Method AppendImport

convert.go:248–275

AppendImport adds (or merges into) a top-level import statement. Imports are keyed by (Module, IsTypeOnly, SideEffect): repeat calls with the same key are merged into one statement, mixed type-only and value imports for the same module emit as separate statements, and a side-effect import (SideEffe

(decl *bindings.ImportDeclaration)

// order is sorted alphabetically by module (then by SideEffect, then by
// IsTypeOnly), and within each statement the specifiers are sorted by name.
func (ts *Typescript) AppendImport(decl *bindings.ImportDeclaration) {
	if decl == nil {
		return
	}
	for _, existing := range ts.imports {
		if existing.Module != decl.Module {
			continue
		}
		if existing.SideEffect != decl.SideEffect {
			continue
		}
		if existing.SideEffect {
			// Side-effect imports have no specifiers and no type-only mode,
			// so any same-module match is a complete duplicate.
			return
		}
		if existing.IsTypeOnly != decl.IsTypeOnly {
			continue
		}
		for _, n := range decl.Named {
			if !containsImportSpecifier(existing.Named, n) {
				existing.Named = append(existing.Named, n)
			}
		}
		return
	}
	ts.imports = append(ts.imports, decl)
}

func containsImportSpecifier(list []*bindings.ImportSpecifier, target *bindings.ImportSpecifier) bool {
	for _, s := range list {