradient',
'rect',
'stop',
'switch',
'symbol',
'text',
'textPath',
'title',
'tref',
'tspan',
'video',
'view',
'vkern',
'use',
]);
export const DISALLOWED_MATHML_TAGS = new Set(['script', 'link', 'base', 'object']);
export const ATTRS_PROPS_TRANFORMS: { [name: string]: string } = {
accesskey: 'accessKey',
readonly: 'readOnly',
tabindex: 'tabIndex',
bgcolor: 'bgColor',
colspan: 'colSpan',
rowspan: 'rowSpan',
contenteditable: 'contentEditable',
crossorigin: 'crossOrigin',
datetime: 'dateTime',
formaction: 'formAction',
ismap: 'isMap',
maxlength: 'maxLength',
minlength: 'minLength',
novalidate: 'noValidate',
usemap: 'useMap',
for: 'htmlFor',
...AriaAttrNameToPropNameMap,
};
export const DISALLOWED_HTML_TAGS = new Set(['base', 'link', 'meta', 'script', 'title']);
export const HTML_ATTRIBUTES_REVERSE_LOOKUP: {
[attr: string]: string[];
} = HTML_ATTRIBUTE_ELEMENT_MAP;
export const KNOWN_HTML_AND_SVG_ELEMENTS = new Set([...HTML_ELEMENTS, ...SVG_ELEMENTS]);
export const HTML_TAG = {
A: 'a',
AREA: 'area',
BODY: 'body',
CAPTION: 'caption',
COL: 'col',
COLGROUP: 'colgroup',
HEAD: 'head',
HTML: 'html',
TBODY: 'tbody',
TD: 'td',
TFOOT: 'tfoot',
TH: 'th',
THEAD: 'thead',
TR: 'tr',
USE: 'use',
};
export const ATTR_NAME = {
HREF: 'href',
XLINK_HREF: 'xlink:href',
};
export const TEMPLATE_DIRECTIVES = [/^key$/, /^lwc:*/, /^if:*/, /^for:*/, /^iterator:*/];
// TODO [#3370]: remove experimental template expression flag
export const TMPL_EXPR_ECMASCRIPT_EDITION = 2022;