/**
* JSON formatting and validation utilities
*/
export interface FormatJsonArgs {
input: string;
action: 'format' | 'validate' | 'minify' | 'prettify';
indent?: number;
}
export interface FormatJsonResult {
valid: boolean;
formatted?: string;
minified?: string;
error?: string;
}
/**
* Format, validate, minify, or prettify JSON
*/
export function formatJson(args: FormatJsonArgs): FormatJsonResult {
const { input, action, indent = 2 } = args;
if (typeof input !== 'string' || input.trim().length === 0) {
return {
valid: false,
error: 'Input must be a non-empty string',
};
}
if (indent < 0 || indent > 10) {
return {
valid: false,
error: 'Indent must be between 0 and 10',
};
}
try {
// Parse JSON to validate and get object
const parsed = JSON.parse(input);
switch (action) {
case 'validate':
return {
valid: true,
formatted: JSON.stringify(parsed, null, indent),
};
case 'format':
case 'prettify':
return {
valid: true,
formatted: JSON.stringify(parsed, null, indent),
minified: JSON.stringify(parsed),
};
case 'minify':
return {
valid: true,
formatted: JSON.stringify(parsed, null, indent),
minified: JSON.stringify(parsed),
};
default:
return {
valid: false,
error: `Unknown action: ${action}. Must be one of: format, validate, minify, prettify`,
};
}
} catch (error) {
if (error instanceof SyntaxError) {
return {
valid: false,
error: `Invalid JSON: ${error.message}`,
};
}
return {
valid: false,
error: `JSON processing error: ${error instanceof Error ? error.message : String(error)}`,
};
}
}
