Method bindModuleDeclaration

internal/binder/binder.go:776–816

(node *ast.Node)

}

func (b *Binder) bindModuleDeclaration(node *ast.Node) {
	b.setExportContextFlag(node)
	if ast.IsAmbientModule(node) {
		if ast.HasSyntacticModifier(node, ast.ModifierFlagsExport) {
			b.errorOnFirstToken(node, diagnostics.X_export_modifier_cannot_be_applied_to_ambient_modules_and_module_augmentations_since_they_are_always_visible)
		}
		if ast.IsModuleAugmentationExternal(node) {
			b.declareModuleSymbol(node)
		} else {
			name := node.AsModuleDeclaration().Name()
			symbol := b.declareSymbolAndAddToSymbolTable(node, ast.SymbolFlagsValueModule, ast.SymbolFlagsValueModuleExcludes)

			if ast.IsStringLiteral(name) {
				pattern := core.TryParsePattern(name.Text())
				if !pattern.IsValid() {
					// An invalid pattern - must have multiple wildcards.
					b.errorOnFirstToken(name, diagnostics.Pattern_0_can_have_at_most_one_Asterisk_character, name.Text())
				} else if pattern.StarIndex >= 0 {
					b.file.PatternAmbientModules = append(b.file.PatternAmbientModules, &ast.PatternAmbientModule{Pattern: pattern, Symbol: symbol})
				}
			}
		}
	} else {
		state := b.declareModuleSymbol(node)
		if state != ast.ModuleInstanceStateNonInstantiated {
			symbol := node.Symbol()
			// if module was already merged with some function, class or non-const enum, treat it as non-const-enum-only
			constEnumOnlyModule := (symbol.Flags&(ast.SymbolFlagsFunction|ast.SymbolFlagsClass|ast.SymbolFlagsRegularEnum) == 0) &&
				// Current must be `const enum` only
				state == ast.ModuleInstanceStateConstEnumOnly &&
				// Can't have been set to 'false' in a previous merged symbol. ('undefined' OK)
				!b.notConstEnumOnlyModules.Has(symbol)
			if constEnumOnlyModule {
				symbol.Flags |= ast.SymbolFlagsConstEnumOnlyModule
			} else {
				symbol.Flags &^= ast.SymbolFlagsConstEnumOnlyModule
				b.notConstEnumOnlyModules.Add(symbol)
			}
		}
	}
}

func (b *Binder) declareModuleSymbol(node *ast.Node) ast.ModuleInstanceState {
	state := ast.GetModuleInstanceState(node)