Function extractMessagesFromCallExpression

packages/ts-transformer/transform.ts:823–930

(
  ts: TypeScript,
  factory: typescript.NodeFactory,
  node: typescript.CallExpression,
  opts: Opts,
  sf: typescript.SourceFile
)

}

function extractMessagesFromCallExpression(
  ts: TypeScript,
  factory: typescript.NodeFactory,
  node: typescript.CallExpression,
  opts: Opts,
  sf: typescript.SourceFile
): typescript.VisitResult<typescript.CallExpression> {
  const {onMsgExtracted, additionalFunctionNames} = opts
  if (isMultipleMessageDecl(ts, node)) {
    const [arg, ...restArgs] = node.arguments
    const descriptorsObj = unwrapObjectLiteralExpression(ts, arg)
    if (descriptorsObj) {
      const properties = descriptorsObj.properties
      const msgs = properties
        .filter<typescript.PropertyAssignment>(
          (prop): prop is typescript.PropertyAssignment =>
            ts.isPropertyAssignment(prop)
        )
        .map(prop => {
          const descriptor = unwrapObjectLiteralExpression(ts, prop.initializer)
          return (
            descriptor && extractMessageDescriptor(ts, descriptor, opts, sf)
          )
        })
        .filter((msg): msg is MessageDescriptor => !!msg)
      if (!msgs.length) {
        return node
      }
      debug('Multiple messages extracted from "%s": %s', sf.fileName, msgs)
      if (typeof onMsgExtracted === 'function') {
        onMsgExtracted(sf.fileName, msgs)
      }

      const clonedProperties = factory.createNodeArray(
        properties.map((prop, i) => {
          if (
            !ts.isPropertyAssignment(prop) ||
            !ts.isObjectLiteralExpression(prop.initializer)
          ) {
            return prop
          }

          return factory.createPropertyAssignment(
            prop.name,
            setAttributesInObject(
              ts,
              factory,
              prop.initializer,
              {
                defaultMessage: opts.removeDefaultMessage
                  ? undefined
                  : msgs[i].defaultMessage,
                id: msgs[i] ? msgs[i].id : '',
              },
              opts.ast
            )
          )
        })