Function parseJsonBody

packages/components/src/utils.ts:1894–1954

(body: string)

 * @throws {Error} - Detailed error message with suggestions for common JSON issues
 */
export const parseJsonBody = (body: string): any => {
    try {
        // First try to parse as-is with JSON5 (which handles more cases than standard JSON)
        return JSON5.parse(body)
    } catch (error) {
        try {
            // If that fails, try to clean up common issues
            let cleanedBody = body

            // 1. Remove unnecessary backslash escapes for square brackets and braces
            // eslint-disable-next-line
            cleanedBody = cleanedBody.replace(/\\(?=[\[\]{}])/g, '')

            // 2. Fix single quotes to double quotes (but preserve quotes inside strings)
            cleanedBody = cleanedBody.replace(/'/g, '"')

            // 3. Remove trailing commas before closing brackets/braces
            cleanedBody = cleanedBody.replace(/,(\s*[}\]])/g, '$1')

            // 4. Remove comments (// and /* */)
            cleanedBody = cleanedBody
                .replace(/\/\/.*$/gm, '') // Remove single-line comments
                .replace(/\/\*[\s\S]*?\*\//g, '') // Remove multi-line comments

            return JSON5.parse(cleanedBody)
        } catch (secondError) {
            try {
                // 3rd attempt: try with standard JSON.parse on original body
                return JSON.parse(body)
            } catch (thirdError) {
                try {
                    // 4th attempt: try with standard JSON.parse on cleaned body
                    const finalCleanedBody = body
                        // eslint-disable-next-line
                        .replace(/\\(?=[\[\]{}])/g, '') // Basic escape cleanup
                        .replace(/,(\s*[}\]])/g, '$1') // Remove trailing commas
                        .trim()

                    return JSON.parse(finalCleanedBody)
                } catch (fourthError) {
                    // Provide comprehensive error message with suggestions
                    const suggestions = [
                        '• Ensure all strings are enclosed in double quotes',
                        '• Remove trailing commas',
                        '• Remove comments (// or /* */)',
                        '• Escape special characters properly (\\n for newlines, \\" for quotes)',
                        '• Use double quotes instead of single quotes',
                        '• Remove unnecessary backslashes before brackets [ ] { }'
                    ]

                    throw new Error(
                        `Invalid JSON format in body. Original error: ${error.message}. ` +
                            `After cleanup attempts: ${secondError.message}. 3rd attempt: ${thirdError.message}. Final attempt: ${fourthError.message}.\n\n` +
                            `Common fixes:\n${suggestions.join('\n')}\n\n` +
                            `Received body: ${body.substring(0, 200)}${body.length > 200 ? '...' : ''}`
                    )
                }
            }