Method constructor

packages/router/src/create_url_tree.ts:240–261

(
    public isAbsolute: boolean,
    public numberOfDoubleDots: number,
    public commands: readonly any[],
  )

class Navigation {
  constructor(
    public isAbsolute: boolean,
    public numberOfDoubleDots: number,
    public commands: readonly any[],
  ) {
    if (isAbsolute && commands.length > 0 && isMatrixParams(commands[0])) {
      throw new RuntimeError(
        RuntimeErrorCode.ROOT_SEGMENT_MATRIX_PARAMS,
        (typeof ngDevMode === 'undefined' || ngDevMode) &&
          'Root segment cannot have matrix parameters',
      );
    }

    const cmdWithOutlet = commands.find(isCommandWithOutlets);
    if (cmdWithOutlet && cmdWithOutlet !== last(commands)) {
      throw new RuntimeError(
        RuntimeErrorCode.MISPLACED_OUTLETS_COMMAND,
        (typeof ngDevMode === 'undefined' || ngDevMode) &&
          '{outlets:{}} has to be the last command',
      );
    }
  }

  public toRoot(): boolean {
    return this.isAbsolute && this.commands.length === 1 && this.commands[0] == '/';