@ngha/nested-value/fesm2015/ngha-nested-value.js

nestedValue the value at `path` of `object`

import { Injectable, Pipe, NgModule } from '@angular/core';

class NestedValueService {
    constructor() {
        /**
         * nestedValue the value at `path` of `object`. If the resolved value is
         * `undefined`, the `defaultValue` is returned in its place.
         *
         * @param {Object} object The object to query.
         * @param {Array|string} path The path of the property to get.
         * @param defaultValue The value returned for `undefined` resolved values.
         * @example
         *
         * const object = { 'a': 'aa', 'b': [123, '456'],  c: [{ d: '123', e: 'abc' }, { d: '456', e: 'def' }] };
         *
         * nestedValue(object, 'a')
         * // => 'aa'
         *
         * nestedValue(object, 'b')
         * // => [123 , '456']
         *
         * nestedValue(object, ['c[0].d'])
         * // => '123'
         *
         * nestedValue(object, ['c', [1], 'e'])
         * // => 'abc'
         *
         * nestedValue(object, ['c', [1], 'f'])
         * // => undefine
         *
         * nestedValue(object, ['c', [3], 'f'], 'default')
         * // => 'default'
         *
         */
        this.nestedValue = (object, path, defaultValue) => {
            const travel = regexp => String.prototype.split
                .call(path, regexp)
                .filter(Boolean)
                .reduce((res, key) => (res !== null && res !== undefined ? res[key] : res), object);
            const result = travel(/[,[\]]+?/) || travel(/[,[\].]+?/);
            return result === undefined || result === object ? defaultValue : result;
        };
    }
}
NestedValueService.decorators = [
    { type: Injectable }
];

class NestedValuePipe {
    constructor(nestedValueService) {
        this.nestedValueService = nestedValueService;
    }
    transform(object, path, defaultValue) {
        return this.nestedValueService.nestedValue(object, path, defaultValue);
    }
}
NestedValuePipe.decorators = [
    { type: Pipe, args: [{ name: 'nestedValue' },] }
];
NestedValuePipe.ctorParameters = () => [
    { type: NestedValueService }
];

class NestedValueModule {
}
NestedValueModule.decorators = [
    { type: NgModule, args: [{
                declarations: [NestedValuePipe],
                exports: [NestedValuePipe],
                providers: [NestedValueService]
            },] }
];

/**
 * Generated bundle index. Do not edit.
 */

export { NestedValueModule, NestedValuePipe, NestedValueService };
//# sourceMappingURL=ngha-nested-value.js.map