Function assertIndexInRange

packages/core/src/util/assert.ts:130–136

(arr: any[], index: number)

}

export function assertIndexInRange(arr: any[], index: number) {
  assertDefined(arr, 'Array must be defined.');
  const maxLen = arr.length;
  if (index < 0 || index >= maxLen) {
    throwError(`Index expected to be less than ${maxLen} but got ${index}`);
  }
}

export function assertOneOf(value: any, ...validValues: any[]) {
  if (validValues.indexOf(value) !== -1) return true;