Function generateImport

packages/language-service/src/utils/ts_utils.ts:619–647

(
  localName: string,
  exportedSpecifierName: string | null,
  rawModuleSpecifier: string,
  useSingleQuotes = false,
)

 * be omitted.
 */
export function generateImport(
  localName: string,
  exportedSpecifierName: string | null,
  rawModuleSpecifier: string,
  useSingleQuotes = false,
): ts.ImportDeclaration {
  let propName: ts.Identifier | undefined;
  if (exportedSpecifierName !== null && exportedSpecifierName !== localName) {
    propName = ts.factory.createIdentifier(exportedSpecifierName);
  }
  const name = ts.factory.createIdentifier(localName);
  const moduleSpec = ts.factory.createStringLiteral(rawModuleSpecifier, useSingleQuotes);
  let importClauseName: ts.Identifier | undefined;
  let importBindings: ts.NamedImportBindings | undefined;

  if (localName === 'default' && exportedSpecifierName !== null) {
    importClauseName = ts.factory.createIdentifier(exportedSpecifierName);
  } else {
    importBindings = ts.factory.createNamedImports([
      ts.factory.createImportSpecifier(false, propName, name),
    ]);
  }
  return ts.factory.createImportDeclaration(
    undefined,
    ts.factory.createImportClause(undefined, importClauseName, importBindings),
    moduleSpec,
    undefined,
  );
}

/**
 * Update an existing named import with a new member.