@wix/css-property-parser/commonjs/evaluators/visibility.cjs

A comprehensive TypeScript library for parsing and serializing CSS property values with full MDN specification compliance

"use strict";
// CSS visibility property evaluator
// Handles CSS visibility property values according to MDN specification
// https://developer.mozilla.org/en-US/docs/Web/CSS/visibility
Object.defineProperty(exports, "__esModule", { value: true });
exports.parse = parse;
exports.toCSSValue = toCSSValue;
const shared_utils_1 = require('../utils/shared-utils.cjs');
const css_variable_1 = require('./css-variable.cjs');
const types_1 = require('../types.cjs');
/**
 * Parses a CSS visibility property value according to MDN specification
 *
 * Supports:
 * - visible: Element is visible (default)
 * - hidden: Element is invisible but still takes up space in layout
 * - collapse: Element is removed from layout (mainly for table elements)
 * - Global keywords: inherit, initial, unset, revert, revert-layer
 * - CSS variables: var(--custom-visibility)
 *
 * @param value - The CSS value to parse
 * @returns Parsed VisibilityValue or null if invalid
 */
function parse(value) {
    if (!value || typeof value !== 'string')
        return null;
    const trimmed = value.trim();
    if (trimmed === '')
        return null;
    // CSS variables - parse and return directly
    if ((0, shared_utils_1.isCssVariable)(trimmed)) {
        return (0, css_variable_1.parse)(trimmed);
    }
    // Global keywords
    if ((0, shared_utils_1.isGlobalKeyword)(trimmed)) {
        return { type: 'keyword', keyword: trimmed.toLowerCase() };
    }
    // Visibility-specific keywords  
    const visibilityKeyword = (0, shared_utils_1.getValidKeyword)(trimmed, types_1.VISIBILITY_KEYWORDS);
    if (visibilityKeyword) {
        return { type: 'keyword', keyword: visibilityKeyword };
    }
    return null;
}
/**
 * Converts a parsed VisibilityValue back to CSS string representation
 *
 * @param parsed - The parsed visibility value
 * @returns CSS string or null if invalid
 */
function toCSSValue(parsed) {
    if (!parsed)
        return null;
    if (parsed.type === 'variable') {
        return (0, css_variable_1.toCSSValue)(parsed);
    }
    if (parsed.type === 'keyword') {
        // Runtime validation: ensure keyword is actually valid for visibility
        if ((0, shared_utils_1.isGlobalKeyword)(parsed.keyword) || (0, shared_utils_1.isKeywordInArray)(parsed.keyword, types_1.VISIBILITY_KEYWORDS)) {
            return parsed.keyword;
        }
        // Invalid keyword - return null instead of invalid CSS
        return null;
    }
    return null;
}