ngx-amap/esm2015/utils/change-filter.js

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/**
 * @fileoverview added by tsickle
 * Generated from: utils/change-filter.ts
 * @suppress {checkTypes,constantProperty,extraRequire,missingOverride,missingReturn,unusedPrivateMembers,uselessCode} checked by tsc
 */
import { of, EMPTY } from 'rxjs';
export class ChangeFilter {
    /**
     * @param {?} changes
     */
    constructor(changes) {
        this.changes = changes;
    }
    /**
     * @param {?} changes
     * @return {?}
     */
    static of(changes) {
        return new ChangeFilter(changes);
    }
    /**
     * @template T
     * @param {?} key
     * @return {?}
     */
    notEmpty(key) {
        if (this.changes[key]) {
            /** @type {?} */
            const value = this.changes[key].currentValue;
            if (value !== undefined && value !== null) {
                return of(value);
            }
        }
        return EMPTY;
    }
    /**
     * @template T
     * @param {?} key
     * @return {?}
     */
    has(key) {
        if (this.changes[key]) {
            /** @type {?} */
            const value = this.changes[key].currentValue;
            return of(value);
        }
        return EMPTY;
    }
}
if (false) {
    /**
     * @type {?}
     * @private
     */
    ChangeFilter.prototype.changes;
}
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