apisurf/lib/utilities/parseEnumDefinition.js

Analyze API surface changes between npm package versions to catch breaking changes

/**
 * Parse enum definition from source lines
 */
export function parseEnumDefinition(lines, startIndex, name) {
    const members = [];
    let braceCount = 0;
    let inEnum = false;
    for (let i = startIndex; i < lines.length; i++) {
        const line = lines[i].trim();
        if (line.includes('{')) {
            braceCount++;
            inEnum = true;
        }
        if (inEnum && braceCount > 0) {
            // Skip comment lines
            if (line.startsWith('//') || line.startsWith('/*') || line.startsWith('*')) {
                continue;
            }
            // Remove inline comments
            const lineWithoutComment = line.split('//')[0].trim();
            // Match enum members like: PENDING = 'pending',
            const memberMatch = lineWithoutComment.match(/^\s*(\w+)\s*=/);
            if (memberMatch) {
                members.push(memberMatch[1]);
            }
        }
        if (line.includes('}')) {
            braceCount--;
            if (braceCount === 0) {
                break;
            }
        }
    }
    return {
        name,
        kind: 'enum',
        members,
        signature: `export enum ${name} { ${members.join(', ')} }`
    };
}