@imhonglu/pattern-builder/dist/utils/is-character-set.js

Type-safe regular expression pattern builder for TypeScript with fluent API

import { extractPatternSource } from "./extract-pattern-source.js";
/**
 * Checks if a pattern is a character set.
 *
 * @param pattern - The pattern to check.
 * @returns Whether the pattern is a character set.
 */
export function isCharacterSet(pattern) {
    const source = extractPatternSource(pattern);
    return source.startsWith("[") && source.endsWith("]");
}
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