Function isMemberMethodFormatMessageCall

packages/ts-transformer/transform.ts:648–679

* Check if node is `foo.bar.formatMessage` node * @param node * @param sf

(
  ts: TypeScript,
  node: typescript.CallExpression,
  additionalFunctionNames: string[]
)

 * @param sf
 */
function isMemberMethodFormatMessageCall(
  ts: TypeScript,
  node: typescript.CallExpression,
  additionalFunctionNames: string[]
) {
  const fnNames = new Set([
    'formatMessage',
    '$formatMessage',
    ...additionalFunctionNames,
  ])
  const method = node.expression

  // Handle foo.formatMessage()
  if (ts.isPropertyAccessExpression(method)) {
    return fnNames.has(method.name.text)
  }

  // GH #4471: Handle foo.formatMessage<T>?.() - when both generics and optional chaining are used
  // TypeScript represents this as ExpressionWithTypeArguments containing a PropertyAccessExpression
  if (
    ts.isExpressionWithTypeArguments &&
    ts.isExpressionWithTypeArguments(method)
  ) {
    const expr = method.expression
    if (ts.isPropertyAccessExpression(expr)) {
      return fnNames.has(expr.name.text)
    }
  }

  // Handle formatMessage()
  return ts.isIdentifier(method) && fnNames.has(method.text)
}

function extractMessageFromJsxComponent(
  ts: TypeScript,