Function addValueToProperties

packages/shared/ReactPerformanceTrackProperties.js:66–241

(
  propertyName: string,
  value: mixed,
  properties: Array<[string, string]>,
  indent: number,
  prefix: string,
)

}

export function addValueToProperties(
  propertyName: string,
  value: mixed,
  properties: Array<[string, string]>,
  indent: number,
  prefix: string,
): void {
  let desc;
  switch (typeof value) {
    case 'object':
      if (value === null) {
        desc = 'null';
        break;
      } else {
        if (value.$$typeof === REACT_ELEMENT_TYPE) {
          // JSX
          const typeName = getComponentNameFromType(value.type) || '\u2026';
          const key = value.key;
          const props: any = value.props;
          const propsKeys = Object.keys(props);
          const propsLength = propsKeys.length;
          if (key == null && propsLength === 0) {
            desc = '<' + typeName + ' />';
            break;
          }
          if (
            indent < 3 ||
            (propsLength === 1 && propsKeys[0] === 'children' && key == null)
          ) {
            desc = '<' + typeName + ' \u2026 />';
            break;
          }
          properties.push([
            prefix + '\xa0\xa0'.repeat(indent) + propertyName,
            '<' + typeName,
          ]);
          if (key !== null) {
            addValueToProperties('key', key, properties, indent + 1, prefix);
          }
          let hasChildren = false;
          for (const propKey in props) {
            if (propKey === 'children') {
              if (
                props.children != null &&
                (!isArray(props.children) || props.children.length > 0)
              ) {
                hasChildren = true;
              }
            } else if (
              hasOwnProperty.call(props, propKey) &&
              propKey[0] !== '_'
            ) {
              addValueToProperties(
                propKey,
                props[propKey],
                properties,
                indent + 1,
                prefix,