time-to-botec

Benchmark sampling in different programming languages
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validate.js (2861B)

      1 /**
      2 * @license Apache-2.0
      3 *
      4 * Copyright (c) 2018 The Stdlib Authors.
      5 *
      6 * Licensed under the Apache License, Version 2.0 (the "License");
      7 * you may not use this file except in compliance with the License.
      8 * You may obtain a copy of the License at
      9 *
     10 *    http://www.apache.org/licenses/LICENSE-2.0
     11 *
     12 * Unless required by applicable law or agreed to in writing, software
     13 * distributed under the License is distributed on an "AS IS" BASIS,
     14 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
     15 * See the License for the specific language governing permissions and
     16 * limitations under the License.
     17 */
     18 
     19 'use strict';
     20 
     21 // MODULES //
     22 
     23 var hasOwnProp = require( '@stdlib/assert/has-own-property' );
     24 var isObject = require( '@stdlib/assert/is-plain-object' );
     25 var isNumber = require( '@stdlib/assert/is-number' ).isPrimitive;
     26 var isString = require( '@stdlib/assert/is-string' ).isPrimitive;
     27 var isNonNegativeInteger = require( '@stdlib/assert/is-nonnegative-integer' ).isPrimitive;
     28 var isnan = require( '@stdlib/assert/is-nan' );
     29 
     30 
     31 // MAIN //
     32 
     33 /**
     34 * Validates function options.
     35 *
     36 * @private
     37 * @param {Object} opts - destination for validated options
     38 * @param {Options} options - function options
     39 * @param {number} [options.alpha] - significance level
     40 * @param {string} [options.alternative] - alternative hypothesis
     41 * @param {NonNegativeInteger} [options.init] - number of data points used to compute initial statistics
     42 * @returns {(null|Error)} null or an error
     43 *
     44 * @example
     45 * var opts = {};
     46 *
     47 * var options = {
     48 *     'alpha': 0.05,
     49 *     'alernative': 'two-sided',
     50 *     'init': 100
     51 * };
     52 *
     53 * var err = validate( opts, options );
     54 * if ( err ) {
     55 *     throw err;
     56 * }
     57 */
     58 function validate( opts, options ) {
     59 	if ( !isObject( options ) ) {
     60 		return new TypeError( 'invalid argument. Options argument must be an object. Value: `' + options + '`.' );
     61 	}
     62 	if ( hasOwnProp( options, 'alpha' ) ) {
     63 		opts.alpha = options.alpha;
     64 		if ( !isNumber( opts.alpha ) || isnan( opts.alpha ) ) {
     65 			return new TypeError( 'invalid option. `alpha` option must be a number primitive. Option: `' + opts.alpha + '`.' );
     66 		}
     67 		if ( opts.alpha < 0.0 || opts.alpha > 1.0 ) {
     68 			return new RangeError( 'invalid option. `alpha` option must be on the interval [0,1]. Option: `' + opts.alpha + '`.' );
     69 		}
     70 	}
     71 	if ( hasOwnProp( options, 'alternative' ) ) {
     72 		opts.alternative = options.alternative;
     73 		if ( !isString( opts.alternative ) ) {
     74 			return new TypeError( 'invalid option. `alternative` option must be a string primitive. Option: `' + opts.alternative + '`.' );
     75 		}
     76 	}
     77 	if ( hasOwnProp( options, 'init' ) ) {
     78 		opts.init = options.init;
     79 		if ( !isNonNegativeInteger( opts.init ) ) {
     80 			return new TypeError( 'invalid option. `init` option must be a nonnegative integer. Option: `' + opts.init + '`.' );
     81 		}
     82 	}
     83 	return null;
     84 }
     85 
     86 
     87 // EXPORTS //
     88 
     89 module.exports = validate;