82 lines
2.7 KiB
JavaScript
82 lines
2.7 KiB
JavaScript
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/**
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* @license Apache-2.0
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*
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* Copyright (c) 2018 The Stdlib Authors.
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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'use strict';
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// MODULES //
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var isObject = require( '@stdlib/assert/is-plain-object' );
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var hasOwnProp = require( '@stdlib/assert/has-own-property' );
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var isBoolean = require( '@stdlib/assert/is-boolean' ).isPrimitive;
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var isFunction = require( '@stdlib/assert/is-function' );
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var isPositiveInteger = require( '@stdlib/assert/is-positive-integer' ).isPrimitive;
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// MAIN //
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/**
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* Validates function options.
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*
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* @private
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* @param {Object} opts - destination object
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* @param {Options} options - options to validate
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* @param {number} [options.level] - merge level
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* @param {boolean} [options.copy] - boolean indicating whether to deep copy merged values
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* @param {(boolean|Function)} [options.override] - defines the merge strategy
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* @param {boolean} [options.extend] - boolean indicating whether new properties can be added to the target object
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* @returns {(Error|null)} error object or null
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*/
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function validate( opts, options ) {
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if ( !isObject( options ) ) {
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return new TypeError( 'invalid argument. Options argument must be an object. Value: `' + options + '`.' );
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}
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if ( hasOwnProp( options, 'level' ) ) {
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opts.level = options.level;
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if ( !isPositiveInteger( opts.level ) ) {
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return new TypeError( 'invalid option. `level` option must be a positive integer. Option: `' + opts.level + '`.' );
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}
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}
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if ( hasOwnProp( options, 'copy' ) ) {
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opts.copy = options.copy;
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if ( !isBoolean( opts.copy ) ) {
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return new TypeError( 'invalid option. `copy` option must be a boolean primitive. Option: `' + opts.copy + '`.' );
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}
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}
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if ( hasOwnProp( options, 'override' ) ) {
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opts.override = options.override;
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if (
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!isBoolean( opts.override ) &&
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!isFunction( opts.override )
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) {
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return new TypeError( 'invalid option. `override` option must be either a boolean primitive or a function. Option: `' + opts.override + '`.' );
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}
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}
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if ( hasOwnProp( options, 'extend' ) ) {
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opts.extend = options.extend;
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if ( !isBoolean( opts.extend ) ) {
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return new TypeError( 'invalid option. `extend` option must be a boolean primitive. Option: `' + opts.extend + '`.' );
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}
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}
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return null;
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}
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// EXPORTS //
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module.exports = validate;
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