Method getEffectiveDeclarationFlags

internal/checker/checker.go:3687–3700

(n *ast.Node, flagsToCheck ast.ModifierFlags)

}

func (c *Checker) getEffectiveDeclarationFlags(n *ast.Node, flagsToCheck ast.ModifierFlags) ast.ModifierFlags {
	flags := c.getCombinedModifierFlagsCached(n)
	// children of classes (even ambient classes) should not be marked as ambient or export
	// because those flags have no useful semantics there.
	if !ast.IsInterfaceDeclaration(n.Parent) && !ast.IsClassDeclaration(n.Parent) && !ast.IsClassExpression(n.Parent) && n.Flags&ast.NodeFlagsAmbient != 0 {
		container := getEnclosingContainer(n)
		if container != nil && container.Flags&ast.NodeFlagsExportContext != 0 && flags&ast.ModifierFlagsAmbient == 0 && !(ast.IsModuleBlock(n.Parent) && ast.IsGlobalScopeAugmentation(n.Parent.Parent)) {
			// It is nested in an ambient export context, which means it is automatically exported
			flags |= ast.ModifierFlagsExport
		}
		flags |= ast.ModifierFlagsAmbient
	}
	return flags & flagsToCheck
}

func (c *Checker) isImplementationCompatibleWithOverload(implementation *Signature, overload *Signature) bool {
	erasedSource := c.getErasedSignature(implementation)