Function formatValue

lib/formatter.js:138–194

(ctx, value)

}

function formatValue(ctx, value) {
  var typeof_value = getTypeOf(value);
  var atMaxDepth = (ctx.maxDepth !== null && ctx.seen.length >= ctx.maxDepth);

  var formatted = '';
  switch (typeof_value) {
    // Handle primitive types
    case 'null':      formatted = 'null'; break;
    case 'undefined': formatted = 'undefined'; break;
    case 'string':    formatted = ctx.quoteString(value); break;
    case 'number':    formatted = '' + value; break;
    case 'boolean':   formatted = '' + value; break;

  }

  // Special Objects
  if (ctx.jsonParity) {
    switch(typeof_value) {
      case 'date':      formatted = JSON.stringify(value); break;
      case 'error':     typeof_value = 'object'; break;
      case 'regexp':    typeof_value = 'object'; break;
      case 'function':  formatted = null; break;// don't print
    }
  } else {
    switch(typeof_value) {
      case 'date':      formatted = ISO8601(value); break;
      case 'error':     formatted = '[' + Error.prototype.toString.call(value) + ']'; break;
      case 'regexp':    formatted = RegExp.prototype.toString.call(value); break;
      case 'function':  formatted = '[Function' + (value.name ? ': ' + value.name : '') + ']'; break;
    }
  }
  if (formatted !== '') {
    formatted = ctx.stylize(formatted, typeof_value);
  }

  // Array
  if (typeof_value === 'array') {
    if (atMaxDepth) {
      return ctx.stylize('[...]', 'special');
    } else {
      formatted = formatArray(ctx, value);
    }
  }

  // Object and "objects" that have properties
  if (typeof_value === 'object' || (ctx.complexObjects && typeof value === 'object' && value !== null)) {
    if (atMaxDepth) {
      if (formatObject(ctx, value, typeof_value) !== '') {
        formatted += ctx.stylize('{...}', 'special');
      }
    } else {
      formatted += formatObject(ctx, value, typeof_value);
    }
  }

  return formatted;
}