Function describeValue

docs/index.js:20581–20631

(value, maxLength)

        });
    }
    function describeValue(value, maxLength) {
      switch (typeof value) {
        case "string":
          return (
            (value = JSON.stringify(value)),
            value.length > maxLength
              ? 5 > maxLength
                ? '"..."'
                : value.slice(0, maxLength - 4) + '..."'
              : value
          );
        case "object":
          if (null === value) return "null";
          if (isArrayImpl(value)) return "[...]";
          if (value.$$typeof === REACT_ELEMENT_TYPE)
            return (maxLength = getComponentNameFromType(value.type))
              ? "<" + maxLength + ">"
              : "<...>";
          var name = objectName(value);
          if ("Object" === name) {
            name = "";
            maxLength -= 2;
            for (var propName in value)
              if (value.hasOwnProperty(propName)) {
                var jsonPropName = JSON.stringify(propName);
                jsonPropName !== '"' + propName + '"' &&
                  (propName = jsonPropName);
                maxLength -= propName.length - 2;
                jsonPropName = describeValue(
                  value[propName],
                  15 > maxLength ? maxLength : 15
                );
                maxLength -= jsonPropName.length;
                if (0 > maxLength) {
                  name += "" === name ? "..." : ", ...";
                  break;
                }
                name +=
                  ("" === name ? "" : ",") + propName + ":" + jsonPropName;
              }
            return "{" + name + "}";
          }
          return name;
        case "function":
          return (maxLength = value.displayName || value.name)
            ? "function " + maxLength
            : "function";
        default:
          return String(value);
      }
    }
    function describePropValue(value, maxLength) {
      return "string" !== typeof value || needsEscaping.test(value)
        ? "{" + describeValue(value, maxLength - 2) + "}"