warn-once.js 1.8 KB

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  1. /**
  2. * @fileoverview added by tsickle
  3. * @suppress {checkTypes,extraRequire,missingOverride,missingReturn,unusedPrivateMembers,uselessCode} checked by tsc
  4. */
  5. import { isDevMode } from '@angular/core';
  6. /** @type {?} */
  7. var _messagesHash = {};
  8. /** @type {?} */
  9. var _hideMsg = typeof console === 'undefined' || !('warn' in console);
  10. /**
  11. * @param {?} msg
  12. * @return {?}
  13. */
  14. export function warnOnce(msg) {
  15. if (!isDevMode() || _hideMsg || msg in _messagesHash) {
  16. return;
  17. }
  18. _messagesHash[msg] = true;
  19. /*tslint:disable-next-line*/
  20. console.warn(msg);
  21. }
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