Function throwError

packages/core/src/util/assert.ts:111–116

(msg: string, actual?: any, expected?: any, comparison?: string)

export function throwError(msg: string): never;
export function throwError(msg: string, actual: any, expected: any, comparison: string): never;
export function throwError(msg: string, actual?: any, expected?: any, comparison?: string): never {
  throw new Error(
    `ASSERTION ERROR: ${msg}` +
      (comparison == null ? '' : ` [Expected=> ${expected} ${comparison} ${actual} <=Actual]`),
  );
}

export function assertDomNode(node: any): asserts node is Node {
  if (!(node instanceof Node)) {