Function isTruthy

packages/angular_devkit/schematics_cli/bin/schematics.ts:556–559

(value: undefined | string)

function isTTY(): boolean {
  const isTruthy = (value: undefined | string) => {
    // Returns true if value is a string that is anything but 0 or false.
    return value !== undefined && value !== '0' && value.toUpperCase() !== 'FALSE';
  };

  // If we force TTY, we always return true.
  const force = process.env['NG_FORCE_TTY'];