@wix/css-property-parser/dist/evaluators/display.js

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

// CSS display property evaluator
// Handles CSS display property values according to MDN specification
// https://developer.mozilla.org/en-US/docs/Web/CSS/display
import { isCssVariable, isGlobalKeyword, getValidKeyword, isKeywordInArray } from '../utils/shared-utils.js';
import { parse as parseCSSVariable, toCSSValue as cssVariableToCSSValue } from './css-variable.js';
import { DISPLAY_KEYWORDS } from '../types.js';
/**
 * Parses a CSS display property value according to MDN specification
 *
 * Supports:
 * - Basic display values: block, inline, inline-block
 * - Flexbox values: flex, inline-flex
 * - Grid values: grid, inline-grid
 * - Table values: table, inline-table, table-row, table-cell, etc.
 * - List values: list-item
 * - Other values: none, contents, flow-root
 * - Ruby values: ruby, ruby-base, ruby-text, etc.
 * - Global keywords: inherit, initial, unset, revert, revert-layer
 * - CSS variables: var(--custom-display)
 *
 * @param value - The CSS value to parse
 * @returns Parsed DisplayValue or null if invalid
 */
export 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 (isCssVariable(trimmed)) {
        return parseCSSVariable(trimmed);
    }
    // Global keywords
    if (isGlobalKeyword(trimmed)) {
        return { type: 'keyword', keyword: trimmed.toLowerCase() };
    }
    // Display-specific keywords  
    const displayKeyword = getValidKeyword(trimmed, DISPLAY_KEYWORDS);
    if (displayKeyword) {
        return { type: 'keyword', keyword: displayKeyword };
    }
    return null;
}
/**
 * Converts a parsed DisplayValue back to CSS string representation
 *
 * @param parsed - The parsed display value
 * @returns CSS value string or null if invalid
 */
export function toCSSValue(parsed) {
    if (!parsed)
        return null;
    // Handle CSS variables
    if (parsed.type === 'variable') {
        return cssVariableToCSSValue(parsed);
    }
    // Handle keyword values (both display-specific and global)
    if (parsed.type === 'keyword') {
        // Runtime validation: ensure keyword is actually valid for display
        if (isGlobalKeyword(parsed.keyword) || isKeywordInArray(parsed.keyword, DISPLAY_KEYWORDS)) {
            return parsed.keyword;
        }
        // Invalid keyword - return null instead of invalid CSS
        return null;
    }
    return null;
}