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* @license Apache-2.0
*
* Copyright (c) 2025 The Stdlib Authors.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
/* eslint-disable no-invalid-this */
'use strict';
// MODULES //
var logger = require( 'debug' );
var isString = require( '@stdlib/assert/is-string' ).isPrimitive;
var isStringArray = require( '@stdlib/assert/is-string-array' ).primitives;
var hasEqualValues = require( '@stdlib/array/base/assert/has-equal-values' );
var copy = require( '@stdlib/array/base/copy' );
var format = require( '@stdlib/string/format' );
var changeEvent = require( './../change_event.js' );
var prop = require( './properties.js' );
// VARIABLES //
var debug = logger( 'vega:axis:set:'+prop.name );
// MAIN //
/**
* Sets the axis title.
*
* @private
* @param {(string|StringArray)} value - input value
* @throws {TypeError} must be a string or an array of strings
* @returns {void}
*/
function set( value ) {
var isStr = isString( value );
if ( !isStr && !isStringArray( value ) ) {
throw new TypeError( format( 'invalid assignment. `%s` must be a string or an array of strings. Value: `%s`.', prop.name, value ) );
}
if ( isStr ) {
value = [ value ];
}
if ( !hasEqualValues( value, this[ prop.private ] ) ) {
debug( 'Current value: %s. New value: %s.', JSON.stringify( this[ prop.private ] ), JSON.stringify( value ) );
this[ prop.private ] = copy( value );
this.emit( 'change', changeEvent( prop.name ) );
}
}
// EXPORTS //
module.exports = set;
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