angular2
Version:
Angular 2 - a web framework for modern web apps
16 lines (15 loc) • 593 B
JavaScript
import { isArray, isString, isBlank, assertionsEnabled } from '../facade/lang';
import { BaseException } from '../facade/exceptions';
export function assertArrayOfStrings(identifier, value) {
if (!assertionsEnabled() || isBlank(value)) {
return;
}
if (!isArray(value)) {
throw new BaseException(`Expected '${identifier}' to be an array of strings.`);
}
for (var i = 0; i < value.length; i += 1) {
if (!isString(value[i])) {
throw new BaseException(`Expected '${identifier}' to be an array of strings.`);
}
}
}