@nowzoo/ngx-firebase-auth/esm2015/lib/form-helper.js

Angular components for Firebase email-first sign in and out-of-band (oob) actions (reset password, etc).

/**
 * @fileoverview added by tsickle
 * @suppress {checkTypes,extraRequire,uselessCode} checked by tsc
 */
import { take } from 'rxjs/operators';
export class NgxFirebaseAuthFormHelper {
    /**
     * @param {?} fc
     * @param {?} key
     * @param {?=} value
     * @return {?}
     */
    static setErrorUntilChanged(fc, key, value = true) {
        /** @type {?} */
        const error = {};
        error[key] = value;
        fc.setErrors(error);
        fc.valueChanges.pipe(take(1)).subscribe(() => {
            NgxFirebaseAuthFormHelper.clearError(fc, key);
        });
    }
    /**
     * @param {?} fc
     * @param {?} key
     * @return {?}
     */
    static clearError(fc, key) {
        /** @type {?} */
        const errors = {};
        if (!fc.errors) {
            return;
        }
        Object.keys(fc.errors).forEach((k) => {
            if (k !== key) {
                errors[k] = fc.errors[k];
            }
        });
        if (Object.keys(errors).length === 0) {
            fc.setErrors(null);
        }
        else {
            fc.setErrors(errors);
        }
    }
    /**
     * @param {?} fc
     * @return {?}
     */
    static requiredNonEmpty(fc) {
        /** @type {?} */
        const value = fc.value;
        if (typeof value !== 'string') {
            return null;
        }
        return value.trim().length === 0 ? { required: true } : null;
    }
}

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