Function assertInInjectionContext

packages/core/src/di/contextual.ts:77–88

(debugFn: Function)

 * @publicApi
 */
export function assertInInjectionContext(debugFn: Function): void {
  // Taking a `Function` instead of a string name here prevents the unminified name of the function
  // from being retained in the bundle regardless of minification.
  if (!isInInjectionContext()) {
    throw new RuntimeError(
      RuntimeErrorCode.MISSING_INJECTION_CONTEXT,
      ngDevMode &&
        debugFn.name +
          '() can only be used within an injection context such as a constructor, a factory function, a field initializer, or a function used with `runInInjectionContext`',
    );
  }
}