Function extractJSXDescriptor

packages/unplugin/transform.ts:196–239

(
    elementNode: any
  )

  }

  function extractJSXDescriptor(
    elementNode: any
  ):
    | {descriptor: MessageDescriptor; locations: DescriptorLocation}
    | undefined {
    const attributes = elementNode.attributes || []
    const descriptor: MessageDescriptor = {}
    const locations: DescriptorLocation = {}

    // Always insert after the element name so the id survives even when the
    // first attribute (e.g. description) is removed.
    locations.insertionPoint = elementNode.name.end

    for (const attr of attributes) {
      if (attr.type !== 'JSXAttribute') continue
      const attrName = attr.name
      if (!attrName || attrName.type !== 'JSXIdentifier') continue
      const n = attrName.name
      if (n !== 'id' && n !== 'defaultMessage' && n !== 'description') continue
      const keyName: keyof MessageDescriptor = n

      let val: string | undefined
      const valueNode = attr.value
      if (!valueNode) continue

      if (valueNode.type === 'StringLiteral' || valueNode.type === 'Literal') {
        val = decodeJSXAttributeValue(valueNode.value as string)
      } else if (valueNode.type === 'JSXExpressionContainer') {
        val = getStaticValue(valueNode.expression)
      }

      if (val === undefined) continue

      descriptor[keyName] = val
      locations[keyName] = {
        start: attr.value.start,
        end: attr.value.end,
        value: val,
      }
    }

    if (!descriptor.defaultMessage && !descriptor.id) return undefined
    return {descriptor, locations}
  }

  function processDescriptor(
    descriptor: MessageDescriptor,